./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 6c24879c 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-?-6c24879 [2022-07-12 12:06:47,187 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-12 12:06:47,188 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-12 12:06:47,233 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-12 12:06:47,233 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-12 12:06:47,234 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-12 12:06:47,235 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-12 12:06:47,236 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-12 12:06:47,237 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-12 12:06:47,238 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-12 12:06:47,238 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-12 12:06:47,239 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-12 12:06:47,240 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-12 12:06:47,240 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-12 12:06:47,241 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-12 12:06:47,242 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-12 12:06:47,242 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-12 12:06:47,246 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-12 12:06:47,248 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-12 12:06:47,260 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-12 12:06:47,261 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-12 12:06:47,262 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-12 12:06:47,262 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-12 12:06:47,263 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-12 12:06:47,264 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-12 12:06:47,265 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-12 12:06:47,265 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-12 12:06:47,266 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-12 12:06:47,266 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-12 12:06:47,267 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-12 12:06:47,267 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-12 12:06:47,267 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-12 12:06:47,268 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-12 12:06:47,268 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-12 12:06:47,269 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-12 12:06:47,269 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-12 12:06:47,270 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-12 12:06:47,270 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-12 12:06:47,270 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-12 12:06:47,270 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-12 12:06:47,271 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-12 12:06:47,276 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-12 12:06:47,276 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-07-12 12:06:47,296 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-12 12:06:47,299 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-12 12:06:47,300 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-12 12:06:47,300 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-12 12:06:47,300 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-12 12:06:47,301 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-12 12:06:47,301 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-12 12:06:47,301 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-12 12:06:47,301 INFO L138 SettingsManager]: * Use SBE=true [2022-07-12 12:06:47,302 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-12 12:06:47,302 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-12 12:06:47,302 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-12 12:06:47,303 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-12 12:06:47,303 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-12 12:06:47,303 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-12 12:06:47,303 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-12 12:06:47,303 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-12 12:06:47,303 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-12 12:06:47,304 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-12 12:06:47,305 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-12 12:06:47,306 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-12 12:06:47,306 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 12:06:47,307 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-12 12:06:47,307 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-12 12:06:47,307 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-12 12:06:47,307 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-12 12:06:47,307 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-12 12:06:47,307 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-12 12:06:47,307 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-12 12:06:47,307 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-12 12:06:47,307 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7d6844ab51374c8e656234daa6d7df2c3927c38bae9fcbeafc3fadf6f3b893b1 [2022-07-12 12:06:47,500 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-12 12:06:47,520 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-12 12:06:47,521 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-12 12:06:47,522 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-12 12:06:47,522 INFO L275 PluginConnector]: CDTParser initialized [2022-07-12 12:06:47,523 INFO L432 ainManager$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 [2022-07-12 12:06:47,568 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a139df81c/49f34d74493243908d51352c4625577d/FLAG3e3fd586a [2022-07-12 12:06:48,069 INFO L306 CDTParser]: Found 1 translation units. [2022-07-12 12:06:48,073 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 [2022-07-12 12:06:48,106 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a139df81c/49f34d74493243908d51352c4625577d/FLAG3e3fd586a [2022-07-12 12:06:48,599 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a139df81c/49f34d74493243908d51352c4625577d [2022-07-12 12:06:48,602 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-12 12:06:48,603 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-12 12:06:48,607 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-12 12:06:48,607 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-12 12:06:48,610 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-12 12:06:48,610 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 12:06:48" (1/1) ... [2022-07-12 12:06:48,612 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@79080180 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 12:06:48, skipping insertion in model container [2022-07-12 12:06:48,613 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 12:06:48" (1/1) ... [2022-07-12 12:06:48,617 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-12 12:06:48,673 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 12:06:49,174 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] [2022-07-12 12:06:49,207 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 12:06:49,303 INFO L203 MainTranslator]: Completed pre-run [2022-07-12 12:06:49,412 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] [2022-07-12 12:06:49,450 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 12:06:49,542 INFO L208 MainTranslator]: Completed translation [2022-07-12 12:06:49,543 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 12:06:49 WrapperNode [2022-07-12 12:06:49,544 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-12 12:06:49,545 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-12 12:06:49,545 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-12 12:06:49,545 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-12 12:06:49,551 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 12:06:49" (1/1) ... [2022-07-12 12:06:49,629 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 12:06:49" (1/1) ... [2022-07-12 12:06:49,818 INFO L137 Inliner]: procedures = 133, calls = 4943, calls flagged for inlining = 57, calls inlined = 51, statements flattened = 6018 [2022-07-12 12:06:49,819 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-12 12:06:49,820 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-12 12:06:49,821 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-12 12:06:49,821 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-12 12:06:49,827 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 12:06:49" (1/1) ... [2022-07-12 12:06:49,827 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 12:06:49" (1/1) ... [2022-07-12 12:06:49,862 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 12:06:49" (1/1) ... [2022-07-12 12:06:49,863 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 12:06:49" (1/1) ... [2022-07-12 12:06:49,975 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 12:06:49" (1/1) ... [2022-07-12 12:06:49,987 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 12:06:49" (1/1) ... [2022-07-12 12:06:50,003 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 12:06:49" (1/1) ... [2022-07-12 12:06:50,021 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-12 12:06:50,023 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-12 12:06:50,023 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-12 12:06:50,023 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-12 12:06:50,024 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 12:06:49" (1/1) ... [2022-07-12 12:06:50,032 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 12:06:50,040 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 12:06:50,065 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) [2022-07-12 12:06:50,084 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 [2022-07-12 12:06:50,096 INFO L130 BoogieDeclarations]: Found specification of procedure abituguru3_wait_while_busy [2022-07-12 12:06:50,096 INFO L138 BoogieDeclarations]: Found implementation of procedure abituguru3_wait_while_busy [2022-07-12 12:06:50,096 INFO L130 BoogieDeclarations]: Found specification of procedure dev_get_drvdata [2022-07-12 12:06:50,096 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_get_drvdata [2022-07-12 12:06:50,097 INFO L130 BoogieDeclarations]: Found specification of procedure abituguru3_wait_for_read [2022-07-12 12:06:50,097 INFO L138 BoogieDeclarations]: Found implementation of procedure abituguru3_wait_for_read [2022-07-12 12:06:50,097 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2022-07-12 12:06:50,097 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2022-07-12 12:06:50,097 INFO L130 BoogieDeclarations]: Found specification of procedure platform_driver_unregister [2022-07-12 12:06:50,097 INFO L138 BoogieDeclarations]: Found implementation of procedure platform_driver_unregister [2022-07-12 12:06:50,098 INFO L130 BoogieDeclarations]: Found specification of procedure dmi_get_system_info [2022-07-12 12:06:50,098 INFO L138 BoogieDeclarations]: Found implementation of procedure dmi_get_system_info [2022-07-12 12:06:50,098 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-12 12:06:50,098 INFO L130 BoogieDeclarations]: Found specification of procedure abituguru3_read [2022-07-12 12:06:50,098 INFO L138 BoogieDeclarations]: Found implementation of procedure abituguru3_read [2022-07-12 12:06:50,098 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-07-12 12:06:50,098 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-07-12 12:06:50,098 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-12 12:06:50,099 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-07-12 12:06:50,099 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-07-12 12:06:50,099 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-07-12 12:06:50,099 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-07-12 12:06:50,099 INFO L130 BoogieDeclarations]: Found specification of procedure device_create_file [2022-07-12 12:06:50,099 INFO L138 BoogieDeclarations]: Found implementation of procedure device_create_file [2022-07-12 12:06:50,099 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_update_lock_of_abituguru3_data [2022-07-12 12:06:50,100 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_update_lock_of_abituguru3_data [2022-07-12 12:06:50,100 INFO L130 BoogieDeclarations]: Found specification of procedure abituguru3_suspend [2022-07-12 12:06:50,100 INFO L138 BoogieDeclarations]: Found implementation of procedure abituguru3_suspend [2022-07-12 12:06:50,100 INFO L130 BoogieDeclarations]: Found specification of procedure abituguru3_read_increment_offset [2022-07-12 12:06:50,100 INFO L138 BoogieDeclarations]: Found implementation of procedure abituguru3_read_increment_offset [2022-07-12 12:06:50,100 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-12 12:06:50,100 INFO L130 BoogieDeclarations]: Found specification of procedure inb_p [2022-07-12 12:06:50,100 INFO L138 BoogieDeclarations]: Found implementation of procedure inb_p [2022-07-12 12:06:50,101 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2022-07-12 12:06:50,101 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2022-07-12 12:06:50,101 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-12 12:06:50,101 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-12 12:06:50,101 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-12 12:06:50,101 INFO L130 BoogieDeclarations]: Found specification of procedure abituguru3_update_device [2022-07-12 12:06:50,101 INFO L138 BoogieDeclarations]: Found implementation of procedure abituguru3_update_device [2022-07-12 12:06:50,101 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-12 12:06:50,101 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-12 12:06:50,102 INFO L130 BoogieDeclarations]: Found specification of procedure platform_set_drvdata [2022-07-12 12:06:50,102 INFO L138 BoogieDeclarations]: Found implementation of procedure platform_set_drvdata [2022-07-12 12:06:50,102 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-07-12 12:06:50,102 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_update_lock_of_abituguru3_data [2022-07-12 12:06:50,102 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_update_lock_of_abituguru3_data [2022-07-12 12:06:50,103 INFO L130 BoogieDeclarations]: Found specification of procedure strcspn [2022-07-12 12:06:50,103 INFO L130 BoogieDeclarations]: Found specification of procedure inb [2022-07-12 12:06:50,103 INFO L138 BoogieDeclarations]: Found implementation of procedure inb [2022-07-12 12:06:50,103 INFO L130 BoogieDeclarations]: Found specification of procedure outb [2022-07-12 12:06:50,103 INFO L138 BoogieDeclarations]: Found implementation of procedure outb [2022-07-12 12:06:50,103 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-12 12:06:50,103 INFO L130 BoogieDeclarations]: Found specification of procedure device_remove_file [2022-07-12 12:06:50,104 INFO L138 BoogieDeclarations]: Found implementation of procedure device_remove_file [2022-07-12 12:06:50,104 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-12 12:06:50,104 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-12 12:06:50,105 INFO L130 BoogieDeclarations]: Found specification of procedure abituguru3_resume [2022-07-12 12:06:50,105 INFO L138 BoogieDeclarations]: Found implementation of procedure abituguru3_resume [2022-07-12 12:06:50,106 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2022-07-12 12:06:50,106 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2022-07-12 12:06:50,360 INFO L234 CfgBuilder]: Building ICFG [2022-07-12 12:06:50,364 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-12 12:07:00,099 INFO L275 CfgBuilder]: Performing block encoding [2022-07-12 12:07:00,108 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-12 12:07:00,108 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-12 12:07:00,111 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 12:07:00 BoogieIcfgContainer [2022-07-12 12:07:00,111 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-12 12:07:00,112 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-12 12:07:00,112 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-12 12:07:00,115 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-12 12:07:00,115 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.07 12:06:48" (1/3) ... [2022-07-12 12:07:00,116 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a3dca9d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 12:07:00, skipping insertion in model container [2022-07-12 12:07:00,116 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 12:06:49" (2/3) ... [2022-07-12 12:07:00,116 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a3dca9d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 12:07:00, skipping insertion in model container [2022-07-12 12:07:00,116 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 12:07:00" (3/3) ... [2022-07-12 12:07:00,117 INFO L111 eAbstractionObserver]: Analyzing ICFG 32_7a_cilled_linux-3.8-rc1-drivers--hwmon--abituguru3.ko-main.cil.out.i [2022-07-12 12:07:00,128 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-12 12:07:00,139 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-12 12:07:00,208 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 12:07:00,213 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@1e608f00, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@406a498b [2022-07-12 12:07:00,213 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-12 12:07:00,218 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) [2022-07-12 12:07:00,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-07-12 12:07:00,230 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 12:07:00,230 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] [2022-07-12 12:07:00,231 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 12:07:00,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 12:07:00,237 INFO L85 PathProgramCache]: Analyzing trace with hash -1860140379, now seen corresponding path program 1 times [2022-07-12 12:07:00,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 12:07:00,244 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1364397918] [2022-07-12 12:07:00,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:07:00,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 