./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-consumption/linux-3.8-rc1-32_7a-drivers--media--usb--ttusb-dec--ttusb_dec.ko-ldv_main0.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0f8a17c6 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-consumption/linux-3.8-rc1-32_7a-drivers--media--usb--ttusb-dec--ttusb_dec.ko-ldv_main0.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 106df4f5c2a241158f9b42d6bacea5fef4152f7015c080096ac6f687357e10b4 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-17 00:03:22,904 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-17 00:03:22,906 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-17 00:03:22,941 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-17 00:03:22,941 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-17 00:03:22,944 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-17 00:03:22,945 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-17 00:03:22,947 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-17 00:03:22,948 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-17 00:03:22,952 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-17 00:03:22,952 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-17 00:03:22,953 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-17 00:03:22,953 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-17 00:03:22,955 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-17 00:03:22,956 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-17 00:03:22,958 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-17 00:03:22,959 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-17 00:03:22,960 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-17 00:03:22,961 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-17 00:03:22,966 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-17 00:03:22,966 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-17 00:03:22,967 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-17 00:03:22,968 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-17 00:03:22,969 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-17 00:03:22,973 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-17 00:03:22,973 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-17 00:03:22,974 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-17 00:03:22,975 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-17 00:03:22,975 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-17 00:03:22,976 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-17 00:03:22,976 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-17 00:03:22,976 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-17 00:03:22,977 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-17 00:03:22,978 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-17 00:03:22,979 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-17 00:03:22,979 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-17 00:03:22,980 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-17 00:03:22,980 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-17 00:03:22,980 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-17 00:03:22,981 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-17 00:03:22,982 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-17 00:03:22,983 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-17 00:03:23,005 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-17 00:03:23,006 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-17 00:03:23,006 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-17 00:03:23,006 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-17 00:03:23,007 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-17 00:03:23,007 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-17 00:03:23,007 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-17 00:03:23,008 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-17 00:03:23,008 INFO L138 SettingsManager]: * Use SBE=true [2021-11-17 00:03:23,008 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-17 00:03:23,008 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-17 00:03:23,009 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-17 00:03:23,009 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-17 00:03:23,009 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-17 00:03:23,009 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-17 00:03:23,009 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-17 00:03:23,009 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-17 00:03:23,009 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-17 00:03:23,010 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-17 00:03:23,010 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-17 00:03:23,010 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-17 00:03:23,010 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-17 00:03:23,010 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-17 00:03:23,010 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-17 00:03:23,010 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-17 00:03:23,011 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-17 00:03:23,011 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-17 00:03:23,011 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-17 00:03:23,011 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-17 00:03:23,011 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-17 00:03:23,011 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-17 00:03:23,011 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 106df4f5c2a241158f9b42d6bacea5fef4152f7015c080096ac6f687357e10b4 [2021-11-17 00:03:23,196 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-17 00:03:23,220 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-17 00:03:23,222 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-17 00:03:23,223 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-17 00:03:23,223 INFO L275 PluginConnector]: CDTParser initialized [2021-11-17 00:03:23,234 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-consumption/linux-3.8-rc1-32_7a-drivers--media--usb--ttusb-dec--ttusb_dec.ko-ldv_main0.cil.out.i [2021-11-17 00:03:23,291 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a85693014/33afc42a71214272a5f47de9f60c1701/FLAG17d7e606d [2021-11-17 00:03:23,862 INFO L306 CDTParser]: Found 1 translation units. [2021-11-17 00:03:23,863 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-consumption/linux-3.8-rc1-32_7a-drivers--media--usb--ttusb-dec--ttusb_dec.ko-ldv_main0.cil.out.i [2021-11-17 00:03:23,901 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a85693014/33afc42a71214272a5f47de9f60c1701/FLAG17d7e606d [2021-11-17 00:03:24,265 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a85693014/33afc42a71214272a5f47de9f60c1701 [2021-11-17 00:03:24,266 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-17 00:03:24,268 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-17 00:03:24,270 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-17 00:03:24,270 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-17 00:03:24,272 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-17 00:03:24,273 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 12:03:24" (1/1) ... [2021-11-17 00:03:24,273 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@44ffea85 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:03:24, skipping insertion in model container [2021-11-17 00:03:24,273 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 12:03:24" (1/1) ... [2021-11-17 00:03:24,277 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-17 00:03:24,378 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-17 00:03:25,425 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-consumption/linux-3.8-rc1-32_7a-drivers--media--usb--ttusb-dec--ttusb_dec.ko-ldv_main0.cil.out.i[247200,247213] [2021-11-17 00:03:25,504 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-17 00:03:25,521 INFO L203 MainTranslator]: Completed pre-run [2021-11-17 00:03:25,742 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-consumption/linux-3.8-rc1-32_7a-drivers--media--usb--ttusb-dec--ttusb_dec.ko-ldv_main0.cil.out.i[247200,247213] [2021-11-17 00:03:25,752 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-17 00:03:25,787 INFO L208 MainTranslator]: Completed translation [2021-11-17 00:03:25,789 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:03:25 WrapperNode [2021-11-17 00:03:25,789 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-17 00:03:25,790 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-17 00:03:25,790 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-17 00:03:25,790 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-17 00:03:25,795 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:03:25" (1/1) ... [2021-11-17 00:03:25,843 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:03:25" (1/1) ... [2021-11-17 00:03:25,915 INFO L137 Inliner]: procedures = 216, calls = 1408, calls flagged for inlining = 108, calls inlined = 97, statements flattened = 3069 [2021-11-17 00:03:25,917 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-17 00:03:25,918 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-17 00:03:25,918 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-17 00:03:25,918 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-17 00:03:25,924 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:03:25" (1/1) ... [2021-11-17 00:03:25,924 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:03:25" (1/1) ... [2021-11-17 00:03:25,942 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:03:25" (1/1) ... [2021-11-17 00:03:25,943 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:03:25" (1/1) ... [2021-11-17 00:03:26,046 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:03:25" (1/1) ... [2021-11-17 00:03:26,076 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:03:25" (1/1) ... [2021-11-17 00:03:26,094 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:03:25" (1/1) ... [2021-11-17 00:03:26,116 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-17 00:03:26,117 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-17 00:03:26,117 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-17 00:03:26,118 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-17 00:03:26,118 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:03:25" (1/1) ... [2021-11-17 00:03:26,124 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-17 00:03:26,131 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-17 00:03:26,143 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) [2021-11-17 00:03:26,171 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 [2021-11-17 00:03:26,192 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab32 [2021-11-17 00:03:26,192 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab32 [2021-11-17 00:03:26,192 INFO L130 BoogieDeclarations]: Found specification of procedure ttusb_dec_free_iso_urbs [2021-11-17 00:03:26,192 INFO L138 BoogieDeclarations]: Found implementation of procedure ttusb_dec_free_iso_urbs [2021-11-17 00:03:26,193 INFO L130 BoogieDeclarations]: Found specification of procedure usb_submit_urb [2021-11-17 00:03:26,193 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_submit_urb [2021-11-17 00:03:26,193 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-17 00:03:26,193 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-17 00:03:26,193 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_interface [2021-11-17 00:03:26,193 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_interface [2021-11-17 00:03:26,193 INFO L130 BoogieDeclarations]: Found specification of procedure dvb_unregister_adapter [2021-11-17 00:03:26,193 INFO L138 BoogieDeclarations]: Found implementation of procedure dvb_unregister_adapter [2021-11-17 00:03:26,194 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-17 00:03:26,194 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-17 00:03:26,194 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_iso_mutex_of_ttusb_dec [2021-11-17 00:03:26,194 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_iso_mutex_of_ttusb_dec [2021-11-17 00:03:26,194 INFO L130 BoogieDeclarations]: Found specification of procedure ttusb_dec_start_iso_xfer [2021-11-17 00:03:26,194 INFO L138 BoogieDeclarations]: Found implementation of procedure ttusb_dec_start_iso_xfer [2021-11-17 00:03:26,194 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-11-17 00:03:26,194 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-11-17 00:03:26,194 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-11-17 00:03:26,195 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-11-17 00:03:26,195 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_usb_mutex_of_ttusb_dec [2021-11-17 00:03:26,195 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_usb_mutex_of_ttusb_dec [2021-11-17 00:03:26,195 INFO L130 BoogieDeclarations]: Found specification of procedure dvb_dmx_release [2021-11-17 00:03:26,195 INFO L138 BoogieDeclarations]: Found implementation of procedure dvb_dmx_release [2021-11-17 00:03:26,195 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-11-17 00:03:26,195 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-11-17 00:03:26,195 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-17 00:03:26,195 INFO L130 BoogieDeclarations]: Found specification of procedure input_event [2021-11-17 00:03:26,196 INFO L138 BoogieDeclarations]: Found implementation of procedure input_event [2021-11-17 00:03:26,196 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2021-11-17 00:03:26,196 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2021-11-17 00:03:26,196 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-17 00:03:26,196 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2021-11-17 00:03:26,196 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2021-11-17 00:03:26,196 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_interruptible [2021-11-17 00:03:26,197 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_interruptible [2021-11-17 00:03:26,197 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-17 00:03:26,197 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-17 00:03:26,197 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2021-11-17 00:03:26,197 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2021-11-17 00:03:26,197 INFO L130 BoogieDeclarations]: Found specification of procedure __mutex_init [2021-11-17 00:03:26,197 INFO L138 BoogieDeclarations]: Found implementation of procedure __mutex_init [2021-11-17 00:03:26,198 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2021-11-17 00:03:26,198 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2021-11-17 00:03:26,198 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2021-11-17 00:03:26,198 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2021-11-17 00:03:26,198 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab16 [2021-11-17 00:03:26,198 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab16 [2021-11-17 00:03:26,198 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2021-11-17 00:03:26,199 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2021-11-17 00:03:26,199 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_intfdata [2021-11-17 00:03:26,199 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_intfdata [2021-11-17 00:03:26,199 INFO L130 BoogieDeclarations]: Found specification of procedure ttusb_dec_set_model [2021-11-17 00:03:26,199 INFO L138 BoogieDeclarations]: Found implementation of procedure ttusb_dec_set_model [2021-11-17 00:03:26,200 INFO L130 BoogieDeclarations]: Found specification of procedure release_firmware [2021-11-17 00:03:26,200 INFO L138 BoogieDeclarations]: Found implementation of procedure release_firmware [2021-11-17 00:03:26,200 INFO L130 BoogieDeclarations]: Found specification of procedure input_report_key [2021-11-17 00:03:26,201 INFO L138 BoogieDeclarations]: Found implementation of procedure input_report_key [2021-11-17 00:03:26,201 INFO L130 BoogieDeclarations]: Found specification of procedure ttusb_dec_stop_iso_xfer [2021-11-17 00:03:26,201 INFO L138 BoogieDeclarations]: Found implementation of procedure ttusb_dec_stop_iso_xfer [2021-11-17 00:03:26,201 INFO L130 BoogieDeclarations]: Found specification of procedure usb_alloc_urb [2021-11-17 00:03:26,201 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_alloc_urb [2021-11-17 00:03:26,201 INFO L130 BoogieDeclarations]: Found specification of procedure dvb_filter_pes2ts_init [2021-11-17 00:03:26,202 INFO L138 BoogieDeclarations]: Found implementation of procedure dvb_filter_pes2ts_init [2021-11-17 00:03:26,202 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-17 00:03:26,202 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2021-11-17 00:03:26,202 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2021-11-17 00:03:26,202 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2021-11-17 00:03:26,202 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2021-11-17 00:03:26,203 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-17 00:03:26,203 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~X~$Pointer$~X~int~X~$Pointer$~X~int~TO~int [2021-11-17 00:03:26,203 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~X~$Pointer$~X~int~X~$Pointer$~X~int~TO~int [2021-11-17 00:03:26,203 INFO L130 BoogieDeclarations]: Found specification of procedure usb_bulk_msg [2021-11-17 00:03:26,203 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_bulk_msg [2021-11-17 00:03:26,203 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-17 00:03:26,203 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-11-17 00:03:26,203 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-11-17 00:03:26,203 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2021-11-17 00:03:26,204 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2021-11-17 00:03:26,204 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_urb [2021-11-17 00:03:26,204 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_urb [2021-11-17 00:03:26,204 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-11-17 00:03:26,204 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-11-17 00:03:26,204 INFO L130 BoogieDeclarations]: Found specification of procedure list_add_tail [2021-11-17 00:03:26,204 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add_tail [2021-11-17 00:03:26,204 INFO L130 BoogieDeclarations]: Found specification of procedure ttusb_dec_send_command [2021-11-17 00:03:26,204 INFO L138 BoogieDeclarations]: Found implementation of procedure ttusb_dec_send_command [2021-11-17 00:03:26,205 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-17 00:03:26,205 INFO L130 BoogieDeclarations]: Found specification of procedure ttusb_dec_setup_urbs [2021-11-17 00:03:26,205 INFO L138 BoogieDeclarations]: Found implementation of procedure ttusb_dec_setup_urbs [2021-11-17 00:03:26,205 INFO L130 BoogieDeclarations]: Found specification of procedure input_sync [2021-11-17 00:03:26,205 INFO L138 BoogieDeclarations]: Found implementation of procedure input_sync [2021-11-17 00:03:26,206 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-17 00:03:26,206 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-17 00:03:26,206 INFO L130 BoogieDeclarations]: Found specification of procedure ttusb_dec_set_pids [2021-11-17 00:03:26,206 INFO L138 BoogieDeclarations]: Found implementation of procedure ttusb_dec_set_pids [2021-11-17 00:03:26,206 INFO L130 BoogieDeclarations]: Found specification of procedure ttusb_dec_exit_usb [2021-11-17 00:03:26,207 INFO L138 BoogieDeclarations]: Found implementation of procedure ttusb_dec_exit_usb [2021-11-17 00:03:26,207 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-17 00:03:26,207 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-17 00:03:26,207 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-17 00:03:26,207 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_interruptible_iso_mutex_of_ttusb_dec [2021-11-17 00:03:26,207 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_interruptible_iso_mutex_of_ttusb_dec [2021-11-17 00:03:26,208 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-17 00:03:26,208 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-17 00:03:26,208 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_urb [2021-11-17 00:03:26,208 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_urb [2021-11-17 00:03:26,208 INFO L130 BoogieDeclarations]: Found specification of procedure dvb_dmxdev_release [2021-11-17 00:03:26,208 INFO L138 BoogieDeclarations]: Found implementation of procedure dvb_dmxdev_release [2021-11-17 00:03:26,208 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-11-17 00:03:26,209 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-11-17 00:03:26,209 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-17 00:03:26,209 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-17 00:03:26,209 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-17 00:03:26,584 INFO L236 CfgBuilder]: Building ICFG [2021-11-17 00:03:26,590 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-17 00:03:30,584 INFO L277 CfgBuilder]: Performing block encoding [2021-11-17 00:03:30,593 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-17 00:03:30,593 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-17 00:03:30,595 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 12:03:30 BoogieIcfgContainer [2021-11-17 00:03:30,595 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-17 00:03:30,596 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-17 00:03:30,596 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-17 00:03:30,598 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-17 00:03:30,598 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.11 12:03:24" (1/3) ... [2021-11-17 00:03:30,599 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4627a8cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 12:03:30, skipping insertion in model container [2021-11-17 00:03:30,599 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:03:25" (2/3) ... [2021-11-17 00:03:30,599 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4627a8cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 12:03:30, skipping insertion in model container [2021-11-17 00:03:30,599 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 12:03:30" (3/3) ... [2021-11-17 00:03:30,600 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.8-rc1-32_7a-drivers--media--usb--ttusb-dec--ttusb_dec.ko-ldv_main0.cil.out.i [2021-11-17 00:03:30,603 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-17 00:03:30,603 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-17 00:03:30,631 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-17 00:03:30,635 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 [2021-11-17 00:03:30,635 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-17 00:03:30,655 INFO L276 IsEmpty]: Start isEmpty. Operand has 952 states, 696 states have (on average 1.3261494252873562) internal successors, (923), 716 states have internal predecessors, (923), 204 states have call successors, (204), 50 states have call predecessors, (204), 50 states have return successors, (204), 198 states have call predecessors, (204), 204 states have call successors, (204) [2021-11-17 00:03:30,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-17 00:03:30,658 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 00:03:30,658 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 00:03:30,658 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 00:03:30,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 00:03:30,662 INFO L85 PathProgramCache]: Analyzing trace with hash 1755858725, now seen corresponding path program 1 times [2021-11-17 00:03:30,667 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 00:03:30,667 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1833553361] [2021-11-17 00:03:30,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 00:03:30,668 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 00:03:30,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:03:30,966 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-17 00:03:30,966 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 00:03:30,966 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1833553361] [2021-11-17 00:03:30,967 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1833553361] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 00:03:30,967 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 00:03:30,967 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-17 00:03:30,968 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377622357] [2021-11-17 00:03:30,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 00:03:30,971 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-17 00:03:30,971 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 00:03:31,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-17 00:03:31,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-17 00:03:31,020 INFO L87 Difference]: Start difference. First operand has 952 states, 696 states have (on average 1.3261494252873562) internal successors, (923), 716 states have internal predecessors, (923), 204 states have call successors, (204), 50 states have call predecessors, (204), 50 states have return successors, (204), 198 states have call predecessors, (204), 204 states have call successors, (204) Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-17 00:03:31,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 00:03:31,879 INFO L93 Difference]: Finished difference Result 2823 states and 4045 transitions. [2021-11-17 00:03:31,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-17 00:03:31,881 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-11-17 00:03:31,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 00:03:31,899 INFO L225 Difference]: With dead ends: 2823 [2021-11-17 00:03:31,899 INFO L226 Difference]: Without dead ends: 1868 [2021-11-17 00:03:31,909 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-17 00:03:31,913 INFO L933 BasicCegarLoop]: 1589 mSDtfsCounter, 1313 mSDsluCounter, 1288 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1313 SdHoareTripleChecker+Valid, 2877 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-17 00:03:31,913 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1313 Valid, 2877 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-17 00:03:31,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1868 states. [2021-11-17 00:03:32,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1868 to 1863. [2021-11-17 00:03:32,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1863 states, 1368 states have (on average 1.3216374269005848) internal successors, (1808), 1399 states have internal predecessors, (1808), 397 states have call successors, (397), 99 states have call predecessors, (397), 97 states have return successors, (398), 374 states have call predecessors, (398), 386 states have call successors, (398) [2021-11-17 00:03:32,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1863 states to 1863 states and 2603 transitions. [2021-11-17 00:03:32,050 INFO L78 Accepts]: Start accepts. Automaton has 1863 states and 2603 transitions. Word has length 9 [2021-11-17 00:03:32,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 00:03:32,050 INFO L470 AbstractCegarLoop]: Abstraction has 1863 states and 2603 transitions. [2021-11-17 00:03:32,050 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-17 00:03:32,051 INFO L276 IsEmpty]: Start isEmpty. Operand 1863 states and 2603 transitions. [2021-11-17 00:03:32,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-17 00:03:32,052 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 00:03:32,052 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 00:03:32,052 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-17 00:03:32,053 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 00:03:32,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 00:03:32,055 INFO L85 PathProgramCache]: Analyzing trace with hash -1403360505, now seen corresponding path program 1 times [2021-11-17 00:03:32,055 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 00:03:32,055 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [153945469] [2021-11-17 00:03:32,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 00:03:32,056 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 00:03:32,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:03:32,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-17 00:03:32,197 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 00:03:32,198 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [153945469] [2021-11-17 00:03:32,198 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [153945469] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 00:03:32,198 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 00:03:32,198 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-17 00:03:32,198 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234577402] [2021-11-17 00:03:32,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 00:03:32,199 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-17 00:03:32,200 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 00:03:32,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-17 00:03:32,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-17 00:03:32,200 INFO L87 Difference]: Start difference. First operand 1863 states and 2603 transitions. Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-17 00:03:32,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 00:03:32,546 INFO L93 Difference]: Finished difference Result 1865 states and 2604 transitions. [2021-11-17 00:03:32,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-17 00:03:32,546 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-11-17 00:03:32,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 00:03:32,553 INFO L225 Difference]: With dead ends: 1865 [2021-11-17 00:03:32,554 INFO L226 Difference]: Without dead ends: 1862 [2021-11-17 00:03:32,555 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-17 00:03:32,556 INFO L933 BasicCegarLoop]: 1311 mSDtfsCounter, 1305 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1305 SdHoareTripleChecker+Valid, 1311 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-17 00:03:32,556 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1305 Valid, 1311 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-17 00:03:32,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1862 states. [2021-11-17 00:03:32,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1862 to 1862. [2021-11-17 00:03:32,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1862 states, 1368 states have (on average 1.320906432748538) internal successors, (1807), 1398 states have internal predecessors, (1807), 396 states have call successors, (396), 99 states have call predecessors, (396), 97 states have return successors, (398), 374 states have call predecessors, (398), 386 states have call successors, (398) [2021-11-17 00:03:32,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1862 states to 1862 states and 2601 transitions. [2021-11-17 00:03:32,604 INFO L78 Accepts]: Start accepts. Automaton has 1862 states and 2601 transitions. Word has length 10 [2021-11-17 00:03:32,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 00:03:32,604 INFO L470 AbstractCegarLoop]: Abstraction has 1862 states and 2601 transitions. [2021-11-17 00:03:32,604 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-17 00:03:32,604 INFO L276 IsEmpty]: Start isEmpty. Operand 1862 states and 2601 transitions. [2021-11-17 00:03:32,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-17 00:03:32,605 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 00:03:32,605 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 00:03:32,605 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-17 00:03:32,605 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 00:03:32,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 00:03:32,606 INFO L85 PathProgramCache]: Analyzing trace with hash -554903960, now seen corresponding path program 1 times [2021-11-17 00:03:32,606 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 00:03:32,606 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [36234645] [2021-11-17 00:03:32,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 00:03:32,606 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 00:03:32,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:03:32,670 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-17 00:03:32,670 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 00:03:32,671 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [36234645] [2021-11-17 00:03:32,671 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [36234645] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 00:03:32,671 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 00:03:32,671 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-17 00:03:32,672 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683460804] [2021-11-17 00:03:32,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 00:03:32,672 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-17 00:03:32,672 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 00:03:32,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-17 00:03:32,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-17 00:03:32,674 INFO L87 Difference]: Start difference. First operand 1862 states and 2601 transitions. Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-17 00:03:33,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 00:03:33,098 INFO L93 Difference]: Finished difference Result 1864 states and 2602 transitions. [2021-11-17 00:03:33,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-17 00:03:33,098 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-11-17 00:03:33,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 00:03:33,105 INFO L225 Difference]: With dead ends: 1864 [2021-11-17 00:03:33,105 INFO L226 Difference]: Without dead ends: 1861 [2021-11-17 00:03:33,106 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-17 00:03:33,106 INFO L933 BasicCegarLoop]: 1309 mSDtfsCounter, 1302 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1302 SdHoareTripleChecker+Valid, 1309 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-17 00:03:33,107 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1302 Valid, 1309 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-17 00:03:33,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1861 states. [2021-11-17 00:03:33,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1861 to 1861. [2021-11-17 00:03:33,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1861 states, 1368 states have (on average 1.3201754385964912) internal successors, (1806), 1397 states have internal predecessors, (1806), 395 states have call successors, (395), 99 states have call predecessors, (395), 97 states have return successors, (398), 374 states have call predecessors, (398), 386 states have call successors, (398) [2021-11-17 00:03:33,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1861 states to 1861 states and 2599 transitions. [2021-11-17 00:03:33,155 INFO L78 Accepts]: Start accepts. Automaton has 1861 states and 2599 transitions. Word has length 11 [2021-11-17 00:03:33,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 00:03:33,156 INFO L470 AbstractCegarLoop]: Abstraction has 1861 states and 2599 transitions. [2021-11-17 00:03:33,156 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-17 00:03:33,156 INFO L276 IsEmpty]: Start isEmpty. Operand 1861 states and 2599 transitions. [2021-11-17 00:03:33,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-17 00:03:33,156 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 00:03:33,156 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 00:03:33,157 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-17 00:03:33,157 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 00:03:33,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 00:03:33,157 INFO L85 PathProgramCache]: Analyzing trace with hash -22549974, now seen corresponding path program 1 times [2021-11-17 00:03:33,157 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 00:03:33,157 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679326860] [2021-11-17 00:03:33,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 00:03:33,158 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 00:03:33,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:03:33,234 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-17 00:03:33,235 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 00:03:33,235 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1679326860] [2021-11-17 00:03:33,235 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1679326860] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 00:03:33,235 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 00:03:33,235 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-17 00:03:33,236 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349997323] [2021-11-17 00:03:33,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 00:03:33,236 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-17 00:03:33,236 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 00:03:33,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-17 00:03:33,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-17 00:03:33,237 INFO L87 Difference]: Start difference. First operand 1861 states and 2599 transitions. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-17 00:03:34,294 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:03:34,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 00:03:34,486 INFO L93 Difference]: Finished difference Result 5538 states and 7845 transitions. [2021-11-17 00:03:34,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-17 00:03:34,487 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-11-17 00:03:34,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 00:03:34,500 INFO L225 Difference]: With dead ends: 5538 [2021-11-17 00:03:34,500 INFO L226 Difference]: Without dead ends: 3675 [2021-11-17 00:03:34,510 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-17 00:03:34,515 INFO L933 BasicCegarLoop]: 1609 mSDtfsCounter, 1307 mSDsluCounter, 1289 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1307 SdHoareTripleChecker+Valid, 2898 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-11-17 00:03:34,515 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1307 Valid, 2898 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-11-17 00:03:34,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3675 states. [2021-11-17 00:03:34,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3675 to 3655. [2021-11-17 00:03:34,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3655 states, 2697 states have (on average 1.32146829810901) internal successors, (3564), 2751 states have internal predecessors, (3564), 766 states have call successors, (766), 194 states have call predecessors, (766), 191 states have return successors, (830), 729 states have call predecessors, (830), 754 states have call successors, (830) [2021-11-17 00:03:34,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3655 states to 3655 states and 5160 transitions. [2021-11-17 00:03:34,649 INFO L78 Accepts]: Start accepts. Automaton has 3655 states and 5160 transitions. Word has length 12 [2021-11-17 00:03:34,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 00:03:34,649 INFO L470 AbstractCegarLoop]: Abstraction has 3655 states and 5160 transitions. [2021-11-17 00:03:34,649 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-17 00:03:34,650 INFO L276 IsEmpty]: Start isEmpty. Operand 3655 states and 5160 transitions. [2021-11-17 00:03:34,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-11-17 00:03:34,659 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 00:03:34,659 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 3, 3, 3, 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] [2021-11-17 00:03:34,659 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-17 00:03:34,660 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 00:03:34,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 00:03:34,665 INFO L85 PathProgramCache]: Analyzing trace with hash -1548184114, now seen corresponding path program 1 times [2021-11-17 00:03:34,666 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 00:03:34,666 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [740829022] [2021-11-17 00:03:34,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 00:03:34,666 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 00:03:34,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:03:34,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-11-17 00:03:34,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:03:34,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:03:34,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:03:34,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:03:34,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:03:34,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-11-17 00:03:34,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:03:34,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-11-17 00:03:34,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:03:34,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-11-17 00:03:34,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:03:34,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-11-17 00:03:34,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:03:34,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-11-17 00:03:34,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:03:34,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-11-17 00:03:34,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:03:34,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-11-17 00:03:34,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:03:34,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-11-17 00:03:34,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:03:34,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-11-17 00:03:34,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:03:34,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:03:34,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:03:34,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-11-17 00:03:34,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:03:34,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:03:34,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:03:34,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-11-17 00:03:34,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:03:34,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-11-17 00:03:34,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:03:34,963 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2021-11-17 00:03:34,964 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 00:03:34,964 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [740829022] [2021-11-17 00:03:34,964 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [740829022] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 00:03:34,964 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 00:03:34,964 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-17 00:03:34,964 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619798102] [2021-11-17 00:03:34,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 00:03:34,965 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-17 00:03:34,965 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 00:03:34,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-17 00:03:34,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-17 00:03:34,966 INFO L87 Difference]: Start difference. First operand 3655 states and 5160 transitions. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 3 states have internal predecessors, (77), 2 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-11-17 00:03:37,511 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:03:38,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 00:03:38,619 INFO L93 Difference]: Finished difference Result 7439 states and 10705 transitions. [2021-11-17 00:03:38,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-17 00:03:38,620 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 3 states have internal predecessors, (77), 2 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 134 [2021-11-17 00:03:38,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 00:03:38,639 INFO L225 Difference]: With dead ends: 7439 [2021-11-17 00:03:38,640 INFO L226 Difference]: Without dead ends: 3787 [2021-11-17 00:03:38,660 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-17 00:03:38,661 INFO L933 BasicCegarLoop]: 1189 mSDtfsCounter, 1356 mSDsluCounter, 551 mSDsCounter, 0 mSdLazyCounter, 324 mSolverCounterSat, 374 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1493 SdHoareTripleChecker+Valid, 1740 SdHoareTripleChecker+Invalid, 699 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 374 IncrementalHoareTripleChecker+Valid, 324 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2021-11-17 00:03:38,661 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1493 Valid, 1740 Invalid, 699 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [374 Valid, 324 Invalid, 1 Unknown, 0 Unchecked, 3.5s Time] [2021-11-17 00:03:38,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3787 states. [2021-11-17 00:03:38,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3787 to 3635. [2021-11-17 00:03:38,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3635 states, 2677 states have (on average 1.2581247665296975) internal successors, (3368), 2731 states have internal predecessors, (3368), 766 states have call successors, (766), 194 states have call predecessors, (766), 191 states have return successors, (830), 729 states have call predecessors, (830), 754 states have call successors, (830) [2021-11-17 00:03:38,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3635 states to 3635 states and 4964 transitions. [2021-11-17 00:03:38,789 INFO L78 Accepts]: Start accepts. Automaton has 3635 states and 4964 transitions. Word has length 134 [2021-11-17 00:03:38,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 00:03:38,789 INFO L470 AbstractCegarLoop]: Abstraction has 3635 states and 4964 transitions. [2021-11-17 00:03:38,789 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 3 states have internal predecessors, (77), 2 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-11-17 00:03:38,790 INFO L276 IsEmpty]: Start isEmpty. Operand 3635 states and 4964 transitions. [2021-11-17 00:03:38,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-11-17 00:03:38,796 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 00:03:38,796 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 00:03:38,796 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-17 00:03:38,796 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 00:03:38,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 00:03:38,797 INFO L85 PathProgramCache]: Analyzing trace with hash 761767741, now seen corresponding path program 1 times [2021-11-17 00:03:38,797 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 00:03:38,797 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1493295894] [2021-11-17 00:03:38,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 00:03:38,797 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 00:03:38,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:03:38,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-11-17 00:03:38,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:03:38,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-17 00:03:38,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:03:38,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-11-17 00:03:38,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:03:38,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-17 00:03:38,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:03:38,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 00:03:38,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:03:38,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:03:38,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:03:39,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-17 00:03:39,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:03:39,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-11-17 00:03:39,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:03:39,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-11-17 00:03:39,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:03:39,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-11-17 00:03:39,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:03:39,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:03:39,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:03:39,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-11-17 00:03:39,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:03:39,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-11-17 00:03:39,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:03:39,060 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-11-17 00:03:39,060 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 00:03:39,060 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1493295894] [2021-11-17 00:03:39,060 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1493295894] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 00:03:39,060 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 00:03:39,061 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-17 00:03:39,061 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387146661] [2021-11-17 00:03:39,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 00:03:39,062 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-17 00:03:39,062 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 00:03:39,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-17 00:03:39,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-17 00:03:39,063 INFO L87 Difference]: Start difference. First operand 3635 states and 4964 transitions. Second operand has 6 states, 6 states have (on average 16.0) internal successors, (96), 4 states have internal predecessors, (96), 2 states have call successors, (16), 4 states have call predecessors, (16), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-11-17 00:03:40,353 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.26s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:03:42,761 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:03:44,775 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:03:47,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 00:03:47,926 INFO L93 Difference]: Finished difference Result 7642 states and 10693 transitions. [2021-11-17 00:03:47,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-17 00:03:47,929 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.0) internal successors, (96), 4 states have internal predecessors, (96), 2 states have call successors, (16), 4 states have call predecessors, (16), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 134 [2021-11-17 00:03:47,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 00:03:47,946 INFO L225 Difference]: With dead ends: 7642 [2021-11-17 00:03:47,947 INFO L226 Difference]: Without dead ends: 4010 [2021-11-17 00:03:47,960 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-11-17 00:03:47,961 INFO L933 BasicCegarLoop]: 1182 mSDtfsCounter, 898 mSDsluCounter, 2577 mSDsCounter, 0 mSdLazyCounter, 1271 mSolverCounterSat, 509 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1037 SdHoareTripleChecker+Valid, 3759 SdHoareTripleChecker+Invalid, 1782 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 509 IncrementalHoareTripleChecker+Valid, 1271 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.7s IncrementalHoareTripleChecker+Time [2021-11-17 00:03:47,962 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1037 Valid, 3759 Invalid, 1782 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [509 Valid, 1271 Invalid, 2 Unknown, 0 Unchecked, 8.7s Time] [2021-11-17 00:03:47,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4010 states. [2021-11-17 00:03:48,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4010 to 3675. [2021-11-17 00:03:48,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3675 states, 2717 states have (on average 1.2598454177401546) internal successors, (3423), 2771 states have internal predecessors, (3423), 766 states have call successors, (766), 194 states have call predecessors, (766), 191 states have return successors, (830), 729 states have call predecessors, (830), 754 states have call successors, (830) [2021-11-17 00:03:48,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3675 states to 3675 states and 5019 transitions. [2021-11-17 00:03:48,110 INFO L78 Accepts]: Start accepts. Automaton has 3675 states and 5019 transitions. Word has length 134 [2021-11-17 00:03:48,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 00:03:48,111 INFO L470 AbstractCegarLoop]: Abstraction has 3675 states and 5019 transitions. [2021-11-17 00:03:48,112 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.0) internal successors, (96), 4 states have internal predecessors, (96), 2 states have call successors, (16), 4 states have call predecessors, (16), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-11-17 00:03:48,112 INFO L276 IsEmpty]: Start isEmpty. Operand 3675 states and 5019 transitions. [2021-11-17 00:03:48,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-11-17 00:03:48,115 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 00:03:48,115 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 3, 3, 3, 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] [2021-11-17 00:03:48,115 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-17 00:03:48,115 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 00:03:48,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 00:03:48,116 INFO L85 PathProgramCache]: Analyzing trace with hash -1103091386, now seen corresponding path program 1 times [2021-11-17 00:03:48,116 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 00:03:48,116 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [559704210] [2021-11-17 00:03:48,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 00:03:48,116 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 00:03:48,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:03:48,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-11-17 00:03:48,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:03:48,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:03:48,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:03:48,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:03:48,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:03:48,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-11-17 00:03:48,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:03:48,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-11-17 00:03:48,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:03:48,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-11-17 00:03:48,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:03:48,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-11-17 00:03:48,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:03:48,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-11-17 00:03:48,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:03:48,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-11-17 00:03:48,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:03:48,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-11-17 00:03:48,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:03:48,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-11-17 00:03:48,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:03:48,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-11-17 00:03:48,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:03:48,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:03:48,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:03:48,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-11-17 00:03:48,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:03:48,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:03:48,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:03:48,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-11-17 00:03:48,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:03:48,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-11-17 00:03:48,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:03:48,446 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2021-11-17 00:03:48,447 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 00:03:48,447 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [559704210] [2021-11-17 00:03:48,447 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [559704210] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 00:03:48,447 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 00:03:48,447 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-17 00:03:48,448 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570269754] [2021-11-17 00:03:48,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 00:03:48,448 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-17 00:03:48,448 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 00:03:48,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-17 00:03:48,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-17 00:03:48,449 INFO L87 Difference]: Start difference. First operand 3675 states and 5019 transitions. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 3 states have internal predecessors, (77), 3 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2021-11-17 00:03:50,991 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:03:52,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 00:03:52,031 INFO L93 Difference]: Finished difference Result 7319 states and 10011 transitions. [2021-11-17 00:03:52,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-17 00:03:52,032 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 3 states have internal predecessors, (77), 3 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 134 [2021-11-17 00:03:52,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 00:03:52,047 INFO L225 Difference]: With dead ends: 7319 [2021-11-17 00:03:52,047 INFO L226 Difference]: Without dead ends: 3647 [2021-11-17 00:03:52,058 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-17 00:03:52,059 INFO L933 BasicCegarLoop]: 1162 mSDtfsCounter, 1274 mSDsluCounter, 536 mSDsCounter, 0 mSdLazyCounter, 242 mSolverCounterSat, 326 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1394 SdHoareTripleChecker+Valid, 1698 SdHoareTripleChecker+Invalid, 569 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 326 IncrementalHoareTripleChecker+Valid, 242 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2021-11-17 00:03:52,059 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1394 Valid, 1698 Invalid, 569 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [326 Valid, 242 Invalid, 1 Unknown, 0 Unchecked, 3.5s Time] [2021-11-17 00:03:52,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3647 states. [2021-11-17 00:03:52,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3647 to 3495. [2021-11-17 00:03:52,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3495 states, 2569 states have (on average 1.253016738030362) internal successors, (3219), 2623 states have internal predecessors, (3219), 734 states have call successors, (734), 194 states have call predecessors, (734), 191 states have return successors, (794), 697 states have call predecessors, (794), 722 states have call successors, (794) [2021-11-17 00:03:52,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3495 states to 3495 states and 4747 transitions. [2021-11-17 00:03:52,221 INFO L78 Accepts]: Start accepts. Automaton has 3495 states and 4747 transitions. Word has length 134 [2021-11-17 00:03:52,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 00:03:52,221 INFO L470 AbstractCegarLoop]: Abstraction has 3495 states and 4747 transitions. [2021-11-17 00:03:52,221 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 3 states have internal predecessors, (77), 3 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2021-11-17 00:03:52,221 INFO L276 IsEmpty]: Start isEmpty. Operand 3495 states and 4747 transitions. [2021-11-17 00:03:52,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2021-11-17 00:03:52,224 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 00:03:52,224 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 00:03:52,224 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-17 00:03:52,224 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 00:03:52,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 00:03:52,225 INFO L85 PathProgramCache]: Analyzing trace with hash -1886976464, now seen corresponding path program 1 times [2021-11-17 00:03:52,225 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 00:03:52,225 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333943358] [2021-11-17 00:03:52,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 00:03:52,226 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 00:03:52,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:03:52,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-11-17 00:03:52,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:03:52,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:03:52,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:03:52,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:03:52,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:03:52,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-11-17 00:03:52,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:03:52,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-11-17 00:03:52,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:03:52,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-11-17 00:03:52,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:03:52,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-11-17 00:03:52,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:03:52,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-11-17 00:03:52,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:03:52,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-11-17 00:03:52,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:03:52,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-11-17 00:03:52,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:03:52,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-11-17 00:03:52,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:03:52,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-11-17 00:03:52,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:03:52,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:03:52,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:03:52,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-11-17 00:03:52,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:03:52,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:03:52,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:03:52,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-11-17 00:03:52,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:03:52,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-11-17 00:03:52,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:03:52,495 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2021-11-17 00:03:52,495 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 00:03:52,496 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [333943358] [2021-11-17 00:03:52,496 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [333943358] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 00:03:52,496 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 00:03:52,496 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-17 00:03:52,496 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422916788] [2021-11-17 00:03:52,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 00:03:52,497 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-17 00:03:52,497 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 00:03:52,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-17 00:03:52,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-17 00:03:52,497 INFO L87 Difference]: Start difference. First operand 3495 states and 4747 transitions. Second operand has 4 states, 4 states have (on average 24.25) internal successors, (97), 3 states have internal predecessors, (97), 3 states have call successors, (19), 4 states have call predecessors, (19), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-11-17 00:03:55,162 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:03:59,123 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:03:59,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 00:03:59,632 INFO L93 Difference]: Finished difference Result 7151 states and 9762 transitions. [2021-11-17 00:03:59,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-17 00:03:59,633 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 3 states have internal predecessors, (97), 3 states have call successors, (19), 4 states have call predecessors, (19), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 151 [2021-11-17 00:03:59,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 00:03:59,647 INFO L225 Difference]: With dead ends: 7151 [2021-11-17 00:03:59,648 INFO L226 Difference]: Without dead ends: 3659 [2021-11-17 00:03:59,657 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-17 00:03:59,658 INFO L933 BasicCegarLoop]: 2193 mSDtfsCounter, 1321 mSDsluCounter, 1961 mSDsCounter, 0 mSdLazyCounter, 709 mSolverCounterSat, 355 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1482 SdHoareTripleChecker+Valid, 4154 SdHoareTripleChecker+Invalid, 1066 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 355 IncrementalHoareTripleChecker+Valid, 709 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.0s IncrementalHoareTripleChecker+Time [2021-11-17 00:03:59,658 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1482 Valid, 4154 Invalid, 1066 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [355 Valid, 709 Invalid, 2 Unknown, 0 Unchecked, 7.0s Time] [2021-11-17 00:03:59,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3659 states. [2021-11-17 00:03:59,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3659 to 3493. [2021-11-17 00:03:59,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3493 states, 2567 states have (on average 1.2516556291390728) internal successors, (3213), 2622 states have internal predecessors, (3213), 734 states have call successors, (734), 194 states have call predecessors, (734), 191 states have return successors, (770), 696 states have call predecessors, (770), 722 states have call successors, (770) [2021-11-17 00:03:59,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3493 states to 3493 states and 4717 transitions. [2021-11-17 00:03:59,809 INFO L78 Accepts]: Start accepts. Automaton has 3493 states and 4717 transitions. Word has length 151 [2021-11-17 00:03:59,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 00:03:59,810 INFO L470 AbstractCegarLoop]: Abstraction has 3493 states and 4717 transitions. [2021-11-17 00:03:59,810 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 3 states have internal predecessors, (97), 3 states have call successors, (19), 4 states have call predecessors, (19), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-11-17 00:03:59,810 INFO L276 IsEmpty]: Start isEmpty. Operand 3493 states and 4717 transitions. [2021-11-17 00:03:59,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2021-11-17 00:03:59,811 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 00:03:59,812 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 00:03:59,812 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-17 00:03:59,812 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 00:03:59,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 00:03:59,812 INFO L85 PathProgramCache]: Analyzing trace with hash 413846126, now seen corresponding path program 1 times [2021-11-17 00:03:59,813 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 00:03:59,813 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [901810546] [2021-11-17 00:03:59,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 00:03:59,813 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 00:03:59,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:03:59,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-11-17 00:03:59,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:03:59,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:03:59,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:03:59,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:03:59,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:03:59,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-11-17 00:03:59,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:03:59,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-11-17 00:03:59,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:03:59,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-11-17 00:03:59,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:03:59,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-11-17 00:03:59,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:03:59,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-11-17 00:03:59,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:03:59,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-11-17 00:03:59,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:04:00,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-11-17 00:04:00,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:04:00,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-11-17 00:04:00,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:04:00,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-11-17 00:04:00,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:04:00,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:04:00,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:04:00,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-11-17 00:04:00,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:04:00,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:04:00,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:04:00,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-11-17 00:04:00,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:04:00,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-11-17 00:04:00,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:04:00,054 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2021-11-17 00:04:00,054 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 00:04:00,054 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [901810546] [2021-11-17 00:04:00,054 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [901810546] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 00:04:00,054 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 00:04:00,054 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-17 00:04:00,055 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778268975] [2021-11-17 00:04:00,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 00:04:00,055 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-17 00:04:00,055 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 00:04:00,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-17 00:04:00,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-17 00:04:00,056 INFO L87 Difference]: Start difference. First operand 3493 states and 4717 transitions. Second operand has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 5 states have internal predecessors, (97), 2 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-11-17 00:04:02,579 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:04:06,485 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:04:06,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 00:04:06,936 INFO L93 Difference]: Finished difference Result 8753 states and 12077 transitions. [2021-11-17 00:04:06,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-17 00:04:06,936 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 5 states have internal predecessors, (97), 2 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 151 [2021-11-17 00:04:06,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 00:04:06,957 INFO L225 Difference]: With dead ends: 8753 [2021-11-17 00:04:06,960 INFO L226 Difference]: Without dead ends: 5263 [2021-11-17 00:04:06,970 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-11-17 00:04:06,972 INFO L933 BasicCegarLoop]: 1508 mSDtfsCounter, 1181 mSDsluCounter, 4057 mSDsCounter, 0 mSdLazyCounter, 1070 mSolverCounterSat, 434 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1225 SdHoareTripleChecker+Valid, 5565 SdHoareTripleChecker+Invalid, 1506 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 434 IncrementalHoareTripleChecker+Valid, 1070 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time [2021-11-17 00:04:06,972 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1225 Valid, 5565 Invalid, 1506 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [434 Valid, 1070 Invalid, 2 Unknown, 0 Unchecked, 6.7s Time] [2021-11-17 00:04:06,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5263 states. [2021-11-17 00:04:07,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5263 to 3505. [2021-11-17 00:04:07,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3505 states, 2579 states have (on average 1.250484683986041) internal successors, (3225), 2634 states have internal predecessors, (3225), 734 states have call successors, (734), 194 states have call predecessors, (734), 191 states have return successors, (770), 696 states have call predecessors, (770), 722 states have call successors, (770) [2021-11-17 00:04:07,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3505 states to 3505 states and 4729 transitions. [2021-11-17 00:04:07,087 INFO L78 Accepts]: Start accepts. Automaton has 3505 states and 4729 transitions. Word has length 151 [2021-11-17 00:04:07,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 00:04:07,088 INFO L470 AbstractCegarLoop]: Abstraction has 3505 states and 4729 transitions. [2021-11-17 00:04:07,089 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 5 states have internal predecessors, (97), 2 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-11-17 00:04:07,089 INFO L276 IsEmpty]: Start isEmpty. Operand 3505 states and 4729 transitions. [2021-11-17 00:04:07,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2021-11-17 00:04:07,091 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 00:04:07,091 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 00:04:07,091 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-17 00:04:07,091 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 00:04:07,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 00:04:07,091 INFO L85 PathProgramCache]: Analyzing trace with hash -1898802128, now seen corresponding path program 1 times [2021-11-17 00:04:07,092 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 00:04:07,092 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605816467] [2021-11-17 00:04:07,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 00:04:07,092 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 00:04:07,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:04:07,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-11-17 00:04:07,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:04:07,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:04:07,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:04:07,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:04:07,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:04:07,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-11-17 00:04:07,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:04:07,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-11-17 00:04:07,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:04:07,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-11-17 00:04:07,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:04:07,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-11-17 00:04:07,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:04:07,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-11-17 00:04:07,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:04:07,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-11-17 00:04:07,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:04:07,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-11-17 00:04:07,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:04:07,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-11-17 00:04:07,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:04:07,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-11-17 00:04:07,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:04:07,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:04:07,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:04:07,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-11-17 00:04:07,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:04:07,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-11-17 00:04:07,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:04:07,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:04:07,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:04:07,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-11-17 00:04:07,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:04:07,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2021-11-17 00:04:07,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:04:07,278 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2021-11-17 00:04:07,278 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 00:04:07,278 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [605816467] [2021-11-17 00:04:07,279 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [605816467] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 00:04:07,279 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 00:04:07,279 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-17 00:04:07,279 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550017243] [2021-11-17 00:04:07,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 00:04:07,279 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-17 00:04:07,279 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 00:04:07,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-17 00:04:07,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-17 00:04:07,280 INFO L87 Difference]: Start difference. First operand 3505 states and 4729 transitions. Second operand has 5 states, 5 states have (on average 20.8) internal successors, (104), 3 states have internal predecessors, (104), 2 states have call successors, (20), 4 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-11-17 00:04:10,282 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:04:12,289 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:04:16,909 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:04:18,919 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:04:19,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 00:04:19,153 INFO L93 Difference]: Finished difference Result 8233 states and 11505 transitions. [2021-11-17 00:04:19,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-17 00:04:19,153 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.8) internal successors, (104), 3 states have internal predecessors, (104), 2 states have call successors, (20), 4 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 