./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--hwmon--abituguru3.ko-main.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f4b24e32 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--hwmon--abituguru3.ko-main.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 7d6844ab51374c8e656234daa6d7df2c3927c38bae9fcbeafc3fadf6f3b893b1 --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-13 23:47:06,196 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-13 23:47:06,198 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-13 23:47:06,243 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-13 23:47:06,244 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-13 23:47:06,245 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-13 23:47:06,247 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-13 23:47:06,249 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-13 23:47:06,250 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-13 23:47:06,254 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-13 23:47:06,254 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-13 23:47:06,255 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-13 23:47:06,255 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-13 23:47:06,257 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-13 23:47:06,258 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-13 23:47:06,262 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-13 23:47:06,262 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-13 23:47:06,264 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-13 23:47:06,265 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-13 23:47:06,272 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-13 23:47:06,274 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-13 23:47:06,275 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-13 23:47:06,275 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-13 23:47:06,276 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-13 23:47:06,278 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-13 23:47:06,283 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-13 23:47:06,283 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-13 23:47:06,284 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-13 23:47:06,285 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-13 23:47:06,285 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-13 23:47:06,286 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-13 23:47:06,286 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-13 23:47:06,288 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-13 23:47:06,288 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-13 23:47:06,289 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-13 23:47:06,290 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-13 23:47:06,290 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-13 23:47:06,290 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-13 23:47:06,291 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-13 23:47:06,291 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-13 23:47:06,291 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-13 23:47:06,293 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-13 23:47:06,294 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-07-13 23:47:06,326 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-13 23:47:06,327 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-13 23:47:06,327 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-13 23:47:06,327 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-13 23:47:06,328 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-13 23:47:06,328 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-13 23:47:06,329 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-13 23:47:06,329 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-13 23:47:06,329 INFO L138 SettingsManager]: * Use SBE=true [2022-07-13 23:47:06,330 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-13 23:47:06,330 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-13 23:47:06,330 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-13 23:47:06,330 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-13 23:47:06,330 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-13 23:47:06,331 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-13 23:47:06,331 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-13 23:47:06,331 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-13 23:47:06,331 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-13 23:47:06,331 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-13 23:47:06,333 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-13 23:47:06,333 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-13 23:47:06,333 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 23:47:06,333 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-13 23:47:06,333 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-13 23:47:06,334 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-13 23:47:06,334 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-13 23:47:06,334 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-13 23:47:06,334 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-13 23:47:06,334 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-13 23:47:06,334 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-13 23:47:06,335 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7d6844ab51374c8e656234daa6d7df2c3927c38bae9fcbeafc3fadf6f3b893b1 [2022-07-13 23:47:06,526 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-13 23:47:06,548 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-13 23:47:06,551 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-13 23:47:06,552 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-13 23:47:06,553 INFO L275 PluginConnector]: CDTParser initialized [2022-07-13 23:47:06,554 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--hwmon--abituguru3.ko-main.cil.out.i [2022-07-13 23:47:06,624 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4314c5831/2eb16c7af9214037a55f21e150e2793b/FLAGc34c6a4a0 [2022-07-13 23:47:07,195 INFO L306 CDTParser]: Found 1 translation units. [2022-07-13 23:47:07,196 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--hwmon--abituguru3.ko-main.cil.out.i [2022-07-13 23:47:07,216 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4314c5831/2eb16c7af9214037a55f21e150e2793b/FLAGc34c6a4a0 [2022-07-13 23:47:07,354 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4314c5831/2eb16c7af9214037a55f21e150e2793b [2022-07-13 23:47:07,356 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-13 23:47:07,357 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-13 23:47:07,358 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-13 23:47:07,358 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-13 23:47:07,362 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-13 23:47:07,363 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 11:47:07" (1/1) ... [2022-07-13 23:47:07,364 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3aa723e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:47:07, skipping insertion in model container [2022-07-13 23:47:07,364 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 11:47:07" (1/1) ... [2022-07-13 23:47:07,369 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-13 23:47:07,448 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-13 23:47:08,174 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--hwmon--abituguru3.ko-main.cil.out.i[132927,132940] [2022-07-13 23:47:08,222 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 23:47:08,327 INFO L203 MainTranslator]: Completed pre-run [2022-07-13 23:47:08,448 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--hwmon--abituguru3.ko-main.cil.out.i[132927,132940] [2022-07-13 23:47:08,458 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 23:47:08,652 INFO L208 MainTranslator]: Completed translation [2022-07-13 23:47:08,657 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:47:08 WrapperNode [2022-07-13 23:47:08,671 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-13 23:47:08,673 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-13 23:47:08,673 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-13 23:47:08,673 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-13 23:47:08,680 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:47:08" (1/1) ... [2022-07-13 23:47:08,776 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:47:08" (1/1) ... [2022-07-13 23:47:08,950 INFO L137 Inliner]: procedures = 133, calls = 4943, calls flagged for inlining = 57, calls inlined = 51, statements flattened = 6018 [2022-07-13 23:47:08,951 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-13 23:47:08,952 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-13 23:47:08,952 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-13 23:47:08,952 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-13 23:47:08,959 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:47:08" (1/1) ... [2022-07-13 23:47:08,960 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:47:08" (1/1) ... [2022-07-13 23:47:09,058 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:47:08" (1/1) ... [2022-07-13 23:47:09,059 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:47:08" (1/1) ... [2022-07-13 23:47:09,167 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:47:08" (1/1) ... [2022-07-13 23:47:09,177 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:47:08" (1/1) ... [2022-07-13 23:47:09,195 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:47:08" (1/1) ... [2022-07-13 23:47:09,233 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-13 23:47:09,236 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-13 23:47:09,237 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-13 23:47:09,237 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-13 23:47:09,238 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:47:08" (1/1) ... [2022-07-13 23:47:09,244 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 23:47:09,254 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 23:47:09,272 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) [2022-07-13 23:47:09,288 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 [2022-07-13 23:47:09,311 INFO L130 BoogieDeclarations]: Found specification of procedure abituguru3_wait_while_busy [2022-07-13 23:47:09,311 INFO L138 BoogieDeclarations]: Found implementation of procedure abituguru3_wait_while_busy [2022-07-13 23:47:09,312 INFO L130 BoogieDeclarations]: Found specification of procedure dev_get_drvdata [2022-07-13 23:47:09,312 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_get_drvdata [2022-07-13 23:47:09,312 INFO L130 BoogieDeclarations]: Found specification of procedure abituguru3_wait_for_read [2022-07-13 23:47:09,312 INFO L138 BoogieDeclarations]: Found implementation of procedure abituguru3_wait_for_read [2022-07-13 23:47:09,313 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2022-07-13 23:47:09,313 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2022-07-13 23:47:09,313 INFO L130 BoogieDeclarations]: Found specification of procedure platform_driver_unregister [2022-07-13 23:47:09,313 INFO L138 BoogieDeclarations]: Found implementation of procedure platform_driver_unregister [2022-07-13 23:47:09,316 INFO L130 BoogieDeclarations]: Found specification of procedure dmi_get_system_info [2022-07-13 23:47:09,316 INFO L138 BoogieDeclarations]: Found implementation of procedure dmi_get_system_info [2022-07-13 23:47:09,316 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-13 23:47:09,317 INFO L130 BoogieDeclarations]: Found specification of procedure abituguru3_read [2022-07-13 23:47:09,317 INFO L138 BoogieDeclarations]: Found implementation of procedure abituguru3_read [2022-07-13 23:47:09,317 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-07-13 23:47:09,317 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-07-13 23:47:09,318 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-13 23:47:09,318 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-07-13 23:47:09,318 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-07-13 23:47:09,318 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-07-13 23:47:09,318 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-07-13 23:47:09,319 INFO L130 BoogieDeclarations]: Found specification of procedure device_create_file [2022-07-13 23:47:09,319 INFO L138 BoogieDeclarations]: Found implementation of procedure device_create_file [2022-07-13 23:47:09,319 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_update_lock_of_abituguru3_data [2022-07-13 23:47:09,319 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_update_lock_of_abituguru3_data [2022-07-13 23:47:09,319 INFO L130 BoogieDeclarations]: Found specification of procedure abituguru3_suspend [2022-07-13 23:47:09,319 INFO L138 BoogieDeclarations]: Found implementation of procedure abituguru3_suspend [2022-07-13 23:47:09,319 INFO L130 BoogieDeclarations]: Found specification of procedure abituguru3_read_increment_offset [2022-07-13 23:47:09,320 INFO L138 BoogieDeclarations]: Found implementation of procedure abituguru3_read_increment_offset [2022-07-13 23:47:09,320 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-13 23:47:09,320 INFO L130 BoogieDeclarations]: Found specification of procedure inb_p [2022-07-13 23:47:09,320 INFO L138 BoogieDeclarations]: Found implementation of procedure inb_p [2022-07-13 23:47:09,320 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2022-07-13 23:47:09,320 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2022-07-13 23:47:09,320 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-13 23:47:09,321 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-13 23:47:09,321 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-13 23:47:09,321 INFO L130 BoogieDeclarations]: Found specification of procedure abituguru3_update_device [2022-07-13 23:47:09,321 INFO L138 BoogieDeclarations]: Found implementation of procedure abituguru3_update_device [2022-07-13 23:47:09,322 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-13 23:47:09,322 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-13 23:47:09,322 INFO L130 BoogieDeclarations]: Found specification of procedure platform_set_drvdata [2022-07-13 23:47:09,322 INFO L138 BoogieDeclarations]: Found implementation of procedure platform_set_drvdata [2022-07-13 23:47:09,322 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-07-13 23:47:09,322 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_update_lock_of_abituguru3_data [2022-07-13 23:47:09,322 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_update_lock_of_abituguru3_data [2022-07-13 23:47:09,323 INFO L130 BoogieDeclarations]: Found specification of procedure strcspn [2022-07-13 23:47:09,323 INFO L130 BoogieDeclarations]: Found specification of procedure inb [2022-07-13 23:47:09,323 INFO L138 BoogieDeclarations]: Found implementation of procedure inb [2022-07-13 23:47:09,323 INFO L130 BoogieDeclarations]: Found specification of procedure outb [2022-07-13 23:47:09,323 INFO L138 BoogieDeclarations]: Found implementation of procedure outb [2022-07-13 23:47:09,324 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-13 23:47:09,324 INFO L130 BoogieDeclarations]: Found specification of procedure device_remove_file [2022-07-13 23:47:09,324 INFO L138 BoogieDeclarations]: Found implementation of procedure device_remove_file [2022-07-13 23:47:09,324 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-13 23:47:09,325 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-13 23:47:09,325 INFO L130 BoogieDeclarations]: Found specification of procedure abituguru3_resume [2022-07-13 23:47:09,326 INFO L138 BoogieDeclarations]: Found implementation of procedure abituguru3_resume [2022-07-13 23:47:09,326 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2022-07-13 23:47:09,327 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2022-07-13 23:47:09,653 INFO L234 CfgBuilder]: Building ICFG [2022-07-13 23:47:09,654 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-13 23:47:19,339 INFO L275 CfgBuilder]: Performing block encoding [2022-07-13 23:47:19,355 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-13 23:47:19,356 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-13 23:47:19,370 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 11:47:19 BoogieIcfgContainer [2022-07-13 23:47:19,370 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-13 23:47:19,372 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-13 23:47:19,374 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-13 23:47:19,377 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-13 23:47:19,377 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.07 11:47:07" (1/3) ... [2022-07-13 23:47:19,378 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3706ca2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 11:47:19, skipping insertion in model container [2022-07-13 23:47:19,378 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:47:08" (2/3) ... [2022-07-13 23:47:19,378 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3706ca2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 11:47:19, skipping insertion in model container [2022-07-13 23:47:19,378 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 11:47:19" (3/3) ... [2022-07-13 23:47:19,380 INFO L111 eAbstractionObserver]: Analyzing ICFG 32_7a_cilled_linux-3.8-rc1-drivers--hwmon--abituguru3.ko-main.cil.out.i [2022-07-13 23:47:19,395 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-13 23:47:19,395 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-13 23:47:19,470 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 23:47:19,480 INFO L357 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, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@297b1cf6, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@43603d1e [2022-07-13 23:47:19,481 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-13 23:47:19,492 INFO L276 IsEmpty]: Start isEmpty. Operand has 499 states, 395 states have (on average 1.4329113924050634) internal successors, (566), 404 states have internal predecessors, (566), 78 states have call successors, (78), 24 states have call predecessors, (78), 24 states have return successors, (78), 78 states have call predecessors, (78), 78 states have call successors, (78) [2022-07-13 23:47:19,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-07-13 23:47:19,504 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 23:47:19,504 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 23:47:19,505 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 23:47:19,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 23:47:19,510 INFO L85 PathProgramCache]: Analyzing trace with hash -1860140379, now seen corresponding path program 1 times [2022-07-13 23:47:19,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 23:47:19,519 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [560024952] [2022-07-13 23:47:19,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 23:47:19,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 23:47:20,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:47:20,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-13 23:47:20,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:47:20,570 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 23:47:20,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 23:47:20,570 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [560024952] [2022-07-13 23:47:20,571 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [560024952] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 23:47:20,571 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 23:47:20,571 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 23:47:20,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426047207] [2022-07-13 23:47:20,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 23:47:20,578 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 23:47:20,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 23:47:20,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 23:47:20,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 23:47:20,604 INFO L87 Difference]: Start difference. First operand has 499 states, 395 states have (on average 1.4329113924050634) internal successors, (566), 404 states have internal predecessors, (566), 78 states have call successors, (78), 24 states have call predecessors, (78), 24 states have return successors, (78), 78 states have call predecessors, (78), 78 states have call successors, (78) Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-13 23:47:21,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 23:47:21,131 INFO L93 Difference]: Finished difference Result 1407 states and 2087 transitions. [2022-07-13 23:47:21,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 23:47:21,136 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 21 [2022-07-13 23:47:21,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 23:47:21,159 INFO L225 Difference]: With dead ends: 1407 [2022-07-13 23:47:21,159 INFO L226 Difference]: Without dead ends: 907 [2022-07-13 23:47:21,168 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 23:47:21,173 INFO L413 NwaCegarLoop]: 1029 mSDtfsCounter, 682 mSDsluCounter, 613 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 682 SdHoareTripleChecker+Valid, 1642 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-13 23:47:21,175 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [682 Valid, 1642 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-13 23:47:21,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 907 states. [2022-07-13 23:47:21,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 907 to 903. [2022-07-13 23:47:21,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 903 states, 714 states have (on average 1.4341736694677871) internal successors, (1024), 724 states have internal predecessors, (1024), 143 states have call successors, (143), 46 states have call predecessors, (143), 