./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 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-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 0.2.2-839c364b5d67a0f615c82cb70ab247790648d4a9-839c364 [2021-12-14 17:54:04,182 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-14 17:54:04,183 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-14 17:54:04,224 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-14 17:54:04,225 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-14 17:54:04,225 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-14 17:54:04,226 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-14 17:54:04,228 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-14 17:54:04,229 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-14 17:54:04,229 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-14 17:54:04,230 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-14 17:54:04,231 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-14 17:54:04,236 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-14 17:54:04,237 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-14 17:54:04,238 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-14 17:54:04,239 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-14 17:54:04,240 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-14 17:54:04,241 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-14 17:54:04,242 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-14 17:54:04,243 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-14 17:54:04,243 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-14 17:54:04,247 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-14 17:54:04,247 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-14 17:54:04,248 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-14 17:54:04,250 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-14 17:54:04,259 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-14 17:54:04,259 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-14 17:54:04,260 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-14 17:54:04,261 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-14 17:54:04,261 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-14 17:54:04,262 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-14 17:54:04,262 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-14 17:54:04,263 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-14 17:54:04,264 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-14 17:54:04,264 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-14 17:54:04,265 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-14 17:54:04,266 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-14 17:54:04,266 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-14 17:54:04,266 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-14 17:54:04,266 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-14 17:54:04,267 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-14 17:54:04,268 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-14 17:54:04,285 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-14 17:54:04,286 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-14 17:54:04,286 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-14 17:54:04,286 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-14 17:54:04,287 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-14 17:54:04,287 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-14 17:54:04,288 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-14 17:54:04,288 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-14 17:54:04,288 INFO L138 SettingsManager]: * Use SBE=true [2021-12-14 17:54:04,288 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-14 17:54:04,289 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-14 17:54:04,289 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-14 17:54:04,289 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-14 17:54:04,289 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-14 17:54:04,290 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-14 17:54:04,290 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-14 17:54:04,290 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-14 17:54:04,290 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-14 17:54:04,290 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-14 17:54:04,290 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-14 17:54:04,291 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-14 17:54:04,291 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 17:54:04,291 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-14 17:54:04,291 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-14 17:54:04,291 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-14 17:54:04,291 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-14 17:54:04,292 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-14 17:54:04,292 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-14 17:54:04,292 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-14 17:54:04,292 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-14 17:54:04,292 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-14 17:54:04,292 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c3c8f5f42e93f38ff45b5fb218b90423c4fa8214795cc0db5e91266a2717c97b [2021-12-14 17:54:04,487 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-14 17:54:04,502 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-14 17:54:04,506 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-14 17:54:04,507 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-14 17:54:04,507 INFO L275 PluginConnector]: CDTParser initialized [2021-12-14 17:54:04,508 INFO L432 ainManager$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 [2021-12-14 17:54:04,555 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/24925b996/5db9374f127742ec94990a3c369a4476/FLAG2b47efdb0 [2021-12-14 17:54:05,175 INFO L306 CDTParser]: Found 1 translation units. [2021-12-14 17:54:05,176 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 [2021-12-14 17:54:05,209 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/24925b996/5db9374f127742ec94990a3c369a4476/FLAG2b47efdb0 [2021-12-14 17:54:05,599 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/24925b996/5db9374f127742ec94990a3c369a4476 [2021-12-14 17:54:05,601 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-14 17:54:05,603 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-14 17:54:05,605 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-14 17:54:05,605 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-14 17:54:05,607 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-14 17:54:05,608 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 05:54:05" (1/1) ... [2021-12-14 17:54:05,609 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e038a60 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:54:05, skipping insertion in model container [2021-12-14 17:54:05,609 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 05:54:05" (1/1) ... [2021-12-14 17:54:05,613 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-14 17:54:05,678 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-14 17:54:06,133 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] [2021-12-14 17:54:06,623 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 17:54:06,675 INFO L203 MainTranslator]: Completed pre-run [2021-12-14 17:54:06,724 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] [2021-12-14 17:54:06,857 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 17:54:06,915 INFO L208 MainTranslator]: Completed translation [2021-12-14 17:54:06,917 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:54:06 WrapperNode [2021-12-14 17:54:06,917 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-14 17:54:06,918 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-14 17:54:06,918 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-14 17:54:06,918 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-14 17:54:06,922 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:54:06" (1/1) ... [2021-12-14 17:54:06,981 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:54:06" (1/1) ... [2021-12-14 17:54:07,112 INFO L137 Inliner]: procedures = 256, calls = 2394, calls flagged for inlining = 116, calls inlined = 95, statements flattened = 3925 [2021-12-14 17:54:07,112 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-14 17:54:07,113 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-14 17:54:07,113 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-14 17:54:07,113 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-14 17:54:07,119 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:54:06" (1/1) ... [2021-12-14 17:54:07,119 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:54:06" (1/1) ... [2021-12-14 17:54:07,142 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:54:06" (1/1) ... [2021-12-14 17:54:07,143 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:54:06" (1/1) ... [2021-12-14 17:54:07,211 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:54:06" (1/1) ... [2021-12-14 17:54:07,228 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:54:06" (1/1) ... [2021-12-14 17:54:07,254 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:54:06" (1/1) ... [2021-12-14 17:54:07,278 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-14 17:54:07,279 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-14 17:54:07,279 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-14 17:54:07,279 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-14 17:54:07,280 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:54:06" (1/1) ... [2021-12-14 17:54:07,285 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 17:54:07,294 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 17:54:07,311 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-14 17:54:07,317 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-14 17:54:07,336 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_strcpy [2021-12-14 17:54:07,336 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_strcpy [2021-12-14 17:54:07,336 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_intfdata [2021-12-14 17:54:07,336 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_intfdata [2021-12-14 17:54:07,337 INFO L130 BoogieDeclarations]: Found specification of procedure usb_submit_urb [2021-12-14 17:54:07,337 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_submit_urb [2021-12-14 17:54:07,337 INFO L130 BoogieDeclarations]: Found specification of procedure __xchg_wrong_size [2021-12-14 17:54:07,337 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-12-14 17:54:07,337 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-12-14 17:54:07,337 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-12-14 17:54:07,337 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-12-14 17:54:07,338 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_dev [2021-12-14 17:54:07,338 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_dev [2021-12-14 17:54:07,338 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2021-12-14 17:54:07,338 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2021-12-14 17:54:07,338 INFO L130 BoogieDeclarations]: Found specification of procedure usb_make_path [2021-12-14 17:54:07,338 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_make_path [2021-12-14 17:54:07,338 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-12-14 17:54:07,338 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-12-14 17:54:07,339 INFO L130 BoogieDeclarations]: Found specification of procedure send_packet [2021-12-14 17:54:07,339 INFO L138 BoogieDeclarations]: Found implementation of procedure send_packet [2021-12-14 17:54:07,339 INFO L130 BoogieDeclarations]: Found specification of procedure strlcat [2021-12-14 17:54:07,339 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcat [2021-12-14 17:54:07,339 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-12-14 17:54:07,339 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-12-14 17:54:07,339 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-12-14 17:54:07,339 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-12-14 17:54:07,339 INFO L130 BoogieDeclarations]: Found specification of procedure imon_disconnect [2021-12-14 17:54:07,340 INFO L138 BoogieDeclarations]: Found implementation of procedure imon_disconnect [2021-12-14 17:54:07,340 INFO L130 BoogieDeclarations]: Found specification of procedure usb_deregister_dev [2021-12-14 17:54:07,340 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_deregister_dev [2021-12-14 17:54:07,340 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_lock_of_imon_context [2021-12-14 17:54:07,340 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_lock_of_imon_context [2021-12-14 17:54:07,340 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-14 17:54:07,340 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-14 17:54:07,341 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2021-12-14 17:54:07,341 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2021-12-14 17:54:07,341 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-12-14 17:54:07,341 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-12-14 17:54:07,341 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_driver_lock [2021-12-14 17:54:07,341 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_driver_lock [2021-12-14 17:54:07,341 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-14 17:54:07,342 INFO L130 BoogieDeclarations]: Found specification of procedure input_event [2021-12-14 17:54:07,342 INFO L138 BoogieDeclarations]: Found implementation of procedure input_event [2021-12-14 17:54:07,342 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-14 17:54:07,342 INFO L130 BoogieDeclarations]: Found specification of procedure input_allocate_device [2021-12-14 17:54:07,342 INFO L138 BoogieDeclarations]: Found implementation of procedure input_allocate_device [2021-12-14 17:54:07,342 INFO L130 BoogieDeclarations]: Found specification of procedure dev_set_drvdata [2021-12-14 17:54:07,342 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_set_drvdata [2021-12-14 17:54:07,342 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-14 17:54:07,343 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-14 17:54:07,343 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2021-12-14 17:54:07,343 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2021-12-14 17:54:07,343 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2021-12-14 17:54:07,343 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2021-12-14 17:54:07,343 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_intfdata [2021-12-14 17:54:07,344 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_intfdata [2021-12-14 17:54:07,344 INFO L130 BoogieDeclarations]: Found specification of procedure input_set_drvdata [2021-12-14 17:54:07,344 INFO L138 BoogieDeclarations]: Found implementation of procedure input_set_drvdata [2021-12-14 17:54:07,345 INFO L130 BoogieDeclarations]: Found specification of procedure input_report_key [2021-12-14 17:54:07,345 INFO L138 BoogieDeclarations]: Found implementation of procedure input_report_key [2021-12-14 17:54:07,345 INFO L130 BoogieDeclarations]: Found specification of procedure usb_alloc_urb [2021-12-14 17:54:07,345 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_alloc_urb [2021-12-14 17:54:07,345 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-12-14 17:54:07,346 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2021-12-14 17:54:07,346 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2021-12-14 17:54:07,346 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2021-12-14 17:54:07,346 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2021-12-14 17:54:07,346 INFO L130 BoogieDeclarations]: Found specification of procedure input_report_abs [2021-12-14 17:54:07,346 INFO L138 BoogieDeclarations]: Found implementation of procedure input_report_abs [2021-12-14 17:54:07,346 INFO L130 BoogieDeclarations]: Found specification of procedure dev_get_drvdata [2021-12-14 17:54:07,347 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_get_drvdata [2021-12-14 17:54:07,347 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-12-14 17:54:07,347 INFO L130 BoogieDeclarations]: Found specification of procedure input_free_device [2021-12-14 17:54:07,347 INFO L138 BoogieDeclarations]: Found implementation of procedure input_free_device [2021-12-14 17:54:07,347 INFO L130 BoogieDeclarations]: Found specification of procedure sysfs_create_group [2021-12-14 17:54:07,347 INFO L138 BoogieDeclarations]: Found implementation of procedure sysfs_create_group [2021-12-14 17:54:07,347 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-14 17:54:07,348 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer_sync [2021-12-14 17:54:07,348 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer_sync [2021-12-14 17:54:07,348 INFO L130 BoogieDeclarations]: Found specification of procedure sysfs_remove_group [2021-12-14 17:54:07,348 INFO L138 BoogieDeclarations]: Found implementation of procedure sysfs_remove_group [2021-12-14 17:54:07,348 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-12-14 17:54:07,348 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-12-14 17:54:07,348 INFO L130 BoogieDeclarations]: Found specification of procedure lcd_write [2021-12-14 17:54:07,348 INFO L138 BoogieDeclarations]: Found implementation of procedure lcd_write [2021-12-14 17:54:07,348 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2021-12-14 17:54:07,348 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2021-12-14 17:54:07,349 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_urb [2021-12-14 17:54:07,349 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_urb [2021-12-14 17:54:07,349 INFO L130 BoogieDeclarations]: Found specification of procedure usb_fill_int_urb [2021-12-14 17:54:07,349 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_fill_int_urb [2021-12-14 17:54:07,349 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-12-14 17:54:07,350 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-12-14 17:54:07,350 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-14 17:54:07,350 INFO L130 BoogieDeclarations]: Found specification of procedure usb_to_input_id [2021-12-14 17:54:07,350 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_to_input_id [2021-12-14 17:54:07,350 INFO L130 BoogieDeclarations]: Found specification of procedure input_sync [2021-12-14 17:54:07,350 INFO L138 BoogieDeclarations]: Found implementation of procedure input_sync [2021-12-14 17:54:07,351 INFO L130 BoogieDeclarations]: Found specification of procedure noop_llseek [2021-12-14 17:54:07,351 INFO L138 BoogieDeclarations]: Found implementation of procedure noop_llseek [2021-12-14 17:54:07,351 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-12-14 17:54:07,351 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-12-14 17:54:07,352 INFO L130 BoogieDeclarations]: Found specification of procedure free_imon_context [2021-12-14 17:54:07,352 INFO L138 BoogieDeclarations]: Found implementation of procedure free_imon_context [2021-12-14 17:54:07,352 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-14 17:54:07,352 INFO L130 BoogieDeclarations]: Found specification of procedure disable_suitable_timer_1 [2021-12-14 17:54:07,352 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_suitable_timer_1 [2021-12-14 17:54:07,352 INFO L130 BoogieDeclarations]: Found specification of procedure input_register_device [2021-12-14 17:54:07,352 INFO L138 BoogieDeclarations]: Found implementation of procedure input_register_device [2021-12-14 17:54:07,352 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_lock_of_imon_context [2021-12-14 17:54:07,352 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_lock_of_imon_context [2021-12-14 17:54:07,353 INFO L130 BoogieDeclarations]: Found specification of procedure copy_from_user [2021-12-14 17:54:07,353 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_from_user [2021-12-14 17:54:07,353 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-14 17:54:07,353 INFO L130 BoogieDeclarations]: Found specification of procedure vfd_write [2021-12-14 17:54:07,353 INFO L138 BoogieDeclarations]: Found implementation of procedure vfd_write [2021-12-14 17:54:07,354 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-14 17:54:07,354 INFO L130 BoogieDeclarations]: Found specification of procedure input_set_abs_params [2021-12-14 17:54:07,356 INFO L138 