12:07:00,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:07:01,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-12 12:07:01,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:07:01,173 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 12:07:01,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 12:07:01,174 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1364397918] [2022-07-12 12:07:01,175 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1364397918] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 12:07:01,175 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 12:07:01,175 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 12:07:01,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055494360] [2022-07-12 12:07:01,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 12:07:01,179 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 12:07:01,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 12:07:01,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 12:07:01,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 12:07:01,209 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) [2022-07-12 12:07:01,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 12:07:01,551 INFO L93 Difference]: Finished difference Result 1407 states and 2087 transitions. [2022-07-12 12:07:01,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 12:07:01,553 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 [2022-07-12 12:07:01,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 12:07:01,573 INFO L225 Difference]: With dead ends: 1407 [2022-07-12 12:07:01,573 INFO L226 Difference]: Without dead ends: 907 [2022-07-12 12:07:01,579 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 [2022-07-12 12:07:01,581 INFO L413 NwaCegarLoop]: 1029 mSDtfsCounter, 682 mSDsluCounter, 613 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s 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, 0.2s IncrementalHoareTripleChecker+Time [2022-07-12 12:07:01,582 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [682 Valid, 1642 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-12 12:07:01,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 907 states. [2022-07-12 12:07:01,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 907 to 903. [2022-07-12 12:07:01,675 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) [2022-07-12 12:07:01,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 903 states to 903 states and 1305 transitions. [2022-07-12 12:07:01,682 INFO L78 Accepts]: Start accepts. Automaton has 903 states and 1305 transitions. Word has length 21 [2022-07-12 12:07:01,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 12:07:01,683 INFO L495 AbstractCegarLoop]: Abstraction has 903 states and 1305 transitions. [2022-07-12 12:07:01,683 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) [2022-07-12 12:07:01,683 INFO L276 IsEmpty]: Start isEmpty. Operand 903 states and 1305 transitions. [2022-07-12 12:07:01,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-07-12 12:07:01,685 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 12:07:01,685 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] [2022-07-12 12:07:01,686 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-12 12:07:01,686 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 12:07:01,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 12:07:01,686 INFO L85 PathProgramCache]: Analyzing trace with hash -1341252181, now seen corresponding path program 1 times [2022-07-12 12:07:01,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 12:07:01,687 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1526490542] [2022-07-12 12:07:01,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:07:01,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 12:07:01,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:07:02,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 12:07:02,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:07:02,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:07:02,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:07:02,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 12:07:02,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 12:07:02,273 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1526490542] [2022-07-12 12:07:02,273 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1526490542] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 12:07:02,273 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 12:07:02,274 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 12:07:02,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313771640] [2022-07-12 12:07:02,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 12:07:02,275 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 12:07:02,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 12:07:02,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 12:07:02,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-12 12:07:02,276 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) [2022-07-12 12:07:03,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 12:07:03,364 INFO L93 Difference]: Finished difference Result 2674 states and 3857 transitions. [2022-07-12 12:07:03,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 12:07:03,364 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 [2022-07-12 12:07:03,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 12:07:03,375 INFO L225 Difference]: With dead ends: 2674 [2022-07-12 12:07:03,375 INFO L226 Difference]: Without dead ends: 1774 [2022-07-12 12:07:03,379 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 [2022-07-12 12:07:03,380 INFO L413 NwaCegarLoop]: 935 mSDtfsCounter, 731 mSDsluCounter, 834 mSDsCounter, 0 mSdLazyCounter, 501 mSolverCounterSat, 232 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 800 SdHoareTripleChecker+Valid, 1769 SdHoareTripleChecker+Invalid, 733 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 232 IncrementalHoareTripleChecker+Valid, 501 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-12 12:07:03,381 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [800 Valid, 1769 Invalid, 733 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [232 Valid, 501 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-12 12:07:03,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1774 states. [2022-07-12 12:07:03,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1774 to 1577. [2022-07-12 12:07:03,436 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) [2022-07-12 12:07:03,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1577 states to 1577 states and 2237 transitions. [2022-07-12 12:07:03,444 INFO L78 Accepts]: Start accepts. Automaton has 1577 states and 2237 transitions. Word has length 28 [2022-07-12 12:07:03,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 12:07:03,444 INFO L495 AbstractCegarLoop]: Abstraction has 1577 states and 2237 transitions. [2022-07-12 12:07:03,444 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) [2022-07-12 12:07:03,445 INFO L276 IsEmpty]: Start isEmpty. Operand 1577 states and 2237 transitions. [2022-07-12 12:07:03,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-07-12 12:07:03,446 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 12:07:03,446 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] [2022-07-12 12:07:03,446 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-12 12:07:03,446 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 12:07:03,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 12:07:03,447 INFO L85 PathProgramCache]: Analyzing trace with hash 1231327051, now seen corresponding path program 1 times [2022-07-12 12:07:03,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 12:07:03,447 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157573981] [2022-07-12 12:07:03,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:07:03,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 12:07:03,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:07:03,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 12:07:03,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:07:03,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:07:03,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:07:03,937 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 12:07:03,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 12:07:03,938 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [157573981] [2022-07-12 12:07:03,938 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [157573981] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 12:07:03,938 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 12:07:03,938 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 12:07:03,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013097424] [2022-07-12 12:07:03,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 12:07:03,939 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 12:07:03,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 12:07:03,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 12:07:03,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 12:07:03,940 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) [2022-07-12 12:07:05,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 12:07:05,963 INFO L93 Difference]: Finished difference Result 5284 states and 7954 transitions. [2022-07-12 12:07:05,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-12 12:07:05,973 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 [2022-07-12 12:07:05,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 12:07:05,990 INFO L225 Difference]: With dead ends: 5284 [2022-07-12 12:07:05,990 INFO L226 Difference]: Without dead ends: 3710 [2022-07-12 12:07:05,998 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 [2022-07-12 12:07:05,999 INFO L413 NwaCegarLoop]: 1429 mSDtfsCounter, 1648 mSDsluCounter, 4715 mSDsCounter, 0 mSdLazyCounter, 1414 mSolverCounterSat, 284 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1718 SdHoareTripleChecker+Valid, 6144 SdHoareTripleChecker+Invalid, 1698 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 284 IncrementalHoareTripleChecker+Valid, 1414 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-07-12 12:07:05,999 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1718 Valid, 6144 Invalid, 1698 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [284 Valid, 1414 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-07-12 12:07:06,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3710 states. [2022-07-12 12:07:06,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3710 to 1599. [2022-07-12 12:07:06,101 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) [2022-07-12 12:07:06,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1599 states to 1599 states and 2269 transitions. [2022-07-12 12:07:06,108 INFO L78 Accepts]: Start accepts. Automaton has 1599 states and 2269 transitions. Word has length 33 [2022-07-12 12:07:06,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 12:07:06,108 INFO L495 AbstractCegarLoop]: Abstraction has 1599 states and 2269 transitions. [2022-07-12 12:07:06,108 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) [2022-07-12 12:07:06,108 INFO L276 IsEmpty]: Start isEmpty. Operand 1599 states and 2269 transitions. [2022-07-12 12:07:06,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-07-12 12:07:06,110 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 12:07:06,110 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] [2022-07-12 12:07:06,110 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-12 12:07:06,110 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 12:07:06,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 12:07:06,111 INFO L85 PathProgramCache]: Analyzing trace with hash -574111283, now seen corresponding path program 1 times [2022-07-12 12:07:06,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 12:07:06,111 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1802243102] [2022-07-12 12:07:06,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:07:06,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 12:07:06,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:07:06,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 12:07:06,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:07:06,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:07:06,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:07:06,586 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 12:07:06,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 12:07:06,586 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1802243102] [2022-07-12 12:07:06,587 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1802243102] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 12:07:06,587 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 12:07:06,587 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 12:07:06,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862076685] [2022-07-12 12:07:06,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 12:07:06,590 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 12:07:06,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 12:07:06,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 12:07:06,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-12 12:07:06,592 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) [2022-07-12 12:07:07,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 12:07:07,179 INFO L93 Difference]: Finished difference Result 1779 states and 2570 transitions. [2022-07-12 12:07:07,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-12 12:07:07,180 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 [2022-07-12 12:07:07,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 12:07:07,189 INFO L225 Difference]: With dead ends: 1779 [2022-07-12 12:07:07,189 INFO L226 Difference]: Without dead ends: 1776 [2022-07-12 12:07:07,190 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 [2022-07-12 12:07:07,196 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, 0.5s IncrementalHoareTripleChecker+Time [2022-07-12 12:07:07,198 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [857 Valid, 1101 Invalid, 311 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [204 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-12 12:07:07,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1776 states. [2022-07-12 12:07:07,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1776 to 1598. [2022-07-12 12:07:07,245 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) [2022-07-12 12:07:07,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1598 states to 1598 states and 2267 transitions. [2022-07-12 12:07:07,251 INFO L78 Accepts]: Start accepts. Automaton has 1598 states and 2267 transitions. Word has length 33 [2022-07-12 12:07:07,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 12:07:07,252 INFO L495 AbstractCegarLoop]: Abstraction has 1598 states and 2267 transitions. [2022-07-12 12:07:07,252 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) [2022-07-12 12:07:07,252 INFO L276 IsEmpty]: Start isEmpty. Operand 1598 states and 2267 transitions. [2022-07-12 12:07:07,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-07-12 12:07:07,255 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 12:07:07,256 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] [2022-07-12 12:07:07,256 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-12 12:07:07,256 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 12:07:07,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 12:07:07,256 INFO L85 PathProgramCache]: Analyzing trace with hash -617764655, now seen corresponding path program 1 times [2022-07-12 12:07:07,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 12:07:07,257 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122655966] [2022-07-12 12:07:07,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:07:07,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 12:07:07,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:07:07,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 12:07:07,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:07:07,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:07:07,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:07:07,713 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 12:07:07,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 12:07:07,713 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [122655966] [2022-07-12 12:07:07,713 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [122655966] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 12:07:07,713 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 12:07:07,714 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 12:07:07,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327231790] [2022-07-12 12:07:07,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 12:07:07,714 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 12:07:07,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 12:07:07,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 12:07:07,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-12 12:07:07,715 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) [2022-07-12 12:07:08,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 12:07:08,315 INFO L93 Difference]: Finished difference Result 1778 states and 2568 transitions. [2022-07-12 12:07:08,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-12 12:07:08,316 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 [2022-07-12 12:07:08,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 12:07:08,323 INFO L225 Difference]: With dead ends: 1778 [2022-07-12 12:07:08,324 INFO L226 Difference]: Without dead ends: 1775 [2022-07-12 12:07:08,325 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 [2022-07-12 12:07:08,326 INFO L413 NwaCegarLoop]: 716 mSDtfsCounter, 815 mSDsluCounter, 382 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 203 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s 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, 0.5s IncrementalHoareTripleChecker+Time [2022-07-12 12:07:08,326 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [854 Valid, 1098 Invalid, 310 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [203 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-12 12:07:08,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1775 states. [2022-07-12 12:07:08,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1775 to 1597. [2022-07-12 