160 [2021-11-17 00:04:19,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 00:04:19,169 INFO L225 Difference]: With dead ends: 8233 [2021-11-17 00:04:19,169 INFO L226 Difference]: Without dead ends: 4731 [2021-11-17 00:04:19,177 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-17 00:04:19,177 INFO L933 BasicCegarLoop]: 1435 mSDtfsCounter, 749 mSDsluCounter, 2290 mSDsCounter, 0 mSdLazyCounter, 1078 mSolverCounterSat, 485 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 848 SdHoareTripleChecker+Valid, 3725 SdHoareTripleChecker+Invalid, 1567 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 485 IncrementalHoareTripleChecker+Valid, 1078 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.7s IncrementalHoareTripleChecker+Time [2021-11-17 00:04:19,177 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [848 Valid, 3725 Invalid, 1567 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [485 Valid, 1078 Invalid, 4 Unknown, 0 Unchecked, 11.7s Time] [2021-11-17 00:04:19,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4731 states. [2021-11-17 00:04:19,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4731 to 3509. [2021-11-17 00:04:19,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3509 states, 2583 states have (on average 1.2500967866821526) internal successors, (3229), 2638 states have internal predecessors, (3229), 734 states have call successors, (734), 194 states have call predecessors, (734), 191 states have return successors, (770), 696 states have call predecessors, (770), 722 states have call successors, (770) [2021-11-17 00:04:19,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3509 states to 3509 states and 4733 transitions. [2021-11-17 00:04:19,302 INFO L78 Accepts]: Start accepts. Automaton has 3509 states and 4733 transitions. Word has length 160 [2021-11-17 00:04:19,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 00:04:19,302 INFO L470 AbstractCegarLoop]: Abstraction has 3509 states and 4733 transitions. [2021-11-17 00:04:19,302 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.8) internal successors, (104), 3 states have internal predecessors, (104), 2 states have call successors, (20), 4 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-11-17 00:04:19,302 INFO L276 IsEmpty]: Start isEmpty. Operand 3509 states and 4733 transitions. [2021-11-17 00:04:19,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2021-11-17 00:04:19,305 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 00:04:19,306 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 00:04:19,306 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-17 00:04:19,306 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 00:04:19,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 00:04:19,306 INFO L85 PathProgramCache]: Analyzing trace with hash -458669311, now seen corresponding path program 1 times [2021-11-17 00:04:19,307 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 00:04:19,307 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103295345] [2021-11-17 00:04:19,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 00:04:19,307 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 00:04:19,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:04:19,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-11-17 00:04:19,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:04:19,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:04:19,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:04:19,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:04:19,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:04:19,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-11-17 00:04:19,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:04:19,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-11-17 00:04:19,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:04:19,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-11-17 00:04:19,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:04:19,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-11-17 00:04:19,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:04:19,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-11-17 00:04:19,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:04:19,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-11-17 00:04:19,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:04:19,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-11-17 00:04:19,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:04:19,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-11-17 00:04:19,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:04:19,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-11-17 00:04:19,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:04:19,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:04:19,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:04:19,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-11-17 00:04:19,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:04:19,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:04:19,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:04:19,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-11-17 00:04:19,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:04:19,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-11-17 00:04:19,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:04:19,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:04:19,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:04:19,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2021-11-17 00:04:19,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:04:19,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2021-11-17 00:04:19,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:04:19,538 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2021-11-17 00:04:19,538 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 00:04:19,538 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1103295345] [2021-11-17 00:04:19,539 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1103295345] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-17 00:04:19,539 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [292086390] [2021-11-17 00:04:19,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 00:04:19,539 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-17 00:04:19,539 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-17 00:04:19,540 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) [2021-11-17 00:04:19,544 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-17 00:04:20,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:04:20,057 INFO L263 TraceCheckSpWp]: Trace formula consists of 1990 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-17 00:04:20,068 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-17 00:04:20,320 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-11-17 00:04:20,320 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-17 00:04:20,321 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [292086390] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 00:04:20,321 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-17 00:04:20,321 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2021-11-17 00:04:20,321 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146486916] [2021-11-17 00:04:20,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 00:04:20,321 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-17 00:04:20,321 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 00:04:20,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-17 00:04:20,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-17 00:04:20,322 INFO L87 Difference]: Start difference. First operand 3509 states and 4733 transitions. Second operand has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2021-11-17 00:04:20,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 00:04:20,852 INFO L93 Difference]: Finished difference Result 7031 states and 9503 transitions. [2021-11-17 00:04:20,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-17 00:04:20,859 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 173 [2021-11-17 00:04:20,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 00:04:20,869 INFO L225 Difference]: With dead ends: 7031 [2021-11-17 00:04:20,869 INFO L226 Difference]: Without dead ends: 3525 [2021-11-17 00:04:20,876 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 211 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-17 00:04:20,877 INFO L933 BasicCegarLoop]: 1191 mSDtfsCounter, 4 mSDsluCounter, 1188 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 2379 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-17 00:04:20,877 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 2379 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-17 00:04:20,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3525 states. [2021-11-17 00:04:20,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3525 to 3513. [2021-11-17 00:04:20,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3513 states, 2587 states have (on average 1.2497100889060688) internal successors, (3233), 2642 states have internal predecessors, (3233), 734 states have call successors, (734), 194 states have call predecessors, (734), 191 states have return successors, (770), 696 states have call predecessors, (770), 722 states have call successors, (770) [2021-11-17 00:04:20,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3513 states to 3513 states and 4737 transitions. [2021-11-17 00:04:20,981 INFO L78 Accepts]: Start accepts. Automaton has 3513 states and 4737 transitions. Word has length 173 [2021-11-17 00:04:20,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 00:04:20,981 INFO L470 AbstractCegarLoop]: Abstraction has 3513 states and 4737 transitions. [2021-11-17 00:04:20,981 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2021-11-17 00:04:20,981 INFO L276 IsEmpty]: Start isEmpty. Operand 3513 states and 4737 transitions. [2021-11-17 00:04:20,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2021-11-17 00:04:20,983 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 00:04:20,984 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 00:04:21,022 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-17 00:04:21,207 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-11-17 00:04:21,208 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 00:04:21,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 00:04:21,208 INFO L85 PathProgramCache]: Analyzing trace with hash 1697928550, now seen corresponding path program 1 times [2021-11-17 00:04:21,208 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 00:04:21,209 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1390124454] [2021-11-17 00:04:21,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 00:04:21,209 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 00:04:21,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:04:21,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-11-17 00:04:21,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:04:21,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:04:21,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:04:21,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:04:21,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:04:21,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-11-17 00:04:21,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:04:21,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-11-17 00:04:21,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:04:21,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-11-17 00:04:21,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:04:21,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-11-17 00:04:21,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:04:21,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-11-17 00:04:21,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:04:21,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 00:04:21,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:04:21,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:04:21,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:04:21,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-17 00:04:21,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:04:21,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-11-17 00:04:21,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:04:21,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-11-17 00:04:21,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:04:21,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-11-17 00:04:21,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:04:21,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:04:21,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:04:21,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-11-17 00:04:21,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:04:21,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2021-11-17 00:04:21,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:04:21,404 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2021-11-17 00:04:21,404 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 00:04:21,404 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1390124454] [2021-11-17 00:04:21,405 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1390124454] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-17 00:04:21,405 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [763906451] [2021-11-17 00:04:21,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 00:04:21,405 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-17 00:04:21,405 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-17 00:04:21,406 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) [2021-11-17 00:04:21,424 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-17 00:04:21,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:04:21,918 INFO L263 TraceCheckSpWp]: Trace formula consists of 1902 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-17 00:04:21,922 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-17 00:04:22,195 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-11-17 00:04:22,195 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-17 00:04:22,196 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [763906451] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 00:04:22,198 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-17 00:04:22,199 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2021-11-17 00:04:22,200 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674137133] [2021-11-17 00:04:22,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 00:04:22,200 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-17 00:04:22,201 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 00:04:22,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-17 00:04:22,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-11-17 00:04:22,201 INFO L87 Difference]: Start difference. First operand 3513 states and 4737 transitions. Second operand has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-11-17 00:04:22,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 00:04:22,283 INFO L93 Difference]: Finished difference Result 7039 states and 9511 transitions. [2021-11-17 00:04:22,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-17 00:04:22,283 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 171 [2021-11-17 00:04:22,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 00:04:22,293 INFO L225 Difference]: With dead ends: 7039 [2021-11-17 00:04:22,294 INFO L226 Difference]: Without dead ends: 3529 [2021-11-17 00:04:22,301 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 204 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-11-17 00:04:22,301 INFO L933 BasicCegarLoop]: 1192 mSDtfsCounter, 2 mSDsluCounter, 1188 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 2380 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-17 00:04:22,302 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 2380 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-17 00:04:22,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3529 states. [2021-11-17 00:04:22,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3529 to 3517. [2021-11-17 00:04:22,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3517 states, 2591 states have (on average 1.2493245851022772) internal successors, (3237), 2646 states have internal predecessors, (3237), 734 states have call successors, (734), 194 states have call predecessors, (734), 191 states have return successors, (770), 696 states have call predecessors, (770), 722 states have call successors, (770) [2021-11-17 00:04:22,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3517 states to 3517 states and 4741 transitions. [2021-11-17 00:04:22,395 INFO L78 Accepts]: Start accepts. Automaton has 3517 states and 4741 transitions. Word has length 171 [2021-11-17 00:04:22,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 00:04:22,396 INFO L470 AbstractCegarLoop]: Abstraction has 3517 states and 4741 transitions. [2021-11-17 00:04:22,396 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-11-17 00:04:22,396 INFO L276 IsEmpty]: Start isEmpty. Operand 3517 states and 4741 transitions. [2021-11-17 00:04:22,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2021-11-17 00:04:22,398 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 00:04:22,398 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 00:04:22,418 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-11-17 00:04:22,611 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,SelfDestructingSolverStorable11 [2021-11-17 00:04:22,612 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 00:04:22,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 00:04:22,612 INFO L85 PathProgramCache]: Analyzing trace with hash -1395907559, now seen corresponding path program 1 times [2021-11-17 00:04:22,612 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 00:04:22,612 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320407194] [2021-11-17 00:04:22,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 00:04:22,612 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 00:04:22,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:04:22,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-11-17 00:04:22,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:04:22,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:04:22,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:04:22,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:04:22,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:04:22,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-11-17 00:04:22,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:04:22,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-11-17 00:04:22,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:04:22,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-11-17 00:04:22,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:04:22,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-11-17 00:04:22,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:04:22,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-11-17 00:04:22,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:04:22,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-11-17 00:04:22,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:04:22,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-11-17 00:04:22,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:04:22,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:04:22,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:04:22,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-11-17 00:04:22,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:04:22,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-11-17 00:04:22,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:04:22,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-11-17 00:04:22,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:04:22,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-11-17 00:04:22,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:04:22,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:04:22,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:04:22,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2021-11-17 00:04:22,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:04:22,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2021-11-17 00:04:22,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:04:22,808 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2021-11-17 00:04:22,808 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 00:04:22,808 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [320407194] [2021-11-17 00:04:22,808 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [320407194] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-17 00:04:22,808 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1754442034] [2021-11-17 00:04:22,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 00:04:22,808 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-17 00:04:22,809 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-17 00:04:22,809 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) [2021-11-17 00:04:22,831 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-17 00:04:23,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:04:23,300 INFO L263 TraceCheckSpWp]: Trace formula consists of 1921 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-17 00:04:23,306 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-17 00:04:23,570 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-17 00:04:23,570 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-17 00:04:23,570 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1754442034] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 00:04:23,571 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-17 00:04:23,571 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 8 [2021-11-17 00:04:23,571 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521194230] [2021-11-17 00:04:23,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 00:04:23,571 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-17 00:04:23,571 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 00:04:23,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-17 00:04:23,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-17 00:04:23,572 INFO L87 Difference]: Start difference. First operand 3517 states and 4741 transitions. Second operand has 4 states, 4 states have (on average 32.5) internal successors, (130), 4 states have internal predecessors, (130), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-11-17 00:04:23,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 00:04:23,696 INFO L93 Difference]: Finished difference Result 7058 states and 9510 transitions. [2021-11-17 00:04:23,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-17 00:04:23,697 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.5) internal successors, (130), 4 states have internal predecessors, (130), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 178 [2021-11-17 00:04:23,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 00:04:23,706 INFO L225 Difference]: With dead ends: 7058 [2021-11-17 00:04:23,706 INFO L226 Difference]: Without dead ends: 3540 [2021-11-17 00:04:23,712 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 214 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-11-17 00:04:23,712 INFO L933 BasicCegarLoop]: 1200 mSDtfsCounter, 17 mSDsluCounter, 2381 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 3581 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-17 00:04:23,712 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [17 Valid, 3581 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-17 00:04:23,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3540 states. [2021-11-17 00:04:23,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3540 to 3529. [2021-11-17 00:04:23,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3529 states, 2603 states have (on average 1.2477910103726468) internal successors, (3248), 2658 states have internal predecessors, (3248), 734 states have call successors, (734), 194 states have call predecessors, (734), 191 states have return successors, (770), 696 states have call predecessors, (770), 722 states have call successors, (770) [2021-11-17 00:04:23,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3529 states to 3529 states and 4752 transitions. [2021-11-17 00:04:23,802 INFO L78 Accepts]: Start accepts. Automaton has 3529 states and 4752 transitions. Word has length 178 [2021-11-17 00:04:23,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 00:04:23,802 INFO L470 AbstractCegarLoop]: Abstraction has 3529 states and 4752 transitions. [2021-11-17 00:04:23,802 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.5) internal successors, (130), 4 states have internal predecessors, (130), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-11-17 00:04:23,802 INFO L276 IsEmpty]: Start isEmpty. Operand 3529 states and 4752 transitions. [2021-11-17 00:04:23,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2021-11-17 00:04:23,804 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 00:04:23,804 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 00:04:23,837 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-17 00:04:24,023 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-17 00:04:24,024 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 00:04:24,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 00:04:24,024 INFO L85 PathProgramCache]: Analyzing trace with hash 362521239, now seen corresponding path program 1 times [2021-11-17 00:04:24,024 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 00:04:24,024 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [431392805] [2021-11-17 00:04:24,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 00:04:24,025 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 00:04:24,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:04:24,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-11-17 00:04:24,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:04:24,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:04:24,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:04:24,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:04:24,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:04:24,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-11-17 00:04:24,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:04:24,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-11-17 00:04:24,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:04:24,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-11-17 00:04:24,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:04:24,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-11-17 00:04:24,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:04:24,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-11-17 00:04:24,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:04:24,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-11-17 00:04:24,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:04:24,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-11-17 00:04:24,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:04:24,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-11-17 00:04:24,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:04:24,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-11-17 00:04:24,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:04:24,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:04:24,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:04:24,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-11-17 00:04:24,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:04:24,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:04:24,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:04:24,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-11-17 00:04:24,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:04:24,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-11-17 00:04:24,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:04:24,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:04:24,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:04:24,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-11-17 00:04:24,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:04:24,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2021-11-17 00:04:24,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:04:24,254 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2021-11-17 00:04:24,254 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 00:04:24,255 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [431392805] [2021-11-17 00:04:24,255 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [431392805] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-17 00:04:24,255 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2055380570] [2021-11-17 00:04:24,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 00:04:24,255 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-17 00:04:24,255 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-17 00:04:24,256 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) [2021-11-17 00:04:24,257 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-17 00:04:24,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:04:24,696 INFO L263 TraceCheckSpWp]: Trace formula consists of 2020 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-17 00:04:24,700 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-17 00:04:24,903 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-11-17 00:04:24,903 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-17 00:04:24,903 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2055380570] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 00:04:24,903 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-17 00:04:24,904 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2021-11-17 00:04:24,904 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140036747] [2021-11-17 00:04:24,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 00:04:24,904 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-17 00:04:24,904 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 00:04:24,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-17 00:04:24,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-17 00:04:24,905 INFO L87 Difference]: Start difference. First operand 3529 states and 4752 transitions. Second operand has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2021-11-17 00:04:24,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 00:04:24,982 INFO L93 Difference]: Finished difference Result 7063 states and 9529 transitions. [2021-11-17 00:04:24,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-17 00:04:24,982 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 176 [2021-11-17 00:04:24,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 00:04:24,991 INFO L225 Difference]: With dead ends: 7063 [2021-11-17 00:04:24,991 INFO L226 Difference]: Without dead ends: 3537 [2021-11-17 00:04:24,997 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 214 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-17 00:04:24,998 INFO L933 BasicCegarLoop]: 1192 mSDtfsCounter, 1 mSDsluCounter, 1189 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 2381 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-17 00:04:24,998 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 2381 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-17 00:04:25,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3537 states. [2021-11-17 00:04:25,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3537 to 3533. [2021-11-17 00:04:25,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3533 states, 2607 states have (on average 1.2474108170310703) internal successors, (3252), 2662 states have internal predecessors, (3252), 734 states have call successors, (734), 194 states have call predecessors, (734), 191 states have return successors, (770), 696 states have call predecessors, (770), 722 states have call successors, (770) [2021-11-17 00:04:25,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3533 states to 3533 states and 4756 transitions. [2021-11-17 00:04:25,092 INFO L78 Accepts]: Start accepts. Automaton has 3533 states and 4756 transitions. Word has length 176 [2021-11-17 00:04:25,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 00:04:25,092 INFO L470 AbstractCegarLoop]: Abstraction has 3533 states and 4756 transitions. [2021-11-17 00:04:25,092 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2021-11-17 00:04:25,093 INFO L276 IsEmpty]: Start isEmpty. Operand 3533 states and 4756 transitions. [2021-11-17 00:04:25,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2021-11-17 00:04:25,094 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 00:04:25,094 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 00:04:25,114 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-17 00:04:25,309 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-17 00:04:25,309 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 00:04:25,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 00:04:25,309 INFO L85 PathProgramCache]: Analyzing trace with hash 2077072147, now seen corresponding path program 1 times [2021-11-17 00:04:25,310 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 00:04:25,310 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [174737418] [2021-11-17 00:04:25,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 00:04:25,310 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 00:04:25,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:04:25,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-11-17 00:04:25,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:04:25,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:04:25,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:04:25,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:04:25,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:04:25,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-11-17 00:04:25,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:04:25,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-11-17 00:04:25,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:04:25,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-11-17 00:04:25,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:04:25,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-11-17 00:04:25,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:04:25,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-11-17 00:04:25,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:04:25,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-11-17 00:04:25,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:04:25,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-11-17 00:04:25,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:04:25,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-11-17 00:04:25,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:04:25,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-11-17 00:04:25,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:04:25,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:04:25,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:04:25,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-11-17 00:04:25,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:04:25,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:04:25,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:04:25,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-11-17 00:04:25,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:04:25,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-11-17 00:04:25,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:04:25,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:04:25,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:04:25,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2021-11-17 00:04:25,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:04:25,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2021-11-17 00:04:25,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:04:25,529 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2021-11-17 00:04:25,529 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 00:04:25,529 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [174737418] [2021-11-17 00:04:25,530 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [174737418] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-17 00:04:25,530 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [429251612] [2021-11-17 00:04:25,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 00:04:25,530 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-17 00:04:25,530 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-17 00:04:25,531 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-17 00:04:25,554 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-17 00:04:25,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:04:25,996 INFO L263 TraceCheckSpWp]: Trace formula consists of 2030 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-17 00:04:26,000 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-17 00:04:26,198 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 14 proven. 