BoogieDeclarations]: Found implementation of procedure input_set_abs_params [2021-12-14 17:54:07,356 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-12-14 17:54:07,356 INFO L130 BoogieDeclarations]: Found specification of procedure reg_timer_1 [2021-12-14 17:54:07,356 INFO L138 BoogieDeclarations]: Found implementation of procedure reg_timer_1 [2021-12-14 17:54:07,357 INFO L130 BoogieDeclarations]: Found specification of procedure display_close [2021-12-14 17:54:07,357 INFO L138 BoogieDeclarations]: Found implementation of procedure display_close [2021-12-14 17:54:07,357 INFO L130 BoogieDeclarations]: Found specification of procedure usb_register_dev [2021-12-14 17:54:07,357 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_register_dev [2021-12-14 17:54:07,357 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_urb [2021-12-14 17:54:07,360 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_urb [2021-12-14 17:54:07,360 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_driver_lock [2021-12-14 17:54:07,361 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_driver_lock [2021-12-14 17:54:07,361 INFO L130 BoogieDeclarations]: Found specification of procedure input_unregister_device [2021-12-14 17:54:07,361 INFO L138 BoogieDeclarations]: Found implementation of procedure input_unregister_device [2021-12-14 17:54:07,361 INFO L130 BoogieDeclarations]: Found specification of procedure imon_find_endpoints [2021-12-14 17:54:07,361 INFO L138 BoogieDeclarations]: Found implementation of procedure imon_find_endpoints [2021-12-14 17:54:07,361 INFO L130 BoogieDeclarations]: Found specification of procedure display_open [2021-12-14 17:54:07,361 INFO L138 BoogieDeclarations]: Found implementation of procedure display_open [2021-12-14 17:54:07,361 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-14 17:54:07,361 INFO L130 BoogieDeclarations]: Found specification of procedure interface_to_usbdev [2021-12-14 17:54:07,361 INFO L138 BoogieDeclarations]: Found implementation of procedure interface_to_usbdev [2021-12-14 17:54:07,362 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-14 17:54:07,362 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-14 17:54:07,839 INFO L236 CfgBuilder]: Building ICFG [2021-12-14 17:54:07,842 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-14 17:54:08,112 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-12-14 17:54:10,932 INFO L277 CfgBuilder]: Performing block encoding [2021-12-14 17:54:10,942 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-14 17:54:10,942 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-14 17:54:10,944 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 05:54:10 BoogieIcfgContainer [2021-12-14 17:54:10,944 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-14 17:54:10,945 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-14 17:54:10,945 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-14 17:54:10,948 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-14 17:54:10,948 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 05:54:05" (1/3) ... [2021-12-14 17:54:10,948 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@545e89c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 05:54:10, skipping insertion in model container [2021-12-14 17:54:10,948 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:54:06" (2/3) ... [2021-12-14 17:54:10,949 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@545e89c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 05:54:10, skipping insertion in model container [2021-12-14 17:54:10,949 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 05:54:10" (3/3) ... [2021-12-14 17:54:10,950 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-stable-a9e7fb5-1-32_7a-drivers--media--rc--imon.ko-entry_point.cil.out.i [2021-12-14 17:54:10,953 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-14 17:54:10,953 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-14 17:54:10,985 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-14 17:54:10,989 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-14 17:54:10,989 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-14 17:54:11,013 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) [2021-12-14 17:54:11,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-12-14 17:54:11,019 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:54:11,020 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] [2021-12-14 17:54:11,020 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:54:11,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:54:11,024 INFO L85 PathProgramCache]: Analyzing trace with hash -958231293, now seen corresponding path program 1 times [2021-12-14 17:54:11,029 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:54:11,030 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890276459] [2021-12-14 17:54:11,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:54:11,031 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:54:11,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:54:11,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:54:11,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:54:11,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-14 17:54:11,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:54:11,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-14 17:54:11,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:54:11,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-14 17:54:11,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:54:11,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-14 17:54:11,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:54:11,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-14 17:54:11,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:54:11,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-14 17:54:11,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:54:11,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-14 17:54:11,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:54:11,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-14 17:54:11,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:54:11,561 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2021-12-14 17:54:11,562 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:54:11,562 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890276459] [2021-12-14 17:54:11,562 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [890276459] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:54:11,563 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:54:11,563 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-14 17:54:11,564 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961822586] [2021-12-14 17:54:11,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:54:11,567 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-14 17:54:11,567 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:54:11,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-14 17:54:11,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-14 17:54:11,590 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) [2021-12-14 17:54:14,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:54:14,882 INFO L93 Difference]: Finished difference Result 3294 states and 4962 transitions. [2021-12-14 17:54:14,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-14 17:54:14,884 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 [2021-12-14 17:54:14,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:54:14,902 INFO L225 Difference]: With dead ends: 3294 [2021-12-14 17:54:14,903 INFO L226 Difference]: Without dead ends: 2166 [2021-12-14 17:54:14,915 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 [2021-12-14 17:54:14,917 INFO L933 BasicCegarLoop]: 1771 mSDtfsCounter, 1603 mSDsluCounter, 2109 mSDsCounter, 0 mSdLazyCounter, 901 mSolverCounterSat, 600 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1805 SdHoareTripleChecker+Valid, 3880 SdHoareTripleChecker+Invalid, 1501 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 600 IncrementalHoareTripleChecker+Valid, 901 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2021-12-14 17:54:14,918 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1805 Valid, 3880 Invalid, 1501 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [600 Valid, 901 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2021-12-14 17:54:14,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2166 states. [2021-12-14 17:54:15,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2166 to 2078. [2021-12-14 17:54:15,072 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) [2021-12-14 17:54:15,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2078 states to 2078 states and 2949 transitions. [2021-12-14 17:54:15,084 INFO L78 Accepts]: Start accepts. Automaton has 2078 states and 2949 transitions. Word has length 72 [2021-12-14 17:54:15,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:54:15,085 INFO L470 AbstractCegarLoop]: Abstraction has 2078 states and 2949 transitions. [2021-12-14 17:54:15,085 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) [2021-12-14 17:54:15,085 INFO L276 IsEmpty]: Start isEmpty. Operand 2078 states and 2949 transitions. [2021-12-14 17:54:15,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-12-14 17:54:15,093 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:54:15,093 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] [2021-12-14 17:54:15,093 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-14 17:54:15,093 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:54:15,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:54:15,094 INFO L85 PathProgramCache]: Analyzing trace with hash -1149281951, now seen corresponding path program 1 times [2021-12-14 17:54:15,094 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:54:15,095 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883439043] [2021-12-14 17:54:15,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:54:15,095 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:54:15,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:54:15,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:54:15,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:54:15,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-14 