45 states have return successors, (138), 138 states have call predecessors, (138), 138 states have call successors, (138) [2022-07-13 23:47:21,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 903 states to 903 states and 1305 transitions. [2022-07-13 23:47:21,293 INFO L78 Accepts]: Start accepts. Automaton has 903 states and 1305 transitions. Word has length 21 [2022-07-13 23:47:21,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 23:47:21,294 INFO L495 AbstractCegarLoop]: Abstraction has 903 states and 1305 transitions. [2022-07-13 23:47:21,294 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-13 23:47:21,294 INFO L276 IsEmpty]: Start isEmpty. Operand 903 states and 1305 transitions. [2022-07-13 23:47:21,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-07-13 23:47:21,297 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 23:47:21,297 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 23:47:21,298 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-13 23:47:21,298 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 23:47:21,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 23:47:21,298 INFO L85 PathProgramCache]: Analyzing trace with hash -1341252181, now seen corresponding path program 1 times [2022-07-13 23:47:21,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 23:47:21,299 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1292253626] [2022-07-13 23:47:21,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 23:47:21,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 23:47:21,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:47:21,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 23:47:21,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:47:21,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:47:21,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:47:21,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 23:47:21,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 23:47:21,950 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1292253626] [2022-07-13 23:47:21,950 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1292253626] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 23:47:21,950 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 23:47:21,950 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 23:47:21,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784569679] [2022-07-13 23:47:21,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 23:47:21,952 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 23:47:21,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 23:47:21,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 23:47:21,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 23:47:21,954 INFO L87 Difference]: Start difference. First operand 903 states and 1305 transitions. Second operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 3 states have internal predecessors, (21), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-13 23:47:23,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 23:47:23,255 INFO L93 Difference]: Finished difference Result 2674 states and 3857 transitions. [2022-07-13 23:47:23,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 23:47:23,256 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 3 states have internal predecessors, (21), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 28 [2022-07-13 23:47:23,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 23:47:23,268 INFO L225 Difference]: With dead ends: 2674 [2022-07-13 23:47:23,269 INFO L226 Difference]: Without dead ends: 1774 [2022-07-13 23:47:23,272 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 23:47:23,273 INFO L413 NwaCegarLoop]: 975 mSDtfsCounter, 700 mSDsluCounter, 836 mSDsCounter, 0 mSdLazyCounter, 501 mSolverCounterSat, 232 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 769 SdHoareTripleChecker+Valid, 1811 SdHoareTripleChecker+Invalid, 733 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 232 IncrementalHoareTripleChecker+Valid, 501 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-07-13 23:47:23,274 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [769 Valid, 1811 Invalid, 733 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [232 Valid, 501 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-07-13 23:47:23,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1774 states. [2022-07-13 23:47:23,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1774 to 1577. [2022-07-13 23:47:23,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1577 states, 1235 states have (on average 1.4008097165991902) internal successors, (1730), 1251 states have internal predecessors, (1730), 256 states have call successors, (256), 86 states have call predecessors, (256), 85 states have return successors, (251), 251 states have call predecessors, (251), 251 states have call successors, (251) [2022-07-13 23:47:23,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1577 states to 1577 states and 2237 transitions. [2022-07-13 23:47:23,345 INFO L78 Accepts]: Start accepts. Automaton has 1577 states and 2237 transitions. Word has length 28 [2022-07-13 23:47:23,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 23:47:23,345 INFO L495 AbstractCegarLoop]: Abstraction has 1577 states and 2237 transitions. [2022-07-13 23:47:23,346 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 3 states have internal predecessors, (21), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-13 23:47:23,346 INFO L276 IsEmpty]: Start isEmpty. Operand 1577 states and 2237 transitions. [2022-07-13 23:47:23,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-07-13 23:47:23,347 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 23:47:23,348 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 23:47:23,348 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-13 23:47:23,348 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 23:47:23,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 23:47:23,349 INFO L85 PathProgramCache]: Analyzing trace with hash 1231327051, now seen corresponding path program 1 times [2022-07-13 23:47:23,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 23:47:23,349 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416788778] [2022-07-13 23:47:23,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 23:47:23,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 23:47:23,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:47:23,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 23:47:23,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:47:23,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:47:23,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:47:23,907 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 23:47:23,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 23:47:23,908 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416788778] [2022-07-13 23:47:23,908 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1416788778] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 23:47:23,908 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 23:47:23,909 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 23:47:23,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245614702] [2022-07-13 23:47:23,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 23:47:23,910 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 23:47:23,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 23:47:23,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 23:47:23,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 23:47:23,911 INFO L87 Difference]: Start difference. First operand 1577 states and 2237 transitions. Second operand has 7 states, 7 states have (on average 4.0) internal successors, (28), 6 states have internal predecessors, (28), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-13 23:47:26,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 23:47:26,385 INFO L93 Difference]: Finished difference Result 5284 states and 7954 transitions. [2022-07-13 23:47:26,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-13 23:47:26,386 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.0) internal successors, (28), 6 states have internal predecessors, (28), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 33 [2022-07-13 23:47:26,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 23:47:26,414 INFO L225 Difference]: With dead ends: 5284 [2022-07-13 23:47:26,415 INFO L226 Difference]: Without dead ends: 3710 [2022-07-13 23:47:26,427 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2022-07-13 23:47:26,435 INFO L413 NwaCegarLoop]: 1425 mSDtfsCounter, 1648 mSDsluCounter, 4699 mSDsCounter, 0 mSdLazyCounter, 1414 mSolverCounterSat, 284 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1722 SdHoareTripleChecker+Valid, 6124 SdHoareTripleChecker+Invalid, 1698 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 284 IncrementalHoareTripleChecker+Valid, 1414 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-07-13 23:47:26,435 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1722 Valid, 6124 Invalid, 1698 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [284 Valid, 1414 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-07-13 23:47:26,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3710 states. [2022-07-13 23:47:26,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3710 to 1599. [2022-07-13 23:47:26,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1599 states, 1253 states have (on average 1.3998403830806065) internal successors, (1754), 1269 states have internal predecessors, (1754), 260 states have call successors, (260), 86 states have call predecessors, (260), 85 states have return successors, (255), 255 states have call predecessors, (255), 255 states have call successors, (255) [2022-07-13 23:47:26,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1599 states to 1599 states and 2269 transitions. [2022-07-13 23:47:26,572 INFO L78 Accepts]: Start accepts. Automaton has 1599 states and 2269 transitions. Word has length 33 [2022-07-13 23:47:26,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 23:47:26,572 INFO L495 AbstractCegarLoop]: Abstraction has 1599 states and 2269 transitions. [2022-07-13 23:47:26,573 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.0) internal successors, (28), 6 states have internal predecessors, (28), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-13 23:47:26,573 INFO L276 IsEmpty]: Start isEmpty. Operand 1599 states and 2269 transitions. [2022-07-13 23:47:26,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-07-13 23:47:26,577 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 23:47:26,577 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 23:47:26,578 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-13 23:47:26,578 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 23:47:26,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 23:47:26,579 INFO L85 PathProgramCache]: Analyzing trace with hash -574111283, now seen corresponding path program 1 times [2022-07-13 23:47:26,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 23:47:26,579 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [975923768] [2022-07-13 23:47:26,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 23:47:26,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 23:47:26,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:47:27,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 23:47:27,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:47:27,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:47:27,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:47:27,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 23:47:27,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 23:47:27,184 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [975923768] [2022-07-13 23:47:27,184 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [975923768] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 23:47:27,184 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 23:47:27,185 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 23:47:27,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624675945] [2022-07-13 23:47:27,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 23:47:27,189 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 23:47:27,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 23:47:27,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 23:47:27,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 23:47:27,191 INFO L87 Difference]: Start difference. First operand 1599 states and 2269 transitions. Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-13 23:47:27,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 23:47:27,837 INFO L93 Difference]: Finished difference Result 1779 states and 2570 transitions. [2022-07-13 23:47:27,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 23:47:27,842 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), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 33 [2022-07-13 23:47:27,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 23:47:27,856 INFO L225 Difference]: With dead ends: 1779 [2022-07-13 23:47:27,856 INFO L226 Difference]: Without dead ends: 1776 [2022-07-13 23:47:27,857 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 23:47:27,866 INFO L413 NwaCegarLoop]: 718 mSDtfsCounter, 818 mSDsluCounter, 383 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 204 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 857 SdHoareTripleChecker+Valid, 1101 SdHoareTripleChecker+Invalid, 311 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 204 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-13 23:47:27,867 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [857 Valid, 1101 Invalid, 311 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [204 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-13 23:47:27,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1776 states. [2022-07-13 23:47:27,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1776 to 1598. [2022-07-13 23:47:27,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1598 states, 1253 states have (on average 1.3990422984836393) internal successors, (1753), 1268 states have internal predecessors, (1753), 259 states have call successors, (259), 86 states have call predecessors, (259), 85 states have return successors, (255), 255 states have call predecessors, (255), 255 states have call successors, (255) [2022-07-13 23:47:27,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1598 states to 1598 states and 2267 transitions. [2022-07-13 23:47:27,940 INFO L78 Accepts]: Start accepts. Automaton has 1598 states and 2267 transitions. Word has length 33 [2022-07-13 23:47:27,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 23:47:27,940 INFO L495 AbstractCegarLoop]: Abstraction has 1598 states and 2267 transitions. [2022-07-13 23:47:27,941 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-13 23:47:27,941 INFO L276 IsEmpty]: Start isEmpty. Operand 1598 states and 2267 transitions. [2022-07-13 23:47:27,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-07-13 23:47:27,944 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 23:47:27,944 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 23:47:27,944 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-13 23:47:27,945 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 23:47:27,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 23:47:27,945 INFO L85 PathProgramCache]: Analyzing trace with hash -617764655, now seen corresponding path program 1 times [2022-07-13 23:47:27,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 23:47:27,945 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1349895380] [2022-07-13 23:47:27,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 23:47:27,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 23:47:28,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:47:28,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 23:47:28,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:47:28,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:47:28,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:47:28,491 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 23:47:28,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 23:47:28,492 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1349895380] [2022-07-13 23:47:28,492 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1349895380] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 23:47:28,492 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 23:47:28,492 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 23:47:28,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644759666] [2022-07-13 23:47:28,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 23:47:28,493 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 23:47:28,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 23:47:28,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 23:47:28,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 23:47:28,494 INFO L87 Difference]: Start difference. First operand 1598 states and 2267 transitions. Second operand has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-13 23:47:29,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 23:47:29,141 INFO L93 Difference]: Finished difference Result 1778 states and 2568 transitions. [2022-07-13 23:47:29,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 23:47:29,141 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 34 [2022-07-13 23:47:29,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 23:47:29,150 INFO L225 Difference]: With dead ends: 1778 [2022-07-13 23:47:29,150 INFO L226 Difference]: Without dead ends: 1775 [2022-07-13 23:47:29,151 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 23:47:29,152 INFO L413 NwaCegarLoop]: 716 mSDtfsCounter, 815 mSDsluCounter, 382 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 203 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 854 SdHoareTripleChecker+Valid, 1098 SdHoareTripleChecker+Invalid, 310 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 203 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-13 23:47:29,152 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [854 Valid, 1098 Invalid, 310 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [203 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-13 23:47:29,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1775 states. [2022-07-13 23:47:29,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1775 to 1597. [2022-07-13 23:47:29,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1597 states, 1253 states have (on average 1.398244213886672) internal successors, (1752), 1267 states have internal predecessors, (1752), 258 states have call successors, (258), 86 states have call predecessors, (258), 85 states have return successors, (255), 255 states have call predecessors, (255), 255 states have call successors, (255) [2022-07-13 23:47:29,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1597 states to 1597 states and 2265 transitions. [2022-07-13 23:47:29,217 INFO L78 Accepts]: Start accepts. Automaton has 1597 states and 2265 transitions. Word has length 34 [2022-07-13 23:47:29,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 23:47:29,217 INFO L495 AbstractCegarLoop]: Abstraction has 1597 states and 2265 transitions. [2022-07-13 23:47:29,218 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-13 23:47:29,218 INFO L276 IsEmpty]: Start isEmpty. Operand 1597 states and 2265 transitions. [2022-07-13 23:47:29,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-07-13 23:47:29,219 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 23:47:29,219 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 23:47:29,219 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-13 23:47:29,219 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 23:47:29,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 23:47:29,220 INFO L85 PathProgramCache]: Analyzing trace with hash -1971014320, now seen corresponding path program 1 times [2022-07-13 23:47:29,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 23:47:29,220 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2139676162] [2022-07-13 23:47:29,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 23:47:29,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 23:47:29,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:47:29,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 23:47:29,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:47:29,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:47:29,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:47:29,670 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 23:47:29,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 23:47:29,670 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2139676162] [2022-07-13 23:47:29,670 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2139676162] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 23:47:29,670 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 23:47:29,670 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 23:47:29,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898203600] [2022-07-13 23:47:29,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 23:47:29,671 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 23:47:29,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 23:47:29,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 23:47:29,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 23:47:29,672 INFO L87 Difference]: Start difference. First operand 1597 states and 2265 transitions. Second operand has 4 states, 4 states have (on average 7.5) internal successors, (30), 3 states have internal predecessors, (30), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-13 23:47:30,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 23:47:30,716 INFO L93 Difference]: Finished difference Result 4611 states and 6639 transitions. [2022-07-13 23:47:30,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 23:47:30,717 