1 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2021-11-17 00:04:26,198 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-17 00:04:26,439 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2021-11-17 00:04:26,439 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [429251612] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-17 00:04:26,440 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-17 00:04:26,440 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4, 4] total 9 [2021-11-17 00:04:26,440 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807352222] [2021-11-17 00:04:26,440 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-17 00:04:26,441 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-17 00:04:26,441 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 00:04:26,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-17 00:04:26,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2021-11-17 00:04:26,442 INFO L87 Difference]: Start difference. First operand 3533 states and 4756 transitions. Second operand has 9 states, 9 states have (on average 16.666666666666668) internal successors, (150), 7 states have internal predecessors, (150), 5 states have call successors, (35), 4 states have call predecessors, (35), 2 states have return successors, (26), 5 states have call predecessors, (26), 5 states have call successors, (26) [2021-11-17 00:04:31,010 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:04:33,023 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:04:36,138 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:04:38,157 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:04:39,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 00:04:39,369 INFO L93 Difference]: Finished difference Result 11006 states and 15756 transitions. [2021-11-17 00:04:39,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-17 00:04:39,370 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 16.666666666666668) internal successors, (150), 7 states have internal predecessors, (150), 5 states have call successors, (35), 4 states have call predecessors, (35), 2 states have return successors, (26), 5 states have call predecessors, (26), 5 states have call successors, (26) Word has length 178 [2021-11-17 00:04:39,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 00:04:39,392 INFO L225 Difference]: With dead ends: 11006 [2021-11-17 00:04:39,393 INFO L226 Difference]: Without dead ends: 7476 [2021-11-17 00:04:39,400 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 400 GetRequests, 392 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-11-17 00:04:39,400 INFO L933 BasicCegarLoop]: 1600 mSDtfsCounter, 1764 mSDsluCounter, 4891 mSDsCounter, 0 mSdLazyCounter, 2212 mSolverCounterSat, 648 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2079 SdHoareTripleChecker+Valid, 6491 SdHoareTripleChecker+Invalid, 2864 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 648 IncrementalHoareTripleChecker+Valid, 2212 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.6s IncrementalHoareTripleChecker+Time [2021-11-17 00:04:39,401 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2079 Valid, 6491 Invalid, 2864 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [648 Valid, 2212 Invalid, 4 Unknown, 0 Unchecked, 12.6s Time] [2021-11-17 00:04:39,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7476 states. [2021-11-17 00:04:39,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7476 to 3581. [2021-11-17 00:04:39,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3581 states, 2643 states have (on average 1.2485811577752555) internal successors, (3300), 2698 states have internal predecessors, (3300), 746 states have call successors, (746), 194 states have call predecessors, (746), 191 states have return successors, (782), 708 states have call predecessors, (782), 734 states have call successors, (782) [2021-11-17 00:04:39,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3581 states to 3581 states and 4828 transitions. [2021-11-17 00:04:39,550 INFO L78 Accepts]: Start accepts. Automaton has 3581 states and 4828 transitions. Word has length 178 [2021-11-17 00:04:39,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 00:04:39,550 INFO L470 AbstractCegarLoop]: Abstraction has 3581 states and 4828 transitions. [2021-11-17 00:04:39,550 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 16.666666666666668) internal successors, (150), 7 states have internal predecessors, (150), 5 states have call successors, (35), 4 states have call predecessors, (35), 2 states have return successors, (26), 5 states have call predecessors, (26), 5 states have call successors, (26) [2021-11-17 00:04:39,550 INFO L276 IsEmpty]: Start isEmpty. Operand 3581 states and 4828 transitions. [2021-11-17 00:04:39,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2021-11-17 00:04:39,552 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 00:04:39,552 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 00:04:39,574 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-17 00:04:39,774 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-11-17 00:04:39,775 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 00:04:39,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 00:04:39,775 INFO L85 PathProgramCache]: Analyzing trace with hash 1462683652, now seen corresponding path program 2 times [2021-11-17 00:04:39,775 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 00:04:39,775 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433182239] [2021-11-17 00:04:39,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 00:04:39,776 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 00:04:39,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:04:39,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-11-17 00:04:39,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:04:39,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:04:39,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:04:39,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:04:39,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:04:39,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-11-17 00:04:39,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:04:39,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-11-17 00:04:39,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:04:39,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-11-17 00:04:39,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:04:39,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-11-17 00:04:39,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:04:39,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-11-17 00:04:39,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:04:39,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-11-17 00:04:39,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:04:39,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-11-17 00:04:39,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:04:39,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-11-17 00:04:39,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:04:39,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-11-17 00:04:39,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:04:39,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:04:39,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:04:39,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-11-17 00:04:39,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:04:39,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:04:39,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:04:39,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-11-17 00:04:39,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:04:39,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:04:39,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:04:40,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-11-17 00:04:40,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:04:40,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:04:40,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:04:40,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-11-17 00:04:40,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:04:40,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:04:40,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:04:40,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2021-11-17 00:04:40,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:04:40,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2021-11-17 00:04:40,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:04:40,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:04:40,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:04:40,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2021-11-17 00:04:40,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:04:40,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2021-11-17 00:04:40,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:04:40,073 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 157 trivial. 0 not checked. [2021-11-17 00:04:40,073 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 00:04:40,073 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [433182239] [2021-11-17 00:04:40,073 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [433182239] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-17 00:04:40,074 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [435571961] [2021-11-17 00:04:40,074 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-17 00:04:40,074 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-17 00:04:40,074 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-17 00:04:40,075 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-17 00:04:40,079 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-17 00:04:40,428 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-17 00:04:40,428 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-17 00:04:40,432 INFO L263 TraceCheckSpWp]: Trace formula consists of 1209 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-17 00:04:40,436 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-17 00:04:40,759 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 159 trivial. 0 not checked. [2021-11-17 00:04:40,760 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-17 00:04:40,760 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [435571961] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 00:04:40,760 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-17 00:04:40,760 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 9 [2021-11-17 00:04:40,760 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755711628] [2021-11-17 00:04:40,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 00:04:40,761 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-17 00:04:40,761 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 00:04:40,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-17 00:04:40,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-11-17 00:04:40,761 INFO L87 Difference]: Start difference. First operand 3581 states and 4828 transitions. Second operand has 5 states, 5 states have (on average 23.0) internal successors, (115), 5 states have internal predecessors, (115), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2021-11-17 00:04:40,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 00:04:40,878 INFO L93 Difference]: Finished difference Result 3603 states and 4865 transitions. [2021-11-17 00:04:40,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-17 00:04:40,879 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 23.0) internal successors, (115), 5 states have internal predecessors, (115), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 217 [2021-11-17 00:04:40,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 00:04:40,886 INFO L225 Difference]: With dead ends: 3603 [2021-11-17 00:04:40,886 INFO L226 Difference]: Without dead ends: 3543 [2021-11-17 00:04:40,887 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 275 GetRequests, 266 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2021-11-17 00:04:40,888 INFO L933 BasicCegarLoop]: 1204 mSDtfsCounter, 12 mSDsluCounter, 3586 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 4790 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-17 00:04:40,888 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 4790 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-17 00:04:40,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3543 states. [2021-11-17 00:04:40,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3543 to 3539. [2021-11-17 00:04:40,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3539 states, 2613 states have (on average 1.2460773057787984) internal successors, (3256), 2664 states have internal predecessors, (3256), 734 states have call successors, (734), 193 states have call predecessors, (734), 191 states have return successors, (774), 701 states have call predecessors, (774), 726 states have call successors, (774) [2021-11-17 00:04:40,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3539 states to 3539 states and 4764 transitions. [2021-11-17 00:04:40,981 INFO L78 Accepts]: Start accepts. Automaton has 3539 states and 4764 transitions. Word has length 217 [2021-11-17 00:04:40,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 00:04:40,984 INFO L470 AbstractCegarLoop]: Abstraction has 3539 states and 4764 transitions. [2021-11-17 00:04:40,984 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.0) internal successors, (115), 5 states have internal predecessors, (115), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2021-11-17 00:04:40,984 INFO L276 IsEmpty]: Start isEmpty. Operand 3539 states and 4764 transitions. [2021-11-17 00:04:40,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2021-11-17 00:04:40,988 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 00:04:40,988 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 3, 3, 3, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 00:04:41,010 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-17 00:04:41,210 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-11-17 00:04:41,211 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 00:04:41,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 00:04:41,211 INFO L85 PathProgramCache]: Analyzing trace with hash 1027306784, now seen corresponding path program 1 times [2021-11-17 00:04:41,212 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 00:04:41,212 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1131145667] [2021-11-17 00:04:41,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 00:04:41,212 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 00:04:41,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:04:41,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-11-17 00:04:41,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:04:41,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:04:41,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:04:41,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:04:41,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:04:41,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-11-17 00:04:41,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:04:41,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-11-17 00:04:41,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:04:41,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-11-17 00:04:41,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:04:41,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-11-17 00:04:41,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:04:41,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-11-17 00:04:41,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:04:41,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-11-17 00:04:41,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:04:41,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-11-17 00:04:41,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:04:41,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-11-17 00:04:41,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:04:41,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-11-17 00:04:41,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:04:41,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:04:41,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:04:41,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-11-17 00:04:41,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:04:41,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-11-17 00:04:41,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:04:41,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-11-17 00:04:41,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:04:41,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-11-17 00:04:41,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:04:41,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-11-17 00:04:41,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:04:41,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-11-17 00:04:41,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:04:41,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-11-17 00:04:41,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:04:41,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:04:41,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:04:41,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-11-17 00:04:41,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:04:41,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-11-17 00:04:41,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:04:41,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-11-17 00:04:41,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:04:41,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2021-11-17 00:04:41,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:04:41,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 00:04:41,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:04:41,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:04:41,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:04:41,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2021-11-17 00:04:41,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:04:41,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2021-11-17 00:04:41,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:04:41,547 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2021-11-17 00:04:41,547 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 00:04:41,547 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1131145667] [2021-11-17 00:04:41,547 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1131145667] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-17 00:04:41,547 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [87863694] [2021-11-17 00:04:41,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 00:04:41,548 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-17 00:04:41,548 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-17 00:04:41,548 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-17 00:04:41,566 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-17 00:04:42,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:04:42,037 INFO L263 TraceCheckSpWp]: Trace formula consists of 2345 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-17 00:04:42,042 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-17 00:04:42,402 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 33 proven. 1 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2021-11-17 00:04:42,402 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-17 00:04:42,782 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2021-11-17 00:04:42,783 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [87863694] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-17 00:04:42,783 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-17 00:04:42,783 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 4, 4] total 11 [2021-11-17 00:04:42,783 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473895505] [2021-11-17 00:04:42,783 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-17 00:04:42,783 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-17 00:04:42,784 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 00:04:42,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-17 00:04:42,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2021-11-17 00:04:42,784 INFO L87 Difference]: Start difference. First operand 3539 states and 4764 transitions. Second operand has 11 states, 11 states have (on average 20.454545454545453) internal successors, (225), 7 states have internal predecessors, (225), 5 states have call successors, (52), 6 states have call predecessors, (52), 2 states have return successors, (41), 5 states have call predecessors, (41), 5 states have call successors, (41) [2021-11-17 00:04:47,249 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:04:49,256 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:04:50,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 00:04:50,740 INFO L93 Difference]: Finished difference Result 7430 states and 10232 transitions. [2021-11-17 00:04:50,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-17 00:04:50,741 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 20.454545454545453) internal successors, (225), 7 states have internal predecessors, (225), 5 states have call successors, (52), 6 states have call predecessors, (52), 2 states have return successors, (41), 5 states have call predecessors, (41), 5 states have call successors, (41) Word has length 260 [2021-11-17 00:04:50,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 00:04:50,753 INFO L225 Difference]: With dead ends: 7430 [2021-11-17 00:04:50,753 INFO L226 Difference]: Without dead ends: 3894 [2021-11-17 00:04:50,760 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 591 GetRequests, 574 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=92, Invalid=250, Unknown=0, NotChecked=0, Total=342 [2021-11-17 00:04:50,761 INFO L933 BasicCegarLoop]: 1119 mSDtfsCounter, 961 mSDsluCounter, 2850 mSDsCounter, 0 mSdLazyCounter, 2104 mSolverCounterSat, 804 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1012 SdHoareTripleChecker+Valid, 3969 SdHoareTripleChecker+Invalid, 2910 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 804 IncrementalHoareTripleChecker+Valid, 2104 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.7s IncrementalHoareTripleChecker+Time [2021-11-17 00:04:50,761 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1012 Valid, 3969 Invalid, 2910 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [804 Valid, 2104 Invalid, 2 Unknown, 0 Unchecked, 7.7s Time] [2021-11-17 00:04:50,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3894 states. [2021-11-17 00:04:50,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3894 to 3587. [2021-11-17 00:04:50,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3587 states, 2649 states have (on average 1.2427331068327672) internal successors, (3292), 2700 states have internal predecessors, (3292), 746 states have call successors, (746), 193 states have call predecessors, (746), 191 states have return successors, (786), 713 states have call predecessors, (786), 738 states have call successors, (786) [2021-11-17 00:04:50,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3587 states to 3587 states and 4824 transitions. [2021-11-17 00:04:50,882 INFO L78 Accepts]: Start accepts. Automaton has 3587 states and 4824 transitions. Word has length 260 [2021-11-17 00:04:50,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 00:04:50,882 INFO L470 AbstractCegarLoop]: Abstraction has 3587 states and 4824 transitions. [2021-11-17 00:04:50,883 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 20.454545454545453) internal successors, (225), 7 states have internal predecessors, (225), 5 states have call successors, (52), 6 states have call predecessors, (52), 2 states have return successors, (41), 5 states have call predecessors, (41), 5 states have call successors, (41) [2021-11-17 00:04:50,883 INFO L276 IsEmpty]: Start isEmpty. Operand 3587 states and 4824 transitions. [2021-11-17 00:04:50,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 282 [2021-11-17 00:04:50,888 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 00:04:50,888 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 00:04:50,909 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2021-11-17 00:04:51,103 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-17 00:04:51,104 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 00:04:51,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 00:04:51,104 INFO L85 PathProgramCache]: Analyzing trace with hash 372810446, now seen corresponding path program 2 times [2021-11-17 00:04:51,104 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 00:04:51,104 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1911536686] [2021-11-17 00:04:51,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 00:04:51,104 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 00:04:51,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:04:51,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-11-17 00:04:51,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:04:51,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:04:51,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:04:51,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:04:51,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:04:51,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-11-17 00:04:51,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:04:51,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-11-17 00:04:51,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:04:51,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-11-17 00:04:51,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:04:51,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-11-17 00:04:51,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:04:51,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-11-17 00:04:51,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:04:51,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-11-17 00:04:51,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:04:51,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-11-17 00:04:51,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:04:51,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-11-17 00:04:51,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:04:51,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-11-17 00:04:51,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:04:51,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:04:51,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:04:51,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-11-17 00:04:51,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:04:51,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-11-17 00:04:51,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:04:51,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-11-17 00:04:51,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:04:51,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-11-17 00:04:51,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:04:51,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-17 00:04:51,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:04:51,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-11-17 00:04:51,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:04:51,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-11-17 00:04:51,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:04:51,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-11-17 00:04:51,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:04:51,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-11-17 00:04:51,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:04:51,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-11-17 00:04:51,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:04:51,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:04:51,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:04:51,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-11-17 00:04:51,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:04:51,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-11-17 00:04:51,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:04:51,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-11-17 00:04:51,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:04:51,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2021-11-17 00:04:51,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:04:51,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 00:04:51,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:04:51,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:04:51,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:04:51,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2021-11-17 00:04:51,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:04:51,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264 [2021-11-17 00:04:51,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:04:51,412 INFO L134 CoverageAnalysis]: Checked inductivity of 143 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 142 trivial. 0 not checked. [2021-11-17 00:04:51,412 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 00:04:51,412 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1911536686] [2021-11-17 00:04:51,412 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1911536686] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-17 00:04:51,412 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1159981317] [2021-11-17 00:04:51,412 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-17 00:04:51,413 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-17 00:04:51,413 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-17 00:04:51,414 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-17 00:04:51,415 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-17 00:04:51,818 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-17 00:04:51,819 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-17 00:04:51,823 INFO L263 TraceCheckSpWp]: Trace formula consists of 1142 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-17 00:04:51,827 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-17 00:04:52,173 INFO L134 CoverageAnalysis]: Checked inductivity of 143 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 143 trivial. 0 not checked. [2021-11-17 00:04:52,173 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-17 00:04:52,174 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1159981317] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 00:04:52,174 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-17 00:04:52,174 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2021-11-17 00:04:52,174 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550722899] [2021-11-17 00:04:52,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 00:04:52,175 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-17 00:04:52,175 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 00:04:52,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-17 00:04:52,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-11-17 00:04:52,175 INFO L87 Difference]: Start difference. First operand 3587 states and 4824 transitions. Second operand has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 3 states have call successors, (30), 3 states have call predecessors, (30), 2 states have return successors, (27), 2 states have call predecessors, (27), 1 states have call successors, (27) [2021-11-17 00:04:52,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 00:04:52,480 INFO L93 Difference]: Finished difference Result 7176 states and 9649 transitions. [2021-11-17 00:04:52,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-17 00:04:52,480 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 3 states have call successors, (30), 3 states have call predecessors, (30), 2 states have return successors, (27), 2 states have call predecessors, (27), 1 states have call successors, (27) Word has length 281 [2021-11-17 00:04:52,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 00:04:52,491 INFO L225 Difference]: With dead ends: 7176 [2021-11-17 00:04:52,492 INFO L226 Difference]: Without dead ends: 3592 [2021-11-17 00:04:52,499 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 350 GetRequests, 343 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-11-17 00:04:52,500 INFO L933 BasicCegarLoop]: 2286 mSDtfsCounter, 1155 mSDsluCounter, 1180 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1155 SdHoareTripleChecker+Valid, 3466 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-17 00:04:52,500 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1155 Valid, 3466 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-17 00:04:52,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3592 states. [2021-11-17 00:04:52,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3592 to 3575. [2021-11-17 00:04:52,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3575 states, 2639 states have (on average 1.2417582417582418) internal successors, (3277), 2691 states have internal predecessors, (3277), 744 states have call successors, (744), 192 states have call predecessors, (744), 191 states have return successors, (762), 711 states have call predecessors, (762), 726 states have call successors, (762) [2021-11-17 00:04:52,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3575 states to 3575 states and 4783 transitions. [2021-11-17 00:04:52,609 INFO L78 Accepts]: Start accepts. Automaton has 3575 states and 4783 transitions. Word has length 281 [2021-11-17 00:04:52,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 00:04:52,609 INFO L470 AbstractCegarLoop]: Abstraction has 3575 states and 4783 transitions. [2021-11-17 00:04:52,610 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 3 states have call successors, (30), 3 states have call predecessors, (30), 2 states have return successors, (27), 2 states have call predecessors, (27), 1 states have call successors, (27) [2021-11-17 00:04:52,610 INFO L276 IsEmpty]: Start isEmpty. Operand 3575 states and 4783 transitions. [2021-11-17 00:04:52,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 282 [2021-11-17 00:04:52,614 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 00:04:52,614 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 00:04:52,634 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-17 00:04:52,834 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-11-17 00:04:52,834 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 00:04:52,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 00:04:52,834 INFO L85 PathProgramCache]: Analyzing trace with hash 79407439, now seen corresponding path program 1 times [2021-11-17 00:04:52,835 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 00:04:52,835 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1106932184] [2021-11-17 00:04:52,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 00:04:52,835 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 00:04:52,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:04:52,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-11-17 00:04:52,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:04:52,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:04:52,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:04:52,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:04:52,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:04:52,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-11-17 00:04:52,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:04:52,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-11-17 00:04:52,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:04:52,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-11-17 00:04:52,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:04:52,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-11-17 00:04:52,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:04:52,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-11-17 00:04:52,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:04:52,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-11-17 00:04:52,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:04:52,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-11-17 00:04:52,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:04:52,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-11-17 00:04:52,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:04:52,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-11-17 00:04:52,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:04:52,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:04:52,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:04:52,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-11-17 00:04:52,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:04:52,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-11-17 00:04:52,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:04:52,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-11-17 00:04:52,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:04:53,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-11-17 00:04:53,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:04:53,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-17 00:04:53,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:04:53,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-11-17 00:04:53,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:04:53,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-11-17 00:04:53,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:04:53,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-11-17 00:04:53,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:04:53,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-11-17 00:04:53,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:04:53,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-11-17 00:04:53,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:04:53,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:04:53,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:04:53,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-11-17 00:04:53,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:04:53,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-11-17 00:04:53,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:04:53,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-11-17 00:04:53,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:04:53,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2021-11-17 00:04:53,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:04:53,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 00:04:53,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:04:53,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:04:53,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:04:53,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2021-11-17 00:04:53,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:04:53,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264 [2021-11-17 00:04:53,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:04:53,165 INFO L134 CoverageAnalysis]: Checked inductivity of 143 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 142 trivial. 0 not checked. [2021-11-17 00:04:53,165 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 00:04:53,166 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1106932184] [2021-11-17 00:04:53,166 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1106932184] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-17 00:04:53,166 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [146796884] [2021-11-17 00:04:53,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 00:04:53,167 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-17 00:04:53,167 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-17 00:04:53,182 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-17 00:04:53,183 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-17 00:04:53,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:04:53,689 INFO L263 TraceCheckSpWp]: Trace formula consists of 2401 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-17 00:04:53,693 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-17 00:04:54,078 INFO L134 CoverageAnalysis]: Checked inductivity of 143 backedges. 33 proven. 1 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2021-11-17 00:04:54,079 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-17 00:04:54,503 INFO L134 CoverageAnalysis]: Checked inductivity of 143 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 142 trivial. 