./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-validator-v0.6/linux-stable-a9e7fb5-1-32_7a-drivers--media--rc--imon.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c3fed411 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-validator-v0.6/linux-stable-a9e7fb5-1-32_7a-drivers--media--rc--imon.ko-entry_point.cil.out.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash c3c8f5f42e93f38ff45b5fb218b90423c4fa8214795cc0db5e91266a2717c97b --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-16 04:08:22,164 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-16 04:08:22,165 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-16 04:08:22,218 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-16 04:08:22,219 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-16 04:08:22,221 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-16 04:08:22,223 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-16 04:08:22,225 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-16 04:08:22,226 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-16 04:08:22,230 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-16 04:08:22,231 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-16 04:08:22,232 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-16 04:08:22,232 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-16 04:08:22,234 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-16 04:08:22,235 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-16 04:08:22,236 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-16 04:08:22,237 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-16 04:08:22,238 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-16 04:08:22,242 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-16 04:08:22,245 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-16 04:08:22,246 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-16 04:08:22,246 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-16 04:08:22,248 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-16 04:08:22,248 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-16 04:08:22,252 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-16 04:08:22,254 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-16 04:08:22,254 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-16 04:08:22,254 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-16 04:08:22,255 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-16 04:08:22,256 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-16 04:08:22,256 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-16 04:08:22,257 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-16 04:08:22,258 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-16 04:08:22,258 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-16 04:08:22,259 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-16 04:08:22,259 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-16 04:08:22,260 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-16 04:08:22,260 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-16 04:08:22,260 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-16 04:08:22,261 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-16 04:08:22,261 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-16 04:08:22,262 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-16 04:08:22,286 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-16 04:08:22,286 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-16 04:08:22,287 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-16 04:08:22,287 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-16 04:08:22,287 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-16 04:08:22,287 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-16 04:08:22,288 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-16 04:08:22,288 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-16 04:08:22,288 INFO L138 SettingsManager]: * Use SBE=true [2021-12-16 04:08:22,288 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-16 04:08:22,289 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-16 04:08:22,289 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-16 04:08:22,289 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-16 04:08:22,289 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-16 04:08:22,289 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-16 04:08:22,290 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-16 04:08:22,290 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-16 04:08:22,290 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-16 04:08:22,290 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-16 04:08:22,290 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-16 04:08:22,290 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-16 04:08:22,290 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-16 04:08:22,291 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-16 04:08:22,291 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-16 04:08:22,291 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-16 04:08:22,291 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-16 04:08:22,291 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-16 04:08:22,291 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-16 04:08:22,291 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-16 04:08:22,291 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-16 04:08:22,292 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-16 04:08:22,292 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c3c8f5f42e93f38ff45b5fb218b90423c4fa8214795cc0db5e91266a2717c97b [2021-12-16 04:08:22,473 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-16 04:08:22,497 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-16 04:08:22,499 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-16 04:08:22,499 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-16 04:08:22,500 INFO L275 PluginConnector]: CDTParser initialized [2021-12-16 04:08:22,501 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-validator-v0.6/linux-stable-a9e7fb5-1-32_7a-drivers--media--rc--imon.ko-entry_point.cil.out.i [2021-12-16 04:08:22,539 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/03e35b3cb/2017006d01ba4bd99d7a50252bb8671a/FLAGfb026d11b [2021-12-16 04:08:23,069 INFO L306 CDTParser]: Found 1 translation units. [2021-12-16 04:08:23,069 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-validator-v0.6/linux-stable-a9e7fb5-1-32_7a-drivers--media--rc--imon.ko-entry_point.cil.out.i [2021-12-16 04:08:23,104 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/03e35b3cb/2017006d01ba4bd99d7a50252bb8671a/FLAGfb026d11b [2021-12-16 04:08:23,301 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/03e35b3cb/2017006d01ba4bd99d7a50252bb8671a [2021-12-16 04:08:23,304 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-16 04:08:23,306 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-16 04:08:23,307 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-16 04:08:23,307 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-16 04:08:23,309 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-16 04:08:23,310 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 04:08:23" (1/1) ... [2021-12-16 04:08:23,311 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@61e33d7d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:08:23, skipping insertion in model container [2021-12-16 04:08:23,311 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 04:08:23" (1/1) ... [2021-12-16 04:08:23,315 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-16 04:08:23,388 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-16 04:08:23,891 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-validator-v0.6/linux-stable-a9e7fb5-1-32_7a-drivers--media--rc--imon.ko-entry_point.cil.out.i[98402,98415] [2021-12-16 04:08:24,317 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 04:08:24,332 INFO L203 MainTranslator]: Completed pre-run [2021-12-16 04:08:24,371 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-validator-v0.6/linux-stable-a9e7fb5-1-32_7a-drivers--media--rc--imon.ko-entry_point.cil.out.i[98402,98415] [2021-12-16 04:08:24,509 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 04:08:24,575 INFO L208 MainTranslator]: Completed translation [2021-12-16 04:08:24,576 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:08:24 WrapperNode [2021-12-16 04:08:24,576 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-16 04:08:24,577 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-16 04:08:24,578 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-16 04:08:24,578 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-16 04:08:24,583 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:08:24" (1/1) ... [2021-12-16 04:08:24,652 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:08:24" (1/1) ... [2021-12-16 04:08:24,760 INFO L137 Inliner]: procedures = 256, calls = 2394, calls flagged for inlining = 116, calls inlined = 95, statements flattened = 3925 [2021-12-16 04:08:24,760 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-16 04:08:24,761 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-16 04:08:24,761 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-16 04:08:24,761 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-16 04:08:24,767 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:08:24" (1/1) ... [2021-12-16 04:08:24,767 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:08:24" (1/1) ... [2021-12-16 04:08:24,801 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:08:24" (1/1) ... [2021-12-16 04:08:24,801 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:08:24" (1/1) ... [2021-12-16 04:08:24,860 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:08:24" (1/1) ... [2021-12-16 04:08:24,872 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:08:24" (1/1) ... [2021-12-16 04:08:24,884 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:08:24" (1/1) ... [2021-12-16 04:08:24,899 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-16 04:08:24,900 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-16 04:08:24,900 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-16 04:08:24,900 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-16 04:08:24,901 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:08:24" (1/1) ... [2021-12-16 04:08:24,912 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-16 04:08:24,920 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 04:08:24,936 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-16 04:08:24,954 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-16 04:08:24,970 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_strcpy [2021-12-16 04:08:24,971 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_strcpy [2021-12-16 04:08:24,971 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_intfdata [2021-12-16 04:08:24,971 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_intfdata [2021-12-16 04:08:24,971 INFO L130 BoogieDeclarations]: Found specification of procedure usb_submit_urb [2021-12-16 04:08:24,971 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_submit_urb [2021-12-16 04:08:24,971 INFO L130 BoogieDeclarations]: Found specification of procedure __xchg_wrong_size [2021-12-16 04:08:24,971 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-12-16 