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 3 states have internal predecessors, (30), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 35 [2022-07-13 23:47:30,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 23:47:30,732 INFO L225 Difference]: With dead ends: 4611 [2022-07-13 23:47:30,732 INFO L226 Difference]: Without dead ends: 3005 [2022-07-13 23:47:30,737 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 23:47:30,738 INFO L413 NwaCegarLoop]: 740 mSDtfsCounter, 896 mSDsluCounter, 811 mSDsCounter, 0 mSdLazyCounter, 414 mSolverCounterSat, 255 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 955 SdHoareTripleChecker+Valid, 1551 SdHoareTripleChecker+Invalid, 669 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 255 IncrementalHoareTripleChecker+Valid, 414 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-13 23:47:30,739 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [955 Valid, 1551 Invalid, 669 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [255 Valid, 414 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-13 23:47:30,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3005 states. [2022-07-13 23:47:30,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3005 to 2778. [2022-07-13 23:47:30,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2778 states, 2185 states have (on average 1.3977116704805492) internal successors, (3054), 2222 states have internal predecessors, (3054), 455 states have call successors, (455), 151 states have call predecessors, (455), 137 states have return successors, (445), 428 states have call predecessors, (445), 445 states have call successors, (445) [2022-07-13 23:47:30,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2778 states to 2778 states and 3954 transitions. [2022-07-13 23:47:30,858 INFO L78 Accepts]: Start accepts. Automaton has 2778 states and 3954 transitions. Word has length 35 [2022-07-13 23:47:30,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 23:47:30,859 INFO L495 AbstractCegarLoop]: Abstraction has 2778 states and 3954 transitions. [2022-07-13 23:47:30,859 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 3 states have internal predecessors, (30), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-13 23:47:30,859 INFO L276 IsEmpty]: Start isEmpty. Operand 2778 states and 3954 transitions. [2022-07-13 23:47:30,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-07-13 23:47:30,861 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 23:47:30,862 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 23:47:30,862 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-13 23:47:30,862 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 23:47:30,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 23:47:30,863 INFO L85 PathProgramCache]: Analyzing trace with hash -2101219672, now seen corresponding path program 1 times [2022-07-13 23:47:30,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 23:47:30,863 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1903780218] [2022-07-13 23:47:30,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 23:47:30,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 23:47:31,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:47:31,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 23:47:31,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:47:31,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:47:31,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:47:31,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-13 23:47:31,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:47:31,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:47:31,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:47:31,347 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-13 23:47:31,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 23:47:31,348 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1903780218] [2022-07-13 23:47:31,348 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1903780218] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 23:47:31,348 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 23:47:31,348 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 23:47:31,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992366792] [2022-07-13 23:47:31,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 23:47:31,349 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 23:47:31,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 23:47:31,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 23:47:31,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 23:47:31,350 INFO L87 Difference]: Start difference. First operand 2778 states and 3954 transitions. Second operand has 4 states, 4 states have (on average 10.25) internal successors, (41), 3 states have internal predecessors, (41), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-07-13 23:47:32,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 23:47:32,713 INFO L93 Difference]: Finished difference Result 7242 states and 10447 transitions. [2022-07-13 23:47:32,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 23:47:32,713 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 3 states have internal predecessors, (41), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 55 [2022-07-13 23:47:32,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 23:47:32,736 INFO L225 Difference]: With dead ends: 7242 [2022-07-13 23:47:32,736 INFO L226 Difference]: Without dead ends: 4467 [2022-07-13 23:47:32,745 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 23:47:32,746 INFO L413 NwaCegarLoop]: 978 mSDtfsCounter, 846 mSDsluCounter, 942 mSDsCounter, 0 mSdLazyCounter, 549 mSolverCounterSat, 251 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 915 SdHoareTripleChecker+Valid, 1920 SdHoareTripleChecker+Invalid, 800 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 251 IncrementalHoareTripleChecker+Valid, 549 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-07-13 23:47:32,746 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [915 Valid, 1920 Invalid, 800 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [251 Valid, 549 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-07-13 23:47:32,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4467 states. [2022-07-13 23:47:32,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4467 to 4138. [2022-07-13 23:47:32,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4138 states, 3275 states have (on average 1.3880916030534352) internal successors, (4546), 3324 states have internal predecessors, (4546), 659 states have call successors, (659), 221 states have call predecessors, (659), 203 states have return successors, (649), 628 states have call predecessors, (649), 649 states have call successors, (649) [2022-07-13 23:47:32,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4138 states to 4138 states and 5854 transitions. [2022-07-13 23:47:32,987 INFO L78 Accepts]: Start accepts. Automaton has 4138 states and 5854 transitions. Word has length 55 [2022-07-13 23:47:32,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 23:47:32,987 INFO L495 AbstractCegarLoop]: Abstraction has 4138 states and 5854 transitions. [2022-07-13 23:47:32,988 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 3 states have internal predecessors, (41), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-07-13 23:47:32,988 INFO L276 IsEmpty]: Start isEmpty. Operand 4138 states and 5854 transitions. [2022-07-13 23:47:32,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-07-13 23:47:32,994 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 23:47:32,994 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 23:47:32,994 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-13 23:47:32,995 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 23:47:32,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 23:47:32,995 INFO L85 PathProgramCache]: Analyzing trace with hash 196374771, now seen corresponding path program 1 times [2022-07-13 23:47:32,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 23:47:32,995 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [324535957] [2022-07-13 23:47:32,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 23:47:32,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 23:47:33,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:47:33,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 23:47:33,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:47:33,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:47:33,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:47:33,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-13 23:47:33,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:47:33,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:47:33,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:47:33,466 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-07-13 23:47:33,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 23:47:33,467 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [324535957] [2022-07-13 23:47:33,467 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [324535957] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 23:47:33,467 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 23:47:33,467 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 23:47:33,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473593051] [2022-07-13 23:47:33,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 23:47:33,469 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 23:47:33,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 23:47:33,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 23:47:33,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 23:47:33,470 INFO L87 Difference]: Start difference. First operand 4138 states and 5854 transitions. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 3 states have internal predecessors, (59), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-07-13 23:47:34,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 23:47:34,899 INFO L93 Difference]: Finished difference Result 10056 states and 14407 transitions. [2022-07-13 23:47:34,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 23:47:34,900 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 3 states have internal predecessors, (59), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 75 [2022-07-13 23:47:34,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 23:47:34,928 INFO L225 Difference]: With dead ends: 10056 [2022-07-13 23:47:34,928 INFO L226 Difference]: Without dead ends: 5921 [2022-07-13 23:47:34,941 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 23:47:34,941 INFO L413 NwaCegarLoop]: 1228 mSDtfsCounter, 794 mSDsluCounter, 1073 mSDsCounter, 0 mSdLazyCounter, 546 mSolverCounterSat, 225 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 867 SdHoareTripleChecker+Valid, 2301 SdHoareTripleChecker+Invalid, 771 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 225 IncrementalHoareTripleChecker+Valid, 546 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-13 23:47:34,942 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [867 Valid, 2301 Invalid, 771 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [225 Valid, 546 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-13 23:47:34,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5921 states. [2022-07-13 23:47:35,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5921 to 5498. [2022-07-13 23:47:35,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5498 states, 4365 states have (on average 1.3832760595647193) internal successors, (6038), 4426 states have internal predecessors, (6038), 863 states have call successors, (863), 291 states have call predecessors, (863), 269 states have return successors, (853), 828 states have call predecessors, (853), 853 states have call successors, (853) [2022-07-13 23:47:35,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5498 states to 5498 states and 7754 transitions. [2022-07-13 23:47:35,208 INFO L78 Accepts]: Start accepts. Automaton has 5498 states and 7754 transitions. Word has length 75 [2022-07-13 23:47:35,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 23:47:35,209 INFO L495 AbstractCegarLoop]: Abstraction has 5498 states and 7754 transitions. [2022-07-13 23:47:35,210 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 3 states have internal predecessors, (59), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-07-13 23:47:35,210 INFO L276 IsEmpty]: Start isEmpty. Operand 5498 states and 7754 transitions. [2022-07-13 23:47:35,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-07-13 23:47:35,214 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 23:47:35,214 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 23:47:35,214 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-13 23:47:35,214 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 23:47:35,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 23:47:35,215 INFO L85 PathProgramCache]: Analyzing trace with hash -1785936298, now seen corresponding path program 1 times [2022-07-13 23:47:35,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 23:47:35,215 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846630084] [2022-07-13 23:47:35,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 23:47:35,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 23:47:35,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:47:35,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-13 23:47:35,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:47:35,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-13 23:47:35,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:47:35,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-13 23:47:35,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:47:35,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-13 23:47:35,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:47:35,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:47:35,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:47:35,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 23:47:35,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:47:35,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:47:35,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:47:35,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-13 23:47:35,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:47:35,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:47:35,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:47:35,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-13 23:47:35,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:47:35,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-13 23:47:35,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:47:35,682 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-13 23:47:35,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 23:47:35,683 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [846630084] [2022-07-13 23:47:35,683 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [846630084] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 23:47:35,683 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 23:47:35,683 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-13 23:47:35,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009732964] [2022-07-13 23:47:35,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 23:47:35,684 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 23:47:35,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 23:47:35,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 23:47:35,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-13 23:47:35,685 INFO L87 Difference]: Start difference. First operand 5498 states and 7754 transitions. Second operand has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 3 states have internal predecessors, (61), 2 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-13 23:47:38,744 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-13 23:47:39,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 23:47:39,358 INFO L93 Difference]: Finished difference Result 13582 states and 19486 transitions. [2022-07-13 23:47:39,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-13 23:47:39,359 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 3 states have internal predecessors, (61), 2 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 92 [2022-07-13 23:47:39,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 23:47:39,395 INFO L225 Difference]: With dead ends: 13582 [2022-07-13 23:47:39,395 INFO L226 Difference]: Without dead ends: 8087 [2022-07-13 23:47:39,412 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2022-07-13 23:47:39,414 INFO L413 NwaCegarLoop]: 706 mSDtfsCounter, 1066 mSDsluCounter, 1583 mSDsCounter, 0 mSdLazyCounter, 732 mSolverCounterSat, 551 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1102 SdHoareTripleChecker+Valid, 2289 SdHoareTripleChecker+Invalid, 1284 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 551 IncrementalHoareTripleChecker+Valid, 732 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2022-07-13 23:47:39,414 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1102 Valid, 2289 Invalid, 1284 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [551 Valid, 732 Invalid, 1 Unknown, 0 Unchecked, 3.4s Time] [2022-07-13 23:47:39,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8087 states. [2022-07-13 23:47:39,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8087 to 7208. [2022-07-13 23:47:39,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7208 states, 5881 states have (on average 1.4057133140622342) internal successors, (8267), 5952 states have internal predecessors, (8267), 989 states have call successors, (989), 365 states have call predecessors, (989), 337 states have return successors, (973), 938 states have call predecessors, (973), 973 states have call successors, (973) [2022-07-13 23:47:39,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7208 states to 7208 states and 10229 transitions. [2022-07-13 23:47:39,710 INFO L78 Accepts]: Start accepts. Automaton has 7208 states and 10229 transitions. Word has length 92 [2022-07-13 23:47:39,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 23:47:39,710 INFO L495 AbstractCegarLoop]: Abstraction has 7208 states and 10229 transitions. [2022-07-13 23:47:39,710 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 3 states have internal predecessors, (61), 2 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-13 23:47:39,711 INFO L276 IsEmpty]: Start isEmpty. Operand 7208 states and 10229 transitions. [2022-07-13 23:47:39,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2022-07-13 23:47:39,722 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 23:47:39,722 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 23:47:39,722 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-13 23:47:39,722 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 23:47:39,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 23:47:39,723 INFO L85 PathProgramCache]: Analyzing trace with hash 2081938916, now seen corresponding path program 1 times [2022-07-13 23:47:39,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 23:47:39,723 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [331810691] [2022-07-13 23:47:39,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 23:47:39,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 23:47:39,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:47:40,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 23:47:40,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:47:40,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:47:40,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:47:40,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-13 23:47:40,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:47:40,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:47:40,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:47:40,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:47:40,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:47:40,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 23:47:40,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:47:40,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-13 23:47:40,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:47:40,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-07-13 23:47:40,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:47:40,283 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-07-13 23:47:40,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 23:47:40,283 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [331810691] [2022-07-13 23:47:40,283 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [331810691] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 23:47:40,283 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [712482330] [2022-07-13 23:47:40,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 23:47:40,284 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 23:47:40,284 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 23:47:40,287 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 23:47:40,311 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-13 23:47:41,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:47:41,873 INFO L263 TraceCheckSpWp]: Trace formula consists of 12129 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-13 23:47:41,885 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 23:47:41,983 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-07-13 23:47:41,983 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 23:47:41,983 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [712482330] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 23:47:41,984 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 23:47:41,984 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [7] total 13 [2022-07-13 23:47:41,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315160776] [2022-07-13 23:47:41,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 23:47:41,985 