0 not checked. [2021-11-17 00:04:54,504 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [146796884] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-17 00:04:54,504 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-17 00:04:54,504 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 4, 4] total 10 [2021-11-17 00:04:54,530 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120427757] [2021-11-17 00:04:54,530 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-17 00:04:54,532 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-17 00:04:54,532 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 00:04:54,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-17 00:04:54,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2021-11-17 00:04:54,533 INFO L87 Difference]: Start difference. First operand 3575 states and 4783 transitions. Second operand has 10 states, 10 states have (on average 19.7) internal successors, (197), 6 states have internal predecessors, (197), 4 states have call successors, (49), 6 states have call predecessors, (49), 2 states have return successors, (38), 4 states have call predecessors, (38), 4 states have call successors, (38) [2021-11-17 00:04:59,640 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:05:01,654 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:05:03,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 00:05:03,087 INFO L93 Difference]: Finished difference Result 7502 states and 10270 transitions. [2021-11-17 00:05:03,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-17 00:05:03,087 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 19.7) internal successors, (197), 6 states have internal predecessors, (197), 4 states have call successors, (49), 6 states have call predecessors, (49), 2 states have return successors, (38), 4 states have call predecessors, (38), 4 states have call successors, (38) Word has length 281 [2021-11-17 00:05:03,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 00:05:03,112 INFO L225 Difference]: With dead ends: 7502 [2021-11-17 00:05:03,116 INFO L226 Difference]: Without dead ends: 3930 [2021-11-17 00:05:03,124 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 641 GetRequests, 625 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=105, Invalid=201, Unknown=0, NotChecked=0, Total=306 [2021-11-17 00:05:03,124 INFO L933 BasicCegarLoop]: 1120 mSDtfsCounter, 960 mSDsluCounter, 2850 mSDsCounter, 0 mSdLazyCounter, 2023 mSolverCounterSat, 810 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1012 SdHoareTripleChecker+Valid, 3970 SdHoareTripleChecker+Invalid, 2835 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 810 IncrementalHoareTripleChecker+Valid, 2023 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.2s IncrementalHoareTripleChecker+Time [2021-11-17 00:05:03,124 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1012 Valid, 3970 Invalid, 2835 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [810 Valid, 2023 Invalid, 2 Unknown, 0 Unchecked, 8.2s Time] [2021-11-17 00:05:03,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3930 states. [2021-11-17 00:05:03,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3930 to 3623. [2021-11-17 00:05:03,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3623 states, 2675 states have (on average 1.2385046728971962) internal successors, (3313), 2727 states have internal predecessors, (3313), 756 states have call successors, (756), 192 states have call predecessors, (756), 191 states have return successors, (774), 723 states have call predecessors, (774), 738 states have call successors, (774) [2021-11-17 00:05:03,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3623 states to 3623 states and 4843 transitions. [2021-11-17 00:05:03,238 INFO L78 Accepts]: Start accepts. Automaton has 3623 states and 4843 transitions. Word has length 281 [2021-11-17 00:05:03,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 00:05:03,238 INFO L470 AbstractCegarLoop]: Abstraction has 3623 states and 4843 transitions. [2021-11-17 00:05:03,238 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 19.7) internal successors, (197), 6 states have internal predecessors, (197), 4 states have call successors, (49), 6 states have call predecessors, (49), 2 states have return successors, (38), 4 states have call predecessors, (38), 4 states have call successors, (38) [2021-11-17 00:05:03,238 INFO L276 IsEmpty]: Start isEmpty. Operand 3623 states and 4843 transitions. [2021-11-17 00:05:03,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 280 [2021-11-17 00:05:03,243 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 00:05:03,244 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 00:05:03,267 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2021-11-17 00:05:03,459 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-17 00:05:03,459 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 00:05:03,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 00:05:03,460 INFO L85 PathProgramCache]: Analyzing trace with hash 1268476691, now seen corresponding path program 1 times [2021-11-17 00:05:03,460 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 00:05:03,460 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [888041013] [2021-11-17 00:05:03,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 00:05:03,460 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 00:05:03,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:05:03,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-11-17 00:05:03,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:05:03,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:05:03,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:05:03,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:05:03,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:05:03,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-11-17 00:05:03,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:05:03,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-11-17 00:05:03,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:05:03,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-11-17 00:05:03,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:05:03,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-11-17 00:05:03,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:05:03,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-11-17 00:05:03,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:05:03,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-11-17 00:05:03,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:05:03,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-11-17 00:05:03,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:05:03,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-11-17 00:05:03,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:05:03,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-11-17 00:05:03,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:05:03,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:05:03,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:05:03,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-11-17 00:05:03,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:05:03,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:05:03,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:05:03,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-11-17 00:05:03,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:05:03,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:05:03,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:05:03,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-11-17 00:05:03,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:05:03,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:05:03,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:05:03,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-11-17 00:05:03,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:05:03,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:05:03,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:05:03,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2021-11-17 00:05:03,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:05:03,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2021-11-17 00:05:03,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:05:03,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 00:05:03,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:05:03,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:05:03,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:05:03,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-11-17 00:05:03,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:05:03,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-11-17 00:05:03,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:05:03,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2021-11-17 00:05:03,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:05:03,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2021-11-17 00:05:03,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:05:03,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2021-11-17 00:05:03,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:05:03,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2021-11-17 00:05:03,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:05:03,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2021-11-17 00:05:03,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:05:03,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2021-11-17 00:05:03,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:05:03,769 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 166 trivial. 0 not checked. [2021-11-17 00:05:03,769 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 00:05:03,769 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [888041013] [2021-11-17 00:05:03,769 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [888041013] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-17 00:05:03,769 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [129472] [2021-11-17 00:05:03,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 00:05:03,770 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-17 00:05:03,770 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-17 00:05:03,770 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-17 00:05:03,821 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-17 00:05:04,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:05:04,304 INFO L263 TraceCheckSpWp]: Trace formula consists of 2496 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-17 00:05:04,308 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-17 00:05:04,715 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2021-11-17 00:05:04,716 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-17 00:05:04,716 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [129472] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 00:05:04,716 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-17 00:05:04,716 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2021-11-17 00:05:04,716 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782032308] [2021-11-17 00:05:04,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 00:05:04,716 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-17 00:05:04,717 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 00:05:04,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-17 00:05:04,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2021-11-17 00:05:04,717 INFO L87 Difference]: Start difference. First operand 3623 states and 4843 transitions. Second operand has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 2 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2021-11-17 00:05:04,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 00:05:04,883 INFO L93 Difference]: Finished difference Result 8164 states and 11021 transitions. [2021-11-17 00:05:04,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-17 00:05:04,883 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 2 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) Word has length 279 [2021-11-17 00:05:04,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 00:05:04,893 INFO L225 Difference]: With dead ends: 8164 [2021-11-17 00:05:04,893 INFO L226 Difference]: Without dead ends: 4544 [2021-11-17 00:05:04,900 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 349 GetRequests, 342 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2021-11-17 00:05:04,900 INFO L933 BasicCegarLoop]: 1511 mSDtfsCounter, 219 mSDsluCounter, 1230 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 273 SdHoareTripleChecker+Valid, 2741 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-17 00:05:04,901 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [273 Valid, 2741 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-17 00:05:04,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4544 states. [2021-11-17 00:05:05,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4544 to 3631. [2021-11-17 00:05:05,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3631 states, 2683 states have (on average 1.2377935147223258) internal successors, (3321), 2735 states have internal predecessors, (3321), 756 states have call successors, (756), 192 states have call predecessors, (756), 191 states have return successors, (774), 723 states have call predecessors, (774), 738 states have call successors, (774) [2021-11-17 00:05:05,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3631 states to 3631 states and 4851 transitions. [2021-11-17 00:05:05,020 INFO L78 Accepts]: Start accepts. Automaton has 3631 states and 4851 transitions. Word has length 279 [2021-11-17 00:05:05,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 00:05:05,021 INFO L470 AbstractCegarLoop]: Abstraction has 3631 states and 4851 transitions. [2021-11-17 00:05:05,021 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 2 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2021-11-17 00:05:05,021 INFO L276 IsEmpty]: Start isEmpty. Operand 3631 states and 4851 transitions. [2021-11-17 00:05:05,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 280 [2021-11-17 00:05:05,025 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 00:05:05,025 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 00:05:05,051 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-11-17 00:05:05,251 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-17 00:05:05,252 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 00:05:05,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 00:05:05,252 INFO L85 PathProgramCache]: Analyzing trace with hash -1765573355, now seen corresponding path program 1 times [2021-11-17 00:05:05,252 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 00:05:05,253 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [961236398] [2021-11-17 00:05:05,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 00:05:05,254 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 00:05:05,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:05:05,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-11-17 00:05:05,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:05:05,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:05:05,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:05:05,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:05:05,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:05:05,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-11-17 00:05:05,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:05:05,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-11-17 00:05:05,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:05:05,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-11-17 00:05:05,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:05:05,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-11-17 00:05:05,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:05:05,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-11-17 00:05:05,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:05:05,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-11-17 00:05:05,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:05:05,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-11-17 00:05:05,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:05:05,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-11-17 00:05:05,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:05:05,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-11-17 00:05:05,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:05:05,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:05:05,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:05:05,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-11-17 00:05:05,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:05:05,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:05:05,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:05:05,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-11-17 00:05:05,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:05:05,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:05:05,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:05:05,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-11-17 00:05:05,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:05:05,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:05:05,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:05:05,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-11-17 00:05:05,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:05:05,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:05:05,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:05:05,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2021-11-17 00:05:05,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:05:05,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2021-11-17 00:05:05,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:05:05,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 00:05:05,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:05:05,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:05:05,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:05:05,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-11-17 00:05:05,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:05:05,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-11-17 00:05:05,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:05:05,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2021-11-17 00:05:05,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:05:05,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2021-11-17 00:05:05,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:05:05,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2021-11-17 00:05:05,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:05:05,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2021-11-17 00:05:05,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:05:05,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2021-11-17 00:05:05,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:05:05,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2021-11-17 00:05:05,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:05:05,530 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 166 trivial. 0 not checked. [2021-11-17 00:05:05,530 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 00:05:05,530 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [961236398] [2021-11-17 00:05:05,530 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [961236398] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-17 00:05:05,530 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1137266855] [2021-11-17 00:05:05,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 00:05:05,531 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-17 00:05:05,531 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-17 00:05:05,532 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-17 00:05:05,533 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-11-17 00:05:06,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:05:06,092 INFO L263 TraceCheckSpWp]: Trace formula consists of 2496 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-17 00:05:06,096 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-17 00:05:06,480 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 27 proven. 1 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2021-11-17 00:05:06,480 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-17 00:05:06,873 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 166 trivial. 0 not checked. [2021-11-17 00:05:06,873 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1137266855] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-17 00:05:06,873 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-17 00:05:06,873 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 4, 4] total 10 [2021-11-17 00:05:06,874 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072446071] [2021-11-17 00:05:06,874 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-17 00:05:06,874 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-17 00:05:06,874 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 00:05:06,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-17 00:05:06,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-11-17 00:05:06,875 INFO L87 Difference]: Start difference. First operand 3631 states and 4851 transitions. Second operand has 10 states, 10 states have (on average 20.1) internal successors, (201), 6 states have internal predecessors, (201), 2 states have call successors, (49), 6 states have call predecessors, (49), 2 states have return successors, (37), 2 states have call predecessors, (37), 2 states have call successors, (37) [2021-11-17 00:05:11,390 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:05:13,399 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:05:14,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 00:05:14,323 INFO L93 Difference]: Finished difference Result 7590 states and 10366 transitions. [2021-11-17 00:05:14,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-17 00:05:14,324 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 20.1) internal successors, (201), 6 states have internal predecessors, (201), 2 states have call successors, (49), 6 states have call predecessors, (49), 2 states have return successors, (37), 2 states have call predecessors, (37), 2 states have call successors, (37) Word has length 279 [2021-11-17 00:05:14,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 00:05:14,334 INFO L225 Difference]: With dead ends: 7590 [2021-11-17 00:05:14,334 INFO L226 Difference]: Without dead ends: 3962 [2021-11-17 00:05:14,341 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 632 GetRequests, 619 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2021-11-17 00:05:14,341 INFO L933 BasicCegarLoop]: 1116 mSDtfsCounter, 630 mSDsluCounter, 1834 mSDsCounter, 0 mSdLazyCounter, 1058 mSolverCounterSat, 506 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 674 SdHoareTripleChecker+Valid, 2950 SdHoareTripleChecker+Invalid, 1566 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 506 IncrementalHoareTripleChecker+Valid, 1058 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.3s IncrementalHoareTripleChecker+Time [2021-11-17 00:05:14,342 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [674 Valid, 2950 Invalid, 1566 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [506 Valid, 1058 Invalid, 2 Unknown, 0 Unchecked, 7.3s Time] [2021-11-17 00:05:14,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3962 states. [2021-11-17 00:05:14,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3962 to 3655. [2021-11-17 00:05:14,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3655 states, 2707 states have (on average 1.235685260435907) internal successors, (3345), 2759 states have internal predecessors, (3345), 756 states have call successors, (756), 192 states have call predecessors, (756), 191 states have return successors, (774), 723 states have call predecessors, (774), 738 states have call successors, (774) [2021-11-17 00:05:14,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3655 states to 3655 states and 4875 transitions. [2021-11-17 00:05:14,541 INFO L78 Accepts]: Start accepts. Automaton has 3655 states and 4875 transitions. Word has length 279 [2021-11-17 00:05:14,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 00:05:14,541 INFO L470 AbstractCegarLoop]: Abstraction has 3655 states and 4875 transitions. [2021-11-17 00:05:14,542 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 20.1) internal successors, (201), 6 states have internal predecessors, (201), 2 states have call successors, (49), 6 states have call predecessors, (49), 2 states have return successors, (37), 2 states have call predecessors, (37), 2 states have call successors, (37) [2021-11-17 00:05:14,542 INFO L276 IsEmpty]: Start isEmpty. Operand 3655 states and 4875 transitions. [2021-11-17 00:05:14,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2021-11-17 00:05:14,546 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 00:05:14,546 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 00:05:14,570 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-11-17 00:05:14,768 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2021-11-17 00:05:14,768 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 00:05:14,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 00:05:14,769 INFO L85 PathProgramCache]: Analyzing trace with hash 478688456, now seen corresponding path program 2 times [2021-11-17 00:05:14,769 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 00:05:14,769 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1779843311] [2021-11-17 00:05:14,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 00:05:14,769 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 00:05:14,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:05:14,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-11-17 00:05:14,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:05:14,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:05:14,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:05:14,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:05:14,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:05:14,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-11-17 00:05:14,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:05:14,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-11-17 00:05:14,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:05:14,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-11-17 00:05:14,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:05:14,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-11-17 00:05:14,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:05:14,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-11-17 00:05:14,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:05:14,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-11-17 00:05:14,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:05:14,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-11-17 00:05:14,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:05:14,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-11-17 00:05:14,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:05:15,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-11-17 00:05:15,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:05:15,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:05:15,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:05:15,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-11-17 00:05:15,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:05:15,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-11-17 00:05:15,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:05:15,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-11-17 00:05:15,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:05:15,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-11-17 00:05:15,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:05:15,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-17 00:05:15,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:05:15,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-11-17 00:05:15,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:05:15,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-11-17 00:05:15,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:05:15,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-11-17 00:05:15,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:05:15,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-11-17 00:05:15,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:05:15,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-17 00:05:15,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:05:15,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-11-17 00:05:15,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:05:15,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-11-17 00:05:15,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:05:15,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-11-17 00:05:15,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:05:15,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:05:15,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:05:15,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-11-17 00:05:15,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:05:15,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-11-17 00:05:15,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:05:15,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-11-17 00:05:15,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:05:15,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2021-11-17 00:05:15,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:05:15,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 00:05:15,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:05:15,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:05:15,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:05:15,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 280 [2021-11-17 00:05:15,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:05:15,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 285 [2021-11-17 00:05:15,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:05:15,177 INFO L134 CoverageAnalysis]: Checked inductivity of 188 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 188 trivial. 0 not checked. [2021-11-17 00:05:15,177 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 00:05:15,177 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1779843311] [2021-11-17 00:05:15,177 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1779843311] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 00:05:15,177 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 00:05:15,178 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-17 00:05:15,178 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742479385] [2021-11-17 00:05:15,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 00:05:15,178 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-17 00:05:15,178 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 00:05:15,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-17 00:05:15,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-11-17 00:05:15,179 INFO L87 Difference]: Start difference. First operand 3655 states and 4875 transitions. Second operand has 10 states, 10 states have (on average 16.0) internal successors, (160), 5 states have internal predecessors, (160), 2 states have call successors, (30), 6 states have call predecessors, (30), 2 states have return successors, (27), 2 states have call predecessors, (27), 1 states have call successors, (27) [2021-11-17 00:05:21,142 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:05:23,158 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:05:25,175 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:05:27,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 00:05:27,602 INFO L93 Difference]: Finished difference Result 3973 states and 5502 transitions. [2021-11-17 00:05:27,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-17 00:05:27,602 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 16.0) internal successors, (160), 5 states have internal predecessors, (160), 2 states have call successors, (30), 6 states have call predecessors, (30), 2 states have return successors, (27), 2 states have call predecessors, (27), 1 states have call successors, (27) Word has length 302 [2021-11-17 00:05:27,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 00:05:27,610 INFO L225 Difference]: With dead ends: 3973 [2021-11-17 00:05:27,610 INFO L226 Difference]: Without dead ends: 3950 [2021-11-17 00:05:27,611 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=96, Invalid=246, Unknown=0, NotChecked=0, Total=342 [2021-11-17 00:05:27,611 INFO L933 BasicCegarLoop]: 1108 mSDtfsCounter, 716 mSDsluCounter, 4734 mSDsCounter, 0 mSdLazyCounter, 3343 mSolverCounterSat, 542 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 768 SdHoareTripleChecker+Valid, 5842 SdHoareTripleChecker+Invalid, 3888 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 542 IncrementalHoareTripleChecker+Valid, 3343 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.1s IncrementalHoareTripleChecker+Time [2021-11-17 00:05:27,612 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [768 Valid, 5842 Invalid, 3888 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [542 Valid, 3343 Invalid, 3 Unknown, 0 Unchecked, 12.1s Time] [2021-11-17 00:05:27,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3950 states. [2021-11-17 00:05:27,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3950 to 3643. [2021-11-17 00:05:27,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3643 states, 2698 states have (on average 1.234247590808006) internal successors, (3330), 2749 states have internal predecessors, (3330), 753 states have call successors, (753), 192 states have call predecessors, (753), 191 states have return successors, (772), 721 states have call predecessors, (772), 736 states have call successors, (772) [2021-11-17 00:05:27,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3643 states to 3643 states and 4855 transitions. [2021-11-17 00:05:27,726 INFO L78 Accepts]: Start accepts. Automaton has 3643 states and 4855 transitions. Word has length 302 [2021-11-17 00:05:27,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 00:05:27,726 INFO L470 AbstractCegarLoop]: Abstraction has 3643 states and 4855 transitions. [2021-11-17 00:05:27,730 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 16.0) internal successors, (160), 5 states have internal predecessors, (160), 2 states have call successors, (30), 6 states have call predecessors, (30), 2 states have return successors, (27), 2 states have call predecessors, (27), 1 states have call successors, (27) [2021-11-17 00:05:27,730 INFO L276 IsEmpty]: Start isEmpty. Operand 3643 states and 4855 transitions. [2021-11-17 00:05:27,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 286 [2021-11-17 00:05:27,734 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 00:05:27,734 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 00:05:27,734 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-11-17 00:05:27,734 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 00:05:27,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 00:05:27,734 INFO L85 PathProgramCache]: Analyzing trace with hash -1768779575, now seen corresponding path program 2 times [2021-11-17 00:05:27,735 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 00:05:27,735 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1009868295] [2021-11-17 00:05:27,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 00:05:27,735 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 00:05:27,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:05:27,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-11-17 00:05:27,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:05:27,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:05:27,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:05:27,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:05:27,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:05:27,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-11-17 00:05:27,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:05:27,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-11-17 00:05:27,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:05:27,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-11-17 00:05:27,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:05:27,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-11-17 00:05:27,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:05:27,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-11-17 00:05:27,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:05:27,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-11-17 00:05:27,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:05:27,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-11-17 00:05:27,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:05:27,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-11-17 00:05:27,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:05:27,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-11-17 00:05:27,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:05:27,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:05:27,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:05:27,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-11-17 00:05:27,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:05:27,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:05:27,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:05:27,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-11-17 00:05:27,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:05:27,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:05:27,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:05:27,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-11-17 00:05:27,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:05:27,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:05:27,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:05:27,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-11-17 00:05:27,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:05:27,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:05:27,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:05:27,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2021-11-17 00:05:27,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:05:27,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2021-11-17 00:05:27,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:05:27,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 00:05:27,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:05:27,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:05:27,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:05:27,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-11-17 00:05:27,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:05:27,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-11-17 00:05:27,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:05:27,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2021-11-17 00:05:27,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:05:27,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2021-11-17 00:05:27,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:05:27,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2021-11-17 00:05:27,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:05:28,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2021-11-17 00:05:28,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:05:28,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2021-11-17 00:05:28,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:05:28,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2021-11-17 00:05:28,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:05:28,013 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2021-11-17 00:05:28,013 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 00:05:28,013 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1009868295] [2021-11-17 00:05:28,013 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1009868295] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-17 00:05:28,014 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1976040069] [2021-11-17 00:05:28,014 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-17 00:05:28,014 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-17 00:05:28,014 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-17 00:05:28,015 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-17 00:05:28,058 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-11-17 00:05:28,417 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-17 00:05:28,418 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-17 00:05:28,422 INFO L263 TraceCheckSpWp]: Trace formula consists of 1383 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-17 00:05:28,426 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-17 00:05:28,847 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 183 trivial. 