12:07:08,381 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) [2022-07-12 12:07:08,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1597 states to 1597 states and 2265 transitions. [2022-07-12 12:07:08,392 INFO L78 Accepts]: Start accepts. Automaton has 1597 states and 2265 transitions. Word has length 34 [2022-07-12 12:07:08,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 12:07:08,393 INFO L495 AbstractCegarLoop]: Abstraction has 1597 states and 2265 transitions. [2022-07-12 12:07:08,393 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) [2022-07-12 12:07:08,393 INFO L276 IsEmpty]: Start isEmpty. Operand 1597 states and 2265 transitions. [2022-07-12 12:07:08,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-07-12 12:07:08,394 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 12:07:08,394 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] [2022-07-12 12:07:08,394 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-12 12:07:08,394 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 12:07:08,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 12:07:08,395 INFO L85 PathProgramCache]: Analyzing trace with hash -1971014320, now seen corresponding path program 1 times [2022-07-12 12:07:08,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 12:07:08,395 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [985826371] [2022-07-12 12:07:08,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:07:08,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 12:07:08,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:07:08,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 12:07:08,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:07:08,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:07:08,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:07:08,851 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 12:07:08,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 12:07:08,851 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [985826371] [2022-07-12 12:07:08,852 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [985826371] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 12:07:08,852 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 12:07:08,852 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 12:07:08,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324996032] [2022-07-12 12:07:08,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 12:07:08,853 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 12:07:08,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 12:07:08,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 12:07:08,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-12 12:07:08,854 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) [2022-07-12 12:07:09,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 12:07:09,824 INFO L93 Difference]: Finished difference Result 4611 states and 6639 transitions. [2022-07-12 12:07:09,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 12:07:09,826 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 [2022-07-12 12:07:09,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 12:07:09,841 INFO L225 Difference]: With dead ends: 4611 [2022-07-12 12:07:09,842 INFO L226 Difference]: Without dead ends: 3005 [2022-07-12 12:07:09,848 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 [2022-07-12 12:07:09,850 INFO L413 NwaCegarLoop]: 741 mSDtfsCounter, 896 mSDsluCounter, 813 mSDsCounter, 0 mSdLazyCounter, 414 mSolverCounterSat, 255 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 955 SdHoareTripleChecker+Valid, 1554 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 [2022-07-12 12:07:09,851 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [955 Valid, 1554 Invalid, 669 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [255 Valid, 414 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-12 12:07:09,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3005 states. [2022-07-12 12:07:09,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3005 to 2778. [2022-07-12 12:07:10,002 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) [2022-07-12 12:07:10,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2778 states to 2778 states and 3954 transitions. [2022-07-12 12:07:10,014 INFO L78 Accepts]: Start accepts. Automaton has 2778 states and 3954 transitions. Word has length 35 [2022-07-12 12:07:10,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 12:07:10,015 INFO L495 AbstractCegarLoop]: Abstraction has 2778 states and 3954 transitions. [2022-07-12 12:07:10,015 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) [2022-07-12 12:07:10,015 INFO L276 IsEmpty]: Start isEmpty. Operand 2778 states and 3954 transitions. [2022-07-12 12:07:10,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-07-12 12:07:10,017 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 12:07:10,018 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] [2022-07-12 12:07:10,018 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-12 12:07:10,018 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 12:07:10,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 12:07:10,020 INFO L85 PathProgramCache]: Analyzing trace with hash -2101219672, now seen corresponding path program 1 times [2022-07-12 12:07:10,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 12:07:10,021 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [249654727] [2022-07-12 12:07:10,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:07:10,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 12:07:10,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:07:10,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 12:07:10,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:07:10,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:07:10,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:07:10,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 12:07:10,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:07:10,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:07:10,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:07:10,463 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-12 12:07:10,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 12:07:10,464 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [249654727] [2022-07-12 12:07:10,464 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [249654727] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 12:07:10,464 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 12:07:10,464 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 12:07:10,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1590537916] [2022-07-12 12:07:10,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 12:07:10,465 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 12:07:10,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 12:07:10,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 12:07:10,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-12 12:07:10,465 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) [2022-07-12 12:07:11,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 12:07:11,631 INFO L93 Difference]: Finished difference Result 7242 states and 10447 transitions. [2022-07-12 12:07:11,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 12:07:11,632 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 [2022-07-12 12:07:11,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 12:07:11,651 INFO L225 Difference]: With dead ends: 7242 [2022-07-12 12:07:11,651 INFO L226 Difference]: Without dead ends: 4467 [2022-07-12 12:07:11,659 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 [2022-07-12 12:07:11,661 INFO L413 NwaCegarLoop]: 978 mSDtfsCounter, 846 mSDsluCounter, 942 mSDsCounter, 0 mSdLazyCounter, 549 mSolverCounterSat, 251 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s 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, 1.0s IncrementalHoareTripleChecker+Time [2022-07-12 12:07:11,661 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [915 Valid, 1920 Invalid, 800 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [251 Valid, 549 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-12 12:07:11,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4467 states. [2022-07-12 12:07:11,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4467 to 4138. [2022-07-12 12:07:11,774 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) [2022-07-12 12:07:11,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4138 states to 4138 states and 5854 transitions. [2022-07-12 12:07:11,787 INFO L78 Accepts]: Start accepts. Automaton has 4138 states and 5854 transitions. Word has length 55 [2022-07-12 12:07:11,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 12:07:11,787 INFO L495 AbstractCegarLoop]: Abstraction has 4138 states and 5854 transitions. [2022-07-12 12:07:11,788 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) [2022-07-12 12:07:11,788 INFO L276 IsEmpty]: Start isEmpty. Operand 4138 states and 5854 transitions. [2022-07-12 12:07:11,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-07-12 12:07:11,793 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 12:07:11,793 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] [2022-07-12 12:07:11,793 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-12 12:07:11,794 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 12:07:11,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 12:07:11,794 INFO L85 PathProgramCache]: Analyzing trace with hash 196374771, now seen corresponding path program 1 times [2022-07-12 12:07:11,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 12:07:11,794 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315315657] [2022-07-12 12:07:11,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:07:11,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 12:07:12,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:07:12,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 12:07:12,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:07:12,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:07:12,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:07:12,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-12 12:07:12,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:07:12,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:07:12,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:07:12,225 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-07-12 12:07:12,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 12:07:12,226 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [315315657] [2022-07-12 12:07:12,226 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [315315657] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 12:07:12,226 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 12:07:12,226 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 12:07:12,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146709788] [2022-07-12 12:07:12,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 12:07:12,228 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 12:07:12,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 12:07:12,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 12:07:12,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-12 12:07:12,229 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) [2022-07-12 12:07:13,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 12:07:13,366 INFO L93 Difference]: Finished difference Result 10056 states and 14407 transitions. [2022-07-12 12:07:13,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 12:07:13,367 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 [2022-07-12 12:07:13,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 12:07:13,394 INFO L225 Difference]: With dead ends: 10056 [2022-07-12 12:07:13,394 INFO L226 Difference]: Without dead ends: 5921 [2022-07-12 12:07:13,407 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 [2022-07-12 12:07:13,408 INFO L413 NwaCegarLoop]: 1228 mSDtfsCounter, 794 mSDsluCounter, 1073 mSDsCounter, 0 mSdLazyCounter, 546 mSolverCounterSat, 225 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s 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, 1.0s IncrementalHoareTripleChecker+Time [2022-07-12 12:07:13,408 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [867 Valid, 2301 Invalid, 771 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [225 Valid, 546 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-12 12:07:13,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5921 states. [2022-07-12 12:07:13,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5921 to 5498. [2022-07-12 12:07:13,588 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) [2022-07-12 12:07:13,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5498 states to 5498 states and 7754 transitions. [2022-07-12 12:07:13,610 INFO L78 Accepts]: Start accepts. Automaton has 5498 states and 7754 transitions. Word has length 75 [2022-07-12 12:07:13,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 12:07:13,610 INFO L495 AbstractCegarLoop]: Abstraction has 5498 states and 7754 transitions. [2022-07-12 12:07:13,611 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) [2022-07-12 12:07:13,611 INFO L276 IsEmpty]: Start isEmpty. Operand 5498 states and 7754 transitions. [2022-07-12 12:07:13,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-07-12 12:07:13,613 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 12:07:13,614 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] [2022-07-12 12:07:13,614 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-12 12:07:13,614 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 12:07:13,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 12:07:13,614 INFO L85 PathProgramCache]: Analyzing trace with hash -1785936298, now seen corresponding path program 1 times [2022-07-12 12:07:13,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 12:07:13,615 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1953530373] [2022-07-12 12:07:13,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:07:13,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 12:07:13,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:07:14,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 12:07:14,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:07:14,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-12 12:07:14,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:07:14,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-12 12:07:14,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:07:14,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-12 12:07:14,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:07:14,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:07:14,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:07:14,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 12:07:14,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:07:14,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:07:14,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:07:14,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-12 12:07:14,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:07:14,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:07:14,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:07:14,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-12 12:07:14,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:07:14,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-12 12:07:14,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:07:14,083 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-12 12:07:14,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 12:07:14,084 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1953530373] [2022-07-12 12:07:14,084 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1953530373] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 12:07:14,084 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 12:07:14,085 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 12:07:14,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481210916] [2022-07-12 12:07:14,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 12:07:14,085 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 12:07:14,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 12:07:14,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 12:07:14,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-12 12:07:14,087 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) [2022-07-12 12:07:17,002 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 [] [2022-07-12 12:07:17,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 12:07:17,523 INFO L93 Difference]: Finished difference Result 13582 states and 19486 transitions. [2022-07-12 12:07:17,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-12 12:07:17,524 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 [2022-07-12 12:07:17,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 12:07:17,567 INFO L225 Difference]: With dead ends: 13582 [2022-07-12 12:07:17,570 INFO L226 Difference]: Without dead ends: 8087 [2022-07-12 12:07:17,590 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 [2022-07-12 12:07:17,591 INFO L413 NwaCegarLoop]: 706 mSDtfsCounter, 1066 mSDsluCounter, 1583 mSDsCounter, 0 mSdLazyCounter, 731 mSolverCounterSat, 551 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1101 SdHoareTripleChecker+Valid, 2289 SdHoareTripleChecker+Invalid, 1283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 551 IncrementalHoareTripleChecker+Valid, 731 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-07-12 12:07:17,591 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1101 Valid, 2289 Invalid, 1283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [551 Valid, 731 Invalid, 1 Unknown, 0 Unchecked, 3.1s Time] [2022-07-12 12:07:17,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8087 states. [2022-07-12 12:07:17,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8087 to 7208. [2022-07-12 12:07:17,880 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) [2022-07-12 12:07:17,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7208 states to 7208 states and 10229 transitions. [2022-07-12 12:07:17,901 INFO L78 Accepts]: Start accepts. Automaton has 7208 states and 10229 transitions. Word has length 92 [2022-07-12 12:07:17,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 12:07:17,902 INFO L495 AbstractCegarLoop]: Abstraction has 7208 states and 