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-13 23:47:41,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 23:47:41,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-13 23:47:41,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2022-07-13 23:47:41,986 INFO L87 Difference]: Start difference. First operand 7208 states and 10229 transitions. Second operand has 8 states, 8 states have (on average 10.125) internal successors, (81), 8 states have internal predecessors, (81), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-13 23:47:43,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 23:47:43,149 INFO L93 Difference]: Finished difference Result 18050 states and 26050 transitions. [2022-07-13 23:47:43,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-13 23:47:43,150 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.125) internal successors, (81), 8 states have internal predecessors, (81), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 107 [2022-07-13 23:47:43,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 23:47:43,186 INFO L225 Difference]: With dead ends: 18050 [2022-07-13 23:47:43,187 INFO L226 Difference]: Without dead ends: 10805 [2022-07-13 23:47:43,210 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=241, Unknown=0, NotChecked=0, Total=306 [2022-07-13 23:47:43,211 INFO L413 NwaCegarLoop]: 975 mSDtfsCounter, 717 mSDsluCounter, 5279 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 717 SdHoareTripleChecker+Valid, 6254 SdHoareTripleChecker+Invalid, 169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-13 23:47:43,211 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [717 Valid, 6254 Invalid, 169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-13 23:47:43,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10805 states. [2022-07-13 23:47:43,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10805 to 7213. [2022-07-13 23:47:43,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7213 states, 5886 states have (on average 1.401291199456337) internal successors, (8248), 5957 states have internal predecessors, (8248), 989 states have call successors, (989), 365 states have call predecessors, (989), 337 states have return successors, (973), 938 states have call predecessors, (973), 973 states have call successors, (973) [2022-07-13 23:47:43,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7213 states to 7213 states and 10210 transitions. [2022-07-13 23:47:43,559 INFO L78 Accepts]: Start accepts. Automaton has 7213 states and 10210 transitions. Word has length 107 [2022-07-13 23:47:43,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 23:47:43,559 INFO L495 AbstractCegarLoop]: Abstraction has 7213 states and 10210 transitions. [2022-07-13 23:47:43,560 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.125) internal successors, (81), 8 states have internal predecessors, (81), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-13 23:47:43,560 INFO L276 IsEmpty]: Start isEmpty. Operand 7213 states and 10210 transitions. [2022-07-13 23:47:43,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-07-13 23:47:43,566 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 23:47:43,566 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 23:47:43,616 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-13 23:47:43,783 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-07-13 23:47:43,784 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 23:47:43,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 23:47:43,784 INFO L85 PathProgramCache]: Analyzing trace with hash 1609003934, now seen corresponding path program 1 times [2022-07-13 23:47:43,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 23:47:43,784 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [705078689] [2022-07-13 23:47:43,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 23:47:43,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 23:47:44,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:47:44,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 23:47:44,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:47:44,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:47:44,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:47:44,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-13 23:47:44,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:47:44,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:47:44,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:47:44,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-13 23:47:44,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:47:44,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:47:44,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:47:44,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:47:44,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:47:44,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 23:47:44,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:47:44,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-13 23:47:44,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:47:44,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-13 23:47:44,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:47:44,268 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-07-13 23:47:44,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 23:47:44,268 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [705078689] [2022-07-13 23:47:44,268 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [705078689] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 23:47:44,268 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 23:47:44,268 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 23:47:44,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756594700] [2022-07-13 23:47:44,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 23:47:44,269 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 23:47:44,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 23:47:44,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 23:47:44,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-13 23:47:44,270 INFO L87 Difference]: Start difference. First operand 7213 states and 10210 transitions. Second operand has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 4 states have internal predecessors, (94), 2 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-07-13 23:47:46,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 23:47:46,498 INFO L93 Difference]: Finished difference Result 23671 states and 35308 transitions. [2022-07-13 23:47:46,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-13 23:47:46,499 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 4 states have internal predecessors, (94), 2 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 133 [2022-07-13 23:47:46,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 23:47:46,554 INFO L225 Difference]: With dead ends: 23671 [2022-07-13 23:47:46,555 INFO L226 Difference]: Without dead ends: 16461 [2022-07-13 23:47:46,582 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-07-13 23:47:46,583 INFO L413 NwaCegarLoop]: 1090 mSDtfsCounter, 1418 mSDsluCounter, 2669 mSDsCounter, 0 mSdLazyCounter, 924 mSolverCounterSat, 459 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1521 SdHoareTripleChecker+Valid, 3759 SdHoareTripleChecker+Invalid, 1383 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 459 IncrementalHoareTripleChecker+Valid, 924 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-07-13 23:47:46,584 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1521 Valid, 3759 Invalid, 1383 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [459 Valid, 924 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-07-13 23:47:46,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16461 states. [2022-07-13 23:47:47,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16461 to 7189. [2022-07-13 23:47:47,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7189 states, 5862 states have (on average 1.3974752644148756) internal successors, (8192), 5933 states have internal predecessors, (8192), 989 states have call successors, (989), 365 states have call predecessors, (989), 337 states have return successors, (973), 938 states have call predecessors, (973), 973 states have call successors, (973) [2022-07-13 23:47:47,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7189 states to 7189 states and 10154 transitions. [2022-07-13 23:47:47,058 INFO L78 Accepts]: Start accepts. Automaton has 7189 states and 10154 transitions. Word has length 133 [2022-07-13 23:47:47,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 23:47:47,059 INFO L495 AbstractCegarLoop]: Abstraction has 7189 states and 10154 transitions. [2022-07-13 23:47:47,059 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 4 states have internal predecessors, (94), 2 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-07-13 23:47:47,059 INFO L276 IsEmpty]: Start isEmpty. Operand 7189 states and 10154 transitions. [2022-07-13 23:47:47,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-07-13 23:47:47,065 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 23:47:47,065 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 23:47:47,065 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-13 23:47:47,065 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 23:47:47,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 23:47:47,066 INFO L85 PathProgramCache]: Analyzing trace with hash -1603001176, now seen corresponding path program 1 times [2022-07-13 23:47:47,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 23:47:47,066 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738840058] [2022-07-13 23:47:47,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 23:47:47,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 23:47:47,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:47:47,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 23:47:47,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:47:47,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:47:47,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:47:47,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-13 23:47:47,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:47:47,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:47:47,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:47:47,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-13 23:47:47,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:47:47,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:47:47,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:47:47,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-13 23:47:47,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:47:47,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:47:47,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:47:47,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:47:47,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:47:47,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 23:47:47,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:47:47,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-13 23:47:47,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:47:47,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-07-13 23:47:47,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:47:47,557 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-07-13 23:47:47,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 23:47:47,558 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [738840058] [2022-07-13 23:47:47,558 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [738840058] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 23:47:47,558 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 23:47:47,558 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 23:47:47,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839189401] [2022-07-13 23:47:47,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 23:47:47,559 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 23:47:47,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 23:47:47,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 23:47:47,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-13 23:47:47,560 INFO L87 Difference]: Start difference. First operand 7189 states and 10154 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-13 23:47:49,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 23:47:49,712 INFO L93 Difference]: Finished difference Result 24324 states and 36225 transitions. [2022-07-13 23:47:49,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-13 23:47:49,713 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 135 [2022-07-13 23:47:49,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 23:47:49,777 INFO L225 Difference]: With dead ends: 24324 [2022-07-13 23:47:49,777 INFO L226 Difference]: Without dead ends: 17138 [2022-07-13 23:47:49,803 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-07-13 23:47:49,804 INFO L413 NwaCegarLoop]: 1718 mSDtfsCounter, 832 mSDsluCounter, 5421 mSDsCounter, 0 mSdLazyCounter, 1139 mSolverCounterSat, 168 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 939 SdHoareTripleChecker+Valid, 7139 SdHoareTripleChecker+Invalid, 1307 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 168 IncrementalHoareTripleChecker+Valid, 1139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-07-13 23:47:49,804 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [939 Valid, 7139 Invalid, 1307 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [168 Valid, 1139 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-07-13 23:47:49,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17138 states. [2022-07-13 23:47:50,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17138 to 7205. [2022-07-13 23:47:50,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7205 states, 5878 states have (on average 1.396393331064988) internal successors, (8208), 5949 states have internal predecessors, (8208), 989 states have call successors, (989), 365 states have call predecessors, (989), 337 states have return successors, (973), 938 states have call predecessors, (973), 973 states have call successors, (973) [2022-07-13 23:47:50,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7205 states to 7205 states and 10170 transitions. [2022-07-13 23:47:50,274 INFO L78 Accepts]: Start accepts. Automaton has 7205 states and 10170 transitions. Word has length 135 [2022-07-13 23:47:50,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 23:47:50,275 INFO L495 AbstractCegarLoop]: Abstraction has 7205 states and 10170 transitions. [2022-07-13 23:47:50,275 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-13 23:47:50,275 INFO L276 IsEmpty]: Start isEmpty. Operand 7205 states and 10170 transitions. [2022-07-13 23:47:50,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-07-13 23:47:50,281 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 23:47:50,282 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 23:47:50,282 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-13 23:47:50,282 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 23:47:50,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 23:47:50,283 INFO L85 PathProgramCache]: Analyzing trace with hash 241907216, now seen corresponding path program 1 times [2022-07-13 23:47:50,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 23:47:50,283 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [545646414] [2022-07-13 23:47:50,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 23:47:50,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 23:47:50,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:47:50,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 23:47:50,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:47:50,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:47:50,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:47:50,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-13 23:47:50,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:47:50,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:47:50,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:47:50,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-13 23:47:50,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:47:50,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:47:50,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:47:50,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-07-13 23:47:50,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:47:50,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:47:50,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:47:50,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:47:50,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:47:50,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 23:47:50,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:47:50,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-13 23:47:50,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:47:50,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-07-13 23:47:50,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:47:50,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:47:50,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:47:50,776 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2022-07-13 23:47:50,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 23:47:50,776 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [545646414] [2022-07-13 23:47:50,776 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [545646414] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 23:47:50,776 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 23:47:50,776 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-13 23:47:50,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494471956] [2022-07-13 23:47:50,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 23:47:50,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 23:47:50,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 23:47:50,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 23:47:50,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-13 23:47:50,778 INFO L87 Difference]: Start difference. First operand 7205 states and 10170 transitions. Second operand has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-13 23:47:52,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 23:47:52,505 INFO L93 Difference]: Finished difference Result 16785 states and 23996 transitions. [2022-07-13 23:47:52,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-13 23:47:52,506 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 145 [2022-07-13 23:47:52,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 23:47:52,540 INFO L225 Difference]: With dead ends: 16785 [2022-07-13 23:47:52,541 INFO L226 Difference]: Without dead ends: 9583 [2022-07-13 23:47:52,561 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-07-13 23:47:52,562 INFO L413 NwaCegarLoop]: 1260 mSDtfsCounter, 1071 mSDsluCounter, 1736 mSDsCounter, 0 mSdLazyCounter, 725 mSolverCounterSat, 511 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1143 SdHoareTripleChecker+Valid, 2996 SdHoareTripleChecker+Invalid, 1236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 511 IncrementalHoareTripleChecker+Valid, 725 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-07-13 23:47:52,562 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1143 Valid, 2996 Invalid, 1236 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [511 Valid, 725 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-07-13 23:47:52,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9583 states. [2022-07-13 23:47:53,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9583 to 8951. [2022-07-13 23:47:53,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8951 states, 7326 states have (on average 1.3928473928473928) internal successors, (10204), 7409 states have internal predecessors, (10204), 1211 states have call successors, (1211), 445 states have call predecessors, (1211), 413 states have return successors, (1195), 1156 states have call predecessors, (1195), 1195 states have call successors, (1195) [2022-07-13 23:47:53,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8951 states to 8951 states and 12610 transitions. [2022-07-13 23:47:53,137 INFO L78 Accepts]: Start accepts. Automaton has 8951 states and 12610 transitions. Word has length 145 [2022-07-13 23:47:53,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 23:47:53,138 INFO L495 AbstractCegarLoop]: Abstraction has 8951 states and 12610 transitions. [2022-07-13 23:47:53,138 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-13 23:47:53,138 INFO L276 IsEmpty]: Start isEmpty. Operand 8951 states and 12610 transitions. [2022-07-13 23:47:53,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2022-07-13 23:47:53,145 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 23:47:53,145 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 23:47:53,145 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-13 23:47:53,145 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 23:47:53,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 23:47:53,146 INFO L85 PathProgramCache]: Analyzing trace with hash 1836876500, now seen corresponding path program 1 times [2022-07-13 23:47:53,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 23:47:53,146 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [101425163] [2022-07-13 23:47:53,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 23:47:53,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 23:47:53,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:47:53,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 23:47:53,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:47:53,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:47:53,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:47:53,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-13 23:47:53,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:47:53,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:47:53,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:47:53,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-13 