17:54:15,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:54:15,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-14 17:54:15,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:54:15,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-14 17:54:15,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:54:15,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-14 17:54:15,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:54:15,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-14 17:54:15,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:54:15,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-14 17:54:15,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:54:15,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-14 17:54:15,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:54:15,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-14 17:54:15,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:54:15,311 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2021-12-14 17:54:15,311 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:54:15,311 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [883439043] [2021-12-14 17:54:15,311 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [883439043] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:54:15,311 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:54:15,311 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-14 17:54:15,312 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906978183] [2021-12-14 17:54:15,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:54:15,313 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-14 17:54:15,313 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:54:15,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-14 17:54:15,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-14 17:54:15,314 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) [2021-12-14 17:54:18,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:54:18,507 INFO L93 Difference]: Finished difference Result 5218 states and 7472 transitions. [2021-12-14 17:54:18,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-14 17:54:18,508 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 [2021-12-14 17:54:18,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:54:18,520 INFO L225 Difference]: With dead ends: 5218 [2021-12-14 17:54:18,520 INFO L226 Difference]: Without dead ends: 3163 [2021-12-14 17:54:18,526 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 [2021-12-14 17:54:18,527 INFO L933 BasicCegarLoop]: 1730 mSDtfsCounter, 937 mSDsluCounter, 2124 mSDsCounter, 0 mSdLazyCounter, 800 mSolverCounterSat, 428 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1037 SdHoareTripleChecker+Valid, 3854 SdHoareTripleChecker+Invalid, 1228 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 428 IncrementalHoareTripleChecker+Valid, 800 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2021-12-14 17:54:18,527 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1037 Valid, 3854 Invalid, 1228 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [428 Valid, 800 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2021-12-14 17:54:18,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3163 states. [2021-12-14 17:54:18,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3163 to 3033. [2021-12-14 17:54:18,609 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) [2021-12-14 17:54:18,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3033 states to 3033 states and 4291 transitions. [2021-12-14 17:54:18,621 INFO L78 Accepts]: Start accepts. Automaton has 3033 states and 4291 transitions. Word has length 73 [2021-12-14 17:54:18,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:54:18,621 INFO L470 AbstractCegarLoop]: Abstraction has 3033 states and 4291 transitions. [2021-12-14 17:54:18,621 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) [2021-12-14 17:54:18,622 INFO L276 IsEmpty]: Start isEmpty. Operand 3033 states and 4291 transitions. [2021-12-14 17:54:18,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-12-14 17:54:18,623 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:54:18,624 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] [2021-12-14 17:54:18,624 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-14 17:54:18,624 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:54:18,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:54:18,625 INFO L85 PathProgramCache]: Analyzing trace with hash -2117811177, now seen corresponding path program 1 times [2021-12-14 17:54:18,625 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:54:18,625 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1350579252] [2021-12-14 17:54:18,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:54:18,625 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:54:18,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:54:18,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:54:18,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:54:18,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-14 17:54:18,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:54:18,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-14 17:54:18,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:54:18,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-14 17:54:18,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:54:18,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-14 17:54:18,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:54:18,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-14 17:54:18,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:54:18,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-14 17:54:18,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:54:18,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-14 17:54:18,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:54:18,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-14 17:54:18,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:54:18,846 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2021-12-14 17:54:18,846 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:54:18,846 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1350579252] [2021-12-14 17:54:18,846 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1350579252] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:54:18,846 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:54:18,847 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-14 17:54:18,847 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947669894] [2021-12-14 17:54:18,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:54:18,847 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-14 17:54:18,847 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:54:18,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-14 17:54:18,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-14 17:54:18,848 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) [2021-12-14 17:54:22,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:54:22,040 INFO L93 Difference]: Finished difference Result 9200 states and 13168 transitions. [2021-12-14 17:54:22,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-14 17:54:22,040 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 [2021-12-14 17:54:22,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:54:22,068 INFO L225 Difference]: With dead ends: 9200 [2021-12-14 17:54:22,069 INFO L226 Difference]: Without dead ends: 6197 [2021-12-14 17:54:22,080 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 [2021-12-14 17:54:22,082 INFO L933 BasicCegarLoop]: 1863 mSDtfsCounter, 1596 mSDsluCounter, 2184 mSDsCounter, 0 mSdLazyCounter, 913 mSolverCounterSat, 576 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1791 SdHoareTripleChecker+Valid, 4047 SdHoareTripleChecker+Invalid, 1489 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 576 IncrementalHoareTripleChecker+Valid, 913 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2021-12-14 17:54:22,085 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1791 Valid, 4047 Invalid, 1489 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [576 Valid, 913 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2021-12-14 17:54:22,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6197 states. [2021-12-14 17:54:22,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6197 to 5963. [2021-12-14 17:54:22,254 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) [2021-12-14 17:54:22,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5963 states to 5963 states and 8433 transitions. [2021-12-14 17:54:22,314 INFO L78 Accepts]: Start accepts. Automaton has 5963 states and 8433 transitions. Word has length 74 [2021-12-14 17:54:22,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:54:22,315 INFO L470 AbstractCegarLoop]: Abstraction has 5963 states and 8433 transitions. [2021-12-14 17:54:22,315 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) [2021-12-14 17:54:22,315 INFO L276 IsEmpty]: Start isEmpty. Operand 5963 states and 8433 transitions. [2021-12-14 17:54:22,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-12-14 17:54:22,317 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:54:22,317 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] [2021-12-14 17:54:22,317 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-14 17:54:22,317 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:54:22,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:54:22,318 INFO L85 PathProgramCache]: Analyzing trace with hash -1121570177, now seen corresponding path program 1 times [2021-12-14 17:54:22,318 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:54:22,318 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1405941584] [2021-12-14 17:54:22,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:54:22,319 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:54:22,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:54:22,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:54:22,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:54:22,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-14 17:54:22,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:54:22,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-14 