10229 transitions. [2022-07-12 12:07:17,902 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) [2022-07-12 12:07:17,903 INFO L276 IsEmpty]: Start isEmpty. Operand 7208 states and 10229 transitions. [2022-07-12 12:07:17,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2022-07-12 12:07:17,910 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 12:07:17,911 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] [2022-07-12 12:07:17,911 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-12 12:07:17,912 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 12:07:17,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 12:07:17,912 INFO L85 PathProgramCache]: Analyzing trace with hash 2081938916, now seen corresponding path program 1 times [2022-07-12 12:07:17,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 12:07:17,912 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1699068706] [2022-07-12 12:07:17,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:07:17,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 12:07:18,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:07:18,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 12:07:18,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:07:18,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:07:18,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:07:18,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-12 12:07:18,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:07:18,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:07:18,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:07:18,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:07:18,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:07:18,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 12:07:18,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:07:18,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-12 12:07:18,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:07:18,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-07-12 12:07:18,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:07:18,366 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-07-12 12:07:18,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 12:07:18,366 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1699068706] [2022-07-12 12:07:18,366 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1699068706] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 12:07:18,366 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1652916907] [2022-07-12 12:07:18,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:07:18,367 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 12:07:18,367 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 12:07:18,369 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) [2022-07-12 12:07:18,371 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-12 12:07:19,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:07:19,897 INFO L263 TraceCheckSpWp]: Trace formula consists of 12129 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-12 12:07:19,907 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 12:07:20,003 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-07-12 12:07:20,003 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 12:07:20,003 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1652916907] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 12:07:20,004 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 12:07:20,004 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [7] total 13 [2022-07-12 12:07:20,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567953807] [2022-07-12 12:07:20,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 12:07:20,005 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-12 12:07:20,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 12:07:20,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-12 12:07:20,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2022-07-12 12:07:20,005 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) [2022-07-12 12:07:20,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 12:07:20,944 INFO L93 Difference]: Finished difference Result 18050 states and 26050 transitions. [2022-07-12 12:07:20,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-12 12:07:20,945 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 [2022-07-12 12:07:20,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 12:07:20,977 INFO L225 Difference]: With dead ends: 18050 [2022-07-12 12:07:20,978 INFO L226 Difference]: Without dead ends: 10805 [2022-07-12 12:07:21,000 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 [2022-07-12 12:07:21,000 INFO L413 NwaCegarLoop]: 975 mSDtfsCounter, 717 mSDsluCounter, 5279 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s 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, 0.6s IncrementalHoareTripleChecker+Time [2022-07-12 12:07:21,000 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [717 Valid, 6254 Invalid, 169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-12 12:07:21,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10805 states. [2022-07-12 12:07:21,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10805 to 7213. [2022-07-12 12:07:21,287 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) [2022-07-12 12:07:21,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7213 states to 7213 states and 10210 transitions. [2022-07-12 12:07:21,306 INFO L78 Accepts]: Start accepts. Automaton has 7213 states and 10210 transitions. Word has length 107 [2022-07-12 12:07:21,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 12:07:21,306 INFO L495 AbstractCegarLoop]: Abstraction has 7213 states and 10210 transitions. [2022-07-12 12:07:21,306 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) [2022-07-12 12:07:21,307 INFO L276 IsEmpty]: Start isEmpty. Operand 7213 states and 10210 transitions. [2022-07-12 12:07:21,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-07-12 12:07:21,311 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 12:07:21,311 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] [2022-07-12 12:07:21,362 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-07-12 12:07:21,531 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 [2022-07-12 12:07:21,532 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 12:07:21,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 12:07:21,532 INFO L85 PathProgramCache]: Analyzing trace with hash 1609003934, now seen corresponding path program 1 times [2022-07-12 12:07:21,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 12:07:21,532 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2132347615] [2022-07-12 12:07:21,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:07:21,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 12:07:21,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:07:21,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 12:07:21,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:07:21,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:07:21,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:07:21,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-12 12:07:21,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:07:21,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:07:21,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:07:21,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-12 12:07:21,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:07:21,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:07:21,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:07:21,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:07:21,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:07:21,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 12:07:21,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:07:21,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-12 12:07:21,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:07:21,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-12 12:07:21,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:07:21,987 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-07-12 12:07:21,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 12:07:21,988 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2132347615] [2022-07-12 12:07:21,988 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2132347615] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 12:07:21,988 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 12:07:21,988 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 12:07:21,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685417842] [2022-07-12 12:07:21,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 12:07:21,989 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 12:07:21,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 12:07:21,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 12:07:21,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-12 12:07:21,990 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) [2022-07-12 12:07:24,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 12:07:24,015 INFO L93 Difference]: Finished difference Result 23671 states and 35308 transitions. [2022-07-12 12:07:24,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-12 12:07:24,016 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 [2022-07-12 12:07:24,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 12:07:24,080 INFO L225 Difference]: With dead ends: 23671 [2022-07-12 12:07:24,080 INFO L226 Difference]: Without dead ends: 16461 [2022-07-12 12:07:24,108 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 [2022-07-12 12:07:24,109 INFO L413 NwaCegarLoop]: 1089 mSDtfsCounter, 1418 mSDsluCounter, 2666 mSDsCounter, 0 mSdLazyCounter, 924 mSolverCounterSat, 459 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1522 SdHoareTripleChecker+Valid, 3755 SdHoareTripleChecker+Invalid, 1383 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 459 IncrementalHoareTripleChecker+Valid, 924 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-07-12 12:07:24,109 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1522 Valid, 3755 Invalid, 1383 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [459 Valid, 924 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-07-12 12:07:24,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16461 states. [2022-07-12 12:07:24,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16461 to 7189. [2022-07-12 12:07:24,510 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) [2022-07-12 12:07:24,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7189 states to 7189 states and 10154 transitions. [2022-07-12 12:07:24,527 INFO L78 Accepts]: Start accepts. Automaton has 7189 states and 10154 transitions. Word has length 133 [2022-07-12 12:07:24,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 12:07:24,527 INFO L495 AbstractCegarLoop]: Abstraction has 7189 states and 10154 transitions. [2022-07-12 12:07:24,527 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) [2022-07-12 12:07:24,527 INFO L276 IsEmpty]: Start isEmpty. Operand 7189 states and 10154 transitions. [2022-07-12 12:07:24,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2022-07-12 12:07:24,532 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 12:07:24,532 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] [2022-07-12 12:07:24,533 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-12 12:07:24,533 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 12:07:24,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 12:07:24,533 INFO L85 PathProgramCache]: Analyzing trace with hash 1955838800, now seen corresponding path program 1 times [2022-07-12 12:07:24,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 12:07:24,533 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [305727152] [2022-07-12 12:07:24,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:07:24,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 12:07:24,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:07:24,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 12:07:24,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:07:24,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:07:24,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:07:24,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 12:07:24,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:07:24,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:07:24,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:07:24,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 12:07:24,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:07:24,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:07:25,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:07:25,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-07-12 12:07:25,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:07:25,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:07:25,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:07:25,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:07:25,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:07:25,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 12:07:25,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:07:25,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-12 12:07:25,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:07:25,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-12 12:07:25,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:07:25,029 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2022-07-12 12:07:25,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 12:07:25,030 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [305727152] [2022-07-12 12:07:25,030 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [305727152] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 12:07:25,030 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 12:07:25,030 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 12:07:25,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919174563] [2022-07-12 12:07:25,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 12:07:25,031 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 12:07:25,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 12:07:25,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 12:07:25,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-12 12:07:25,031 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) [2022-07-12 12:07:27,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 12:07:27,227 INFO L93 Difference]: Finished difference Result 24324 states and 36225 transitions. [2022-07-12 12:07:27,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-12 12:07:27,227 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 136 [2022-07-12 12:07:27,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 12:07:27,274 INFO L225 Difference]: With dead ends: 24324 [2022-07-12 12:07:27,274 INFO L226 Difference]: Without dead ends: 17138 [2022-07-12 12:07:27,291 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 [2022-07-12 12:07:27,292 INFO L413 NwaCegarLoop]: 1718 mSDtfsCounter, 832 mSDsluCounter, 5424 mSDsCounter, 0 mSdLazyCounter, 1134 mSolverCounterSat, 166 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 939 SdHoareTripleChecker+Valid, 7142 SdHoareTripleChecker+Invalid, 1300 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 166 IncrementalHoareTripleChecker+Valid, 1134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-07-12 12:07:27,292 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [939 Valid, 7142 Invalid, 1300 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [166 Valid, 1134 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-07-12 12:07:27,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17138 states. [2022-07-12 12:07:27,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17138 to 7205. [2022-07-12 12:07:27,618 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) [2022-07-12 12:07:27,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7205 states to 7205 states and 10170 transitions. [2022-07-12 12:07:27,636 INFO L78 Accepts]: Start accepts. Automaton has 7205 states and 10170 transitions. Word has length 136 [2022-07-12 12:07:27,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 12:07:27,637 INFO L495 AbstractCegarLoop]: Abstraction has 7205 states and 10170 transitions. [2022-07-12 12:07:27,637 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) [2022-07-12 12:07:27,637 INFO L276 IsEmpty]: Start isEmpty. Operand 7205 states and 10170 transitions. [2022-07-12 12:07:27,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-07-12 12:07:27,642 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 12:07:27,642 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 12:07:27,642 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-12 12:07:27,642 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 12:07:27,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 12:07:27,643 INFO L85 PathProgramCache]: Analyzing trace with hash 250270820, now seen corresponding path program 1 times [2022-07-12 12:07:27,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 12:07:27,643 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [303286951] [2022-07-12 12:07:27,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:07:27,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 12:07:27,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:07:28,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 12:07:28,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:07:28,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:07:28,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:07:28,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 12:07:28,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:07:28,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:07:28,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:07:28,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 12:07:28,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:07:28,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:07:28,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:07:28,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-07-12 12:07:28,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:07:28,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:07:28,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:07:28,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:07:28,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:07:28,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 