04:08:24,971 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-12-16 04:08:24,971 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-12-16 04:08:24,972 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-12-16 04:08:24,972 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_dev [2021-12-16 04:08:24,972 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_dev [2021-12-16 04:08:24,972 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2021-12-16 04:08:24,972 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2021-12-16 04:08:24,972 INFO L130 BoogieDeclarations]: Found specification of procedure usb_make_path [2021-12-16 04:08:24,972 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_make_path [2021-12-16 04:08:24,972 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-12-16 04:08:24,973 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-12-16 04:08:24,973 INFO L130 BoogieDeclarations]: Found specification of procedure send_packet [2021-12-16 04:08:24,973 INFO L138 BoogieDeclarations]: Found implementation of procedure send_packet [2021-12-16 04:08:24,973 INFO L130 BoogieDeclarations]: Found specification of procedure strlcat [2021-12-16 04:08:24,973 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcat [2021-12-16 04:08:24,973 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-12-16 04:08:24,973 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-12-16 04:08:24,973 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-12-16 04:08:24,973 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-12-16 04:08:24,974 INFO L130 BoogieDeclarations]: Found specification of procedure imon_disconnect [2021-12-16 04:08:24,974 INFO L138 BoogieDeclarations]: Found implementation of procedure imon_disconnect [2021-12-16 04:08:24,974 INFO L130 BoogieDeclarations]: Found specification of procedure usb_deregister_dev [2021-12-16 04:08:24,974 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_deregister_dev [2021-12-16 04:08:24,974 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_lock_of_imon_context [2021-12-16 04:08:24,974 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_lock_of_imon_context [2021-12-16 04:08:24,974 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-16 04:08:24,974 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-16 04:08:24,974 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2021-12-16 04:08:24,975 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2021-12-16 04:08:24,975 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-12-16 04:08:24,975 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-12-16 04:08:24,975 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_driver_lock [2021-12-16 04:08:24,975 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_driver_lock [2021-12-16 04:08:24,975 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-16 04:08:24,975 INFO L130 BoogieDeclarations]: Found specification of procedure input_event [2021-12-16 04:08:24,975 INFO L138 BoogieDeclarations]: Found implementation of procedure input_event [2021-12-16 04:08:24,976 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-16 04:08:24,976 INFO L130 BoogieDeclarations]: Found specification of procedure input_allocate_device [2021-12-16 04:08:24,976 INFO L138 BoogieDeclarations]: Found implementation of procedure input_allocate_device [2021-12-16 04:08:24,976 INFO L130 BoogieDeclarations]: Found specification of procedure dev_set_drvdata [2021-12-16 04:08:24,976 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_set_drvdata [2021-12-16 04:08:24,976 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-16 04:08:24,976 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-16 04:08:24,976 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2021-12-16 04:08:24,976 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2021-12-16 04:08:24,977 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2021-12-16 04:08:24,977 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2021-12-16 04:08:24,977 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_intfdata [2021-12-16 04:08:24,977 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_intfdata [2021-12-16 04:08:24,977 INFO L130 BoogieDeclarations]: Found specification of procedure input_set_drvdata [2021-12-16 04:08:24,977 INFO L138 BoogieDeclarations]: Found implementation of procedure input_set_drvdata [2021-12-16 04:08:24,977 INFO L130 BoogieDeclarations]: Found specification of procedure input_report_key [2021-12-16 04:08:24,977 INFO L138 BoogieDeclarations]: Found implementation of procedure input_report_key [2021-12-16 04:08:24,978 INFO L130 BoogieDeclarations]: Found specification of procedure usb_alloc_urb [2021-12-16 04:08:24,978 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_alloc_urb [2021-12-16 04:08:24,978 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-12-16 04:08:24,978 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2021-12-16 04:08:24,978 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2021-12-16 04:08:24,978 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2021-12-16 04:08:24,978 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2021-12-16 04:08:24,978 INFO L130 BoogieDeclarations]: Found specification of procedure input_report_abs [2021-12-16 04:08:24,978 INFO L138 BoogieDeclarations]: Found implementation of procedure input_report_abs [2021-12-16 04:08:24,979 INFO L130 BoogieDeclarations]: Found specification of procedure dev_get_drvdata [2021-12-16 04:08:24,979 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_get_drvdata [2021-12-16 04:08:24,979 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-12-16 04:08:24,979 INFO L130 BoogieDeclarations]: Found specification of procedure input_free_device [2021-12-16 04:08:24,979 INFO L138 BoogieDeclarations]: Found implementation of procedure input_free_device [2021-12-16 04:08:24,979 INFO L130 BoogieDeclarations]: Found specification of procedure sysfs_create_group [2021-12-16 04:08:24,979 INFO L138 BoogieDeclarations]: Found implementation of procedure sysfs_create_group [2021-12-16 04:08:24,979 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-16 04:08:24,979 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer_sync [2021-12-16 04:08:24,980 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer_sync [2021-12-16 04:08:24,980 INFO L130 BoogieDeclarations]: Found specification of procedure sysfs_remove_group [2021-12-16 04:08:24,980 INFO L138 BoogieDeclarations]: Found implementation of procedure sysfs_remove_group [2021-12-16 04:08:24,980 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-12-16 04:08:24,980 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-12-16 04:08:24,980 INFO L130 BoogieDeclarations]: Found specification of procedure lcd_write [2021-12-16 04:08:24,980 INFO L138 BoogieDeclarations]: Found implementation of procedure lcd_write [2021-12-16 04:08:24,980 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2021-12-16 04:08:24,980 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2021-12-16 04:08:24,981 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_urb [2021-12-16 04:08:24,981 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_urb [2021-12-16 04:08:24,981 INFO L130 BoogieDeclarations]: Found specification of procedure usb_fill_int_urb [2021-12-16 04:08:24,981 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_fill_int_urb [2021-12-16 04:08:24,981 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-12-16 04:08:24,981 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-12-16 04:08:24,981 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-16 04:08:24,981 INFO L130 BoogieDeclarations]: Found specification of procedure usb_to_input_id [2021-12-16 04:08:24,981 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_to_input_id [2021-12-16 04:08:24,982 INFO L130 BoogieDeclarations]: Found specification of procedure input_sync [2021-12-16 04:08:24,982 INFO L138 BoogieDeclarations]: Found implementation of procedure input_sync [2021-12-16 04:08:24,982 INFO L130 BoogieDeclarations]: Found specification of procedure noop_llseek [2021-12-16 04:08:24,982 INFO L138 BoogieDeclarations]: Found implementation of procedure noop_llseek [2021-12-16 04:08:24,982 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-12-16 04:08:24,982 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-12-16 04:08:24,982 INFO L130 BoogieDeclarations]: Found specification of procedure free_imon_context [2021-12-16 04:08:24,982 INFO L138 BoogieDeclarations]: Found implementation of procedure free_imon_context [2021-12-16 04:08:24,982 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-16 04:08:24,983 INFO L130 BoogieDeclarations]: Found specification of procedure disable_suitable_timer_1 [2021-12-16 04:08:24,983 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_suitable_timer_1 [2021-12-16 04:08:24,983 INFO L130 BoogieDeclarations]: Found specification of procedure input_register_device [2021-12-16 04:08:24,983 INFO L138 BoogieDeclarations]: Found implementation of procedure input_register_device [2021-12-16 04:08:24,983 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_lock_of_imon_context [2021-12-16 04:08:24,983 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_lock_of_imon_context [2021-12-16 04:08:24,983 INFO L130 BoogieDeclarations]: Found specification of procedure copy_from_user [2021-12-16 04:08:24,983 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_from_user [2021-12-16 04:08:24,983 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-16 04:08:24,984 INFO L130 BoogieDeclarations]: Found specification of procedure vfd_write [2021-12-16 04:08:24,984 INFO L138 BoogieDeclarations]: Found implementation of procedure vfd_write [2021-12-16 04:08:24,984 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-16 04:08:24,984 INFO L130 BoogieDeclarations]: Found specification of procedure input_set_abs_params [2021-12-16 04:08:24,984 INFO L138 BoogieDeclarations]: Found implementation of procedure input_set_abs_params [2021-12-16 04:08:24,984 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-12-16 04:08:24,984 INFO L130 BoogieDeclarations]: Found specification of procedure reg_timer_1 [2021-12-16 04:08:24,984 INFO L138 BoogieDeclarations]: Found implementation of procedure reg_timer_1 [2021-12-16 04:08:24,985 INFO L130 BoogieDeclarations]: Found specification of procedure display_close [2021-12-16 04:08:24,985 INFO L138 BoogieDeclarations]: Found implementation of procedure display_close [2021-12-16 04:08:24,985 INFO L130 BoogieDeclarations]: Found specification of procedure usb_register_dev [2021-12-16 04:08:24,985 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_register_dev [2021-12-16 04:08:24,985 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_urb [2021-12-16 04:08:24,985 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_urb [2021-12-16 04:08:24,985 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_driver_lock [2021-12-16 04:08:24,985 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_driver_lock [2021-12-16 04:08:24,985 INFO L130 BoogieDeclarations]: Found specification of procedure input_unregister_device [2021-12-16 04:08:24,986 INFO L138 BoogieDeclarations]: Found implementation of procedure input_unregister_device [2021-12-16 04:08:24,986 INFO L130 BoogieDeclarations]: Found specification of procedure imon_find_endpoints [2021-12-16 04:08:24,986 INFO L138 BoogieDeclarations]: Found implementation of procedure imon_find_endpoints [2021-12-16 04:08:24,986 INFO L130 BoogieDeclarations]: Found specification of procedure display_open [2021-12-16 04:08:24,986 INFO L138 BoogieDeclarations]: Found implementation of procedure display_open [2021-12-16 04:08:24,986 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-16 04:08:24,986 INFO L130 BoogieDeclarations]: Found specification of procedure interface_to_usbdev [2021-12-16 04:08:24,986 INFO L138 BoogieDeclarations]: Found implementation of procedure interface_to_usbdev [2021-12-16 04:08:24,986 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-16 04:08:24,986 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-16 04:08:25,451 INFO L236 CfgBuilder]: Building ICFG [2021-12-16 04:08:25,455 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-16 04:08:25,795 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-12-16 04:08:28,267 INFO L277 CfgBuilder]: Performing block encoding [2021-12-16 04:08:28,276 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-16 04:08:28,276 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-16 04:08:28,278 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 04:08:28 BoogieIcfgContainer [2021-12-16 04:08:28,279 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-16 04:08:28,280 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-16 04:08:28,280 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-16 04:08:28,282 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-16 04:08:28,282 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 04:08:23" (1/3) ... [2021-12-16 04:08:28,283 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68310aa3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 04:08:28, skipping insertion in model container [2021-12-16 04:08:28,283 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:08:24" (2/3) ... [2021-12-16 04:08:28,283 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68310aa3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 04:08:28, skipping insertion in model container [2021-12-16 04:08:28,283 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 04:08:28" (3/3) ... [2021-12-16 04:08:28,304 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-stable-a9e7fb5-1-32_7a-drivers--media--rc--imon.ko-entry_point.cil.out.i [2021-12-16 04:08:28,308 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-16 04:08:28,308 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-16 04:08:28,347 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-16 04:08:28,352 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-16 04:08:28,352 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-16 04:08:28,378 INFO L276 IsEmpty]: Start isEmpty. Operand has 1108 states, 771 states have (on average 1.3540856031128405) internal successors, (1044), 793 states have internal predecessors, (1044), 274 states have call successors, (274), 62 states have call predecessors, (274), 61 states have return successors, (267), 266 states have call predecessors, (267), 267 states have call successors, (267) [2021-12-16 04:08:28,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-12-16 04:08:28,385 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 04:08:28,386 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 04:08:28,386 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 04:08:28,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 04:08:28,390 INFO L85 PathProgramCache]: Analyzing trace with hash -958231293, now seen corresponding path program 1 times [2021-12-16 04:08:28,395 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 04:08:28,395 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [545594183] [2021-12-16 04:08:28,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 04:08:28,396 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 04:08:28,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:08:28,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 04:08:28,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:08:28,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-16 04:08:28,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:08:28,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-16 04:08:28,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:08:28,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-16 04:08:28,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:08:28,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-16 04:08:28,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:08:28,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-16 04:08:28,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:08:28,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-16 04:08:28,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:08:28,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-16 04:08:28,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:08:28,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-16 04:08:28,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:08:28,859 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2021-12-16 04:08:28,859 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 04:08:28,859 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [545594183] [2021-12-16 04:08:28,860 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [545594183] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 04:08:28,860 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 04:08:28,860 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-16 04:08:28,861 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671700753] [2021-12-16 04:08:28,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 04:08:28,864 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-16 04:08:28,865 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 04:08:28,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-16 04:08:28,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-16 04:08:28,908 INFO L87 Difference]: Start difference. First operand has 1108 states, 771 states have (on average 1.3540856031128405) internal successors, (1044), 793 states have internal predecessors, (1044), 274 states have call successors, (274), 62 states have call predecessors, (274), 61 states have return successors, (267), 266 states have call predecessors, (267), 267 states have call successors, (267) Second operand has 4 states, 4 states have (on average 6.75) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2021-12-16 04:08:32,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 04:08:32,584 INFO L93 Difference]: Finished difference Result 3294 states and 4962 transitions. [2021-12-16 04:08:32,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-16 04:08:32,586 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) Word has length 72 [2021-12-16 04:08:32,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 04:08:32,605 INFO L225 Difference]: With dead ends: 3294 [2021-12-16 04:08:32,605 INFO L226 Difference]: Without dead ends: 2166 [2021-12-16 04:08:32,614 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-16 04:08:32,617 INFO L933 BasicCegarLoop]: 1779 mSDtfsCounter, 1603 mSDsluCounter, 2126 mSDsCounter, 0 mSdLazyCounter, 901 mSolverCounterSat, 600 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1804 SdHoareTripleChecker+Valid, 3905 SdHoareTripleChecker+Invalid, 1501 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 600 IncrementalHoareTripleChecker+Valid, 901 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2021-12-16 04:08:32,618 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1804 Valid, 3905 Invalid, 1501 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [600 Valid, 901 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2021-12-16 04:08:32,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2166 states. [2021-12-16 04:08:32,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2166 to 2078. [2021-12-16 04:08:32,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2078 states, 1458 states have (on average 1.3415637860082306) internal successors, (1956), 1479 states have internal predecessors, (1956), 500 states have call successors, (500), 120 states have call predecessors, (500), 119 states have return successors, (493), 490 states have call predecessors, (493), 493 states have call successors, (493) [2021-12-16 04:08:32,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2078 states to 2078 states and 2949 transitions. [2021-12-16 04:08:32,799 INFO L78 Accepts]: Start accepts. Automaton has 2078 states and 2949 transitions. Word has length 72 [2021-12-16 04:08:32,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 04:08:32,800 INFO L470 AbstractCegarLoop]: Abstraction has 2078 states and 2949 transitions. [2021-12-16 04:08:32,800 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2021-12-16 04:08:32,800 INFO L276 IsEmpty]: Start isEmpty. Operand 2078 states and 2949 transitions. [2021-12-16 04:08:32,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-12-16 04:08:32,808 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 04:08:32,808 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 04:08:32,809 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-16 04:08:32,809 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 04:08:32,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 04:08:32,812 INFO L85 PathProgramCache]: Analyzing trace with hash -1149281951, now seen corresponding path program 1 times [2021-12-16 04:08:32,812 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 04:08:32,812 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651047941] [2021-12-16 04:08:32,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 04:08:32,812 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 04:08:32,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:08:32,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 04:08:32,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:08:32,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-16 04:08:32,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:08:32,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-16 04:08:32,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:08:32,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-16 04:08:32,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:08:32,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-16 04:08:32,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:08:32,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-16 04:08:32,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:08:33,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-16 04:08:33,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:08:33,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-16 04:08:33,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:08:33,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-16 04:08:33,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:08:33,015 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2021-12-16 04:08:33,016 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 04:08:33,016 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651047941] [2021-12-16 04:08:33,016 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [651047941] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 04:08:33,016 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 04:08:33,016 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-16 04:08:33,017 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934551948] [2021-12-16 04:08:33,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 04:08:33,018 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-16 04:08:33,018 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 04:08:33,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-16 04:08:33,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-16 04:08:33,019 INFO L87 Difference]: Start difference. First operand 2078 states and 2949 transitions. Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2021-12-16 04:08:36,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 04:08:36,256 INFO L93 Difference]: Finished difference Result 5218 states and 7472 transitions. [2021-12-16 04:08:36,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-16 04:08:36,257 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) Word has length 73 [2021-12-16 04:08:36,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 04:08:36,270 INFO L225 Difference]: With dead ends: 5218 [2021-12-16 04:08:36,270 INFO L226 Difference]: Without dead ends: 3163 [2021-12-16 04:08:36,276 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-16 04:08:36,277 INFO L933 BasicCegarLoop]: 1738 mSDtfsCounter, 937 mSDsluCounter, 2136 mSDsCounter, 0 mSdLazyCounter, 800 mSolverCounterSat, 428 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1036 SdHoareTripleChecker+Valid, 3874 SdHoareTripleChecker+Invalid, 1228 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 428 IncrementalHoareTripleChecker+Valid, 800 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2021-12-16 04:08:36,278 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1036 Valid, 3874 Invalid, 1228 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [428 Valid, 800 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2021-12-16 04:08:36,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3163 states. [2021-12-16 04:08:36,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3163 to 3033. [2021-12-16 04:08:36,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3033 states, 2140 states have (on average 1.347663551401869) internal successors, (2884), 2161 states have internal predecessors, (2884), 707 states have call successors, (707), 186 states have call predecessors, (707), 185 states have return successors, (700), 697 states have call predecessors, (700), 700 states have call successors, (700) [2021-12-16 04:08:36,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3033 states to 3033 states and 4291 transitions. [2021-12-16 04:08:36,355 INFO L78 Accepts]: Start accepts. Automaton has 3033 states and 4291 transitions. Word has length 73 [2021-12-16 04:08:36,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 04:08:36,356 INFO L470 AbstractCegarLoop]: Abstraction has 3033 states and 4291 transitions. [2021-12-16 04:08:36,356 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2021-12-16 04:08:36,356 INFO L276 IsEmpty]: Start isEmpty. Operand 3033 states and 4291 transitions. [2021-12-16 04:08:36,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-12-16 04:08:36,357 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 04:08:36,357 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 04:08:36,358 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-16 04:08:36,358 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 04:08:36,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 04:08:36,358 INFO L85 PathProgramCache]: Analyzing trace with hash -2117811177, now seen corresponding path program 1 times [2021-12-16 04:08:36,358 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 04:08:36,359 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141755385] [2021-12-16 04:08:36,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 04:08:36,359 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 04:08:36,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:08:36,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 04:08:36,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:08:36,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-16 04:08:36,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:08:36,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-16 04:08:36,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:08:36,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-16 04:08:36,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:08:36,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-16 04:08:36,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:08:36,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-16 04:08:36,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:08:36,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-16 04:08:36,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:08:36,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-16 04:08:36,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:08:36,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-16 04:08:36,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:08:36,554 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2021-12-16 04:08:36,555 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 04:08:36,555 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1141755385] [2021-12-16 04:08:36,555 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1141755385] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 04:08:36,555 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 04:08:36,555 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-16 04:08:36,555 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917137577] [2021-12-16 04:08:36,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 04:08:36,556 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-16 04:08:36,556 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 04:08:36,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-16 04:08:36,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-16 04:08:36,557 INFO L87 Difference]: Start difference. First operand 3033 states and 4291 transitions. Second operand has 4 states, 4 states have (on average 7.75) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2021-12-16 04:08:40,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 04:08:40,035 INFO L93 Difference]: Finished difference Result 9200 states and 13168 transitions. [2021-12-16 04:08:40,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-16 04:08:40,036 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) Word has length 74 [2021-12-16 04:08:40,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 04:08:40,091 INFO L225 Difference]: With dead ends: 9200 [2021-12-16 04:08:40,091 INFO L226 Difference]: Without dead ends: 6197 [2021-12-16 04:08:40,101 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-16 04:08:40,104 INFO L933 BasicCegarLoop]: 1863 mSDtfsCounter, 1596 mSDsluCounter, 2180 mSDsCounter, 0 mSdLazyCounter, 913 mSolverCounterSat, 576 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1788 SdHoareTripleChecker+Valid, 4043 SdHoareTripleChecker+Invalid, 1489 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 576 IncrementalHoareTripleChecker+Valid, 913 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2021-12-16 04:08:40,107 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1788 Valid, 4043 Invalid, 1489 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [576 Valid, 913 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2021-12-16 04:08:40,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6197 states. [2021-12-16 04:08:40,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6197 to 5963. [2021-12-16 04:08:40,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5963 states, 4212 states have (on average 1.3480531813865146) internal successors, (5678), 4247 states have internal predecessors, (5678), 1381 states have call successors, (1381), 370 states have call predecessors, (1381), 369 states have return successors, (1374), 1369 states have call predecessors, (1374), 1374 states have call successors, (1374) [2021-12-16 04:08:40,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5963 states to 5963 states and 8433 transitions. [2021-12-16 04:08:40,293 INFO L78 Accepts]: Start accepts. Automaton has 5963 states and 8433 transitions. Word has length 74 [2021-12-16 04:08:40,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 04:08:40,293 INFO L470 AbstractCegarLoop]: Abstraction has 5963 states and 8433 transitions. [2021-12-16 04:08:40,294 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2021-12-16 04:08:40,294 INFO L276 IsEmpty]: Start isEmpty. Operand 5963 states and 8433 transitions. [2021-12-16 04:08:40,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-12-16 04:08:40,295 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 04:08:40,295 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 04:08:40,295 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-16 04:08:40,295 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 04:08:40,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 04:08:40,296 INFO L85 PathProgramCache]: Analyzing trace with hash -1121570177, now seen corresponding path program 1 times [2021-12-16 04:08:40,296 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 04:08:40,296 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1663282315] [2021-12-16 04:08:40,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 04:08:40,296 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 04:08:40,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:08:40,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 04:08:40,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:08:40,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-16 04:08:40,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:08:40,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-16 04:08:40,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:08:40,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-16 04:08:40,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:08:40,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-16 04:08:40,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:08:40,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-16 04:08:40,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:08:40,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-16 04:08:40,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:08:40,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-16 04:08:40,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:08:40,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-16 04:08:40,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:08:40,439 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2021-12-16 04:08:40,439 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 04:08:40,439 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1663282315] [2021-12-16 04:08:40,440 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1663282315] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 04:08:40,440 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 04:08:40,440 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-16 04:08:40,440 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594034140] [2021-12-16 