17:54:22,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:54:22,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-14 17:54:22,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:54:22,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-14 17:54:22,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:54:22,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-14 17:54:22,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:54:22,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-14 17:54:22,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:54:22,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-14 17:54:22,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:54:22,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-14 17:54:22,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:54:22,487 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2021-12-14 17:54:22,488 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:54:22,488 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1405941584] [2021-12-14 17:54:22,488 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1405941584] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:54:22,488 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:54:22,488 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-14 17:54:22,488 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244796774] [2021-12-14 17:54:22,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:54:22,489 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-14 17:54:22,490 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:54:22,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-14 17:54:22,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-14 17:54:22,490 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) [2021-12-14 17:54:25,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:54:25,905 INFO L93 Difference]: Finished difference Result 17466 states and 24920 transitions. [2021-12-14 17:54:25,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-14 17:54:25,906 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 [2021-12-14 17:54:25,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:54:25,962 INFO L225 Difference]: With dead ends: 17466 [2021-12-14 17:54:25,962 INFO L226 Difference]: Without dead ends: 11533 [2021-12-14 17:54:25,982 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 [2021-12-14 17:54:25,983 INFO L933 BasicCegarLoop]: 1936 mSDtfsCounter, 1563 mSDsluCounter, 2190 mSDsCounter, 0 mSdLazyCounter, 922 mSolverCounterSat, 543 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1758 SdHoareTripleChecker+Valid, 4126 SdHoareTripleChecker+Invalid, 1465 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 543 IncrementalHoareTripleChecker+Valid, 922 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2021-12-14 17:54:25,983 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1758 Valid, 4126 Invalid, 1465 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [543 Valid, 922 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2021-12-14 17:54:25,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11533 states. [2021-12-14 17:54:26,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11533 to 11077. [2021-12-14 17:54:26,333 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) [2021-12-14 17:54:26,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11077 states to 11077 states and 15619 transitions. [2021-12-14 17:54:26,367 INFO L78 Accepts]: Start accepts. Automaton has 11077 states and 15619 transitions. Word has length 78 [2021-12-14 17:54:26,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:54:26,368 INFO L470 AbstractCegarLoop]: Abstraction has 11077 states and 15619 transitions. [2021-12-14 17:54:26,368 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) [2021-12-14 17:54:26,368 INFO L276 IsEmpty]: Start isEmpty. Operand 11077 states and 15619 transitions. [2021-12-14 17:54:26,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-12-14 17:54:26,369 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:54:26,369 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] [2021-12-14 17:54:26,370 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-14 17:54:26,370 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:54:26,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:54:26,370 INFO L85 PathProgramCache]: Analyzing trace with hash 1933438737, now seen corresponding path program 1 times [2021-12-14 17:54:26,371 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:54:26,371 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1903990996] [2021-12-14 17:54:26,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:54:26,371 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:54:26,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:54:26,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:54:26,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:54:26,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-14 17:54:26,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:54:26,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-14 17:54:26,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:54:26,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-14 17:54:26,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:54:26,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-14 17:54:26,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:54:26,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-14 17:54:26,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:54:26,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-14 17:54:26,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:54:26,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-14 17:54:26,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:54:26,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-14 17:54:26,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:54:26,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-14 17:54:26,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:54:26,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:54:26,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:54:26,568 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2021-12-14 17:54:26,568 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:54:26,569 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1903990996] [2021-12-14 17:54:26,569 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1903990996] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:54:26,569 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:54:26,569 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-14 17:54:26,569 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920717839] [2021-12-14 17:54:26,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:54:26,570 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-14 17:54:26,570 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:54:26,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-14 17:54:26,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-14 17:54:26,570 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) [2021-12-14 17:54:31,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:54:31,291 INFO L93 Difference]: Finished difference Result 33076 states and 46844 transitions. [2021-12-14 17:54:31,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-14 17:54:31,291 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 [2021-12-14 17:54:31,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:54:31,382 INFO L225 Difference]: With dead ends: 33076 [2021-12-14 17:54:31,382 INFO L226 Difference]: Without dead ends: 22029 [2021-12-14 17:54:31,455 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 [2021-12-14 17:54:31,456 INFO L933 BasicCegarLoop]: 1988 mSDtfsCounter, 1566 mSDsluCounter, 3254 mSDsCounter, 0 mSdLazyCounter, 1448 mSolverCounterSat, 569 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1780 SdHoareTripleChecker+Valid, 5242 SdHoareTripleChecker+Invalid, 2017 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 569 IncrementalHoareTripleChecker+Valid, 1448 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2021-12-14 17:54:31,458 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1780 Valid, 5242 Invalid, 2017 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [569 Valid, 1448 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2021-12-14 17:54:31,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22029 states. [2021-12-14 17:54:31,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22029 to 21003. [2021-12-14 17:54:31,972 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) [2021-12-14 17:54:32,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21003 states to 21003 states and 29397 transitions. [2021-12-14 17:54:32,039 INFO L78 Accepts]: Start accepts. Automaton has 21003 states and 29397 transitions. Word has length 85 [2021-12-14 17:54:32,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:54:32,040 INFO L470 AbstractCegarLoop]: Abstraction has 21003 states and 29397 transitions. [2021-12-14 17:54:32,040 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) [2021-12-14 17:54:32,040 INFO L276 IsEmpty]: Start isEmpty. Operand 21003 states and 29397 transitions. [2021-12-14 17:54:32,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-12-14 17:54:32,045 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:54:32,045 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] [2021-12-14 17:54:32,045 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-14 17:54:32,045 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:54:32,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:54:32,046 INFO L85 PathProgramCache]: Analyzing trace with hash -531508727, now seen corresponding path program 1 times [2021-12-14 17:54:32,046 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:54:32,046 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416425109] [2021-12-14 17:54:32,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:54:32,046 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:54:32,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:54:32,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:54:32,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:54:32,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-14 17:54:32,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:54:32,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-14 