0 not checked. [2021-11-17 00:05:28,847 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-17 00:05:28,847 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1976040069] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 00:05:28,847 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-17 00:05:28,847 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 10 [2021-11-17 00:05:28,848 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089422260] [2021-11-17 00:05:28,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 00:05:28,848 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-17 00:05:28,848 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 00:05:28,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-17 00:05:28,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-11-17 00:05:28,849 INFO L87 Difference]: Start difference. First operand 3643 states and 4855 transitions. Second operand has 4 states, 4 states have (on average 39.75) internal successors, (159), 4 states have internal predecessors, (159), 2 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2021-11-17 00:05:29,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 00:05:29,053 INFO L93 Difference]: Finished difference Result 4208 states and 5692 transitions. [2021-11-17 00:05:29,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-17 00:05:29,054 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 39.75) internal successors, (159), 4 states have internal predecessors, (159), 2 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) Word has length 285 [2021-11-17 00:05:29,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 00:05:29,067 INFO L225 Difference]: With dead ends: 4208 [2021-11-17 00:05:29,067 INFO L226 Difference]: Without dead ends: 4197 [2021-11-17 00:05:29,068 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 357 GetRequests, 348 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2021-11-17 00:05:29,071 INFO L933 BasicCegarLoop]: 1644 mSDtfsCounter, 628 mSDsluCounter, 2507 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 706 SdHoareTripleChecker+Valid, 4151 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-17 00:05:29,071 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [706 Valid, 4151 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-17 00:05:29,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4197 states. [2021-11-17 00:05:29,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4197 to 3643. [2021-11-17 00:05:29,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3643 states, 2698 states have (on average 1.2331356560415123) internal successors, (3327), 2749 states have internal predecessors, (3327), 753 states have call successors, (753), 192 states have call predecessors, (753), 191 states have return successors, (772), 721 states have call predecessors, (772), 736 states have call successors, (772) [2021-11-17 00:05:29,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3643 states to 3643 states and 4852 transitions. [2021-11-17 00:05:29,188 INFO L78 Accepts]: Start accepts. Automaton has 3643 states and 4852 transitions. Word has length 285 [2021-11-17 00:05:29,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 00:05:29,188 INFO L470 AbstractCegarLoop]: Abstraction has 3643 states and 4852 transitions. [2021-11-17 00:05:29,189 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.75) internal successors, (159), 4 states have internal predecessors, (159), 2 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2021-11-17 00:05:29,189 INFO L276 IsEmpty]: Start isEmpty. Operand 3643 states and 4852 transitions. [2021-11-17 00:05:29,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 288 [2021-11-17 00:05:29,192 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 00:05:29,193 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 00:05:29,228 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-11-17 00:05:29,408 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2021-11-17 00:05:29,408 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 00:05:29,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 00:05:29,409 INFO L85 PathProgramCache]: Analyzing trace with hash -451781502, now seen corresponding path program 1 times [2021-11-17 00:05:29,409 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 00:05:29,409 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1676113678] [2021-11-17 00:05:29,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 00:05:29,409 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 00:05:29,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:05:29,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-11-17 00:05:29,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:05:29,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:05:29,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:05:29,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:05:29,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:05:29,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-11-17 00:05:29,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:05:29,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-11-17 00:05:29,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:05:29,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-11-17 00:05:29,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:05:29,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-11-17 00:05:29,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:05:29,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-11-17 00:05:29,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:05:29,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-11-17 00:05:29,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:05:29,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-11-17 00:05:29,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:05:29,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-11-17 00:05:29,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:05:29,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-11-17 00:05:29,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:05:29,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:05:29,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:05:29,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-11-17 00:05:29,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:05:29,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:05:29,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:05:29,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-11-17 00:05:29,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:05:29,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:05:29,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:05:29,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-11-17 00:05:29,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:05:29,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:05:29,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:05:29,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-11-17 00:05:29,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:05:29,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:05:29,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:05:29,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2021-11-17 00:05:29,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:05:29,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2021-11-17 00:05:29,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:05:29,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 00:05:29,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:05:29,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:05:29,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:05:29,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-11-17 00:05:29,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:05:29,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-11-17 00:05:29,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:05:29,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2021-11-17 00:05:29,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:05:29,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2021-11-17 00:05:29,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:05:29,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2021-11-17 00:05:29,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:05:29,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2021-11-17 00:05:29,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:05:29,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2021-11-17 00:05:29,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:05:29,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2021-11-17 00:05:29,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:05:29,717 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2021-11-17 00:05:29,718 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 00:05:29,718 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1676113678] [2021-11-17 00:05:29,718 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1676113678] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-17 00:05:29,718 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [512376710] [2021-11-17 00:05:29,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 00:05:29,718 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-17 00:05:29,718 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-17 00:05:29,720 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-17 00:05:29,721 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-11-17 00:05:30,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:05:30,222 INFO L263 TraceCheckSpWp]: Trace formula consists of 2537 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-17 00:05:30,226 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-17 00:05:30,490 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 28 proven. 1 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2021-11-17 00:05:30,491 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-17 00:05:30,870 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2021-11-17 00:05:30,870 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [512376710] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-17 00:05:30,870 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-17 00:05:30,871 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 4, 4] total 10 [2021-11-17 00:05:30,871 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [650131394] [2021-11-17 00:05:30,871 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-17 00:05:30,871 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-17 00:05:30,872 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 00:05:30,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-17 00:05:30,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-11-17 00:05:30,872 INFO L87 Difference]: Start difference. First operand 3643 states and 4852 transitions. Second operand has 10 states, 10 states have (on average 20.6) internal successors, (206), 6 states have internal predecessors, (206), 2 states have call successors, (49), 6 states have call predecessors, (49), 2 states have return successors, (37), 2 states have call predecessors, (37), 2 states have call successors, (37) [2021-11-17 00:05:36,178 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:05:38,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 00:05:38,116 INFO L93 Difference]: Finished difference Result 7718 states and 10484 transitions. [2021-11-17 00:05:38,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-17 00:05:38,139 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 20.6) internal successors, (206), 6 states have internal predecessors, (206), 2 states have call successors, (49), 6 states have call predecessors, (49), 2 states have return successors, (37), 2 states have call predecessors, (37), 2 states have call successors, (37) Word has length 287 [2021-11-17 00:05:38,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 00:05:38,149 INFO L225 Difference]: With dead ends: 7718 [2021-11-17 00:05:38,149 INFO L226 Difference]: Without dead ends: 4078 [2021-11-17 00:05:38,156 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 649 GetRequests, 635 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=160, Unknown=0, NotChecked=0, Total=240 [2021-11-17 00:05:38,157 INFO L933 BasicCegarLoop]: 1118 mSDtfsCounter, 569 mSDsluCounter, 5008 mSDsCounter, 0 mSdLazyCounter, 2227 mSolverCounterSat, 465 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 614 SdHoareTripleChecker+Valid, 6126 SdHoareTripleChecker+Invalid, 2693 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 465 IncrementalHoareTripleChecker+Valid, 2227 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.0s IncrementalHoareTripleChecker+Time [2021-11-17 00:05:38,157 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [614 Valid, 6126 Invalid, 2693 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [465 Valid, 2227 Invalid, 1 Unknown, 0 Unchecked, 7.0s Time] [2021-11-17 00:05:38,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4078 states. [2021-11-17 00:05:38,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4078 to 3775. [2021-11-17 00:05:38,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3775 states, 2830 states have (on average 1.2265017667844522) internal successors, (3471), 2881 states have internal predecessors, (3471), 753 states have call successors, (753), 192 states have call predecessors, (753), 191 states have return successors, (772), 721 states have call predecessors, (772), 736 states have call successors, (772) [2021-11-17 00:05:38,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3775 states to 3775 states and 4996 transitions. [2021-11-17 00:05:38,284 INFO L78 Accepts]: Start accepts. Automaton has 3775 states and 4996 transitions. Word has length 287 [2021-11-17 00:05:38,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 00:05:38,285 INFO L470 AbstractCegarLoop]: Abstraction has 3775 states and 4996 transitions. [2021-11-17 00:05:38,285 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 20.6) internal successors, (206), 6 states have internal predecessors, (206), 2 states have call successors, (49), 6 states have call predecessors, (49), 2 states have return successors, (37), 2 states have call predecessors, (37), 2 states have call successors, (37) [2021-11-17 00:05:38,285 INFO L276 IsEmpty]: Start isEmpty. Operand 3775 states and 4996 transitions. [2021-11-17 00:05:38,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 324 [2021-11-17 00:05:38,289 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 00:05:38,290 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 00:05:38,311 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-11-17 00:05:38,510 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2021-11-17 00:05:38,511 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 00:05:38,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 00:05:38,511 INFO L85 PathProgramCache]: Analyzing trace with hash 978197859, now seen corresponding path program 1 times [2021-11-17 00:05:38,511 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 00:05:38,512 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [981409869] [2021-11-17 00:05:38,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 00:05:38,512 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 00:05:38,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:05:38,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-11-17 00:05:38,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:05:38,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:05:38,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:05:38,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:05:38,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:05:38,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-11-17 00:05:38,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:05:38,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-11-17 00:05:38,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:05:38,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-11-17 00:05:38,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:05:38,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-11-17 00:05:38,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:05:38,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-11-17 00:05:38,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:05:38,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-11-17 00:05:38,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:05:38,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-11-17 00:05:38,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:05:38,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-11-17 00:05:38,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:05:38,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-11-17 00:05:38,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:05:38,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:05:38,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:05:38,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-11-17 00:05:38,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:05:38,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-11-17 00:05:38,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:05:38,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-11-17 00:05:38,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:05:38,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-11-17 00:05:38,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:05:38,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-17 00:05:38,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:05:38,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-11-17 00:05:38,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:05:38,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-11-17 00:05:38,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:05:38,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-11-17 00:05:38,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:05:38,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-11-17 00:05:38,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:05:38,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-17 00:05:38,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:05:38,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-11-17 00:05:38,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:05:38,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-11-17 00:05:38,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:05:38,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-11-17 00:05:38,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:05:38,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:05:38,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:05:38,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-11-17 00:05:38,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:05:38,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-11-17 00:05:38,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:05:38,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-11-17 00:05:38,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:05:38,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2021-11-17 00:05:38,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:05:38,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 00:05:38,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:05:38,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:05:38,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:05:38,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2021-11-17 00:05:38,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:05:38,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 306 [2021-11-17 00:05:38,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:05:38,869 INFO L134 CoverageAnalysis]: Checked inductivity of 188 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 188 trivial. 0 not checked. [2021-11-17 00:05:38,869 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 00:05:38,870 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [981409869] [2021-11-17 00:05:38,870 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [981409869] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 00:05:38,870 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 00:05:38,870 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-17 00:05:38,870 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291363522] [2021-11-17 00:05:38,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 00:05:38,871 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-17 00:05:38,871 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 00:05:38,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-17 00:05:38,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-17 00:05:38,871 INFO L87 Difference]: Start difference. First operand 3775 states and 4996 transitions. Second operand has 7 states, 7 states have (on average 25.857142857142858) internal successors, (181), 3 states have internal predecessors, (181), 2 states have call successors, (30), 6 states have call predecessors, (30), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2021-11-17 00:05:39,965 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:05:44,467 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:05:46,479 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:05:49,861 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:05:51,868 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:05:52,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 00:05:52,753 INFO L93 Difference]: Finished difference Result 9683 states and 13488 transitions. [2021-11-17 00:05:52,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-17 00:05:52,753 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.857142857142858) internal successors, (181), 3 states have internal predecessors, (181), 2 states have call successors, (30), 6 states have call predecessors, (30), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) Word has length 323 [2021-11-17 00:05:52,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 00:05:52,770 INFO L225 Difference]: With dead ends: 9683 [2021-11-17 00:05:52,770 INFO L226 Difference]: Without dead ends: 5911 [2021-11-17 00:05:52,778 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2021-11-17 00:05:52,779 INFO L933 BasicCegarLoop]: 1758 mSDtfsCounter, 1362 mSDsluCounter, 3270 mSDsCounter, 0 mSdLazyCounter, 2047 mSolverCounterSat, 772 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1578 SdHoareTripleChecker+Valid, 5028 SdHoareTripleChecker+Invalid, 2823 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 772 IncrementalHoareTripleChecker+Valid, 2047 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.6s IncrementalHoareTripleChecker+Time [2021-11-17 00:05:52,779 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1578 Valid, 5028 Invalid, 2823 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [772 Valid, 2047 Invalid, 4 Unknown, 0 Unchecked, 13.6s Time] [2021-11-17 00:05:52,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5911 states. [2021-11-17 00:05:53,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5911 to 3771. [2021-11-17 00:05:53,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3771 states, 2826 states have (on average 1.2254069355980184) internal successors, (3463), 2873 states have internal predecessors, (3463), 753 states have call successors, (753), 192 states have call predecessors, (753), 191 states have return successors, (772), 721 states have call predecessors, (772), 736 states have call successors, (772) [2021-11-17 00:05:53,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3771 states to 3771 states and 4988 transitions. [2021-11-17 00:05:53,018 INFO L78 Accepts]: Start accepts. Automaton has 3771 states and 4988 transitions. Word has length 323 [2021-11-17 00:05:53,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 00:05:53,018 INFO L470 AbstractCegarLoop]: Abstraction has 3771 states and 4988 transitions. [2021-11-17 00:05:53,019 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.857142857142858) internal successors, (181), 3 states have internal predecessors, (181), 2 states have call successors, (30), 6 states have call predecessors, (30), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2021-11-17 00:05:53,019 INFO L276 IsEmpty]: Start isEmpty. Operand 3771 states and 4988 transitions. [2021-11-17 00:05:53,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 343 [2021-11-17 00:05:53,024 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 00:05:53,024 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 00:05:53,024 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-11-17 00:05:53,024 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 00:05:53,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 00:05:53,025 INFO L85 PathProgramCache]: Analyzing trace with hash -256626405, now seen corresponding path program 1 times [2021-11-17 00:05:53,025 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 00:05:53,025 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714222653] [2021-11-17 00:05:53,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 00:05:53,025 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 00:05:53,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:05:53,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-11-17 00:05:53,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:05:53,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:05:53,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:05:53,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:05:53,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:05:53,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-11-17 00:05:53,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:05:53,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-11-17 00:05:53,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:05:53,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-11-17 00:05:53,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:05:53,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-11-17 00:05:53,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:05:53,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-11-17 00:05:53,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:05:53,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-11-17 00:05:53,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:05:53,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-11-17 00:05:53,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:05:53,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-11-17 00:05:53,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:05:53,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-11-17 00:05:53,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:05:53,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:05:53,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:05:53,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-11-17 00:05:53,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:05:53,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-11-17 00:05:53,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:05:53,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-11-17 00:05:53,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:05:53,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-11-17 00:05:53,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:05:53,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-17 00:05:53,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:05:53,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-11-17 00:05:53,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:05:53,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-11-17 00:05:53,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:05:53,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-11-17 00:05:53,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:05:53,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-11-17 00:05:53,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:05:53,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-17 00:05:53,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:05:53,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-11-17 00:05:53,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:05:53,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-11-17 00:05:53,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:05:53,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-11-17 00:05:53,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:05:53,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:05:53,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:05:53,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-11-17 00:05:53,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:05:53,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-11-17 00:05:53,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:05:53,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-11-17 00:05:53,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:05:53,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2021-11-17 00:05:53,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:05:53,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 00:05:53,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:05:53,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:05:53,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:05:53,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 276 [2021-11-17 00:05:53,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:05:53,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-17 00:05:53,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:05:53,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-17 00:05:53,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:05:53,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2021-11-17 00:05:53,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:05:53,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 00:05:53,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:05:53,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2021-11-17 00:05:53,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:05:53,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2021-11-17 00:05:53,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:05:53,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 325 [2021-11-17 00:05:53,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:05:53,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 331 [2021-11-17 00:05:53,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:05:53,436 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 188 trivial. 0 not checked. [2021-11-17 00:05:53,436 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 00:05:53,436 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [714222653] [2021-11-17 00:05:53,436 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [714222653] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 00:05:53,436 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 00:05:53,436 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-17 00:05:53,436 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373675458] [2021-11-17 00:05:53,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 00:05:53,437 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-17 00:05:53,437 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 00:05:53,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-17 00:05:53,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2021-11-17 00:05:53,438 INFO L87 Difference]: Start difference. First operand 3771 states and 4988 transitions. Second operand has 12 states, 12 states have (on average 15.666666666666666) internal successors, (188), 5 states have internal predecessors, (188), 2 states have call successors, (35), 8 states have call predecessors, (35), 3 states have return successors, (34), 3 states have call predecessors, (34), 2 states have call successors, (34) [2021-11-17 00:05:55,326 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.26s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:06:01,707 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:06:03,719 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:06:06,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 00:06:06,153 INFO L93 Difference]: Finished difference Result 5869 states and 7976 transitions. [2021-11-17 00:06:06,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-17 00:06:06,154 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 15.666666666666666) internal successors, (188), 5 states have internal predecessors, (188), 2 states have call successors, (35), 8 states have call predecessors, (35), 3 states have return successors, (34), 3 states have call predecessors, (34), 2 states have call successors, (34) Word has length 342 [2021-11-17 00:06:06,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 00:06:06,165 INFO L225 Difference]: With dead ends: 5869 [2021-11-17 00:06:06,165 INFO L226 Difference]: Without dead ends: 4062 [2021-11-17 00:06:06,170 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=87, Invalid=293, Unknown=0, NotChecked=0, Total=380 [2021-11-17 00:06:06,171 INFO L933 BasicCegarLoop]: 1109 mSDtfsCounter, 923 mSDsluCounter, 5203 mSDsCounter, 0 mSdLazyCounter, 3553 mSolverCounterSat, 772 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 977 SdHoareTripleChecker+Valid, 6312 SdHoareTripleChecker+Invalid, 4327 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 772 IncrementalHoareTripleChecker+Valid, 3553 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.4s IncrementalHoareTripleChecker+Time [2021-11-17 00:06:06,171 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [977 Valid, 6312 Invalid, 4327 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [772 Valid, 3553 Invalid, 2 Unknown, 0 Unchecked, 12.4s Time] [2021-11-17 00:06:06,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4062 states. [2021-11-17 00:06:06,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4062 to 3759. [2021-11-17 00:06:06,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3759 states, 2816 states have (on average 1.2254971590909092) internal successors, (3451), 2865 states have internal predecessors, (3451), 753 states have call successors, (753), 192 states have call predecessors, (753), 189 states have return successors, (768), 717 states have call predecessors, (768), 736 states have call successors, (768) [2021-11-17 00:06:06,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3759 states to 3759 states and 4972 transitions. [2021-11-17 00:06:06,300 INFO L78 Accepts]: Start accepts. Automaton has 3759 states and 4972 transitions. Word has length 342 [2021-11-17 00:06:06,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 00:06:06,302 INFO L470 AbstractCegarLoop]: Abstraction has 3759 states and 4972 transitions. [2021-11-17 00:06:06,302 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 15.666666666666666) internal successors, (188), 5 states have internal predecessors, (188), 2 states have call successors, (35), 8 states have call predecessors, (35), 3 states have return successors, (34), 3 states have call predecessors, (34), 2 states have call successors, (34) [2021-11-17 00:06:06,302 INFO L276 IsEmpty]: Start isEmpty. Operand 3759 states and 4972 transitions. [2021-11-17 00:06:06,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2021-11-17 00:06:06,307 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 00:06:06,308 INFO L514 BasicCegarLoop]: trace histogram [16, 16, 6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 00:06:06,308 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-11-17 00:06:06,308 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 00:06:06,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 00:06:06,309 INFO L85 PathProgramCache]: Analyzing trace with hash 797329210, now seen corresponding path program 2 times [2021-11-17 00:06:06,309 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 00:06:06,309 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2135402729] [2021-11-17 00:06:06,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 00:06:06,309 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 00:06:06,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:06:06,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-11-17 00:06:06,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:06:06,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:06:06,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:06:06,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:06:06,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:06:06,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-11-17 00:06:06,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:06:06,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-11-17 00:06:06,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:06:06,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-11-17 00:06:06,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:06:06,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-11-17 00:06:06,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:06:06,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-11-17 00:06:06,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:06:06,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-11-17 00:06:06,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:06:06,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-11-17 00:06:06,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:06:06,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-11-17 00:06:06,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:06:06,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-11-17 00:06:06,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:06:06,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:06:06,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:06:06,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-11-17 00:06:06,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:06:06,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:06:06,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:06:06,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-11-17 00:06:06,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:06:06,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:06:06,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:06:06,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-11-17 00:06:06,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:06:06,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:06:06,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:06:06,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-11-17 00:06:06,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:06:06,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:06:06,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:06:06,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2021-11-17 00:06:06,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:06:06,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2021-11-17 00:06:06,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:06:06,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 00:06:06,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:06:06,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:06:06,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:06:06,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-11-17 00:06:06,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:06:06,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-11-17 00:06:06,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:06:06,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2021-11-17 00:06:06,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:06:06,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2021-11-17 00:06:06,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:06:06,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 280 [2021-11-17 00:06:06,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:06:06,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2021-11-17 00:06:06,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:06:06,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2021-11-17 00:06:06,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:06:06,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2021-11-17 00:06:06,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:06:06,669 INFO L134 CoverageAnalysis]: Checked inductivity of 494 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 492 trivial. 