23:47:53,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:47:53,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:47:53,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:47:53,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-07-13 23:47:53,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:47:53,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:47:53,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:47:53,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:47:53,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:47:53,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 23:47:53,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:47:53,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-13 23:47:53,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:47:53,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-07-13 23:47:53,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:47:53,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:47:53,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:47:53,606 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-07-13 23:47:53,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 23:47:53,607 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [101425163] [2022-07-13 23:47:53,607 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [101425163] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 23:47:53,607 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 23:47:53,607 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-13 23:47:53,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325806925] [2022-07-13 23:47:53,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 23:47:53,608 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 23:47:53,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 23:47:53,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 23:47:53,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-13 23:47:53,609 INFO L87 Difference]: Start difference. First operand 8951 states and 12610 transitions. Second operand has 6 states, 6 states have (on average 16.0) internal successors, (96), 3 states have internal predecessors, (96), 2 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-13 23:47:55,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 23:47:55,499 INFO L93 Difference]: Finished difference Result 20381 states and 29052 transitions. [2022-07-13 23:47:55,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-13 23:47:55,500 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.0) internal successors, (96), 3 states have internal predecessors, (96), 2 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 151 [2022-07-13 23:47:55,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 23:47:55,537 INFO L225 Difference]: With dead ends: 20381 [2022-07-13 23:47:55,537 INFO L226 Difference]: Without dead ends: 11433 [2022-07-13 23:47:55,557 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-07-13 23:47:55,558 INFO L413 NwaCegarLoop]: 1274 mSDtfsCounter, 1061 mSDsluCounter, 1760 mSDsCounter, 0 mSdLazyCounter, 722 mSolverCounterSat, 505 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1134 SdHoareTripleChecker+Valid, 3034 SdHoareTripleChecker+Invalid, 1227 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 505 IncrementalHoareTripleChecker+Valid, 722 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-07-13 23:47:55,558 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1134 Valid, 3034 Invalid, 1227 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [505 Valid, 722 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-07-13 23:47:55,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11433 states. [2022-07-13 23:47:56,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11433 to 10697. [2022-07-13 23:47:56,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10697 states, 8774 states have (on average 1.39047184864372) internal successors, (12200), 8869 states have internal predecessors, (12200), 1433 states have call successors, (1433), 525 states have call predecessors, (1433), 489 states have return successors, (1417), 1374 states have call predecessors, (1417), 1417 states have call successors, (1417) [2022-07-13 23:47:56,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10697 states to 10697 states and 15050 transitions. [2022-07-13 23:47:56,186 INFO L78 Accepts]: Start accepts. Automaton has 10697 states and 15050 transitions. Word has length 151 [2022-07-13 23:47:56,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 23:47:56,186 INFO L495 AbstractCegarLoop]: Abstraction has 10697 states and 15050 transitions. [2022-07-13 23:47:56,187 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.0) internal successors, (96), 3 states have internal predecessors, (96), 2 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-13 23:47:56,187 INFO L276 IsEmpty]: Start isEmpty. Operand 10697 states and 15050 transitions. [2022-07-13 23:47:56,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-07-13 23:47:56,194 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 23:47:56,194 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 23:47:56,194 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-13 23:47:56,194 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 23:47:56,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 23:47:56,195 INFO L85 PathProgramCache]: Analyzing trace with hash 729924277, now seen corresponding path program 1 times [2022-07-13 23:47:56,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 23:47:56,195 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2037102787] [2022-07-13 23:47:56,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 23:47:56,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 23:47:56,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:47:56,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 23:47:56,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:47:56,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:47:56,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:47:56,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-13 23:47:56,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:47:56,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:47:56,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:47:56,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-13 23:47:56,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:47:56,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:47:56,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:47:56,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-07-13 23:47:56,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:47:56,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:47:56,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:47:56,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:47:56,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:47:56,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 23:47:56,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:47:56,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-13 23:47:56,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:47:56,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-07-13 23:47:56,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:47:56,667 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-07-13 23:47:56,667 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 23:47:56,667 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2037102787] [2022-07-13 23:47:56,667 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2037102787] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 23:47:56,667 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [6973053] [2022-07-13 23:47:56,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 23:47:56,668 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 23:47:56,668 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 23:47:56,672 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 23:47:56,673 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-13 23:47:58,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:47:58,379 INFO L263 TraceCheckSpWp]: Trace formula consists of 12252 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-13 23:47:58,389 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 23:47:58,557 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-13 23:47:58,557 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 23:47:58,558 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [6973053] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 23:47:58,558 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 23:47:58,558 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 8 [2022-07-13 23:47:58,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556210035] [2022-07-13 23:47:58,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 23:47:58,560 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 23:47:58,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 23:47:58,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 23:47:58,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-07-13 23:47:58,561 INFO L87 Difference]: Start difference. First operand 10697 states and 15050 transitions. Second operand has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-07-13 23:47:59,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 23:47:59,898 INFO L93 Difference]: Finished difference Result 32084 states and 45142 transitions. [2022-07-13 23:47:59,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 23:47:59,898 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 141 [2022-07-13 23:47:59,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 23:48:00,115 INFO L225 Difference]: With dead ends: 32084 [2022-07-13 23:48:00,116 INFO L226 Difference]: Without dead ends: 32069 [2022-07-13 23:48:00,136 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-07-13 23:48:00,137 INFO L413 NwaCegarLoop]: 1343 mSDtfsCounter, 1388 mSDsluCounter, 1240 mSDsCounter, 0 mSdLazyCounter, 171 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1388 SdHoareTripleChecker+Valid, 2583 SdHoareTripleChecker+Invalid, 260 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-13 23:48:00,137 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1388 Valid, 2583 Invalid, 260 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 171 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-13 23:48:00,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32069 states. [2022-07-13 23:48:01,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32069 to 31933. [2022-07-13 23:48:01,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31933 states, 26196 states have (on average 1.3918155443579172) internal successors, (36460), 26473 states have internal predecessors, (36460), 4277 states have call successors, (4277), 1561 states have call predecessors, (4277), 1459 states have return successors, (4243), 4114 states have call predecessors, (4243), 4243 states have call successors, (4243) [2022-07-13 23:48:01,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31933 states to 31933 states and 44980 transitions. [2022-07-13 23:48:01,536 INFO L78 Accepts]: Start accepts. Automaton has 31933 states and 44980 transitions. Word has length 141 [2022-07-13 23:48:01,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 23:48:01,536 INFO L495 AbstractCegarLoop]: Abstraction has 31933 states and 44980 transitions. [2022-07-13 23:48:01,536 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-07-13 23:48:01,536 INFO L276 IsEmpty]: Start isEmpty. Operand 31933 states and 44980 transitions. [2022-07-13 23:48:01,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2022-07-13 23:48:01,548 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 23:48:01,548 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 23:48:01,593 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-07-13 23:48:01,775 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-07-13 23:48:01,775 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 23:48:01,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 23:48:01,776 INFO L85 PathProgramCache]: Analyzing trace with hash -778138531, now seen corresponding path program 1 times [2022-07-13 23:48:01,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 23:48:01,776 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586400492] [2022-07-13 23:48:01,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 23:48:01,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 23:48:02,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:48:02,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 23:48:02,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:48:02,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:48:02,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:48:02,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-13 23:48:02,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:48:02,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:48:02,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:48:02,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-13 23:48:02,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:48:02,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:48:02,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:48:02,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-07-13 23:48:02,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:48:02,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:48:02,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:48:02,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:48:02,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:48:02,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 23:48:02,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:48:02,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-13 23:48:02,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:48:02,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-07-13 23:48:02,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:48:02,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:48:02,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:48:02,211 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2022-07-13 23:48:02,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 23:48:02,211 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586400492] [2022-07-13 23:48:02,211 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1586400492] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 23:48:02,211 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 23:48:02,211 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-13 23:48:02,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491404799] [2022-07-13 23:48:02,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 23:48:02,212 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 23:48:02,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 23:48:02,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 23:48:02,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-13 23:48:02,213 INFO L87 Difference]: Start difference. First operand 31933 states and 44980 transitions. Second operand has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-13 23:48:05,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 23:48:05,052 INFO L93 Difference]: Finished difference Result 71555 states and 101924 transitions. [2022-07-13 23:48:05,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-13 23:48:05,052 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 147 [2022-07-13 23:48:05,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 23:48:05,165 INFO L225 Difference]: With dead ends: 71555 [2022-07-13 23:48:05,166 INFO L226 Difference]: Without dead ends: 39625 [2022-07-13 23:48:05,233 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-07-13 23:48:05,234 INFO L413 NwaCegarLoop]: 1275 mSDtfsCounter, 729 mSDsluCounter, 2447 mSDsCounter, 0 mSdLazyCounter, 898 mSolverCounterSat, 235 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 801 SdHoareTripleChecker+Valid, 3722 SdHoareTripleChecker+Invalid, 1133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 235 IncrementalHoareTripleChecker+Valid, 898 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-07-13 23:48:05,234 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [801 Valid, 3722 Invalid, 1133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [235 Valid, 898 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-07-13 23:48:05,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39625 states. [2022-07-13 23:48:06,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39625 to 37163. [2022-07-13 23:48:06,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37163 states, 30532 states have (on average 1.3899515262675226) internal successors, (42438), 30845 states have internal predecessors, (42438), 4943 states have call successors, (4943), 1801 states have call predecessors, (4943), 1687 states have return successors, (4909), 4768 states have call predecessors, (4909), 4909 states have call successors, (4909) [2022-07-13 23:48:07,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37163 states to 37163 states and 52290 transitions. [2022-07-13 23:48:07,211 INFO L78 Accepts]: Start accepts. Automaton has 37163 states and 52290 transitions. Word has length 147 [2022-07-13 23:48:07,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 23:48:07,211 INFO L495 AbstractCegarLoop]: Abstraction has 37163 states and 52290 transitions. [2022-07-13 23:48:07,212 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-13 23:48:07,212 INFO L276 IsEmpty]: Start isEmpty. Operand 37163 states and 52290 transitions. [2022-07-13 23:48:07,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2022-07-13 23:48:07,223 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 23:48:07,223 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 23:48:07,224 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-13 23:48:07,224 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 23:48:07,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 23:48:07,224 INFO L85 PathProgramCache]: Analyzing trace with hash 1197811468, now seen corresponding path program 1 times [2022-07-13 23:48:07,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 23:48:07,225 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [227170984] [2022-07-13 23:48:07,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 23:48:07,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 23:48:07,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:48:07,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 23:48:07,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:48:07,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:48:07,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:48:07,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-13 23:48:07,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:48:07,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:48:07,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:48:07,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-13 23:48:07,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:48:07,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:48:07,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:48:07,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:48:07,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:48:07,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 23:48:07,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:48:07,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-13 23:48:07,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:48:07,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-13 23:48:07,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:48:07,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:48:07,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:48:07,678 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-07-13 23:48:07,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 23:48:07,679 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [227170984] [2022-07-13 23:48:07,679 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [227170984] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 23:48:07,679 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 23:48:07,679 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-13 23:48:07,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626462122] [2022-07-13 23:48:07,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 23:48:07,680 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-13 23:48:07,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 23:48:07,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-13 23:48:07,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-07-13 23:48:07,681 INFO L87 Difference]: Start difference. First operand 37163 states and 52290 transitions. Second operand has 8 states, 8 states have (on average 12.375) internal successors, (99), 4 states have internal predecessors, (99), 2 states have call successors, (12), 5 states have call predecessors, (12), 2 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2022-07-13 23:48:10,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 23:48:10,235 INFO L93 Difference]: Finished difference Result 76763 states and 108709 transitions. [2022-07-13 23:48:10,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-13 23:48:10,236 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.375) internal successors, (99), 4 states have internal predecessors, (99), 2 states have call successors, (12), 5 states have call predecessors, (12), 2 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) Word has length 148 [2022-07-13 23:48:10,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 23:48:10,352 INFO L225 Difference]: With dead ends: 76763 [2022-07-13 23:48:10,352 INFO L226 Difference]: Without dead ends: 39603 [2022-07-13 23:48:10,414 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2022-07-13 23:48:10,415 INFO L413 