04:08:40,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 04:08:40,441 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-16 04:08:40,441 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 04:08:40,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-16 04:08:40,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-16 04:08:40,441 INFO L87 Difference]: Start difference. First operand 5963 states and 8433 transitions. Second operand has 4 states, 4 states have (on average 8.25) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2021-12-16 04:08:44,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 04:08:44,111 INFO L93 Difference]: Finished difference Result 17466 states and 24920 transitions. [2021-12-16 04:08:44,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-16 04:08:44,111 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) Word has length 78 [2021-12-16 04:08:44,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 04:08:44,158 INFO L225 Difference]: With dead ends: 17466 [2021-12-16 04:08:44,159 INFO L226 Difference]: Without dead ends: 11533 [2021-12-16 04:08:44,178 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-16 04:08:44,179 INFO L933 BasicCegarLoop]: 1929 mSDtfsCounter, 1565 mSDsluCounter, 2181 mSDsCounter, 0 mSdLazyCounter, 921 mSolverCounterSat, 544 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1762 SdHoareTripleChecker+Valid, 4110 SdHoareTripleChecker+Invalid, 1465 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 544 IncrementalHoareTripleChecker+Valid, 921 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2021-12-16 04:08:44,179 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1762 Valid, 4110 Invalid, 1465 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [544 Valid, 921 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2021-12-16 04:08:44,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11533 states. [2021-12-16 04:08:44,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11533 to 11077. [2021-12-16 04:08:44,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11077 states, 7860 states have (on average 1.3465648854961831) internal successors, (10584), 7923 states have internal predecessors, (10584), 2521 states have call successors, (2521), 696 states have call predecessors, (2521), 695 states have return successors, (2514), 2505 states have call predecessors, (2514), 2514 states have call successors, (2514) [2021-12-16 04:08:44,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11077 states to 11077 states and 15619 transitions. [2021-12-16 04:08:44,544 INFO L78 Accepts]: Start accepts. Automaton has 11077 states and 15619 transitions. Word has length 78 [2021-12-16 04:08:44,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 04:08:44,545 INFO L470 AbstractCegarLoop]: Abstraction has 11077 states and 15619 transitions. [2021-12-16 04:08:44,545 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2021-12-16 04:08:44,546 INFO L276 IsEmpty]: Start isEmpty. Operand 11077 states and 15619 transitions. [2021-12-16 04:08:44,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-12-16 04:08:44,546 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 04:08:44,547 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 04:08:44,547 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-16 04:08:44,548 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 04:08:44,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 04:08:44,550 INFO L85 PathProgramCache]: Analyzing trace with hash 1933438737, now seen corresponding path program 1 times [2021-12-16 04:08:44,550 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 04:08:44,551 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1117299263] [2021-12-16 04:08:44,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 04:08:44,551 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 04:08:44,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:08:44,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 04:08:44,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:08:44,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-16 04:08:44,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:08:44,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-16 04:08:44,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:08:44,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-16 04:08:44,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:08:44,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-16 04:08:44,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:08:44,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-16 04:08:44,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:08:44,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-16 04:08:44,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:08:44,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-16 04:08:44,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:08:44,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-16 04:08:44,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:08:44,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-16 04:08:44,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:08:44,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:08:44,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:08:44,892 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2021-12-16 04:08:44,893 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 04:08:44,893 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1117299263] [2021-12-16 04:08:44,893 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1117299263] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 04:08:44,893 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 04:08:44,893 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-16 04:08:44,893 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711325745] [2021-12-16 04:08:44,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 04:08:44,894 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-16 04:08:44,894 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 04:08:44,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-16 04:08:44,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-16 04:08:44,895 INFO L87 Difference]: Start difference. First operand 11077 states and 15619 transitions. Second operand has 5 states, 5 states have (on average 7.4) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-16 04:08:49,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 04:08:49,280 INFO L93 Difference]: Finished difference Result 33076 states and 46844 transitions. [2021-12-16 04:08:49,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-16 04:08:49,280 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 85 [2021-12-16 04:08:49,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 04:08:49,358 INFO L225 Difference]: With dead ends: 33076 [2021-12-16 04:08:49,359 INFO L226 Difference]: Without dead ends: 22029 [2021-12-16 04:08:49,394 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-12-16 04:08:49,395 INFO L933 BasicCegarLoop]: 1981 mSDtfsCounter, 1566 mSDsluCounter, 3236 mSDsCounter, 0 mSdLazyCounter, 1448 mSolverCounterSat, 569 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1783 SdHoareTripleChecker+Valid, 5217 SdHoareTripleChecker+Invalid, 2017 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 569 IncrementalHoareTripleChecker+Valid, 1448 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2021-12-16 04:08:49,395 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1783 Valid, 5217 Invalid, 2017 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [569 Valid, 1448 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2021-12-16 04:08:49,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22029 states. [2021-12-16 04:08:49,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22029 to 21003. [2021-12-16 04:08:49,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21003 states, 14802 states have (on average 1.3364410214835833) internal successors, (19782), 14923 states have internal predecessors, (19782), 4811 states have call successors, (4811), 1390 states have call predecessors, (4811), 1389 states have return successors, (4804), 4785 states have call predecessors, (4804), 4804 states have call successors, (4804) [2021-12-16 04:08:50,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21003 states to 21003 states and 29397 transitions. [2021-12-16 04:08:50,059 INFO L78 Accepts]: Start accepts. Automaton has 21003 states and 29397 transitions. Word has length 85 [2021-12-16 04:08:50,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 04:08:50,060 INFO L470 AbstractCegarLoop]: Abstraction has 21003 states and 29397 transitions. [2021-12-16 04:08:50,060 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-16 04:08:50,060 INFO L276 IsEmpty]: Start isEmpty. Operand 21003 states and 29397 transitions. [2021-12-16 04:08:50,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-12-16 04:08:50,063 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 04:08:50,063 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 04:08:50,063 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-16 04:08:50,063 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 04:08:50,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 04:08:50,064 INFO L85 PathProgramCache]: Analyzing trace with hash -531508727, now seen corresponding path program 1 times [2021-12-16 04:08:50,064 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 04:08:50,064 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1326494244] [2021-12-16 04:08:50,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 04:08:50,064 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 04:08:50,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:08:50,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 04:08:50,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:08:50,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-16 04:08:50,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:08:50,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-16 04:08:50,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:08:50,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-16 04:08:50,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:08:50,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-16 04:08:50,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:08:50,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-16 04:08:50,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:08:50,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-16 04:08:50,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:08:50,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-16 04:08:50,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:08:50,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-16 04:08:50,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:08:50,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-16 04:08:50,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:08:50,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:08:50,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:08:50,223 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2021-12-16 04:08:50,224 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 04:08:50,224 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1326494244] [2021-12-16 04:08:50,224 