17:54:32,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:54:32,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-14 17:54:32,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:54:32,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-14 17:54:32,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:54:32,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-14 17:54:32,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:54:32,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-14 17:54:32,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:54:32,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-14 17:54:32,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:54:32,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-14 17:54:32,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:54:32,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-14 17:54:32,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:54:32,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:54:32,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:54:32,316 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2021-12-14 17:54:32,316 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:54:32,316 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416425109] [2021-12-14 17:54:32,316 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1416425109] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:54:32,316 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:54:32,316 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-14 17:54:32,317 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213055655] [2021-12-14 17:54:32,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:54:32,317 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-14 17:54:32,318 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:54:32,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-14 17:54:32,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-14 17:54:32,318 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) [2021-12-14 17:54:35,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:54:35,079 INFO L93 Difference]: Finished difference Result 63106 states and 88865 transitions. [2021-12-14 17:54:35,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-14 17:54:35,079 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 [2021-12-14 17:54:35,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:54:35,240 INFO L225 Difference]: With dead ends: 63106 [2021-12-14 17:54:35,240 INFO L226 Difference]: Without dead ends: 42133 [2021-12-14 17:54:35,297 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 [2021-12-14 17:54:35,299 INFO L933 BasicCegarLoop]: 2116 mSDtfsCounter, 1840 mSDsluCounter, 2452 mSDsCounter, 0 mSdLazyCounter, 823 mSolverCounterSat, 1004 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2055 SdHoareTripleChecker+Valid, 4568 SdHoareTripleChecker+Invalid, 1827 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1004 IncrementalHoareTripleChecker+Valid, 823 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2021-12-14 17:54:35,299 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2055 Valid, 4568 Invalid, 1827 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1004 Valid, 823 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2021-12-14 17:54:35,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42133 states. [2021-12-14 17:54:36,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42133 to 40181. [2021-12-14 17:54:36,272 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) [2021-12-14 17:54:36,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40181 states to 40181 states and 56060 transitions. [2021-12-14 17:54:36,539 INFO L78 Accepts]: Start accepts. Automaton has 40181 states and 56060 transitions. Word has length 87 [2021-12-14 17:54:36,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:54:36,540 INFO L470 AbstractCegarLoop]: Abstraction has 40181 states and 56060 transitions. [2021-12-14 17:54:36,541 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) [2021-12-14 17:54:36,541 INFO L276 IsEmpty]: Start isEmpty. Operand 40181 states and 56060 transitions. [2021-12-14 17:54:36,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-12-14 17:54:36,542 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:54:36,542 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] [2021-12-14 17:54:36,542 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-14 17:54:36,542 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:54:36,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:54:36,543 INFO L85 PathProgramCache]: Analyzing trace with hash 835779799, now seen corresponding path program 1 times [2021-12-14 17:54:36,543 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:54:36,543 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1754074877] [2021-12-14 17:54:36,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:54:36,543 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:54:36,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:54:36,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:54:36,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:54:36,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-14 17:54:36,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:54:36,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-14 17:54:36,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:54:36,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-14 17:54:36,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:54:36,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-14 17:54:36,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:54:36,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-14 17:54:36,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:54:36,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-14 17:54:36,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:54:36,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-14 17:54:36,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:54:36,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-14 17:54:36,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:54:36,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-14 17:54:36,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:54:36,679 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2021-12-14 17:54:36,679 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:54:36,679 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1754074877] [2021-12-14 17:54:36,679 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1754074877] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:54:36,679 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:54:36,680 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-14 17:54:36,680 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374739444] [2021-12-14 17:54:36,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:54:36,680 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-14 17:54:36,680 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:54:36,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-14 17:54:36,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-14 17:54:36,681 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) [2021-12-14 17:54:40,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:54:40,308 INFO L93 Difference]: Finished difference Result 48243 states and 66226 transitions. [2021-12-14 17:54:40,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-14 17:54:40,309 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 [2021-12-14 17:54:40,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:54:40,458 INFO L225 Difference]: With dead ends: 48243 [2021-12-14 17:54:40,458 INFO L226 Difference]: Without dead ends: 48239 [2021-12-14 17:54:40,477 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 [2021-12-14 17:54:40,478 INFO L933 BasicCegarLoop]: 1582 mSDtfsCounter, 1012 mSDsluCounter, 1413 mSDsCounter, 0 mSdLazyCounter, 655 mSolverCounterSat, 350 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1115 SdHoareTripleChecker+Valid, 2995 SdHoareTripleChecker+Invalid, 1005 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 350 IncrementalHoareTripleChecker+Valid, 655 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2021-12-14 17:54:40,479 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1115 Valid, 2995 Invalid, 1005 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [350 Valid, 655 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2021-12-14 17:54:40,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48239 states. [2021-12-14 17:54:41,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48239 to 45717. [2021-12-14 17:54:41,584 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) [2021-12-14 17:54:41,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45717 states to 45717 states and 62235 transitions. [2021-12-14 17:54:41,731 INFO L78 Accepts]: Start accepts. Automaton has 45717 states and 62235 transitions. Word has length 86 [2021-12-14 17:54:41,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:54:41,732 INFO L470 AbstractCegarLoop]: Abstraction has 45717 states and 62235 transitions. [2021-12-14 17:54:41,732 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) [2021-12-14 17:54:41,732 INFO L276 IsEmpty]: Start isEmpty. Operand 45717 states and 62235 transitions. [2021-12-14 17:54:41,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-12-14 17:54:41,734 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:54:41,734 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] [2021-12-14 17:54:41,734 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-14 17:54:41,735 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:54:41,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:54:41,735 INFO L85 PathProgramCache]: Analyzing trace with hash 138844034, now seen corresponding path program 1 times [2021-12-14 17:54:41,735 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:54:41,735 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [23224028] [2021-12-14 17:54:41,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:54:41,736 