NwaCegarLoop]: 705 mSDtfsCounter, 1163 mSDsluCounter, 1731 mSDsCounter, 0 mSdLazyCounter, 752 mSolverCounterSat, 439 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1210 SdHoareTripleChecker+Valid, 2436 SdHoareTripleChecker+Invalid, 1191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 439 IncrementalHoareTripleChecker+Valid, 752 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-13 23:48:10,415 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1210 Valid, 2436 Invalid, 1191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [439 Valid, 752 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-13 23:48:10,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39603 states. [2022-07-13 23:48:11,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39603 to 37163. [2022-07-13 23:48:12,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37163 states, 30532 states have (on average 1.3895584960041922) internal successors, (42426), 30845 states have internal predecessors, (42426), 4943 states have call successors, (4943), 1801 states have call predecessors, (4943), 1687 states have return successors, (4909), 4768 states have call predecessors, (4909), 4909 states have call successors, (4909) [2022-07-13 23:48:12,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37163 states to 37163 states and 52278 transitions. [2022-07-13 23:48:12,116 INFO L78 Accepts]: Start accepts. Automaton has 37163 states and 52278 transitions. Word has length 148 [2022-07-13 23:48:12,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 23:48:12,116 INFO L495 AbstractCegarLoop]: Abstraction has 37163 states and 52278 transitions. [2022-07-13 23:48:12,116 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.375) internal successors, (99), 4 states have internal predecessors, (99), 2 states have call successors, (12), 5 states have call predecessors, (12), 2 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2022-07-13 23:48:12,116 INFO L276 IsEmpty]: Start isEmpty. Operand 37163 states and 52278 transitions. [2022-07-13 23:48:12,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2022-07-13 23:48:12,128 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 23:48:12,129 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 23:48:12,129 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-13 23:48:12,129 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 23:48:12,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 23:48:12,130 INFO L85 PathProgramCache]: Analyzing trace with hash 2054948044, now seen corresponding path program 1 times [2022-07-13 23:48:12,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 23:48:12,130 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1695958828] [2022-07-13 23:48:12,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 23:48:12,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 23:48:12,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:48:12,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 23:48:12,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:48:12,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:48:12,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:48:12,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-13 23:48:12,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:48:12,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:48:12,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:48:12,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-13 23:48:12,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:48:12,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:48:12,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:48:12,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-07-13 23:48:12,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:48:12,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:48:12,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:48:12,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:48:12,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:48:12,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 23:48:12,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:48:12,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-13 23:48:12,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:48:12,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-07-13 23:48:12,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:48:12,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:48:12,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:48:12,610 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-07-13 23:48:12,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 23:48:12,610 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1695958828] [2022-07-13 23:48:12,611 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1695958828] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 23:48:12,611 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 23:48:12,611 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-13 23:48:12,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842730747] [2022-07-13 23:48:12,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 23:48:12,611 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-13 23:48:12,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 23:48:12,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-13 23:48:12,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-07-13 23:48:12,612 INFO L87 Difference]: Start difference. First operand 37163 states and 52278 transitions. Second operand has 8 states, 8 states have (on average 11.875) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (14), 5 states have call predecessors, (14), 2 states have return successors, (11), 3 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-13 23:48:15,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 23:48:15,374 INFO L93 Difference]: Finished difference Result 76763 states and 108685 transitions. [2022-07-13 23:48:15,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-13 23:48:15,375 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.875) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (14), 5 states have call predecessors, (14), 2 states have return successors, (11), 3 states have call predecessors, (11), 2 states have call successors, (11) Word has length 150 [2022-07-13 23:48:15,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 23:48:15,502 INFO L225 Difference]: With dead ends: 76763 [2022-07-13 23:48:15,502 INFO L226 Difference]: Without dead ends: 39603 [2022-07-13 23:48:15,586 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2022-07-13 23:48:15,587 INFO L413 NwaCegarLoop]: 704 mSDtfsCounter, 993 mSDsluCounter, 1730 mSDsCounter, 0 mSdLazyCounter, 767 mSolverCounterSat, 334 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1040 SdHoareTripleChecker+Valid, 2434 SdHoareTripleChecker+Invalid, 1101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 334 IncrementalHoareTripleChecker+Valid, 767 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-13 23:48:15,588 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1040 Valid, 2434 Invalid, 1101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [334 Valid, 767 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-13 23:48:15,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39603 states. [2022-07-13 23:48:17,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39603 to 37163. [2022-07-13 23:48:17,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37163 states, 30532 states have (on average 1.389165465740862) internal successors, (42414), 30845 states have internal predecessors, (42414), 4943 states have call successors, (4943), 1801 states have call predecessors, (4943), 1687 states have return successors, (4909), 4768 states have call predecessors, (4909), 4909 states have call successors, (4909) [2022-07-13 23:48:17,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37163 states to 37163 states and 52266 transitions. [2022-07-13 23:48:17,241 INFO L78 Accepts]: Start accepts. Automaton has 37163 states and 52266 transitions. Word has length 150 [2022-07-13 23:48:17,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 23:48:17,241 INFO L495 AbstractCegarLoop]: Abstraction has 37163 states and 52266 transitions. [2022-07-13 23:48:17,241 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.875) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (14), 5 states have call predecessors, (14), 2 states have return successors, (11), 3 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-13 23:48:17,241 INFO L276 IsEmpty]: Start isEmpty. Operand 37163 states and 52266 transitions. [2022-07-13 23:48:17,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2022-07-13 23:48:17,250 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 23:48:17,250 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 23:48:17,250 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-13 23:48:17,251 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 23:48:17,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 23:48:17,251 INFO L85 PathProgramCache]: Analyzing trace with hash 606690923, now seen corresponding path program 1 times [2022-07-13 23:48:17,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 23:48:17,251 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [310982735] [2022-07-13 23:48:17,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 23:48:17,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 23:48:17,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:48:17,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 23:48:17,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:48:17,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:48:17,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:48:17,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-13 23:48:17,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:48:17,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:48:17,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:48:17,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-13 23:48:17,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:48:17,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:48:17,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:48:17,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-07-13 23:48:17,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:48:17,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:48:17,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:48:17,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:48:17,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:48:17,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 23:48:17,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:48:17,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-13 23:48:17,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:48:17,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-07-13 23:48:17,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:48:17,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:48:17,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:48:17,717 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2022-07-13 23:48:17,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 23:48:17,717 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [310982735] [2022-07-13 23:48:17,717 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [310982735] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 23:48:17,717 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 23:48:17,717 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-13 23:48:17,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13516022] [2022-07-13 23:48:17,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 23:48:17,717 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-13 23:48:17,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 23:48:17,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-13 23:48:17,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-07-13 23:48:17,718 INFO L87 Difference]: Start difference. First operand 37163 states and 52266 transitions. Second operand has 8 states, 8 states have (on average 11.875) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (14), 5 states have call predecessors, (14), 2 states have return successors, (11), 3 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-13 23:48:20,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 23:48:20,388 INFO L93 Difference]: Finished difference Result 76763 states and 108661 transitions. [2022-07-13 23:48:20,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-13 23:48:20,389 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.875) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (14), 5 states have call predecessors, (14), 2 states have return successors, (11), 3 states have call predecessors, (11), 2 states have call successors, (11) Word has length 151 [2022-07-13 23:48:20,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 23:48:20,620 INFO L225 Difference]: With dead ends: 76763 [2022-07-13 23:48:20,620 INFO L226 Difference]: Without dead ends: 39603 [2022-07-13 23:48:20,673 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2022-07-13 23:48:20,674 INFO L413 NwaCegarLoop]: 703 mSDtfsCounter, 992 mSDsluCounter, 1726 mSDsCounter, 0 mSdLazyCounter, 767 mSolverCounterSat, 334 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1039 SdHoareTripleChecker+Valid, 2429 SdHoareTripleChecker+Invalid, 1101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 334 IncrementalHoareTripleChecker+Valid, 767 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-13 23:48:20,674 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1039 Valid, 2429 Invalid, 1101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [334 Valid, 767 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-13 23:48:20,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39603 states. [2022-07-13 23:48:22,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39603 to 37163. [2022-07-13 23:48:22,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37163 states, 30532 states have (on average 1.3887724354775317) internal successors, (42402), 30845 states have internal predecessors, (42402), 4943 states have call successors, (4943), 1801 states have call predecessors, (4943), 1687 states have return successors, (4909), 4768 states have call predecessors, (4909), 4909 states have call successors, (4909) [2022-07-13 23:48:22,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37163 states to 37163 states and 52254 transitions. [2022-07-13 23:48:22,355 INFO L78 Accepts]: Start accepts. Automaton has 37163 states and 52254 transitions. Word has length 151 [2022-07-13 23:48:22,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 23:48:22,356 INFO L495 AbstractCegarLoop]: Abstraction has 37163 states and 52254 transitions. [2022-07-13 23:48:22,356 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.875) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (14), 5 states have call predecessors, (14), 2 states have return successors, (11), 3 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-13 23:48:22,356 INFO L276 IsEmpty]: Start isEmpty. Operand 37163 states and 52254 transitions. [2022-07-13 23:48:22,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2022-07-13 23:48:22,365 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 23:48:22,366 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 23:48:22,366 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-13 23:48:22,366 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 23:48:22,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 23:48:22,367 INFO L85 PathProgramCache]: Analyzing trace with hash 216868424, now seen corresponding path program 1 times [2022-07-13 23:48:22,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 23:48:22,367 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1010813944] [2022-07-13 23:48:22,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 23:48:22,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 23:48:22,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:48:22,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 23:48:22,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:48:22,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:48:22,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:48:22,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-13 23:48:22,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:48:22,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:48:22,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:48:22,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-13 23:48:22,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:48:22,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-13 23:48:22,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:48:22,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-13 23:48:22,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:48:22,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-13 23:48:22,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:48:22,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:48:22,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:48:22,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 23:48:22,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:48:22,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:48:22,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:48:22,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-13 23:48:22,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:48:22,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:48:22,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:48:22,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-07-13 23:48:22,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:48:22,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2022-07-13 23:48:22,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:48:22,906 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-07-13 23:48:22,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 23:48:22,907 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1010813944] [2022-07-13 23:48:22,907 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1010813944] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 23:48:22,907 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 23:48:22,907 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-13 23:48:22,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591605577] [2022-07-13 23:48:22,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 23:48:22,908 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 23:48:22,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 23:48:22,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 23:48:22,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-13 23:48:22,909 INFO L87 Difference]: Start difference. First operand 37163 states and 52254 transitions. Second operand has 6 states, 6 states have (on average 17.0) internal successors, (102), 3 states have internal predecessors, (102), 2 states have call successors, (17), 5 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-07-13 23:48:25,894 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-13 23:48:27,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 23:48:27,460 INFO L93 Difference]: Finished difference Result 62438 states and 87847 transitions. [2022-07-13 23:48:27,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-13 23:48:27,461 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.0) internal successors, (102), 3 states have internal predecessors, (102), 2 states have call successors, (17), 5 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 150 [2022-07-13 23:48:27,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 23:48:27,526 INFO L225 Difference]: With dead ends: 62438 [2022-07-13 23:48:27,526 INFO L226 Difference]: Without dead ends: 25236 [2022-07-13 23:48:27,575 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-07-13 23:48:27,575 INFO L413 NwaCegarLoop]: 680 mSDtfsCounter, 636 mSDsluCounter, 1562 mSDsCounter, 0 mSdLazyCounter, 659 mSolverCounterSat, 392 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 653 SdHoareTripleChecker+Valid, 2242 SdHoareTripleChecker+Invalid, 1052 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 392 IncrementalHoareTripleChecker+Valid, 659 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-07-13 23:48:27,575 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [653 Valid, 2242 Invalid, 1052 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [392 Valid, 659 Invalid, 1 Unknown, 0 Unchecked, 3.2s Time] [2022-07-13 23:48:27,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25236 states. [2022-07-13 23:48:28,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25236 to 16417. [2022-07-13 23:48:28,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16417 states, 13428 states have (on average 1.4063896336014299) internal successors, (18885), 13582 states have internal predecessors, (18885), 2216 states have call successors, (2216), 829 states have call predecessors, (2216), 772 states have return successors, (2200), 2131 states have call predecessors, (2200), 2200 states have call successors, (2200) [2022-07-13 23:48:28,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16417 states to 16417 states and 23301 transitions. [2022-07-13 23:48:28,371 INFO L78 Accepts]: Start accepts. Automaton has 16417 states and 23301 transitions. Word has length 150 [2022-07-13 23:48:28,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 23:48:28,372 INFO L495 AbstractCegarLoop]: Abstraction has 16417 states and 23301 transitions. [2022-07-13 23:48:28,372 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.0) internal successors, (102), 3 states have internal predecessors, (102), 2 states have call successors, (17), 5 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-07-13 23:48:28,372 INFO L276 IsEmpty]: Start isEmpty. Operand 16417 states and 23301 transitions. [2022-07-13 23:48:28,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2022-07-13 23:48:28,378 