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1326494244] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 04:08:50,224 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 04:08:50,224 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-16 04:08:50,224 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066809041] [2021-12-16 04:08:50,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 04:08:50,225 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-16 04:08:50,225 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 04:08:50,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-16 04:08:50,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-16 04:08:50,226 INFO L87 Difference]: Start difference. First operand 21003 states and 29397 transitions. Second operand has 5 states, 5 states have (on average 7.8) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-16 04:08:52,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 04:08:52,971 INFO L93 Difference]: Finished difference Result 63106 states and 88865 transitions. [2021-12-16 04:08:52,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-16 04:08:52,972 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 87 [2021-12-16 04:08:52,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 04:08:53,154 INFO L225 Difference]: With dead ends: 63106 [2021-12-16 04:08:53,154 INFO L226 Difference]: Without dead ends: 42133 [2021-12-16 04:08:53,214 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-12-16 04:08:53,215 INFO L933 BasicCegarLoop]: 2106 mSDtfsCounter, 1842 mSDsluCounter, 2437 mSDsCounter, 0 mSdLazyCounter, 822 mSolverCounterSat, 1005 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2059 SdHoareTripleChecker+Valid, 4543 SdHoareTripleChecker+Invalid, 1827 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1005 IncrementalHoareTripleChecker+Valid, 822 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2021-12-16 04:08:53,216 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2059 Valid, 4543 Invalid, 1827 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1005 Valid, 822 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2021-12-16 04:08:53,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42133 states. [2021-12-16 04:08:54,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42133 to 40181. [2021-12-16 04:08:54,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40181 states, 28389 states have (on average 1.3354820529078164) internal successors, (37913), 28626 states have internal predecessors, (37913), 9077 states have call successors, (9077), 2715 states have call predecessors, (9077), 2714 states have return successors, (9070), 9031 states have call predecessors, (9070), 9070 states have call successors, (9070) [2021-12-16 04:08:54,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40181 states to 40181 states and 56060 transitions. [2021-12-16 04:08:54,493 INFO L78 Accepts]: Start accepts. Automaton has 40181 states and 56060 transitions. Word has length 87 [2021-12-16 04:08:54,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 04:08:54,494 INFO L470 AbstractCegarLoop]: Abstraction has 40181 states and 56060 transitions. [2021-12-16 04:08:54,495 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-16 04:08:54,495 INFO L276 IsEmpty]: Start isEmpty. Operand 40181 states and 56060 transitions. [2021-12-16 04:08:54,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-12-16 04:08:54,496 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 04:08:54,496 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 04:08:54,496 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-16 04:08:54,496 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 04:08:54,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 04:08:54,497 INFO L85 PathProgramCache]: Analyzing trace with hash 835779799, now seen corresponding path program 1 times [2021-12-16 04:08:54,497 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 04:08:54,497 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1846312585] [2021-12-16 04:08:54,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 04:08:54,497 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 04:08:54,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:08:54,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 04:08:54,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:08:54,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-16 04:08:54,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:08:54,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-16 04:08:54,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:08:54,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-16 04:08:54,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:08:54,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-16 04:08:54,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:08:54,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-16 04:08:54,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:08:54,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-16 04:08:54,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:08:54,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-16 04:08:54,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:08:54,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-16 04:08:54,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:08:54,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-16 04:08:54,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:08:54,920 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2021-12-16 04:08:54,920 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 04:08:54,920 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1846312585] [2021-12-16 04:08:54,921 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1846312585] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 04:08:54,921 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 04:08:54,921 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-16 04:08:54,921 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702938499] [2021-12-16 04:08:54,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 04:08:54,921 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-16 04:08:54,921 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 04:08:54,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-16 04:08:54,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-16 04:08:54,923 INFO L87 Difference]: Start difference. First operand 40181 states and 56060 transitions. Second operand has 4 states, 4 states have (on average 9.5) internal successors, (38), 3 states have internal predecessors, (38), 3 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-12-16 04:08:58,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 04:08:58,052 INFO L93 Difference]: Finished difference Result 48243 states and 66226 transitions. [2021-12-16 04:08:58,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-16 04:08:58,052 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 3 states have internal predecessors, (38), 3 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 86 [2021-12-16 04:08:58,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 04:08:58,195 INFO L225 Difference]: With dead ends: 48243 [2021-12-16 04:08:58,195 INFO L226 Difference]: Without dead ends: 48239 [2021-12-16 04:08:58,221 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-16 04:08:58,222 INFO L933 BasicCegarLoop]: 1577 mSDtfsCounter, 1012 mSDsluCounter, 1406 mSDsCounter, 0 mSdLazyCounter, 655 mSolverCounterSat, 350 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1115 SdHoareTripleChecker+Valid, 2983 SdHoareTripleChecker+Invalid, 1005 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 350 IncrementalHoareTripleChecker+Valid, 655 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2021-12-16 04:08:58,222 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1115 Valid, 2983 Invalid, 1005 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [350 Valid, 655 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2021-12-16 04:08:58,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48239 states. [2021-12-16 04:08:59,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48239 to 45717. [2021-12-16 04:08:59,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45717 states, 32283 states have (on average 1.318031161911842) internal successors, (42550), 32518 states have internal predecessors, (42550), 9845 states have call successors, (9845), 3589 states have call predecessors, (9845), 3588 states have return successors, (9840), 9801 states have call predecessors, (9840), 9840 states have call successors, (9840) [2021-12-16 04:08:59,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45717 states to 45717 states and 62235 transitions. [2021-12-16 04:08:59,495 INFO L78 Accepts]: Start accepts. Automaton has 45717 states and 62235 transitions. Word has length 86 [2021-12-16 04:08:59,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 04:08:59,495 INFO L470 AbstractCegarLoop]: Abstraction has 45717 states and 62235 transitions. [2021-12-16 04:08:59,495 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 3 states have internal predecessors, (38), 3 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-12-16 04:08:59,495 INFO L276 IsEmpty]: Start isEmpty. Operand 45717 states and 62235 transitions. [2021-12-16 04:08:59,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-12-16 04:08:59,497 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 04:08:59,497 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 04:08:59,497 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-16 04:08:59,497 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 04:08:59,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 04:08:59,498 INFO L85 PathProgramCache]: Analyzing trace with hash 138844034, now seen corresponding path program 1 times [2021-12-16 04:08:59,498 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 04:08:59,498 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416433835] [2021-12-16 04:08:59,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 04:08:59,499 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 04:08:59,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:08:59,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 04:08:59,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:08:59,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-16 04:08:59,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:08:59,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-16 04:08:59,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:08:59,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-16 04:08:59,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:08:59,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-16 04:08:59,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:08:59,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-16 04:08:59,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:08:59,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-16 04:08:59,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:08:59,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-16 04:08:59,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:08:59,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-16 04:08:59,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:08:59,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-16 