12:07:28,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:07:28,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-12 12:07:28,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:07:28,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-07-12 12:07:28,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:07:28,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:07:28,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:07:28,093 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2022-07-12 12:07:28,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 12:07:28,093 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [303286951] [2022-07-12 12:07:28,093 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [303286951] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 12:07:28,093 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 12:07:28,093 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 12:07:28,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280042519] [2022-07-12 12:07:28,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 12:07:28,094 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 12:07:28,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 12:07:28,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 12:07:28,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-12 12:07:28,095 INFO L87 Difference]: Start difference. First operand 7205 states and 10170 transitions. Second operand has 6 states, 6 states have (on average 15.333333333333334) internal successors, (92), 3 states have internal predecessors, (92), 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) [2022-07-12 12:07:29,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 12:07:29,562 INFO L93 Difference]: Finished difference Result 16785 states and 23996 transitions. [2022-07-12 12:07:29,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-12 12:07:29,563 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.333333333333334) internal successors, (92), 3 states have internal predecessors, (92), 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 146 [2022-07-12 12:07:29,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 12:07:29,587 INFO L225 Difference]: With dead ends: 16785 [2022-07-12 12:07:29,588 INFO L226 Difference]: Without dead ends: 9583 [2022-07-12 12:07:29,602 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 [2022-07-12 12:07:29,603 INFO L413 NwaCegarLoop]: 1259 mSDtfsCounter, 1070 mSDsluCounter, 1736 mSDsCounter, 0 mSdLazyCounter, 723 mSolverCounterSat, 511 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1143 SdHoareTripleChecker+Valid, 2995 SdHoareTripleChecker+Invalid, 1234 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 511 IncrementalHoareTripleChecker+Valid, 723 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-12 12:07:29,603 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1143 Valid, 2995 Invalid, 1234 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [511 Valid, 723 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-12 12:07:29,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9583 states. [2022-07-12 12:07:30,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9583 to 8951. [2022-07-12 12:07:30,057 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) [2022-07-12 12:07:30,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8951 states to 8951 states and 12610 transitions. [2022-07-12 12:07:30,080 INFO L78 Accepts]: Start accepts. Automaton has 8951 states and 12610 transitions. Word has length 146 [2022-07-12 12:07:30,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 12:07:30,080 INFO L495 AbstractCegarLoop]: Abstraction has 8951 states and 12610 transitions. [2022-07-12 12:07:30,081 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.333333333333334) internal successors, (92), 3 states have internal predecessors, (92), 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) [2022-07-12 12:07:30,081 INFO L276 IsEmpty]: Start isEmpty. Operand 8951 states and 12610 transitions. [2022-07-12 12:07:30,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2022-07-12 12:07:30,086 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 12:07:30,086 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, 1, 1, 1, 1, 1] [2022-07-12 12:07:30,086 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-12 12:07:30,086 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 12:07:30,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 12:07:30,087 INFO L85 PathProgramCache]: Analyzing trace with hash -811262813, now seen corresponding path program 1 times [2022-07-12 12:07:30,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 12:07:30,087 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [731079590] [2022-07-12 12:07:30,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:07:30,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 12:07:30,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:07:30,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 12:07:30,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:07:30,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:07:30,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:07:30,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 12:07:30,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:07:30,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:07:30,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:07:30,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 12:07:30,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:07:30,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:07:30,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:07:30,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-07-12 12:07:30,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:07:30,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:07:30,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:07:30,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:07:30,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:07:30,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 12:07:30,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:07:30,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-12 12:07:30,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:07:30,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-07-12 12:07:30,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:07:30,462 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-07-12 12:07:30,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 12:07:30,462 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [731079590] [2022-07-12 12:07:30,462 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [731079590] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 12:07:30,462 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1365396792] [2022-07-12 12:07:30,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:07:30,463 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 12:07:30,463 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 12:07:30,464 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) [2022-07-12 12:07:30,466 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-12 12:07:31,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:07:31,992 INFO L263 TraceCheckSpWp]: Trace formula consists of 12250 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-12 12:07:32,001 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 12:07:32,147 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-12 12:07:32,148 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 12:07:32,148 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1365396792] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 12:07:32,148 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 12:07:32,148 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 8 [2022-07-12 12:07:32,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120281494] [2022-07-12 12:07:32,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 12:07:32,149 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 12:07:32,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 12:07:32,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 12:07:32,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-07-12 12:07:32,149 INFO L87 Difference]: Start difference. First operand 8951 states and 12610 transitions. Second operand has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 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) [2022-07-12 12:07:33,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 12:07:33,255 INFO L93 Difference]: Finished difference Result 26846 states and 37822 transitions. [2022-07-12 12:07:33,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-12 12:07:33,256 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 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 140 [2022-07-12 12:07:33,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 12:07:33,321 INFO L225 Difference]: With dead ends: 26846 [2022-07-12 12:07:33,322 INFO L226 Difference]: Without dead ends: 26831 [2022-07-12 12:07:33,332 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-07-12 12:07:33,333 INFO L413 NwaCegarLoop]: 1343 mSDtfsCounter, 1299 mSDsluCounter, 1416 mSDsCounter, 0 mSdLazyCounter, 174 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1299 SdHoareTripleChecker+Valid, 2759 SdHoareTripleChecker+Invalid, 189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-12 12:07:33,333 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1299 Valid, 2759 Invalid, 189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 174 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-12 12:07:33,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26831 states. [2022-07-12 12:07:34,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26831 to 26703. [2022-07-12 12:07:34,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26703 states, 21860 states have (on average 1.3944190301921318) internal successors, (30482), 22101 states have internal predecessors, (30482), 3611 states have call successors, (3611), 1321 states have call predecessors, (3611), 1231 states have return successors, (3577), 3460 states have call predecessors, (3577), 3577 states have call successors, (3577) [2022-07-12 12:07:34,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26703 states to 26703 states and 37670 transitions. [2022-07-12 12:07:34,434 INFO L78 Accepts]: Start accepts. Automaton has 26703 states and 37670 transitions. Word has length 140 [2022-07-12 12:07:34,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 12:07:34,434 INFO L495 AbstractCegarLoop]: Abstraction has 26703 states and 37670 transitions. [2022-07-12 12:07:34,434 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 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) [2022-07-12 12:07:34,434 INFO L276 IsEmpty]: Start isEmpty. Operand 26703 states and 37670 transitions. [2022-07-12 12:07:34,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-07-12 12:07:34,444 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 12:07:34,444 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 12:07:34,490 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-12 12:07:34,663 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,SelfDestructingSolverStorable13 [2022-07-12 12:07:34,663 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 12:07:34,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 12:07:34,664 INFO L85 PathProgramCache]: Analyzing trace with hash 524127038, now seen corresponding path program 1 times [2022-07-12 12:07:34,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 12:07:34,664 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [191821126] [2022-07-12 12:07:34,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:07:34,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 12:07:34,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:07:35,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 12:07:35,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:07:35,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:07:35,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:07:35,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 12:07:35,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:07:35,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:07:35,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:07:35,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 12:07:35,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:07:35,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:07:35,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:07:35,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-07-12 12:07:35,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:07:35,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:07:35,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:07:35,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:07:35,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:07:35,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 12:07:35,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:07:35,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-12 12:07:35,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:07:35,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-07-12 12:07:35,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:07:35,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:07:35,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:07:35,123 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-07-12 12:07:35,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 12:07:35,123 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [191821126] [2022-07-12 12:07:35,123 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [191821126] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 12:07:35,123 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 12:07:35,124 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 12:07:35,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505371460] [2022-07-12 12:07:35,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 12:07:35,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 12:07:35,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 12:07:35,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 12:07:35,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-12 12:07:35,125 INFO L87 Difference]: Start difference. First operand 26703 states and 37670 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) [2022-07-12 12:07:37,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 12:07:37,875 INFO L93 Difference]: Finished difference Result 60783 states and 86776 transitions. [2022-07-12 12:07:37,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-12 12:07:37,876 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 146 [2022-07-12 12:07:37,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 12:07:37,986 INFO L225 Difference]: With dead ends: 60783 [2022-07-12 12:07:37,987 INFO L226 Difference]: Without dead ends: 34083 [2022-07-12 12:07:38,186 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 [2022-07-12 12:07:38,186 INFO L413 NwaCegarLoop]: 1289 mSDtfsCounter, 717 mSDsluCounter, 2471 mSDsCounter, 0 mSdLazyCounter, 899 mSolverCounterSat, 235 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 790 SdHoareTripleChecker+Valid, 3760 SdHoareTripleChecker+Invalid, 1134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 235 IncrementalHoareTripleChecker+Valid, 899 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-07-12 12:07:38,187 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [790 Valid, 3760 Invalid, 1134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [235 Valid, 899 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-07-12 12:07:38,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34083 states. [2022-07-12 12:07:39,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34083 to 31933. [2022-07-12 12:07:39,527 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) [2022-07-12 12:07:39,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31933 states to 31933 states and 44980 transitions. [2022-07-12 12:07:39,636 INFO L78 Accepts]: Start accepts. Automaton has 31933 states and 44980 transitions. Word has length 146 [2022-07-12 12:07:39,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 12:07:39,636 INFO L495 AbstractCegarLoop]: Abstraction has 31933 states and 44980 transitions. [2022-07-12 12:07:39,637 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) [2022-07-12 12:07:39,637 INFO L276 IsEmpty]: Start isEmpty. Operand 31933 states and 44980 transitions. [2022-07-12 12:07:39,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2022-07-12 12:07:39,647 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 12:07:39,647 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 12:07:39,647 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-12 12:07:39,647 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 12:07:39,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 12:07:39,648 INFO L85 PathProgramCache]: Analyzing trace with hash -1306376265, now seen corresponding path program 1 times [2022-07-12 12:07:39,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 12:07:39,648 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [227233651] [2022-07-12 12:07:39,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:07:39,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 12:07:39,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:07:40,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 12:07:40,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:07:40,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:07:40,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:07:40,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 12:07:40,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:07:40,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:07:40,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:07:40,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 12:07:40,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:07:40,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:07:40,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:07:40,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-07-12 