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:54:41,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:54:41,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:54:41,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:54:41,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-14 17:54:41,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:54:41,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-14 17:54:41,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:54:41,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-14 17:54:41,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:54:41,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-14 17:54:41,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:54:41,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-14 17:54:41,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:54:41,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-14 17:54:41,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:54:41,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-14 17:54:41,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:54:41,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-14 17:54:41,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:54:41,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-14 17:54:41,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:54:41,911 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2021-12-14 17:54:41,911 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:54:41,911 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [23224028] [2021-12-14 17:54:41,911 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [23224028] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:54:41,911 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:54:41,911 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-14 17:54:41,912 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438931656] [2021-12-14 17:54:41,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:54:41,912 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-14 17:54:41,912 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:54:41,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-14 17:54:41,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-14 17:54:41,913 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) [2021-12-14 17:54:46,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:54:46,016 INFO L93 Difference]: Finished difference Result 114799 states and 156015 transitions. [2021-12-14 17:54:46,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-14 17:54:46,017 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 [2021-12-14 17:54:46,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:54:46,279 INFO L225 Difference]: With dead ends: 114799 [2021-12-14 17:54:46,279 INFO L226 Difference]: Without dead ends: 69116 [2021-12-14 17:54:46,392 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 [2021-12-14 17:54:46,394 INFO L933 BasicCegarLoop]: 1705 mSDtfsCounter, 964 mSDsluCounter, 1957 mSDsCounter, 0 mSdLazyCounter, 785 mSolverCounterSat, 428 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1069 SdHoareTripleChecker+Valid, 3662 SdHoareTripleChecker+Invalid, 1213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 428 IncrementalHoareTripleChecker+Valid, 785 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2021-12-14 17:54:46,394 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1069 Valid, 3662 Invalid, 1213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [428 Valid, 785 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2021-12-14 17:54:46,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69116 states. [2021-12-14 17:54:48,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69116 to 64301. [2021-12-14 17:54:48,121 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) [2021-12-14 17:54:48,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64301 states to 64301 states and 86687 transitions. [2021-12-14 17:54:48,502 INFO L78 Accepts]: Start accepts. Automaton has 64301 states and 86687 transitions. Word has length 87 [2021-12-14 17:54:48,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:54:48,502 INFO L470 AbstractCegarLoop]: Abstraction has 64301 states and 86687 transitions. [2021-12-14 17:54:48,502 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) [2021-12-14 17:54:48,502 INFO L276 IsEmpty]: Start isEmpty. Operand 64301 states and 86687 transitions. [2021-12-14 17:54:48,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-12-14 17:54:48,503 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:54:48,503 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] [2021-12-14 17:54:48,503 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-14 17:54:48,504 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:54:48,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:54:48,504 INFO L85 PathProgramCache]: Analyzing trace with hash 8676666, now seen corresponding path program 1 times [2021-12-14 17:54:48,504 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:54:48,504 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1261810276] [2021-12-14 17:54:48,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:54:48,504 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:54:48,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:54:48,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:54:48,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:54:48,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-14 17:54:48,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:54:48,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-14 17:54:48,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:54:48,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-14 17:54:48,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:54:48,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-14 17:54:48,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:54:48,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-14 17:54:48,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:54:48,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-14 17:54:48,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:54:48,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-14 17:54:48,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:54:48,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-14 17:54:48,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:54:48,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-14 17:54:48,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:54:48,795 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2021-12-14 17:54:48,796 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:54:48,796 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1261810276] [2021-12-14 17:54:48,796 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1261810276] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:54:48,796 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:54:48,796 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-14 17:54:48,796 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380739774] [2021-12-14 17:54:48,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:54:48,797 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-14 17:54:48,797 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:54:48,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-14 17:54:48,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-14 17:54:48,798 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) [2021-12-14 17:54:52,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:54:52,058 INFO L93 Difference]: Finished difference Result 68461 states and 92768 transitions. [2021-12-14 17:54:52,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-14 17:54:52,058 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 [2021-12-14 17:54:52,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:54:52,409 INFO L225 Difference]: With dead ends: 68461 [2021-12-14 17:54:52,409 INFO L226 Difference]: Without dead ends: 68451 [2021-12-14 17:54:52,434 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 [2021-12-14 17:54:52,436 INFO L933 BasicCegarLoop]: 1525 mSDtfsCounter, 1474 mSDsluCounter, 749 mSDsCounter, 0 mSdLazyCounter, 479 mSolverCounterSat, 334 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1671 SdHoareTripleChecker+Valid, 2274 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 [2021-12-14 17:54:52,436 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1671 Valid, 2274 Invalid, 813 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [334 Valid, 479 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2021-12-14 17:54:52,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68451 states. [2021-12-14 17:54:53,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68451 to 64293. [2021-12-14 17:54:53,970 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) [2021-12-14 17:54:54,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64293 states to 64293 states and 86630 transitions. [2021-12-14 17:54:54,160 INFO L78 Accepts]: Start accepts. Automaton has 64293 states and 86630 transitions. Word has length 88 [2021-12-14 17:54:54,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:54:54,162 INFO L470 AbstractCegarLoop]: Abstraction has 64293 states and 86630 transitions. [2021-12-14 17:54:54,162 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) [2021-12-14 17:54:54,163 INFO L276 IsEmpty]: Start isEmpty. Operand 64293 states and 86630 transitions. [2021-12-14 17:54:54,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2021-12-14 17:54:54,168 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:54:54,168 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] [2021-12-14 17:54:54,168 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-14 17:54:54,168 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:54:54,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:54:54,169 INFO L85 PathProgramCache]: Analyzing trace with hash -1887041004, now seen corresponding path program 1 times [2021-12-14 17:54:54,169 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:54:54,169 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [60775333] [2021-12-14 17:54:54,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:54:54,169 