04:08:59,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:08:59,661 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2021-12-16 04:08:59,661 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 04:08:59,661 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [416433835] [2021-12-16 04:08:59,661 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [416433835] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 04:08:59,661 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 04:08:59,662 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-16 04:08:59,662 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201824989] [2021-12-16 04:08:59,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 04:08:59,662 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-16 04:08:59,662 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 04:08:59,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-16 04:08:59,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-16 04:08:59,664 INFO L87 Difference]: Start difference. First operand 45717 states and 62235 transitions. Second operand has 4 states, 4 states have (on average 9.75) internal successors, (39), 3 states have internal predecessors, (39), 3 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-12-16 04:09:04,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 04:09:04,037 INFO L93 Difference]: Finished difference Result 114799 states and 156015 transitions. [2021-12-16 04:09:04,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-16 04:09:04,037 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 3 states have internal predecessors, (39), 3 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 87 [2021-12-16 04:09:04,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 04:09:04,298 INFO L225 Difference]: With dead ends: 114799 [2021-12-16 04:09:04,298 INFO L226 Difference]: Without dead ends: 69116 [2021-12-16 04:09:04,411 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-16 04:09:04,412 INFO L933 BasicCegarLoop]: 1706 mSDtfsCounter, 964 mSDsluCounter, 1960 mSDsCounter, 0 mSdLazyCounter, 785 mSolverCounterSat, 428 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1070 SdHoareTripleChecker+Valid, 3666 SdHoareTripleChecker+Invalid, 1213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 428 IncrementalHoareTripleChecker+Valid, 785 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2021-12-16 04:09:04,412 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1070 Valid, 3666 Invalid, 1213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [428 Valid, 785 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2021-12-16 04:09:04,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69116 states. [2021-12-16 04:09:06,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69116 to 64301. [2021-12-16 04:09:06,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64301 states, 45440 states have (on average 1.312411971830986) internal successors, (59636), 46078 states have internal predecessors, (59636), 13401 states have call successors, (13401), 5609 states have call predecessors, (13401), 5459 states have return successors, (13650), 12869 states have call predecessors, (13650), 13394 states have call successors, (13650) [2021-12-16 04:09:06,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64301 states to 64301 states and 86687 transitions. [2021-12-16 04:09:06,554 INFO L78 Accepts]: Start accepts. Automaton has 64301 states and 86687 transitions. Word has length 87 [2021-12-16 04:09:06,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 04:09:06,554 INFO L470 AbstractCegarLoop]: Abstraction has 64301 states and 86687 transitions. [2021-12-16 04:09:06,555 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 3 states have internal predecessors, (39), 3 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-12-16 04:09:06,555 INFO L276 IsEmpty]: Start isEmpty. Operand 64301 states and 86687 transitions. [2021-12-16 04:09:06,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-12-16 04:09:06,560 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 04:09:06,560 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 04:09:06,560 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-16 04:09:06,560 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 04:09:06,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 04:09:06,562 INFO L85 PathProgramCache]: Analyzing trace with hash 8676666, now seen corresponding path program 1 times [2021-12-16 04:09:06,562 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 04:09:06,562 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [850416758] [2021-12-16 04:09:06,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 04:09:06,562 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 04:09:06,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:09:06,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 04:09:06,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:09:06,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-16 04:09:06,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:09:06,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-16 04:09:06,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:09:06,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-16 04:09:06,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:09:06,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-16 04:09:06,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:09:06,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-16 04:09:06,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:09:06,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-16 04:09:06,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:09:06,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-16 04:09:06,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:09:06,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-16 04:09:06,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:09:06,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-16 04:09:06,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:09:06,730 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2021-12-16 04:09:06,730 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 04:09:06,730 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [850416758] [2021-12-16 04:09:06,731 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [850416758] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 04:09:06,731 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 04:09:06,731 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-16 04:09:06,731 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977759313] [2021-12-16 04:09:06,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 04:09:06,732 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-16 04:09:06,732 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 04:09:06,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-16 04:09:06,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-16 04:09:06,733 INFO L87 Difference]: Start difference. First operand 64301 states and 86687 transitions. Second operand has 4 states, 4 states have (on average 10.0) internal successors, (40), 3 states have internal predecessors, (40), 3 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-12-16 04:09:10,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 04:09:10,263 INFO L93 Difference]: Finished difference Result 68461 states and 92768 transitions. [2021-12-16 04:09:10,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-16 04:09:10,263 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 3 states have internal predecessors, (40), 3 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 88 [2021-12-16 04:09:10,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 04:09:10,481 INFO L225 Difference]: With dead ends: 68461 [2021-12-16 04:09:10,481 INFO L226 Difference]: Without dead ends: 68451 [2021-12-16 04:09:10,504 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-16 04:09:10,505 INFO L933 BasicCegarLoop]: 1523 mSDtfsCounter, 1474 mSDsluCounter, 747 mSDsCounter, 0 mSdLazyCounter, 479 mSolverCounterSat, 334 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1673 SdHoareTripleChecker+Valid, 2270 SdHoareTripleChecker+Invalid, 813 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 334 IncrementalHoareTripleChecker+Valid, 479 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2021-12-16 04:09:10,505 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1673 Valid, 2270 Invalid, 813 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [334 Valid, 479 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2021-12-16 04:09:10,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68451 states. [2021-12-16 04:09:11,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68451 to 64293. [2021-12-16 04:09:12,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64293 states, 45433 states have (on average 1.3113815948759713) internal successors, (59580), 46070 states have internal predecessors, (59580), 13400 states have call successors, (13400), 5609 states have call predecessors, (13400), 5459 states have return successors, (13650), 12869 states have call predecessors, (13650), 13394 states have call successors, (13650) [2021-12-16 04:09:12,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64293 states to 64293 states and 86630 transitions. [2021-12-16 04:09:12,460 INFO L78 Accepts]: Start accepts. Automaton has 64293 states and 86630 transitions. Word has length 88 [2021-12-16 04:09:12,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 04:09:12,461 INFO L470 AbstractCegarLoop]: Abstraction has 64293 states and 86630 transitions. [2021-12-16 04:09:12,461 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 3 states have internal predecessors, (40), 3 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-12-16 04:09:12,461 INFO L276 IsEmpty]: Start isEmpty. Operand 64293 states and 86630 transitions. [2021-12-16 04:09:12,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2021-12-16 04:09:12,468 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 04:09:12,469 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 04:09:12,469 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-16 04:09:12,469 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 04:09:12,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 04:09:12,470 INFO L85 PathProgramCache]: Analyzing trace with hash -1887041004, now seen corresponding path program 1 times [2021-12-16 04:09:12,470 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 04:09:12,470 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1837271554] [2021-12-16 04:09:12,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 04:09:12,470 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 04:09:12,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:09:12,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 04:09:12,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:09:12,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-16 04:09:12,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:09:12,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-16 04:09:12,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:09:12,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-16 