12:07:40,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:07:40,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:07:40,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:07:40,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:07:40,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:07:40,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 12:07:40,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:07:40,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-12 12:07:40,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:07:40,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-12 12:07:40,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:07:40,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:07:40,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:07:40,275 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2022-07-12 12:07:40,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 12:07:40,275 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [227233651] [2022-07-12 12:07:40,275 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [227233651] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 12:07:40,276 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 12:07:40,276 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 12:07:40,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854938928] [2022-07-12 12:07:40,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 12:07:40,276 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 12:07:40,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 12:07:40,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 12:07:40,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-12 12:07:40,277 INFO L87 Difference]: Start difference. First operand 31933 states and 44980 transitions. Second operand has 6 states, 6 states have (on average 15.333333333333334) internal successors, (92), 3 states have internal predecessors, (92), 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) [2022-07-12 12:07:42,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 12:07:42,924 INFO L93 Difference]: Finished difference Result 71555 states and 101924 transitions. [2022-07-12 12:07:42,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-12 12:07:42,925 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.333333333333334) internal successors, (92), 3 states have internal predecessors, (92), 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 148 [2022-07-12 12:07:42,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 12:07:43,041 INFO L225 Difference]: With dead ends: 71555 [2022-07-12 12:07:43,041 INFO L226 Difference]: Without dead ends: 39625 [2022-07-12 12:07:43,101 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 [2022-07-12 12:07:43,102 INFO L413 NwaCegarLoop]: 1276 mSDtfsCounter, 896 mSDsluCounter, 1764 mSDsCounter, 0 mSdLazyCounter, 755 mSolverCounterSat, 370 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 968 SdHoareTripleChecker+Valid, 3040 SdHoareTripleChecker+Invalid, 1125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 370 IncrementalHoareTripleChecker+Valid, 755 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-12 12:07:43,102 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [968 Valid, 3040 Invalid, 1125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [370 Valid, 755 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-12 12:07:43,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39625 states. [2022-07-12 12:07:44,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39625 to 37163. [2022-07-12 12:07:44,514 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) [2022-07-12 12:07:44,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37163 states to 37163 states and 52290 transitions. [2022-07-12 12:07:44,727 INFO L78 Accepts]: Start accepts. Automaton has 37163 states and 52290 transitions. Word has length 148 [2022-07-12 12:07:44,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 12:07:44,728 INFO L495 AbstractCegarLoop]: Abstraction has 37163 states and 52290 transitions. [2022-07-12 12:07:44,728 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.333333333333334) internal successors, (92), 3 states have internal predecessors, (92), 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) [2022-07-12 12:07:44,728 INFO L276 IsEmpty]: Start isEmpty. Operand 37163 states and 52290 transitions. [2022-07-12 12:07:44,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2022-07-12 12:07:44,737 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 12:07:44,738 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 12:07:44,738 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-12 12:07:44,738 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 12:07:44,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 12:07:44,739 INFO L85 PathProgramCache]: Analyzing trace with hash 1200677406, now seen corresponding path program 1 times [2022-07-12 12:07:44,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 12:07:44,739 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [699074620] [2022-07-12 12:07:44,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:07:44,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 12:07:44,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:07:45,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 12:07:45,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:07:45,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:07:45,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:07:45,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-12 12:07:45,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:07:45,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:07:45,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:07:45,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-07-12 12:07:45,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:07:45,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:07:45,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:07:45,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:07:45,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:07:45,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 12:07:45,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:07:45,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-12 12:07:45,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:07:45,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-07-12 12:07:45,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:07:45,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:07:45,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:07:45,184 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2022-07-12 12:07:45,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 12:07:45,185 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [699074620] [2022-07-12 12:07:45,185 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [699074620] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 12:07:45,185 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 12:07:45,185 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-12 12:07:45,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923768217] [2022-07-12 12:07:45,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 12:07:45,186 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-12 12:07:45,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 12:07:45,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-12 12:07:45,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-07-12 12:07:45,187 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) [2022-07-12 12:07:47,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 12:07:47,715 INFO L93 Difference]: Finished difference Result 76763 states and 108709 transitions. [2022-07-12 12:07:47,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-12 12:07:47,716 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 149 [2022-07-12 12:07:47,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 12:07:47,830 INFO L225 Difference]: With dead ends: 76763 [2022-07-12 12:07:47,830 INFO L226 Difference]: Without dead ends: 39603 [2022-07-12 12:07:47,893 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 [2022-07-12 12:07:47,894 INFO L413 NwaCegarLoop]: 706 mSDtfsCounter, 1163 mSDsluCounter, 1731 mSDsCounter, 0 mSdLazyCounter, 756 mSolverCounterSat, 439 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1209 SdHoareTripleChecker+Valid, 2437 SdHoareTripleChecker+Invalid, 1195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 439 IncrementalHoareTripleChecker+Valid, 756 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-12 12:07:47,894 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1209 Valid, 2437 Invalid, 1195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [439 Valid, 756 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-12 12:07:47,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39603 states. [2022-07-12 12:07:49,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39603 to 37163. [2022-07-12 12:07:49,595 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) [2022-07-12 12:07:49,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37163 states to 37163 states and 52278 transitions. [2022-07-12 12:07:49,707 INFO L78 Accepts]: Start accepts. Automaton has 37163 states and 52278 transitions. Word has length 149 [2022-07-12 12:07:49,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 12:07:49,708 INFO L495 AbstractCegarLoop]: Abstraction has 37163 states and 52278 transitions. [2022-07-12 12:07:49,708 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) [2022-07-12 12:07:49,708 INFO L276 IsEmpty]: Start isEmpty. Operand 37163 states and 52278 transitions. [2022-07-12 12:07:49,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2022-07-12 12:07:49,717 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 12:07:49,718 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 12:07:49,718 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-12 12:07:49,718 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 12:07:49,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 12:07:49,718 INFO L85 PathProgramCache]: Analyzing trace with hash -105895079, now seen corresponding path program 1 times [2022-07-12 12:07:49,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 12:07:49,719 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1644889995] [2022-07-12 12:07:49,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:07:49,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 12:07:50,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:07:50,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 12:07:50,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:07:50,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:07:50,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:07:50,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-12 12:07:50,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:07:50,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:07:50,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:07:50,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-07-12 12:07:50,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:07:50,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:07:50,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:07:50,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:07:50,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:07:50,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 12:07:50,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:07:50,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-12 12:07:50,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:07:50,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-07-12 12:07:50,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:07:50,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:07:50,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:07:50,310 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2022-07-12 12:07:50,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 12:07:50,311 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1644889995] [2022-07-12 12:07:50,311 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1644889995] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 12:07:50,311 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 12:07:50,311 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-12 12:07:50,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783278126] [2022-07-12 12:07:50,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 12:07:50,312 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-12 12:07:50,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 12:07:50,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-12 12:07:50,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-07-12 12:07:50,312 INFO L87 Difference]: Start difference. First operand 37163 states and 52278 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) [2022-07-12 12:07:52,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 12:07:52,791 INFO L93 Difference]: Finished difference Result 76763 states and 108685 transitions. [2022-07-12 12:07:52,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-12 12:07:52,792 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 150 [2022-07-12 12:07:52,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 12:07:52,923 INFO L225 Difference]: With dead ends: 76763 [2022-07-12 12:07:52,924 INFO L226 Difference]: Without dead ends: 39603 [2022-07-12 12:07:53,006 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 [2022-07-12 12:07:53,007 INFO L413 NwaCegarLoop]: 705 mSDtfsCounter, 825 mSDsluCounter, 2126 mSDsCounter, 0 mSdLazyCounter, 844 mSolverCounterSat, 227 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 871 SdHoareTripleChecker+Valid, 2831 SdHoareTripleChecker+Invalid, 1071 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 227 IncrementalHoareTripleChecker+Valid, 844 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-12 12:07:53,007 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [871 Valid, 2831 Invalid, 1071 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [227 Valid, 844 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-12 12:07:53,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39603 states. [2022-07-12 12:07:54,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39603 to 37163. [2022-07-12 12:07:54,896 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) [2022-07-12 12:07:54,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37163 states to 37163 states and 52266 transitions. [2022-07-12 12:07:55,004 INFO L78 Accepts]: Start accepts. Automaton has 37163 states and 52266 transitions. Word has length 150 [2022-07-12 12:07:55,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 12:07:55,005 INFO L495 AbstractCegarLoop]: Abstraction has 37163 states and 52266 transitions. [2022-07-12 12:07:55,005 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) [2022-07-12 12:07:55,005 INFO L276 IsEmpty]: Start isEmpty. Operand 37163 states and 52266 transitions. [2022-07-12 12:07:55,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2022-07-12 12:07:55,015 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 12:07:55,015 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 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, 1] [2022-07-12 12:07:55,015 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-12 12:07:55,016 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 12:07:55,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 12:07:55,016 INFO L85 PathProgramCache]: Analyzing trace with hash -326345977, now seen corresponding path program 1 times [2022-07-12 12:07:55,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 12:07:55,016 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551889135] [2022-07-12 12:07:55,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:07:55,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 12:07:55,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:07:55,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 12:07:55,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:07:55,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:07:55,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:07:55,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 12:07:55,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:07:55,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:07:55,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:07:55,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 12:07:55,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:07:55,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:07:55,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:07:55,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-07-12 12:07:55,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:07:55,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:07:55,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:07:55,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:07:55,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:07:55,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 12:07:55,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:07:55,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-12 12:07:55,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:07:55,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-12 12:07:55,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:07:55,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:07:55,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:07:55,425 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2022-07-12 12:07:55,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 12:07:55,425 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [551889135] [2022-07-12 12:07:55,425 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [551889135] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 12:07:55,425 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 12:07:55,425 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-12 12:07:55,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714714667] [2022-07-12 12:07:55,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 12:07:55,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-12 12:07:55,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 12:07:55,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-12 12:07:55,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-07-12 12:07:55,427 INFO L87 Difference]: Start difference. First operand 37163 states and 52266 transitions. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 4 states have internal predecessors, (94), 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) [2022-07-12 12:07:58,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 12:07:58,336 INFO L93 Difference]: Finished difference Result 76763 states and 108661 transitions. [2022-07-12 12:07:58,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-12 12:07:58,337 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 4 states have internal predecessors, (94), 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 148 [2022-07-12 12:07:58,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 12:07:58,625 INFO L225 Difference]: With dead ends: 76763 [2022-07-12 12:07:58,625 INFO L226 Difference]: Without dead ends: 39603 [2022-07-12 12:07:58,698 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 [2022-07-12 12:07:58,699 INFO L413 NwaCegarLoop]: 704 mSDtfsCounter, 1161 mSDsluCounter, 1723 mSDsCounter, 0 mSdLazyCounter, 756 mSolverCounterSat, 440 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1207 SdHoareTripleChecker+Valid, 2427 SdHoareTripleChecker+Invalid, 1196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 440 IncrementalHoareTripleChecker+Valid, 756 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-12 12:07:58,699 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1207 Valid, 2427 Invalid, 1196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [440 Valid, 756 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-12 12:07:58,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39603 states. [2022-07-12 12:08:00,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39603 to 37163. [2022-07-12 12:08:00,347 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) [2022-07-12 12:08:00,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37163 states to 37163 states and 52254 transitions. [2022-07-12 12:08:00,473 INFO L78 Accepts]: Start accepts. Automaton has 37163 states and 52254 transitions. Word has length 148 [2022-07-12 12:08:00,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 12:08:00,473 INFO L495 AbstractCegarLoop]: Abstraction has 37163 states and 52254 transitions. [2022-07-12 12:08:00,473 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 4 states have internal predecessors, (94), 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) [2022-07-12 12:08:00,473 INFO L276 IsEmpty]: Start isEmpty. Operand 37163 states and 52254 transitions. [2022-07-12 12:08:00,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2022-07-12 12:08:00,482 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 12:08:00,483 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] [2022-07-12 12:08:00,483 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-12 12:08:00,483 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 12:08:00,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 12:08:00,483 INFO L85 PathProgramCache]: Analyzing trace with hash 929454426, now seen corresponding path program 1 times [2022-07-12 12:08:00,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 12:08:00,483 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [582022092] [2022-07-12 12:08:00,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:08:00,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 12:08:00,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:08:00,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 12:08:00,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:08:00,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:08:00,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:08:00,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 12:08:00,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:08:00,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:08:00,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:08:00,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 12:08:00,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:08:00,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:08:00,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:08:00,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-12 12:08:00,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:08:00,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-12 12:08:00,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:08:00,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-12 12:08:00,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:08:00,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-07-12 12:08:00,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:08:00,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:08:00,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:08:00,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 12:08:00,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:08:00,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:08:00,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:08:00,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-07-12 12:08:00,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:08:00,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:08:00,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:08:00,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-12 12:08:00,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:08:00,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-07-12 12:08:00,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:08:00,980 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2022-07-12 12:08:00,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 12:08:00,981 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [582022092] [2022-07-12 12:08:00,981 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [582022092] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 12:08:00,981 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 12:08:00,981 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 12:08:00,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179322813] [2022-07-12 12:08:00,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 12:08:00,982 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 12:08:00,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 12:08:00,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 12:08:00,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-12 12:08:00,983 INFO L87 Difference]: Start difference. First operand 37163 states and 52254 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, (18), 5 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-07-12 12:08:04,158 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 [] [2022-07-12 12:08:05,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 12:08:05,651 INFO L93 Difference]: Finished difference Result 62438 states and 87847 transitions. [2022-07-12 12:08:05,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-12 12:08:05,652 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, (18), 5 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 151 [2022-07-12 12:08:05,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 12:08:05,726 INFO L225 Difference]: With dead ends: 62438 [2022-07-12 12:08:05,726 INFO L226 Difference]: Without dead ends: 25236 [2022-07-12 12:08:05,791 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-07-12 12:08:05,793 INFO L413 NwaCegarLoop]: 680 mSDtfsCounter, 636 mSDsluCounter, 1562 mSDsCounter, 0 mSdLazyCounter, 659 mSolverCounterSat, 393 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 653 SdHoareTripleChecker+Valid, 2242 SdHoareTripleChecker+Invalid, 1053 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 393 IncrementalHoareTripleChecker+Valid, 659 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-07-12 12:08:05,793 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [653 Valid, 2242 Invalid, 1053 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [393 Valid, 659 Invalid, 1 Unknown, 0 Unchecked, 3.2s Time] [2022-07-12 12:08:05,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25236 states. [2022-07-12 12:08:06,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25236 to 16417. [2022-07-12 12:08:06,533 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) [2022-07-12 12:08:06,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16417 states to 16417 states and 23301 transitions. [2022-07-12 12:08:06,571 INFO L78 Accepts]: Start accepts. Automaton has 16417 states and 23301 transitions. Word has length 151 [2022-07-12 12:08:06,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 12:08:06,571 INFO L495 AbstractCegarLoop]: Abstraction has 16417 states and 23301 transitions. [2022-07-12 12:08:06,571 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, (18), 5 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-07-12 12:08:06,571 INFO L276 IsEmpty]: Start isEmpty. Operand 16417 states and 23301 transitions. [2022-07-12 12:08:06,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2022-07-12 12:08:06,576 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 12:08:06,576 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] [2022-07-12 12:08:06,576 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-12 12:08:06,577 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 12:08:06,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 12:08:06,577 INFO L85 PathProgramCache]: Analyzing trace with hash -1424930856, now seen corresponding path program 1 times [2022-07-12 12:08:06,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 12:08:06,577 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [998793535] [2022-07-12 12:08:06,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:08:06,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 12:08:06,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:08:06,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 12:08:06,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:08:06,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:08:06,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:08:06,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 12:08:06,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:08:06,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:08:06,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:08:06,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 12:08:06,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:08:06,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:08:06,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:08:06,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-12 12:08:06,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:08:06,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-12 12:08:06,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:08:06,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-12 12:08:06,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:08:06,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-07-12 12:08:06,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:08:06,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:08:06,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:08:06,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 12:08:06,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:08:06,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:08:06,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:08:06,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-07-12 12:08:06,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:08:06,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:08:06,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:08:06,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-12 12:08:06,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:08:06,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-07-12 12:08:06,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:08:07,000 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2022-07-12 12:08:07,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 12:08:07,000 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [998793535] [2022-07-12 12:08:07,001 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [998793535] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 12:08:07,001 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 12:08:07,001 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 12:08:07,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496128854] [2022-07-12 12:08:07,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 12:08:07,003 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 12:08:07,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 12:08:07,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 12:08:07,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-12 12:08:07,004 INFO L87 Difference]: Start difference. First operand 16417 states and 23301 transitions. Second operand has 6 states, 6 states have (on average 15.0) internal successors, (90), 3 states have internal predecessors, (90), 2 states have call successors, (18), 5 states have call predecessors, (18), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2022-07-12 12:08:09,763 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 [] [2022-07-12 12:08:10,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 12:08:10,922 INFO L93 Difference]: Finished difference Result 34860 states and 50112 transitions. [2022-07-12 12:08:10,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-12 12:08:10,923 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), 2 states have call successors, (18), 5 states have call predecessors, (18), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) Word has length 151 [2022-07-12 12:08:10,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 12:08:10,992 INFO L225 Difference]: With dead ends: 34860 [2022-07-12 12:08:10,993 INFO L226 Difference]: Without dead ends: 18461 [2022-07-12 12:08:11,025 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2022-07-12 12:08:11,026 INFO L413 NwaCegarLoop]: 681 mSDtfsCounter, 626 mSDsluCounter, 1567 mSDsCounter, 0 mSdLazyCounter, 653 mSolverCounterSat, 385 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 643 SdHoareTripleChecker+Valid, 2248 SdHoareTripleChecker+Invalid, 1039 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 385 IncrementalHoareTripleChecker+Valid, 653 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-07-12 12:08:11,026 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [643 Valid, 2248 Invalid, 1039 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [385 Valid, 653 Invalid, 1 Unknown, 0 Unchecked, 3.0s Time] [2022-07-12 12:08:11,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18461 states. [2022-07-12 12:08:11,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18461 to 16438. [2022-07-12 12:08:11,790 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) [2022-07-12 12:08:11,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16438 states to 16438 states and 23322 transitions. [2022-07-12 12:08:11,832 INFO L78 Accepts]: Start accepts. Automaton has 16438 states and 23322 transitions. Word has length 151 [2022-07-12 12:08:11,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 12:08:11,833 INFO L495 AbstractCegarLoop]: Abstraction has 16438 states and 23322 transitions. [2022-07-12 12:08:11,833 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), 2 states have call successors, (18), 5 states have call predecessors, (18), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2022-07-12 12:08:11,833 INFO L276 IsEmpty]: Start isEmpty. Operand 16438 states and 23322 transitions. [2022-07-12 12:08:11,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2022-07-12 12:08:11,838 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 12:08:11,838 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] [2022-07-12 12:08:11,838 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-07-12 12:08:11,838 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 12:08:11,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 12:08:11,838 INFO L85 PathProgramCache]: Analyzing trace with hash 2060689814, now seen corresponding path program 1 times [2022-07-12 12:08:11,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 12:08:11,839 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [304444403] [2022-07-12 12:08:11,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:08:11,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 12:08:12,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:08:12,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 12:08:12,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:08:12,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:08:12,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:08:12,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 12:08:12,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:08:12,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:08:12,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:08:12,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 12:08:12,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:08:12,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:08:12,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:08:12,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-12 12:08:12,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:08:12,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-12 12:08:12,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:08:12,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-12 12:08:12,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:08:12,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-07-12 12:08:12,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:08:12,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:08:12,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:08:12,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 12:08:12,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:08:12,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:08:12,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:08:12,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-07-12 12:08:12,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:08:12,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:08:12,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:08:12,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-12 12:08:12,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:08:12,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-07-12 