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 23:48:28,378 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 23:48:28,378 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-13 23:48:28,379 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 23:48:28,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 23:48:28,379 INFO L85 PathProgramCache]: Analyzing trace with hash -2137516858, now seen corresponding path program 1 times [2022-07-13 23:48:28,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 23:48:28,380 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [218617928] [2022-07-13 23:48:28,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 23:48:28,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 23:48:28,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:48:28,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 23:48:28,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:48:28,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:48:28,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:48:28,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-13 23:48:28,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:48:28,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:48:28,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:48:28,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-13 23:48:28,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:48:28,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-13 23:48:28,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:48:28,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-13 23:48:28,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:48:28,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-13 23:48:28,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:48:28,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:48:28,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:48:28,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 23:48:28,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:48:28,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:48:28,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:48:28,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-13 23:48:28,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:48:28,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:48:28,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:48:28,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-07-13 23:48:28,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:48:28,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2022-07-13 23:48:28,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:48:28,829 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2022-07-13 23:48:28,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 23:48:28,829 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [218617928] [2022-07-13 23:48:28,829 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [218617928] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 23:48:28,829 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 23:48:28,830 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-13 23:48:28,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467534782] [2022-07-13 23:48:28,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 23:48:28,833 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 23:48:28,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 23:48:28,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 23:48:28,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-13 23:48:28,834 INFO L87 Difference]: Start difference. First operand 16417 states and 23301 transitions. Second operand has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 3 states have internal predecessors, (101), 2 states have call successors, (17), 5 states have call predecessors, (17), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2022-07-13 23:48:31,795 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-13 23:48:33,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 23:48:33,059 INFO L93 Difference]: Finished difference Result 34860 states and 50112 transitions. [2022-07-13 23:48:33,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-13 23:48:33,060 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 3 states have internal predecessors, (101), 2 states have call successors, (17), 5 states have call predecessors, (17), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 150 [2022-07-13 23:48:33,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 23:48:33,121 INFO L225 Difference]: With dead ends: 34860 [2022-07-13 23:48:33,122 INFO L226 Difference]: Without dead ends: 18461 [2022-07-13 23:48:33,167 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2022-07-13 23:48:33,168 INFO L413 NwaCegarLoop]: 682 mSDtfsCounter, 626 mSDsluCounter, 1567 mSDsCounter, 0 mSdLazyCounter, 657 mSolverCounterSat, 384 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 643 SdHoareTripleChecker+Valid, 2249 SdHoareTripleChecker+Invalid, 1042 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 384 IncrementalHoareTripleChecker+Valid, 657 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-07-13 23:48:33,169 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [643 Valid, 2249 Invalid, 1042 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [384 Valid, 657 Invalid, 1 Unknown, 0 Unchecked, 3.2s Time] [2022-07-13 23:48:33,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18461 states. [2022-07-13 23:48:33,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18461 to 16438. [2022-07-13 23:48:33,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16438 states, 13449 states have (on average 1.4057550747267455) internal successors, (18906), 13603 states have internal predecessors, (18906), 2216 states have call successors, (2216), 829 states have call predecessors, (2216), 772 states have return successors, (2200), 2131 states have call predecessors, (2200), 2200 states have call successors, (2200) [2022-07-13 23:48:34,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16438 states to 16438 states and 23322 transitions. [2022-07-13 23:48:34,027 INFO L78 Accepts]: Start accepts. Automaton has 16438 states and 23322 transitions. Word has length 150 [2022-07-13 23:48:34,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 23:48:34,027 INFO L495 AbstractCegarLoop]: Abstraction has 16438 states and 23322 transitions. [2022-07-13 23:48:34,027 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 3 states have internal predecessors, (101), 2 states have call successors, (17), 5 states have call predecessors, (17), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2022-07-13 23:48:34,028 INFO L276 IsEmpty]: Start isEmpty. Operand 16438 states and 23322 transitions. [2022-07-13 23:48:34,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2022-07-13 23:48:34,032 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 23:48:34,032 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-07-13 23:48:34,032 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-07-13 23:48:34,033 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 23:48:34,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 23:48:34,033 INFO L85 PathProgramCache]: Analyzing trace with hash 2060689814, now seen corresponding path program 1 times [2022-07-13 23:48:34,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 23:48:34,033 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559898662] [2022-07-13 23:48:34,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 23:48:34,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 23:48:34,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:48:34,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 23:48:34,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:48:34,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:48:34,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:48:34,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-13 23:48:34,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:48:34,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:48:34,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:48:34,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-13 23:48:34,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:48:34,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:48:34,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:48:34,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-13 23:48:34,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:48:34,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-13 23:48:34,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:48:34,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-13 23:48:34,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:48:34,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-07-13 23:48:34,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:48:34,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:48:34,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:48:34,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 23:48:34,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:48:34,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:48:34,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:48:34,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-07-13 23:48:34,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:48:34,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:48:34,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:48:34,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-13 23:48:34,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:48:34,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-07-13 23:48:34,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:48:34,431 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2022-07-13 23:48:34,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 23:48:34,432 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1559898662] [2022-07-13 23:48:34,432 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1559898662] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 23:48:34,432 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 23:48:34,432 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-13 23:48:34,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805687921] [2022-07-13 23:48:34,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 23:48:34,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 23:48:34,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 23:48:34,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 23:48:34,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-13 23:48:34,434 INFO L87 Difference]: Start difference. First operand 16438 states and 23322 transitions. Second operand has 6 states, 6 states have (on average 15.0) internal successors, (90), 3 states have internal predecessors, (90), 3 states have call successors, (18), 6 states have call predecessors, (18), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-07-13 23:48:37,593 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-13 23:48:38,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 23:48:38,758 INFO L93 Difference]: Finished difference Result 34883 states and 49969 transitions. [2022-07-13 23:48:38,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-13 23:48:38,759 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.0) internal successors, (90), 3 states have internal predecessors, (90), 3 states have call successors, (18), 6 states have call predecessors, (18), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 151 [2022-07-13 23:48:38,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 23:48:38,831 INFO L225 Difference]: With dead ends: 34883 [2022-07-13 23:48:38,831 INFO L226 Difference]: Without dead ends: 18463 [2022-07-13 23:48:38,874 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 40 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2022-07-13 23:48:38,874 INFO L413 NwaCegarLoop]: 1079 mSDtfsCounter, 1174 mSDsluCounter, 2113 mSDsCounter, 0 mSdLazyCounter, 772 mSolverCounterSat, 629 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1211 SdHoareTripleChecker+Valid, 3192 SdHoareTripleChecker+Invalid, 1402 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 629 IncrementalHoareTripleChecker+Valid, 772 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2022-07-13 23:48:38,875 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1211 Valid, 3192 Invalid, 1402 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [629 Valid, 772 Invalid, 1 Unknown, 0 Unchecked, 3.4s Time] [2022-07-13 23:48:38,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18463 states. [2022-07-13 23:48:39,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18463 to 16292. [2022-07-13 23:48:39,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16292 states, 13346 states have (on average 1.4051401168889555) internal successors, (18753), 13517 states have internal predecessors, (18753), 2179 states have call successors, (2179), 798 states have call predecessors, (2179), 766 states have return successors, (2128), 2102 states have call predecessors, (2128), 2128 states have call successors, (2128) [2022-07-13 23:48:39,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16292 states to 16292 states and 23060 transitions. [2022-07-13 23:48:39,622 INFO L78 Accepts]: Start accepts. Automaton has 16292 states and 23060 transitions. Word has length 151 [2022-07-13 23:48:39,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 23:48:39,622 INFO L495 AbstractCegarLoop]: Abstraction has 16292 states and 23060 transitions. [2022-07-13 23:48:39,622 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.0) internal successors, (90), 3 states have internal predecessors, (90), 3 states have call successors, (18), 6 states have call predecessors, (18), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-07-13 23:48:39,622 INFO L276 IsEmpty]: Start isEmpty. Operand 16292 states and 23060 transitions. [2022-07-13 23:48:39,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2022-07-13 23:48:39,628 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 23:48:39,628 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 23:48:39,628 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-07-13 23:48:39,628 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 23:48:39,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 23:48:39,629 INFO L85 PathProgramCache]: Analyzing trace with hash -1394204131, now seen corresponding path program 1 times [2022-07-13 23:48:39,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 23:48:39,629 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1715044505] [2022-07-13 23:48:39,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 23:48:39,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 23:48:39,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:48:40,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 23:48:40,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:48:40,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:48:40,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:48:40,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-13 23:48:40,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:48:40,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:48:40,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:48:40,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-13 23:48:40,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:48:40,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:48:40,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:48:40,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:48:40,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:48:40,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 23:48:40,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:48:40,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-13 23:48:40,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:48:40,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-07-13 23:48:40,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:48:40,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:48:40,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:48:40,075 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2022-07-13 23:48:40,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 23:48:40,075 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1715044505] [2022-07-13 23:48:40,075 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1715044505] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 23:48:40,075 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 23:48:40,075 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-13 23:48:40,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864051198] [2022-07-13 23:48:40,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 23:48:40,076 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 23:48:40,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 23:48:40,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 23:48:40,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-13 23:48:40,077 INFO L87 Difference]: Start difference. First operand 16292 states and 23060 transitions. Second operand has 6 states, 6 states have (on average 17.333333333333332) internal successors, (104), 3 states have internal predecessors, (104), 3 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-07-13 23:48:41,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 23:48:41,483 INFO L93 Difference]: Finished difference Result 32630 states and 46503 transitions. [2022-07-13 23:48:41,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-13 23:48:41,484 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.333333333333332) internal successors, (104), 3 states have internal predecessors, (104), 3 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 151 [2022-07-13 23:48:41,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 23:48:41,532 INFO L225 Difference]: With dead ends: 32630 [2022-07-13 23:48:41,532 INFO L226 Difference]: Without dead ends: 15272 [2022-07-13 23:48:41,575 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-07-13 23:48:41,576 INFO L413 NwaCegarLoop]: 739 mSDtfsCounter, 872 mSDsluCounter, 948 mSDsCounter, 0 mSdLazyCounter, 255 mSolverCounterSat, 330 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 908 SdHoareTripleChecker+Valid, 1687 SdHoareTripleChecker+Invalid, 585 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 330 IncrementalHoareTripleChecker+Valid, 255 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-13 23:48:41,576 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [908 Valid, 1687 Invalid, 585 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [330 Valid, 255 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-13 23:48:41,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15272 states. [2022-07-13 23:48:42,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15272 to 14228. [2022-07-13 23:48:42,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14228 states, 11664 states have (on average 1.4020061728395061) internal successors, (16353), 11826 states have internal predecessors, (16353), 1912 states have call successors, (1912), 683 states have call predecessors, (1912), 651 states have return successors, (1861), 1835 states have call predecessors, (1861), 1861 states have call successors, (1861) [2022-07-13 23:48:42,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14228 states to 14228 states and 20126 transitions. [2022-07-13 23:48:42,376 INFO L78 Accepts]: Start accepts. Automaton has 14228 states and 20126 transitions. Word has length 151 [2022-07-13 23:48:42,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 23:48:42,377 INFO L495 AbstractCegarLoop]: Abstraction has 14228 states and 20126 transitions. [2022-07-13 23:48:42,377 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.333333333333332) internal successors, (104), 3 states have internal predecessors, (104), 3 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-07-13 23:48:42,377 INFO L276 IsEmpty]: Start isEmpty. Operand 14228 states and 20126 transitions. [2022-07-13 23:48:42,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2022-07-13 23:48:42,382 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 23:48:42,382 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 23:48:42,382 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-07-13 23:48:42,382 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 23:48:42,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 23:48:42,383 INFO L85 PathProgramCache]: Analyzing trace with hash -776232164, now seen corresponding path program 1 times [2022-07-13 23:48:42,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 23:48:42,383 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [357298704] [2022-07-13 23:48:42,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 23:48:42,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 23:48:42,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:48:42,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 23:48:42,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:48:42,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:48:42,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:48:42,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-13 23:48:42,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:48:42,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:48:42,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:48:42,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-13 23:48:42,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:48:42,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:48:42,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:48:42,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-07-13 23:48:42,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:48:42,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:48:42,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:48:42,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:48:42,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:48:42,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 