04:09:12,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:09:12,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-16 04:09:12,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:09:12,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-16 04:09:12,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:09:12,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-16 04:09:12,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:09:12,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-16 04:09:12,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:09:12,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-16 04:09:12,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:09:12,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-16 04:09:12,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:09:12,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-16 04:09:12,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:09:12,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-16 04:09:12,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:09:12,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:09:12,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:09:12,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-16 04:09:12,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:09:12,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-12-16 04:09:12,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:09:12,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-12-16 04:09:12,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:09:12,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-16 04:09:12,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:09:12,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-12-16 04:09:12,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:09:12,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:09:12,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:09:12,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:09:12,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:09:12,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2021-12-16 04:09:12,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:09:12,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:09:12,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:09:12,708 INFO L134 CoverageAnalysis]: Checked inductivity of 207 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 204 trivial. 0 not checked. [2021-12-16 04:09:12,708 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 04:09:12,709 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1837271554] [2021-12-16 04:09:12,709 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1837271554] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 04:09:12,709 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 04:09:12,709 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-16 04:09:12,709 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129199264] [2021-12-16 04:09:12,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 04:09:12,710 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-16 04:09:12,710 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 04:09:12,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-16 04:09:12,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-16 04:09:12,710 INFO L87 Difference]: Start difference. First operand 64293 states and 86630 transitions. Second operand has 6 states, 6 states have (on average 14.333333333333334) internal successors, (86), 3 states have internal predecessors, (86), 2 states have call successors, (24), 5 states have call predecessors, (24), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2021-12-16 04:09:17,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 04:09:17,559 INFO L93 Difference]: Finished difference Result 99419 states and 134141 transitions. [2021-12-16 04:09:17,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-16 04:09:17,566 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.333333333333334) internal successors, (86), 3 states have internal predecessors, (86), 2 states have call successors, (24), 5 states have call predecessors, (24), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 168 [2021-12-16 04:09:17,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 04:09:17,679 INFO L225 Difference]: With dead ends: 99419 [2021-12-16 04:09:17,679 INFO L226 Difference]: Without dead ends: 35160 [2021-12-16 04:09:17,791 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-12-16 04:09:17,792 INFO L933 BasicCegarLoop]: 1455 mSDtfsCounter, 1769 mSDsluCounter, 1897 mSDsCounter, 0 mSdLazyCounter, 1335 mSolverCounterSat, 843 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2000 SdHoareTripleChecker+Valid, 3352 SdHoareTripleChecker+Invalid, 2178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 843 IncrementalHoareTripleChecker+Valid, 1335 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2021-12-16 04:09:17,792 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2000 Valid, 3352 Invalid, 2178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [843 Valid, 1335 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2021-12-16 04:09:17,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35160 states. [2021-12-16 04:09:18,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35160 to 32426. [2021-12-16 04:09:18,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32426 states, 22912 states have (on average 1.3124563547486034) internal successors, (30071), 23239 states have internal predecessors, (30071), 6754 states have call successors, (6754), 2835 states have call predecessors, (6754), 2759 states have return successors, (6876), 6479 states have call predecessors, (6876), 6748 states have call successors, (6876) [2021-12-16 04:09:18,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32426 states to 32426 states and 43701 transitions. [2021-12-16 04:09:18,695 INFO L78 Accepts]: Start accepts. Automaton has 32426 states and 43701 transitions. Word has length 168 [2021-12-16 04:09:18,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 04:09:18,696 INFO L470 AbstractCegarLoop]: Abstraction has 32426 states and 43701 transitions. [2021-12-16 04:09:18,696 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.333333333333334) internal successors, (86), 3 states have internal predecessors, (86), 2 states have call successors, (24), 5 states have call predecessors, (24), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2021-12-16 04:09:18,696 INFO L276 IsEmpty]: Start isEmpty. Operand 32426 states and 43701 transitions. [2021-12-16 04:09:18,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2021-12-16 04:09:18,701 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 04:09:18,701 INFO L514 BasicCegarLoop]: trace histogram [18, 18, 18, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 04:09:18,701 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-16 04:09:18,702 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 04:09:18,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 04:09:18,702 INFO L85 PathProgramCache]: Analyzing trace with hash -1091713676, now seen corresponding path program 1 times [2021-12-16 04:09:18,702 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 04:09:18,702 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [829674377] [2021-12-16 04:09:18,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 04:09:18,703 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 04:09:18,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:09:18,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 04:09:18,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:09:18,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-16 04:09:18,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:09:18,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-16 04:09:18,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:09:18,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-16 04:09:18,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:09:18,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-16 04:09:18,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:09:18,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-16 04:09:18,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:09:18,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-16 04:09:18,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:09:18,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-16 04:09:18,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:09:18,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-16 04:09:19,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:09:19,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-16 04:09:19,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:09:19,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-16 04:09:19,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:09:19,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-16 04:09:19,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:09:19,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-16 04:09:19,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:09:19,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-16 04:09:19,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:09:19,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-16 04:09:19,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:09:19,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-16 04:09:19,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:09:19,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-12-16 04:09:19,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:09:19,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2021-12-16 04:09:19,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:09:19,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-12-16 04:09:19,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:09:19,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2021-12-16 04:09:19,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:09:19,073 INFO L134 CoverageAnalysis]: Checked inductivity of 614 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2021-12-16 04:09:19,073 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 04:09:19,073 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [829674377] [2021-12-16 04:09:19,073 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [829674377] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 04:09:19,073 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 04:09:19,073 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-16 04:09:19,073 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423843813] [2021-12-16 04:09:19,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 04:09:19,074 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-16 04:09:19,074 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 04:09:19,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-16 04:09:19,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-16 04:09:19,075 INFO L87 Difference]: Start difference. First operand 32426 states and 43701 transitions. Second operand has 5 states, 5 states have (on average 13.6) internal successors, (68), 3 states have internal predecessors, (68), 3 states have call successors, (23), 4 states have call predecessors, (23), 1 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20)