0 not checked. [2021-11-17 00:06:06,669 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 00:06:06,669 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2135402729] [2021-11-17 00:06:06,669 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2135402729] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 00:06:06,669 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 00:06:06,670 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-17 00:06:06,670 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53907612] [2021-11-17 00:06:06,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 00:06:06,670 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-17 00:06:06,670 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 00:06:06,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-17 00:06:06,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-11-17 00:06:06,671 INFO L87 Difference]: Start difference. First operand 3759 states and 4972 transitions. Second operand has 9 states, 9 states have (on average 17.88888888888889) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (27), 6 states have call predecessors, (27), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2021-11-17 00:06:11,091 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:06:13,099 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:06:14,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 00:06:14,952 INFO L93 Difference]: Finished difference Result 3963 states and 5359 transitions. [2021-11-17 00:06:14,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-17 00:06:14,953 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 17.88888888888889) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (27), 6 states have call predecessors, (27), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) Word has length 320 [2021-11-17 00:06:14,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 00:06:14,957 INFO L225 Difference]: With dead ends: 3963 [2021-11-17 00:06:14,958 INFO L226 Difference]: Without dead ends: 2118 [2021-11-17 00:06:14,960 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=154, Unknown=0, NotChecked=0, Total=210 [2021-11-17 00:06:14,961 INFO L933 BasicCegarLoop]: 1138 mSDtfsCounter, 1124 mSDsluCounter, 3577 mSDsCounter, 0 mSdLazyCounter, 1628 mSolverCounterSat, 966 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1168 SdHoareTripleChecker+Valid, 4715 SdHoareTripleChecker+Invalid, 2596 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 966 IncrementalHoareTripleChecker+Valid, 1628 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.1s IncrementalHoareTripleChecker+Time [2021-11-17 00:06:14,961 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1168 Valid, 4715 Invalid, 2596 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [966 Valid, 1628 Invalid, 2 Unknown, 0 Unchecked, 8.1s Time] [2021-11-17 00:06:14,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2118 states. [2021-11-17 00:06:15,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2118 to 1952. [2021-11-17 00:06:15,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1952 states, 1459 states have (on average 1.223440712816998) internal successors, (1785), 1483 states have internal predecessors, (1785), 392 states have call successors, (392), 103 states have call predecessors, (392), 100 states have return successors, (385), 373 states have call predecessors, (385), 381 states have call successors, (385) [2021-11-17 00:06:15,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1952 states to 1952 states and 2562 transitions. [2021-11-17 00:06:15,027 INFO L78 Accepts]: Start accepts. Automaton has 1952 states and 2562 transitions. Word has length 320 [2021-11-17 00:06:15,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 00:06:15,028 INFO L470 AbstractCegarLoop]: Abstraction has 1952 states and 2562 transitions. [2021-11-17 00:06:15,028 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 17.88888888888889) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (27), 6 states have call predecessors, (27), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2021-11-17 00:06:15,028 INFO L276 IsEmpty]: Start isEmpty. Operand 1952 states and 2562 transitions. [2021-11-17 00:06:15,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 376 [2021-11-17 00:06:15,032 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 00:06:15,032 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 00:06:15,032 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-11-17 00:06:15,033 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 00:06:15,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 00:06:15,033 INFO L85 PathProgramCache]: Analyzing trace with hash -975441059, now seen corresponding path program 1 times [2021-11-17 00:06:15,033 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 00:06:15,033 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1475415801] [2021-11-17 00:06:15,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 00:06:15,034 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 00:06:15,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:06:15,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-11-17 00:06:15,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:06:15,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:06:15,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:06:15,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:06:15,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:06:15,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-11-17 00:06:15,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:06:15,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-11-17 00:06:15,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:06:15,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-11-17 00:06:15,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:06:15,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-11-17 00:06:15,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:06:15,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-11-17 00:06:15,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:06:15,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-11-17 00:06:15,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:06:15,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-11-17 00:06:15,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:06:15,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-11-17 00:06:15,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:06:15,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-11-17 00:06:15,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:06:15,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:06:15,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:06:15,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-11-17 00:06:15,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:06:15,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-11-17 00:06:15,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:06:15,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-11-17 00:06:15,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:06:15,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-11-17 00:06:15,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:06:15,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-17 00:06:15,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:06:15,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-11-17 00:06:15,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:06:15,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-11-17 00:06:15,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:06:15,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-11-17 00:06:15,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:06:15,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-11-17 00:06:15,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:06:15,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-17 00:06:15,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:06:15,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-11-17 00:06:15,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:06:15,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-11-17 00:06:15,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:06:15,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-11-17 00:06:15,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:06:15,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:06:15,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:06:15,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-11-17 00:06:15,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:06:15,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-11-17 00:06:15,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:06:15,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-11-17 00:06:15,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:06:15,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2021-11-17 00:06:15,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:06:15,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2021-11-17 00:06:15,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:06:15,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2021-11-17 00:06:15,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:06:15,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2021-11-17 00:06:15,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:06:15,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2021-11-17 00:06:15,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:06:15,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 00:06:15,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:06:15,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:06:15,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:06:15,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2021-11-17 00:06:15,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:06:15,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:06:15,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:06:15,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 328 [2021-11-17 00:06:15,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:06:15,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 333 [2021-11-17 00:06:15,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:06:15,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2021-11-17 00:06:15,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:06:15,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 343 [2021-11-17 00:06:15,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:06:15,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 353 [2021-11-17 00:06:15,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:06:15,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 358 [2021-11-17 00:06:15,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:06:15,423 INFO L134 CoverageAnalysis]: Checked inductivity of 227 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 227 trivial. 0 not checked. [2021-11-17 00:06:15,423 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 00:06:15,423 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1475415801] [2021-11-17 00:06:15,424 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1475415801] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 00:06:15,424 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 00:06:15,424 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-17 00:06:15,424 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792287133] [2021-11-17 00:06:15,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 00:06:15,424 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-17 00:06:15,425 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 00:06:15,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-17 00:06:15,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-11-17 00:06:15,425 INFO L87 Difference]: Start difference. First operand 1952 states and 2562 transitions. Second operand has 9 states, 9 states have (on average 22.0) internal successors, (198), 4 states have internal predecessors, (198), 2 states have call successors, (39), 6 states have call predecessors, (39), 2 states have return successors, (36), 3 states have call predecessors, (36), 2 states have call successors, (36) [2021-11-17 00:06:20,133 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:06:22,143 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:06:24,162 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:06:26,171 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:06:29,988 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:06:32,001 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:06:34,017 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:06:36,030 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:06:36,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 00:06:36,747 INFO L93 Difference]: Finished difference Result 4990 states and 6906 transitions. [2021-11-17 00:06:36,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-17 00:06:36,748 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 22.0) internal successors, (198), 4 states have internal predecessors, (198), 2 states have call successors, (39), 6 states have call predecessors, (39), 2 states have return successors, (36), 3 states have call predecessors, (36), 2 states have call successors, (36) Word has length 375 [2021-11-17 00:06:36,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 00:06:36,756 INFO L225 Difference]: With dead ends: 4990 [2021-11-17 00:06:36,756 INFO L226 Difference]: Without dead ends: 3041 [2021-11-17 00:06:36,760 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2021-11-17 00:06:36,761 INFO L933 BasicCegarLoop]: 1751 mSDtfsCounter, 1541 mSDsluCounter, 6133 mSDsCounter, 0 mSdLazyCounter, 2864 mSolverCounterSat, 956 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1742 SdHoareTripleChecker+Valid, 7884 SdHoareTripleChecker+Invalid, 3828 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 956 IncrementalHoareTripleChecker+Valid, 2864 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.1s IncrementalHoareTripleChecker+Time [2021-11-17 00:06:36,761 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1742 Valid, 7884 Invalid, 3828 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [956 Valid, 2864 Invalid, 8 Unknown, 0 Unchecked, 21.1s Time] [2021-11-17 00:06:36,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3041 states. [2021-11-17 00:06:36,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3041 to 1960. [2021-11-17 00:06:36,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1960 states, 1465 states have (on average 1.2225255972696245) internal successors, (1791), 1489 states have internal predecessors, (1791), 392 states have call successors, (392), 103 states have call predecessors, (392), 102 states have return successors, (403), 375 states have call predecessors, (403), 381 states have call successors, (403) [2021-11-17 00:06:36,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1960 states to 1960 states and 2586 transitions. [2021-11-17 00:06:36,838 INFO L78 Accepts]: Start accepts. Automaton has 1960 states and 2586 transitions. Word has length 375 [2021-11-17 00:06:36,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 00:06:36,838 INFO L470 AbstractCegarLoop]: Abstraction has 1960 states and 2586 transitions. [2021-11-17 00:06:36,839 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 22.0) internal successors, (198), 4 states have internal predecessors, (198), 2 states have call successors, (39), 6 states have call predecessors, (39), 2 states have return successors, (36), 3 states have call predecessors, (36), 2 states have call successors, (36) [2021-11-17 00:06:36,839 INFO L276 IsEmpty]: Start isEmpty. Operand 1960 states and 2586 transitions. [2021-11-17 00:06:36,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 399 [2021-11-17 00:06:36,843 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 00:06:36,843 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 00:06:36,843 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-11-17 00:06:36,843 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 00:06:36,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 00:06:36,843 INFO L85 PathProgramCache]: Analyzing trace with hash -1354711446, now seen corresponding path program 1 times [2021-11-17 00:06:36,844 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 00:06:36,844 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057914946] [2021-11-17 00:06:36,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 00:06:36,844 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 00:06:36,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:06:36,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-11-17 00:06:36,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:06:36,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:06:36,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:06:36,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:06:36,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:06:36,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-11-17 00:06:36,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:06:36,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-11-17 00:06:36,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:06:36,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-11-17 00:06:36,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:06:36,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-11-17 00:06:36,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:06:36,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-11-17 00:06:36,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:06:36,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-11-17 00:06:36,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:06:36,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-11-17 00:06:36,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:06:37,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-11-17 00:06:37,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:06:37,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-11-17 00:06:37,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:06:37,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:06:37,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:06:37,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-11-17 00:06:37,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:06:37,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-11-17 00:06:37,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:06:37,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-11-17 00:06:37,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:06:37,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-11-17 00:06:37,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:06:37,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-17 00:06:37,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:06:37,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-11-17 00:06:37,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:06:37,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-11-17 00:06:37,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:06:37,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-11-17 00:06:37,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:06:37,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-11-17 00:06:37,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:06:37,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-17 00:06:37,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:06:37,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-11-17 00:06:37,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:06:37,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-11-17 00:06:37,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:06:37,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-11-17 00:06:37,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:06:37,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:06:37,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:06:37,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-11-17 00:06:37,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:06:37,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-11-17 00:06:37,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:06:37,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-11-17 00:06:37,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:06:37,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 276 [2021-11-17 00:06:37,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:06:37,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:06:37,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:06:37,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 00:06:37,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:06:37,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-11-17 00:06:37,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:06:37,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-11-17 00:06:37,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:06:37,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-11-17 00:06:37,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:06:37,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-11-17 00:06:37,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:06:37,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-11-17 00:06:37,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:06:37,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 00:06:37,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:06:37,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:06:37,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:06:37,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-11-17 00:06:37,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:06:37,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-11-17 00:06:37,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:06:37,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 352 [2021-11-17 00:06:37,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:06:37,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 00:06:37,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:06:37,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:06:37,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:06:37,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 376 [2021-11-17 00:06:37,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:06:37,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 381 [2021-11-17 00:06:37,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:06:37,263 INFO L134 CoverageAnalysis]: Checked inductivity of 246 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 244 trivial. 0 not checked. [2021-11-17 00:06:37,263 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 00:06:37,263 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2057914946] [2021-11-17 00:06:37,263 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2057914946] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 00:06:37,263 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 00:06:37,263 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-17 00:06:37,263 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140243101] [2021-11-17 00:06:37,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 00:06:37,264 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-17 00:06:37,264 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 00:06:37,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-17 00:06:37,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-11-17 00:06:37,265 INFO L87 Difference]: Start difference. First operand 1960 states and 2586 transitions. Second operand has 9 states, 9 states have (on average 23.11111111111111) internal successors, (208), 4 states have internal predecessors, (208), 2 states have call successors, (40), 6 states have call predecessors, (40), 2 states have return successors, (37), 3 states have call predecessors, (37), 2 states have call successors, (37) [2021-11-17 00:06:42,639 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:06:44,648 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:06:46,657 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:06:50,951 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:06:52,965 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:06:54,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 00:06:54,468 INFO L93 Difference]: Finished difference Result 5002 states and 6960 transitions. [2021-11-17 00:06:54,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-17 00:06:54,469 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 23.11111111111111) internal successors, (208), 4 states have internal predecessors, (208), 2 states have call successors, (40), 6 states have call predecessors, (40), 2 states have return successors, (37), 3 states have call predecessors, (37), 2 states have call successors, (37) Word has length 398 [2021-11-17 00:06:54,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 00:06:54,476 INFO L225 Difference]: With dead ends: 5002 [2021-11-17 00:06:54,476 INFO L226 Difference]: Without dead ends: 3045 [2021-11-17 00:06:54,480 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2021-11-17 00:06:54,480 INFO L933 BasicCegarLoop]: 1759 mSDtfsCounter, 1102 mSDsluCounter, 6728 mSDsCounter, 0 mSdLazyCounter, 3673 mSolverCounterSat, 521 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1316 SdHoareTripleChecker+Valid, 8487 SdHoareTripleChecker+Invalid, 4199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 521 IncrementalHoareTripleChecker+Valid, 3673 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.0s IncrementalHoareTripleChecker+Time [2021-11-17 00:06:54,481 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1316 Valid, 8487 Invalid, 4199 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [521 Valid, 3673 Invalid, 5 Unknown, 0 Unchecked, 17.0s Time] [2021-11-17 00:06:54,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3045 states. [2021-11-17 00:06:54,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3045 to 1964. [2021-11-17 00:06:54,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1964 states, 1469 states have (on average 1.221919673247107) internal successors, (1795), 1491 states have internal predecessors, (1795), 392 states have call successors, (392), 103 states have call predecessors, (392), 102 states have return successors, (403), 377 states have call predecessors, (403), 381 states have call successors, (403) [2021-11-17 00:06:54,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1964 states to 1964 states and 2590 transitions. [2021-11-17 00:06:54,558 INFO L78 Accepts]: Start accepts. Automaton has 1964 states and 2590 transitions. Word has length 398 [2021-11-17 00:06:54,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 00:06:54,558 INFO L470 AbstractCegarLoop]: Abstraction has 1964 states and 2590 transitions. [2021-11-17 00:06:54,559 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 23.11111111111111) internal successors, (208), 4 states have internal predecessors, (208), 2 states have call successors, (40), 6 states have call predecessors, (40), 2 states have return successors, (37), 3 states have call predecessors, (37), 2 states have call successors, (37) [2021-11-17 00:06:54,559 INFO L276 IsEmpty]: Start isEmpty. Operand 1964 states and 2590 transitions. [2021-11-17 00:06:54,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 392 [2021-11-17 00:06:54,563 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 00:06:54,563 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 00:06:54,563 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-11-17 00:06:54,563 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 00:06:54,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 00:06:54,563 INFO L85 PathProgramCache]: Analyzing trace with hash -403178032, now seen corresponding path program 1 times [2021-11-17 00:06:54,564 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 00:06:54,564 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [629483937] [2021-11-17 00:06:54,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 00:06:54,564 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 00:06:54,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:06:54,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-11-17 00:06:54,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:06:54,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:06:54,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:06:54,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:06:54,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:06:54,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-11-17 00:06:54,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:06:54,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-11-17 00:06:54,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:06:54,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-11-17 00:06:54,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:06:54,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-11-17 00:06:54,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:06:54,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-11-17 00:06:54,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:06:54,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-11-17 00:06:54,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:06:54,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-11-17 00:06:54,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:06:54,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-11-17 00:06:54,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:06:54,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-11-17 00:06:54,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:06:54,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:06:54,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:06:54,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-11-17 00:06:54,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:06:54,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-11-17 00:06:54,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:06:54,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-11-17 00:06:54,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:06:54,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-11-17 00:06:54,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:06:54,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-17 00:06:54,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:06:54,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-11-17 00:06:54,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:06:54,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-11-17 00:06:54,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:06:54,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-11-17 00:06:54,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:06:54,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-11-17 00:06:54,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:06:54,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-17 00:06:54,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:06:54,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-11-17 00:06:54,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:06:54,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-11-17 00:06:54,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:06:54,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-11-17 00:06:54,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:06:54,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:06:54,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:06:54,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-11-17 00:06:54,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:06:54,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-11-17 00:06:54,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:06:54,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-11-17 00:06:54,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:06:54,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2021-11-17 00:06:54,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:06:54,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2021-11-17 00:06:54,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:06:54,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2021-11-17 00:06:54,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:06:54,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2021-11-17 00:06:54,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:06:54,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2021-11-17 00:06:54,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:06:54,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 00:06:54,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:06:54,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:06:54,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:06:54,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-11-17 00:06:54,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:06:54,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-11-17 00:06:54,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:06:54,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 331 [2021-11-17 00:06:54,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:06:54,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:06:54,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:06:54,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2021-11-17 00:06:54,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:06:54,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2021-11-17 00:06:54,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:06:54,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 354 [2021-11-17 00:06:54,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:06:54,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 359 [2021-11-17 00:06:54,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:06:54,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 369 [2021-11-17 00:06:54,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:06:55,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 374 [2021-11-17 00:06:55,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:06:55,013 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 230 trivial. 