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:54:54,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:54:54,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:54:54,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:54:54,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-14 17:54:54,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:54:54,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-14 17:54:54,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:54:54,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-14 17:54:54,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:54:54,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-14 17:54:54,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:54:54,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-14 17:54:54,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:54:54,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-14 17:54:54,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:54:54,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-14 17:54:54,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:54:54,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-14 17:54:54,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:54:54,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-14 17:54:54,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:54:54,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-14 17:54:54,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:54:54,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-14 17:54:54,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:54:54,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:54:54,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:54:54,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-14 17:54:54,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:54:54,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-12-14 17:54:54,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:54:54,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-12-14 17:54:54,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:54:54,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-14 17:54:54,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:54:54,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-12-14 17:54:54,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:54:54,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:54:54,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:54:54,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:54:54,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:54:54,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2021-12-14 17:54:54,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:54:54,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:54:54,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:54:54,390 INFO L134 CoverageAnalysis]: Checked inductivity of 207 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 204 trivial. 0 not checked. [2021-12-14 17:54:54,390 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:54:54,390 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [60775333] [2021-12-14 17:54:54,390 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [60775333] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:54:54,390 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:54:54,390 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-14 17:54:54,390 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460007178] [2021-12-14 17:54:54,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:54:54,391 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-14 17:54:54,391 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:54:54,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-14 17:54:54,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-14 17:54:54,392 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) [2021-12-14 17:54:58,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:54:58,867 INFO L93 Difference]: Finished difference Result 99419 states and 134141 transitions. [2021-12-14 17:54:58,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-14 17:54:58,870 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 [2021-12-14 17:54:58,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:54:58,988 INFO L225 Difference]: With dead ends: 99419 [2021-12-14 17:54:58,988 INFO L226 Difference]: Without dead ends: 35160 [2021-12-14 17:54:59,281 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 [2021-12-14 17:54:59,282 INFO L933 BasicCegarLoop]: 1455 mSDtfsCounter, 1769 mSDsluCounter, 1897 mSDsCounter, 0 mSdLazyCounter, 1332 mSolverCounterSat, 845 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2000 SdHoareTripleChecker+Valid, 3352 SdHoareTripleChecker+Invalid, 2177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 845 IncrementalHoareTripleChecker+Valid, 1332 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2021-12-14 17:54:59,282 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2000 Valid, 3352 Invalid, 2177 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [845 Valid, 1332 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2021-12-14 17:54:59,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35160 states. [2021-12-14 17:54:59,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35160 to 32426. [2021-12-14 17:54:59,989 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) [2021-12-14 17:55:00,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32426 states to 32426 states and 43701 transitions. [2021-12-14 17:55:00,095 INFO L78 Accepts]: Start accepts. Automaton has 32426 states and 43701 transitions. Word has length 168 [2021-12-14 17:55:00,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:55:00,096 INFO L470 AbstractCegarLoop]: Abstraction has 32426 states and 43701 transitions. [2021-12-14 17:55:00,096 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) [2021-12-14 17:55:00,096 INFO L276 IsEmpty]: Start isEmpty. Operand 32426 states and 43701 transitions. [2021-12-14 17:55:00,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2021-12-14 17:55:00,102 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:55:00,102 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] [2021-12-14 17:55:00,102 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-14 17:55:00,103 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:55:00,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:55:00,103 INFO L85 PathProgramCache]: Analyzing trace with hash -1091713676, now seen corresponding path program 1 times [2021-12-14 17:55:00,103 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:55:00,103 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906464491] [2021-12-14 17:55:00,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:55:00,104 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:55:00,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:55:00,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:55:00,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:55:00,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-14 17:55:00,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:55:00,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-14 17:55:00,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:55:00,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-14 17:55:00,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:55:00,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-14 17:55:00,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:55:00,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-14 17:55:00,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:55:00,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-14 17:55:00,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:55:00,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-14 17:55:00,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:55:00,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-14 17:55:00,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:55:00,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-14 17:55:00,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:55:00,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-14 17:55:00,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:55:00,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-14 17:55:00,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:55:00,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-14 17:55:00,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:55:00,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-14 17:55:00,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:55:00,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-14 17:55:00,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:55:00,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-14 17:55:00,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:55:00,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-12-14 17:55:00,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:55:00,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2021-12-14 17:55:00,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:55:00,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-12-14 17:55:00,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:55:00,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2021-12-14 17:55:00,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:55:00,436 INFO L134 CoverageAnalysis]: Checked inductivity of 614 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2021-12-14 17:55:00,436 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:55:00,437 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [906464491] [2021-12-14 17:55:00,437 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [906464491] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:55:00,437 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:55:00,437 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-14 17:55:00,437 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390980779] [2021-12-14 17:55:00,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:55:00,438 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-14 17:55:00,438 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:55:00,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-14 17:55:00,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-14 17:55:00,439 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)