23:48:42,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:48:42,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-13 23:48:42,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:48:42,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2022-07-13 23:48:42,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:48:42,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:48:42,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:48:42,721 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2022-07-13 23:48:42,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 23:48:42,721 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [357298704] [2022-07-13 23:48:42,721 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [357298704] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 23:48:42,721 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 23:48:42,721 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-13 23:48:42,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815257882] [2022-07-13 23:48:42,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 23:48:42,722 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 23:48:42,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 23:48:42,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 23:48:42,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-13 23:48:42,723 INFO L87 Difference]: Start difference. First operand 14228 states and 20126 transitions. Second operand has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 3 states have internal predecessors, (97), 2 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-13 23:48:44,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 23:48:44,437 INFO L93 Difference]: Finished difference Result 31516 states and 45011 transitions. [2022-07-13 23:48:44,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-13 23:48:44,437 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 3 states have internal predecessors, (97), 2 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 164 [2022-07-13 23:48:44,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 23:48:44,475 INFO L225 Difference]: With dead ends: 31516 [2022-07-13 23:48:44,475 INFO L226 Difference]: Without dead ends: 17425 [2022-07-13 23:48:44,495 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-07-13 23:48:44,495 INFO L413 NwaCegarLoop]: 1187 mSDtfsCounter, 962 mSDsluCounter, 1603 mSDsCounter, 0 mSdLazyCounter, 702 mSolverCounterSat, 496 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1026 SdHoareTripleChecker+Valid, 2790 SdHoareTripleChecker+Invalid, 1198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 496 IncrementalHoareTripleChecker+Valid, 702 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-13 23:48:44,496 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1026 Valid, 2790 Invalid, 1198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [496 Valid, 702 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-13 23:48:44,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17425 states. [2022-07-13 23:48:45,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17425 to 16360. [2022-07-13 23:48:45,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16360 states, 13427 states have (on average 1.4004617561629553) internal successors, (18804), 13610 states have internal predecessors, (18804), 2188 states have call successors, (2188), 779 states have call predecessors, (2188), 744 states have return successors, (2134), 2105 states have call predecessors, (2134), 2134 states have call successors, (2134) [2022-07-13 23:48:45,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16360 states to 16360 states and 23126 transitions. [2022-07-13 23:48:45,076 INFO L78 Accepts]: Start accepts. Automaton has 16360 states and 23126 transitions. Word has length 164 [2022-07-13 23:48:45,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 23:48:45,077 INFO L495 AbstractCegarLoop]: Abstraction has 16360 states and 23126 transitions. [2022-07-13 23:48:45,077 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 3 states have internal predecessors, (97), 2 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-13 23:48:45,077 INFO L276 IsEmpty]: Start isEmpty. Operand 16360 states and 23126 transitions. [2022-07-13 23:48:45,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2022-07-13 23:48:45,084 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 23:48:45,084 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 23:48:45,084 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-07-13 23:48:45,084 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 23:48:45,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 23:48:45,085 INFO L85 PathProgramCache]: Analyzing trace with hash -2030378358, now seen corresponding path program 1 times [2022-07-13 23:48:45,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 23:48:45,085 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [773325505] [2022-07-13 23:48:45,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 23:48:45,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 23:48:45,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:48:45,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 23:48:45,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:48:45,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:48:45,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:48:45,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-13 23:48:45,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:48:45,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:48:45,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:48:45,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-13 23:48:45,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:48:45,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:48:45,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:48:45,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-07-13 23:48:45,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:48:45,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:48:45,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:48:45,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:48:45,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:48:45,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 23:48:45,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:48:45,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-13 23:48:45,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:48:45,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2022-07-13 23:48:45,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:48:45,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:48:45,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:48:45,519 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2022-07-13 23:48:45,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 23:48:45,519 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [773325505] [2022-07-13 23:48:45,519 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [773325505] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 23:48:45,520 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 23:48:45,520 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-13 23:48:45,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227492563] [2022-07-13 23:48:45,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 23:48:45,520 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 23:48:45,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 23:48:45,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 23:48:45,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-13 23:48:45,521 INFO L87 Difference]: Start difference. First operand 16360 states and 23126 transitions. Second operand has 6 states, 6 states have (on average 16.5) internal successors, (99), 3 states have internal predecessors, (99), 2 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-13 23:48:47,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 23:48:47,262 INFO L93 Difference]: Finished difference Result 35909 states and 51218 transitions. [2022-07-13 23:48:47,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-13 23:48:47,264 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.5) internal successors, (99), 3 states have internal predecessors, (99), 2 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 170 [2022-07-13 23:48:47,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 23:48:47,321 INFO L225 Difference]: With dead ends: 35909 [2022-07-13 23:48:47,321 INFO L226 Difference]: Without dead ends: 19686 [2022-07-13 23:48:47,351 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-07-13 23:48:47,352 INFO L413 NwaCegarLoop]: 1186 mSDtfsCounter, 960 mSDsluCounter, 1603 mSDsCounter, 0 mSdLazyCounter, 699 mSolverCounterSat, 496 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1024 SdHoareTripleChecker+Valid, 2789 SdHoareTripleChecker+Invalid, 1195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 496 IncrementalHoareTripleChecker+Valid, 699 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-13 23:48:47,352 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1024 Valid, 2789 Invalid, 1195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [496 Valid, 699 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-13 23:48:47,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19686 states. [2022-07-13 23:48:48,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19686 to 18492. [2022-07-13 23:48:48,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18492 states, 15190 states have (on average 1.3992758393680054) internal successors, (21255), 15394 states have internal predecessors, (21255), 2464 states have call successors, (2464), 875 states have call predecessors, (2464), 837 states have return successors, (2407), 2375 states have call predecessors, (2407), 2407 states have call successors, (2407) [2022-07-13 23:48:48,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18492 states to 18492 states and 26126 transitions. [2022-07-13 23:48:48,062 INFO L78 Accepts]: Start accepts. Automaton has 18492 states and 26126 transitions. Word has length 170 [2022-07-13 23:48:48,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 23:48:48,062 INFO L495 AbstractCegarLoop]: Abstraction has 18492 states and 26126 transitions. [2022-07-13 23:48:48,062 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.5) internal successors, (99), 3 states have internal predecessors, (99), 2 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-13 23:48:48,063 INFO L276 IsEmpty]: Start isEmpty. Operand 18492 states and 26126 transitions. [2022-07-13 23:48:48,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2022-07-13 23:48:48,069 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 23:48:48,069 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 23:48:48,069 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-07-13 23:48:48,070 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 23:48:48,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 23:48:48,070 INFO L85 PathProgramCache]: Analyzing trace with hash -637865929, now seen corresponding path program 1 times [2022-07-13 23:48:48,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 23:48:48,070 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1405925028] [2022-07-13 23:48:48,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 23:48:48,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 23:48:48,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:48:48,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 23:48:48,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:48:48,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:48:48,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:48:48,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-13 23:48:48,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:48:48,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:48:48,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:48:48,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-13 23:48:48,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:48:48,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:48:48,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:48:48,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-07-13 23:48:48,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:48:48,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:48:48,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:48:48,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:48:48,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:48:48,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 23:48:48,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:48:48,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-13 23:48:48,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:48:48,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2022-07-13 23:48:48,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:48:48,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:48:48,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:48:48,410 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2022-07-13 23:48:48,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 23:48:48,410 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1405925028] [2022-07-13 23:48:48,410 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1405925028] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 23:48:48,410 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 23:48:48,411 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-13 23:48:48,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448171537] [2022-07-13 23:48:48,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 23:48:48,411 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 23:48:48,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 23:48:48,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 23:48:48,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-13 23:48:48,412 INFO L87 Difference]: Start difference. First operand 18492 states and 26126 transitions. Second operand has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 3 states have internal predecessors, (100), 2 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-13 23:48:50,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 23:48:50,381 INFO L93 Difference]: Finished difference Result 40302 states and 57425 transitions. [2022-07-13 23:48:50,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-13 23:48:50,382 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 3 states have internal predecessors, (100), 2 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 172 [2022-07-13 23:48:50,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 23:48:50,449 INFO L225 Difference]: With dead ends: 40302 [2022-07-13 23:48:50,449 INFO L226 Difference]: Without dead ends: 21947 [2022-07-13 23:48:50,492 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-07-13 23:48:50,492 INFO L413 NwaCegarLoop]: 1186 mSDtfsCounter, 623 mSDsluCounter, 2223 mSDsCounter, 0 mSdLazyCounter, 857 mSolverCounterSat, 228 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 687 SdHoareTripleChecker+Valid, 3409 SdHoareTripleChecker+Invalid, 1085 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 228 IncrementalHoareTripleChecker+Valid, 857 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-07-13 23:48:50,493 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [687 Valid, 3409 Invalid, 1085 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [228 Valid, 857 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-07-13 23:48:50,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21947 states. [2022-07-13 23:48:51,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21947 to 20624. [2022-07-13 23:48:51,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20624 states, 16953 states have (on average 1.3983365775968855) internal successors, (23706), 17178 states have internal predecessors, (23706), 2740 states have call successors, (2740), 971 states have call predecessors, (2740), 930 states have return successors, (2680), 2645 states have call predecessors, (2680), 2680 states have call successors, (2680) [2022-07-13 23:48:51,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20624 states to 20624 states and 29126 transitions. [2022-07-13 23:48:51,457 INFO L78 Accepts]: Start accepts. Automaton has 20624 states and 29126 transitions. Word has length 172 [2022-07-13 23:48:51,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 23:48:51,458 INFO L495 AbstractCegarLoop]: Abstraction has 20624 states and 29126 transitions. [2022-07-13 23:48:51,458 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 3 states have internal predecessors, (100), 2 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-13 23:48:51,458 INFO L276 IsEmpty]: Start isEmpty. Operand 20624 states and 29126 transitions. [2022-07-13 23:48:51,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2022-07-13 23:48:51,465 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 23:48:51,465 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 23:48:51,465 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-07-13 23:48:51,466 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 23:48:51,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 23:48:51,466 INFO L85 PathProgramCache]: Analyzing trace with hash 1133993157, now seen corresponding path program 1 times [2022-07-13 23:48:51,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 23:48:51,466 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2062444191] [2022-07-13 23:48:51,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 23:48:51,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 23:48:51,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:48:51,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 23:48:51,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:48:51,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:48:51,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:48:51,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-13 23:48:51,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:48:51,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:48:51,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:48:51,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-13 23:48:51,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:48:51,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:48:51,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:48:51,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-13 23:48:51,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:48:51,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-07-13 23:48:51,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:48:51,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:48:51,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:48:51,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:48:51,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:48:51,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 23:48:51,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:48:51,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-13 23:48:51,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:48:51,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-07-13 23:48:51,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:48:51,856 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-07-13 23:48:51,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 23:48:51,857 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2062444191] [2022-07-13 23:48:51,857 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2062444191] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 23:48:51,857 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 23:48:51,857 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-13 23:48:51,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994238268] [2022-07-13 23:48:51,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 23:48:51,858 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 23:48:51,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 23:48:51,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 23:48:51,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-13 23:48:51,859 INFO L87 Difference]: Start difference. First operand 20624 states and 29126 transitions. Second operand has 6 states, 6 states have (on average 19.833333333333332) internal successors, (119), 3 states have internal predecessors, (119), 2 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-13 23:48:53,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 23:48:53,477 INFO L93 Difference]: Finished difference Result 45039 states and 63547 transitions. [2022-07-13 23:48:53,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-13 23:48:53,478 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 19.833333333333332) internal successors, (119), 3 states have internal predecessors, (119), 2 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 170 [2022-07-13 23:48:53,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 23:48:53,545 INFO L225 Difference]: With dead ends: 45039 [2022-07-13 23:48:53,545 INFO L226 Difference]: Without dead ends: 24552 [2022-07-13 23:48:53,587 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-07-13 23:48:53,587 INFO L413 NwaCegarLoop]: 805 mSDtfsCounter, 1097 mSDsluCounter, 1198 mSDsCounter, 0 mSdLazyCounter, 317 mSolverCounterSat, 505 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1135 SdHoareTripleChecker+Valid, 2003 SdHoareTripleChecker+Invalid, 822 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 505 IncrementalHoareTripleChecker+Valid, 317 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-13 23:48:53,588 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1135 Valid, 2003 Invalid, 822 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [505 Valid, 317 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-13 23:48:53,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24552 states.