0 not checked. [2021-11-17 00:06:55,013 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 00:06:55,013 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [629483937] [2021-11-17 00:06:55,013 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [629483937] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 00:06:55,013 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 00:06:55,014 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-17 00:06:55,014 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755741172] [2021-11-17 00:06:55,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 00:06:55,014 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-17 00:06:55,014 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 00:06:55,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-17 00:06:55,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2021-11-17 00:06:55,015 INFO L87 Difference]: Start difference. First operand 1964 states and 2590 transitions. Second operand has 13 states, 13 states have (on average 16.0) internal successors, (208), 7 states have internal predecessors, (208), 3 states have call successors, (41), 7 states have call predecessors, (41), 2 states have return successors, (38), 4 states have call predecessors, (38), 3 states have call successors, (38) [2021-11-17 00:07:01,859 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:07:03,876 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:07:05,895 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:07:07,921 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:07:12,892 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:07:14,901 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:07:16,921 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:07:18,936 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:07:20,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 00:07:20,163 INFO L93 Difference]: Finished difference Result 5014 states and 6946 transitions. [2021-11-17 00:07:20,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-17 00:07:20,163 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 16.0) internal successors, (208), 7 states have internal predecessors, (208), 3 states have call successors, (41), 7 states have call predecessors, (41), 2 states have return successors, (38), 4 states have call predecessors, (38), 3 states have call successors, (38) Word has length 391 [2021-11-17 00:07:20,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 00:07:20,170 INFO L225 Difference]: With dead ends: 5014 [2021-11-17 00:07:20,170 INFO L226 Difference]: Without dead ends: 3053 [2021-11-17 00:07:20,174 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=97, Invalid=365, Unknown=0, NotChecked=0, Total=462 [2021-11-17 00:07:20,174 INFO L933 BasicCegarLoop]: 1759 mSDtfsCounter, 1350 mSDsluCounter, 11317 mSDsCounter, 0 mSdLazyCounter, 4769 mSolverCounterSat, 748 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1541 SdHoareTripleChecker+Valid, 13076 SdHoareTripleChecker+Invalid, 5525 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 748 IncrementalHoareTripleChecker+Valid, 4769 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24.8s IncrementalHoareTripleChecker+Time [2021-11-17 00:07:20,174 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1541 Valid, 13076 Invalid, 5525 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [748 Valid, 4769 Invalid, 8 Unknown, 0 Unchecked, 24.8s Time] [2021-11-17 00:07:20,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3053 states. [2021-11-17 00:07:20,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3053 to 1968. [2021-11-17 00:07:20,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1968 states, 1471 states have (on average 1.221617946974847) internal successors, (1797), 1495 states have internal predecessors, (1797), 392 states have call successors, (392), 103 states have call predecessors, (392), 104 states have return successors, (421), 377 states have call predecessors, (421), 381 states have call successors, (421) [2021-11-17 00:07:20,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1968 states to 1968 states and 2610 transitions. [2021-11-17 00:07:20,254 INFO L78 Accepts]: Start accepts. Automaton has 1968 states and 2610 transitions. Word has length 391 [2021-11-17 00:07:20,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 00:07:20,254 INFO L470 AbstractCegarLoop]: Abstraction has 1968 states and 2610 transitions. [2021-11-17 00:07:20,254 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 16.0) internal successors, (208), 7 states have internal predecessors, (208), 3 states have call successors, (41), 7 states have call predecessors, (41), 2 states have return successors, (38), 4 states have call predecessors, (38), 3 states have call successors, (38) [2021-11-17 00:07:20,255 INFO L276 IsEmpty]: Start isEmpty. Operand 1968 states and 2610 transitions. [2021-11-17 00:07:20,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 412 [2021-11-17 00:07:20,258 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 00:07:20,259 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 00:07:20,259 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-11-17 00:07:20,259 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 00:07:20,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 00:07:20,259 INFO L85 PathProgramCache]: Analyzing trace with hash -276829559, now seen corresponding path program 1 times [2021-11-17 00:07:20,259 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 00:07:20,260 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [303046400] [2021-11-17 00:07:20,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 00:07:20,260 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 00:07:20,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:07:20,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-11-17 00:07:20,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:07:20,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:07:20,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:07:20,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:07:20,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:07:20,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-11-17 00:07:20,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:07:20,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-11-17 00:07:20,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:07:20,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-11-17 00:07:20,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:07:20,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-11-17 00:07:20,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:07:20,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-11-17 00:07:20,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:07:20,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-11-17 00:07:20,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:07:20,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-11-17 00:07:20,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:07:20,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-11-17 00:07:20,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:07:20,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-11-17 00:07:20,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:07:20,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:07:20,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:07:20,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-11-17 00:07:20,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:07:20,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-11-17 00:07:20,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:07:20,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-11-17 00:07:20,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:07:20,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-11-17 00:07:20,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:07:20,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-17 00:07:20,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:07:20,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-11-17 00:07:20,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:07:20,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-11-17 00:07:20,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:07:20,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-11-17 00:07:20,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:07:20,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-11-17 00:07:20,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:07:20,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-17 00:07:20,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:07:20,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-11-17 00:07:20,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:07:20,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-11-17 00:07:20,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:07:20,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-11-17 00:07:20,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:07:20,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:07:20,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:07:20,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-11-17 00:07:20,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:07:20,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-11-17 00:07:20,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:07:20,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-11-17 00:07:20,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:07:20,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2021-11-17 00:07:20,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:07:20,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2021-11-17 00:07:20,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:07:20,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2021-11-17 00:07:20,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:07:20,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2021-11-17 00:07:20,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:07:20,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2021-11-17 00:07:20,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:07:20,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 00:07:20,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:07:20,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:07:20,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:07:20,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-11-17 00:07:20,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:07:20,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-11-17 00:07:20,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:07:20,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-11-17 00:07:20,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:07:20,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-11-17 00:07:20,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:07:20,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-11-17 00:07:20,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:07:20,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 351 [2021-11-17 00:07:20,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:07:20,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:07:20,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:07:20,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 364 [2021-11-17 00:07:20,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:07:20,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 369 [2021-11-17 00:07:20,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:07:20,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 374 [2021-11-17 00:07:20,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:07:20,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 379 [2021-11-17 00:07:20,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:07:20,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 389 [2021-11-17 00:07:20,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:07:20,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 394 [2021-11-17 00:07:20,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:07:20,869 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 216 trivial. 0 not checked. [2021-11-17 00:07:20,870 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 00:07:20,870 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [303046400] [2021-11-17 00:07:20,870 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [303046400] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-17 00:07:20,870 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [672066317] [2021-11-17 00:07:20,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 00:07:20,870 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-17 00:07:20,870 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-17 00:07:20,872 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-17 00:07:20,872 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-11-17 00:07:21,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:07:21,430 INFO L263 TraceCheckSpWp]: Trace formula consists of 3066 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-17 00:07:21,497 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-17 00:07:22,167 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 230 trivial. 0 not checked. [2021-11-17 00:07:22,167 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-17 00:07:22,167 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [672066317] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 00:07:22,167 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-17 00:07:22,167 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [16] total 20 [2021-11-17 00:07:22,167 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516913849] [2021-11-17 00:07:22,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 00:07:22,168 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-17 00:07:22,168 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 00:07:22,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-17 00:07:22,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=338, Unknown=0, NotChecked=0, Total=380 [2021-11-17 00:07:22,168 INFO L87 Difference]: Start difference. First operand 1968 states and 2610 transitions. Second operand has 6 states, 6 states have (on average 37.0) internal successors, (222), 5 states have internal predecessors, (222), 2 states have call successors, (44), 2 states have call predecessors, (44), 2 states have return successors, (41), 2 states have call predecessors, (41), 1 states have call successors, (41) [2021-11-17 00:07:22,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 00:07:22,260 INFO L93 Difference]: Finished difference Result 2028 states and 2672 transitions. [2021-11-17 00:07:22,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-17 00:07:22,260 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 37.0) internal successors, (222), 5 states have internal predecessors, (222), 2 states have call successors, (44), 2 states have call predecessors, (44), 2 states have return successors, (41), 2 states have call predecessors, (41), 1 states have call successors, (41) Word has length 411 [2021-11-17 00:07:22,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 00:07:22,264 INFO L225 Difference]: With dead ends: 2028 [2021-11-17 00:07:22,264 INFO L226 Difference]: Without dead ends: 1952 [2021-11-17 00:07:22,265 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 523 GetRequests, 504 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=374, Unknown=0, NotChecked=0, Total=420 [2021-11-17 00:07:22,265 INFO L933 BasicCegarLoop]: 1187 mSDtfsCounter, 5 mSDsluCounter, 4733 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 5920 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-17 00:07:22,265 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 5920 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-17 00:07:22,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1952 states. [2021-11-17 00:07:22,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1952 to 1950. [2021-11-17 00:07:22,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1950 states, 1459 states have (on average 1.2200137080191913) internal successors, (1780), 1481 states have internal predecessors, (1780), 386 states have call successors, (386), 102 states have call predecessors, (386), 104 states have return successors, (418), 374 states have call predecessors, (418), 378 states have call successors, (418) [2021-11-17 00:07:22,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1950 states to 1950 states and 2584 transitions. [2021-11-17 00:07:22,346 INFO L78 Accepts]: Start accepts. Automaton has 1950 states and 2584 transitions. Word has length 411 [2021-11-17 00:07:22,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 00:07:22,346 INFO L470 AbstractCegarLoop]: Abstraction has 1950 states and 2584 transitions. [2021-11-17 00:07:22,346 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 37.0) internal successors, (222), 5 states have internal predecessors, (222), 2 states have call successors, (44), 2 states have call predecessors, (44), 2 states have return successors, (41), 2 states have call predecessors, (41), 1 states have call successors, (41) [2021-11-17 00:07:22,346 INFO L276 IsEmpty]: Start isEmpty. Operand 1950 states and 2584 transitions. [2021-11-17 00:07:22,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 452 [2021-11-17 00:07:22,350 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 00:07:22,351 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 00:07:22,373 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-11-17 00:07:22,573 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-17 00:07:22,573 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 00:07:22,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 00:07:22,574 INFO L85 PathProgramCache]: Analyzing trace with hash 661591388, now seen corresponding path program 1 times [2021-11-17 00:07:22,574 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 00:07:22,574 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [340823080] [2021-11-17 00:07:22,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 00:07:22,574 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 00:07:22,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:07:22,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-11-17 00:07:22,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:07:22,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:07:22,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:07:22,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:07:22,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:07:22,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-11-17 00:07:22,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:07:22,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-11-17 00:07:22,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:07:22,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-11-17 00:07:22,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:07:22,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-11-17 00:07:22,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:07:22,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-11-17 00:07:22,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:07:22,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-11-17 00:07:22,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:07:22,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-11-17 00:07:22,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:07:22,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-11-17 00:07:22,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:07:22,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-11-17 00:07:22,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:07:22,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:07:22,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:07:22,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-11-17 00:07:22,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:07:22,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-11-17 00:07:22,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:07:22,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-11-17 00:07:22,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:07:22,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-11-17 00:07:22,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:07:22,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-17 00:07:22,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:07:22,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-11-17 00:07:22,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:07:22,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-11-17 00:07:22,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:07:22,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-11-17 00:07:22,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:07:22,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-11-17 00:07:22,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:07:22,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-17 00:07:22,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:07:22,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-11-17 00:07:22,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:07:22,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-11-17 00:07:22,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:07:22,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-11-17 00:07:22,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:07:22,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:07:22,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:07:22,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-11-17 00:07:22,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:07:22,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-11-17 00:07:22,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:07:22,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-11-17 00:07:22,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:07:22,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2021-11-17 00:07:22,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:07:22,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2021-11-17 00:07:22,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:07:22,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2021-11-17 00:07:22,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:07:22,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2021-11-17 00:07:22,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:07:22,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2021-11-17 00:07:22,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:07:22,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 00:07:22,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:07:22,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:07:22,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:07:23,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-11-17 00:07:23,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:07:23,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-11-17 00:07:23,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:07:23,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-11-17 00:07:23,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:07:23,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-11-17 00:07:23,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:07:23,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-11-17 00:07:23,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:07:23,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 351 [2021-11-17 00:07:23,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:07:23,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:07:23,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:07:23,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 364 [2021-11-17 00:07:23,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:07:23,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 369 [2021-11-17 00:07:23,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:07:23,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 374 [2021-11-17 00:07:23,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:07:23,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 379 [2021-11-17 00:07:23,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:07:23,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 385 [2021-11-17 00:07:23,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:07:23,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-17 00:07:23,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:07:23,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-17 00:07:23,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:07:23,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 411 [2021-11-17 00:07:23,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:07:23,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 00:07:23,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:07:23,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 424 [2021-11-17 00:07:23,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:07:23,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 428 [2021-11-17 00:07:23,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:07:23,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 434 [2021-11-17 00:07:23,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:07:23,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 440 [2021-11-17 00:07:23,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:07:23,171 INFO L134 CoverageAnalysis]: Checked inductivity of 237 backedges. 12 proven. 6 refuted. 0 times theorem prover too weak. 219 trivial. 0 not checked. [2021-11-17 00:07:23,171 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 00:07:23,171 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [340823080] [2021-11-17 00:07:23,171 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [340823080] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-17 00:07:23,171 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1542803108] [2021-11-17 00:07:23,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 00:07:23,172 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-17 00:07:23,172 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-17 00:07:23,179 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-17 00:07:23,203 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-11-17 00:07:23,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:07:23,788 INFO L263 TraceCheckSpWp]: Trace formula consists of 3271 conjuncts, 15 conjunts are in the unsatisfiable core [2021-11-17 00:07:23,794 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-17 00:07:24,450 INFO L134 CoverageAnalysis]: Checked inductivity of 237 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 203 trivial. 0 not checked. [2021-11-17 00:07:24,450 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-17 00:07:24,450 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1542803108] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 00:07:24,450 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-17 00:07:24,451 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [17] total 19 [2021-11-17 00:07:24,451 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435286616] [2021-11-17 00:07:24,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 00:07:24,451 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-17 00:07:24,451 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 00:07:24,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-17 00:07:24,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=300, Unknown=0, NotChecked=0, Total=342 [2021-11-17 00:07:24,452 INFO L87 Difference]: Start difference. First operand 1950 states and 2584 transitions. Second operand has 6 states, 6 states have (on average 43.166666666666664) internal successors, (259), 5 states have internal predecessors, (259), 3 states have call successors, (50), 2 states have call predecessors, (50), 3 states have return successors, (49), 4 states have call predecessors, (49), 3 states have call successors, (49) [2021-11-17 00:07:26,520 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:07:28,532 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:07:30,614 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:07:30,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 00:07:30,659 INFO L93 Difference]: Finished difference Result 4828 states and 6575 transitions. [2021-11-17 00:07:30,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-17 00:07:30,670 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 43.166666666666664) internal successors, (259), 5 states have internal predecessors, (259), 3 states have call successors, (50), 2 states have call predecessors, (50), 3 states have return successors, (49), 4 states have call predecessors, (49), 3 states have call successors, (49) Word has length 451 [2021-11-17 00:07:30,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 00:07:30,677 INFO L225 Difference]: With dead ends: 4828 [2021-11-17 00:07:30,677 INFO L226 Difference]: Without dead ends: 2881 [2021-11-17 00:07:30,681 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 577 GetRequests, 559 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=334, Unknown=0, NotChecked=0, Total=380 [2021-11-17 00:07:30,682 INFO L933 BasicCegarLoop]: 1829 mSDtfsCounter, 431 mSDsluCounter, 6751 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 6 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 547 SdHoareTripleChecker+Valid, 8580 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time [2021-11-17 00:07:30,682 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [547 Valid, 8580 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 27 Invalid, 3 Unknown, 0 Unchecked, 6.1s Time] [2021-11-17 00:07:30,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2881 states. [2021-11-17 00:07:30,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2881 to 1950. [2021-11-17 00:07:30,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1950 states, 1459 states have (on average 1.2200137080191913) internal successors, (1780), 1481 states have internal predecessors, (1780), 386 states have call successors, (386), 102 states have call predecessors, (386), 104 states have return successors, (418), 374 states have call predecessors, (418), 378 states have call successors, (418) [2021-11-17 00:07:30,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1950 states to 1950 states and 2584 transitions. [2021-11-17 00:07:30,762 INFO L78 Accepts]: Start accepts. Automaton has 1950 states and 2584 transitions. Word has length 451 [2021-11-17 00:07:30,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 00:07:30,763 INFO L470 AbstractCegarLoop]: Abstraction has 1950 states and 2584 transitions. [2021-11-17 00:07:30,763 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 43.166666666666664) internal successors, (259), 5 states have internal predecessors, (259), 3 states have call successors, (50), 2 states have call predecessors, (50), 3 states have return successors, (49), 4 states have call predecessors, (49), 3 states have call successors, (49) [2021-11-17 00:07:30,763 INFO L276 IsEmpty]: Start isEmpty. Operand 1950 states and 2584 transitions. [2021-11-17 00:07:30,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 464 [2021-11-17 00:07:30,767 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 00:07:30,767 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 00:07:30,788 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2021-11-17 00:07:30,987 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-17 00:07:30,987 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 00:07:30,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 00:07:30,988 INFO L85 PathProgramCache]: Analyzing trace with hash -1472006654, now seen corresponding path program 1 times [2021-11-17 00:07:30,988 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 00:07:30,988 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464933574] [2021-11-17 00:07:30,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 00:07:30,988 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 00:07:31,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:07:31,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-11-17 00:07:31,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:07:31,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:07:31,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:07:31,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:07:31,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:07:31,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-11-17 00:07:31,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:07:31,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-11-17 00:07:31,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:07:31,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-11-17 00:07:31,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:07:31,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-11-17 00:07:31,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:07:31,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-11-17 00:07:31,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:07:31,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-11-17 00:07:31,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:07:31,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-11-17 00:07:31,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:07:31,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-11-17 00:07:31,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:07:31,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-11-17 00:07:31,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:07:31,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:07:31,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:07:31,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-11-17 00:07:31,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:07:31,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-11-17 00:07:31,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:07:31,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-11-17 00:07:31,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:07:31,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-11-17 00:07:31,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:07:31,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-17 00:07:31,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:07:31,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-11-17 00:07:31,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:07:31,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-11-17 00:07:31,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:07:31,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-11-17 00:07:31,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:07:31,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-11-17 00:07:31,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:07:31,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-17 00:07:31,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:07:31,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-11-17 00:07:31,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:07:31,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-11-17 00:07:31,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:07:31,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-11-17 00:07:31,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:07:31,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:07:31,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:07:31,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-11-17 00:07:31,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:07:31,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-11-17 00:07:31,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:07:31,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-11-17 00:07:31,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:07:31,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2021-11-17 00:07:31,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:07:31,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2021-11-17 00:07:31,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:07:31,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2021-11-17 00:07:31,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:07:31,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2021-11-17 00:07:31,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:07:31,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2021-11-17 00:07:31,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:07:31,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 00:07:31,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:07:31,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:07:31,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:07:31,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-11-17 00:07:31,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:07:31,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-11-17 00:07:31,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:07:31,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-11-17 00:07:31,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:07:31,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-11-17 00:07:31,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:07:31,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-11-17 00:07:31,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:07:31,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-11-17 00:07:31,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:07:31,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 363 [2021-11-17 00:07:31,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:07:31,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:07:31,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:07:31,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 376 [2021-11-17 00:07:31,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:07:31,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 381 [2021-11-17 00:07:31,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:07:31,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 386 [2021-11-17 00:07:31,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:07:31,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2021-11-17 00:07:31,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:07:31,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 397 [2021-11-17 00:07:31,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:07:31,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-17 00:07:31,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:07:31,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-17 00:07:31,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:07:31,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 423 [2021-11-17 00:07:31,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:07:31,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 00:07:31,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:07:31,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 436 [2021-11-17 00:07:31,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:07:31,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 440 [2021-11-17 00:07:31,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:07:31,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 446 [2021-11-17 00:07:31,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:07:31,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 452 [2021-11-17 00:07:31,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:07:31,499 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 236 trivial. 0 not checked. [2021-11-17 00:07:31,500 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 00:07:31,500 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [464933574] [2021-11-17 00:07:31,500 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [464933574] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 00:07:31,500 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 00:07:31,500 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-17 00:07:31,500 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804142188] [2021-11-17 00:07:31,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 00:07:31,501 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-17 00:07:31,501 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 00:07:31,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-17 00:07:31,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2021-11-17 00:07:31,502 INFO L87 Difference]: Start difference. First operand 1950 states and 2584 transitions. Second operand has 13 states, 13 states have (on average 19.692307692307693) internal successors, (256), 5 states have internal predecessors, (256), 2 states have call successors, (50), 9 states have call predecessors, (50), 3 states have return successors, (49), 3 states have call predecessors, (49), 2 states have call successors, (49) [2021-11-17 00:07:38,123 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:07:40,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 00:07:40,780 INFO L93 Difference]: Finished difference Result 2096 states and 2821 transitions. [2021-11-17 00:07:40,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-17 00:07:40,780 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 19.692307692307693) internal successors, (256), 5 states have internal predecessors, (256), 2 states have call successors, (50), 9 states have call predecessors, (50), 3 states have return successors, (49), 3 states have call predecessors, (49), 2 states have call successors, (49) Word has length 463 [2021-11-17 00:07:40,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 00:07:40,781 INFO L225 Difference]: With dead ends: 2096 [2021-11-17 00:07:40,781 INFO L226 Difference]: Without dead ends: 0 [2021-11-17 00:07:40,784 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=123, Invalid=429, Unknown=0, NotChecked=0, Total=552 [2021-11-17 00:07:40,784 INFO L933 BasicCegarLoop]: 1086 mSDtfsCounter, 1046 mSDsluCounter, 5502 mSDsCounter, 0 mSdLazyCounter, 3904 mSolverCounterSat, 867 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1063 SdHoareTripleChecker+Valid, 6588 SdHoareTripleChecker+Invalid, 4772 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 867 IncrementalHoareTripleChecker+Valid, 3904 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.1s IncrementalHoareTripleChecker+Time [2021-11-17 00:07:40,784 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1063 Valid, 6588 Invalid, 4772 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [867 Valid, 3904 Invalid, 1 Unknown, 0 Unchecked, 9.1s Time] [2021-11-17 00:07:40,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-11-17 00:07:40,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-11-17 00:07:40,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-17 00:07:40,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-11-17 00:07:40,785 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 463 [2021-11-17 00:07:40,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 00:07:40,785 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-17 00:07:40,785 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 19.692307692307693) internal successors, (256), 5 states have internal predecessors, (256), 2 states have call successors, (50), 9 states have call predecessors, (50), 3 states have return successors, (49), 3 states have call predecessors, (49), 2 states have call successors, (49) [2021-11-17 00:07:40,785 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-11-17 00:07:40,785 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-17 00:07:40,787 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-17 00:07:40,787 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-11-17 00:07:40,789 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-11-17 00:08:21,760 WARN L227 SmtUtils]: Spent 39.46s on a formula simplification that was a NOOP. DAG size: 73 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2021-11-17 00:09:00,820 WARN L227 SmtUtils]: Spent 39.05s on a formula simplification that was a NOOP. DAG size: 73 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) Killed by 15