12:08:12,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:08:12,270 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2022-07-12 12:08:12,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 12:08:12,271 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [304444403] [2022-07-12 12:08:12,271 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [304444403] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 12:08:12,271 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 12:08:12,271 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 12:08:12,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589128108] [2022-07-12 12:08:12,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 12:08:12,272 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 12:08:12,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 12:08:12,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 12:08:12,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-12 12:08:12,273 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) [2022-07-12 12:08:15,716 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 12:08:17,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 12:08:17,338 INFO L93 Difference]: Finished difference Result 34883 states and 49969 transitions. [2022-07-12 12:08:17,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-12 12:08:17,342 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 [2022-07-12 12:08:17,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 12:08:17,548 INFO L225 Difference]: With dead ends: 34883 [2022-07-12 12:08:17,549 INFO L226 Difference]: Without dead ends: 18463 [2022-07-12 12:08:17,586 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 [2022-07-12 12:08:17,587 INFO L413 NwaCegarLoop]: 1079 mSDtfsCounter, 1174 mSDsluCounter, 2113 mSDsCounter, 0 mSdLazyCounter, 772 mSolverCounterSat, 629 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s 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, 3.9s IncrementalHoareTripleChecker+Time [2022-07-12 12:08:17,587 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1211 Valid, 3192 Invalid, 1402 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [629 Valid, 772 Invalid, 1 Unknown, 0 Unchecked, 3.9s Time] [2022-07-12 12:08:17,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18463 states. [2022-07-12 12:08:18,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18463 to 16292. [2022-07-12 12:08:18,432 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) [2022-07-12 12:08:18,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16292 states to 16292 states and 23060 transitions. [2022-07-12 12:08:18,488 INFO L78 Accepts]: Start accepts. Automaton has 16292 states and 23060 transitions. Word has length 151 [2022-07-12 12:08:18,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 12:08:18,488 INFO L495 AbstractCegarLoop]: Abstraction has 16292 states and 23060 transitions. [2022-07-12 12:08:18,489 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) [2022-07-12 12:08:18,489 INFO L276 IsEmpty]: Start isEmpty. Operand 16292 states and 23060 transitions. [2022-07-12 12:08:18,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2022-07-12 12:08:18,496 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 12:08:18,496 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, 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] [2022-07-12 12:08:18,496 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-07-12 12:08:18,496 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 12:08:18,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 12:08:18,497 INFO L85 PathProgramCache]: Analyzing trace with hash -726688080, now seen corresponding path program 1 times [2022-07-12 12:08:18,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 12:08:18,497 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1181895428] [2022-07-12 12:08:18,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:08:18,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 12:08:18,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:08:19,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 12:08:19,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:08:19,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:08:19,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:08:19,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-12 12:08:19,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:08:19,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:08:19,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:08:19,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-07-12 12:08:19,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:08:19,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:08:19,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:08:19,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:08:19,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:08:19,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 12:08:19,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:08:19,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-12 12:08:19,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:08:19,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-07-12 12:08:19,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:08:19,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:08:19,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:08:19,101 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-07-12 12:08:19,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 12:08:19,102 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1181895428] [2022-07-12 12:08:19,102 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1181895428] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 12:08:19,102 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 12:08:19,102 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 12:08:19,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037581213] [2022-07-12 12:08:19,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 12:08:19,103 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 12:08:19,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 12:08:19,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 12:08:19,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-12 12:08:19,104 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) [2022-07-12 12:08:20,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 12:08:20,652 INFO L93 Difference]: Finished difference Result 32630 states and 46503 transitions. [2022-07-12 12:08:20,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-12 12:08:20,652 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 153 [2022-07-12 12:08:20,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 12:08:20,704 INFO L225 Difference]: With dead ends: 32630 [2022-07-12 12:08:20,705 INFO L226 Difference]: Without dead ends: 15272 [2022-07-12 12:08:20,748 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 [2022-07-12 12:08:20,752 INFO L413 NwaCegarLoop]: 738 mSDtfsCounter, 1041 mSDsluCounter, 913 mSDsCounter, 0 mSdLazyCounter, 235 mSolverCounterSat, 438 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1077 SdHoareTripleChecker+Valid, 1651 SdHoareTripleChecker+Invalid, 673 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 438 IncrementalHoareTripleChecker+Valid, 235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-12 12:08:20,753 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1077 Valid, 1651 Invalid, 673 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [438 Valid, 235 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-12 12:08:20,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15272 states. [2022-07-12 12:08:21,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15272 to 14228. [2022-07-12 12:08:21,378 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) [2022-07-12 12:08:21,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14228 states to 14228 states and 20126 transitions. [2022-07-12 12:08:21,414 INFO L78 Accepts]: Start accepts. Automaton has 14228 states and 20126 transitions. Word has length 153 [2022-07-12 12:08:21,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 12:08:21,415 INFO L495 AbstractCegarLoop]: Abstraction has 14228 states and 20126 transitions. [2022-07-12 12:08:21,415 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) [2022-07-12 12:08:21,415 INFO L276 IsEmpty]: Start isEmpty. Operand 14228 states and 20126 transitions. [2022-07-12 12:08:21,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2022-07-12 12:08:21,422 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 12:08:21,422 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-07-12 12:08:21,422 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-07-12 12:08:21,422 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 12:08:21,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 12:08:21,422 INFO L85 PathProgramCache]: Analyzing trace with hash -1626513859, now seen corresponding path program 1 times [2022-07-12 12:08:21,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 12:08:21,423 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1264697948] [2022-07-12 12:08:21,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:08:21,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 12:08:21,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:08:21,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 12:08:21,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:08:21,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:08:21,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:08:21,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-12 12:08:21,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:08:21,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:08:21,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:08:21,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-07-12 12:08:21,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:08:21,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:08:21,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:08:21,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:08:21,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:08:21,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 12:08:21,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:08:21,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-12 12:08:21,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:08:21,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2022-07-12 12:08:21,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:08:21,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:08:21,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:08:21,889 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2022-07-12 12:08:21,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 12:08:21,889 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1264697948] [2022-07-12 12:08:21,889 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1264697948] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 12:08:21,890 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 12:08:21,890 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 12:08:21,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42152768] [2022-07-12 12:08:21,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 12:08:21,890 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 12:08:21,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 12:08:21,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 12:08:21,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-12 12:08:21,899 INFO L87 Difference]: Start difference. First operand 14228 states and 20126 transitions. Second operand has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 3 states have internal predecessors, (103), 2 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-07-12 12:08:23,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 12:08:23,731 INFO L93 Difference]: Finished difference Result 31516 states and 45011 transitions. [2022-07-12 12:08:23,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-12 12:08:23,732 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 3 states have internal predecessors, (103), 2 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 165 [2022-07-12 12:08:23,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 12:08:23,792 INFO L225 Difference]: With dead ends: 31516 [2022-07-12 12:08:23,793 INFO L226 Difference]: Without dead ends: 17425 [2022-07-12 12:08:23,825 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-07-12 12:08:23,826 INFO L413 NwaCegarLoop]: 1187 mSDtfsCounter, 960 mSDsluCounter, 1603 mSDsCounter, 0 mSdLazyCounter, 702 mSolverCounterSat, 495 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1024 SdHoareTripleChecker+Valid, 2790 SdHoareTripleChecker+Invalid, 1197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 495 IncrementalHoareTripleChecker+Valid, 702 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-12 12:08:23,826 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1024 Valid, 2790 Invalid, 1197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [495 Valid, 702 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-12 12:08:23,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17425 states. [2022-07-12 12:08:24,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17425 to 16360. [2022-07-12 12:08:24,587 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) [2022-07-12 12:08:24,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16360 states to 16360 states and 23126 transitions. [2022-07-12 12:08:24,638 INFO L78 Accepts]: Start accepts. Automaton has 16360 states and 23126 transitions. Word has length 165 [2022-07-12 12:08:24,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 12:08:24,638 INFO L495 AbstractCegarLoop]: Abstraction has 16360 states and 23126 transitions. [2022-07-12 12:08:24,638 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 3 states have internal predecessors, (103), 2 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-07-12 12:08:24,639 INFO L276 IsEmpty]: Start isEmpty. Operand 16360 states and 23126 transitions. [2022-07-12 12:08:24,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2022-07-12 12:08:24,647 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 12:08:24,647 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] [2022-07-12 12:08:24,647 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-07-12 12:08:24,647 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 12:08:24,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 12:08:24,647 INFO L85 PathProgramCache]: Analyzing trace with hash -2030378358, now seen corresponding path program 1 times [2022-07-12 12:08:24,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 12:08:24,648 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2131060914] [2022-07-12 12:08:24,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:08:24,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 12:08:24,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:08:25,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 12:08:25,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:08:25,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:08:25,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:08:25,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 12:08:25,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:08:25,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:08:25,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:08:25,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 12:08:25,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:08:25,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:08:25,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:08:25,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-07-12 12:08:25,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:08:25,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:08:25,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:08:25,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:08:25,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:08:25,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 12:08:25,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:08:25,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-12 12:08:25,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:08:25,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2022-07-12 12:08:25,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:08:25,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:08:25,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:08:25,168 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2022-07-12 12:08:25,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 12:08:25,168 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2131060914] [2022-07-12 12:08:25,168 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2131060914] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 12:08:25,168 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 12:08:25,168 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 12:08:25,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241750836] [2022-07-12 12:08:25,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 12:08:25,168 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 12:08:25,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 12:08:25,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 12:08:25,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-12 12:08:25,183 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) [2022-07-12 12:08:27,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 12:08:27,518 INFO L93 Difference]: Finished difference Result 35909 states and 51218 transitions. [2022-07-12 12:08:27,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-12 12:08:27,519 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 [2022-07-12 12:08:27,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 12:08:27,581 INFO L225 Difference]: With dead ends: 35909 [2022-07-12 12:08:27,581 INFO L226 Difference]: Without dead ends: 19686 [2022-07-12 12:08:27,613 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 [2022-07-12 12:08:27,614 INFO L413 NwaCegarLoop]: 1187 mSDtfsCounter, 623 mSDsluCounter, 2223 mSDsCounter, 0 mSdLazyCounter, 861 mSolverCounterSat, 228 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 687 SdHoareTripleChecker+Valid, 3410 SdHoareTripleChecker+Invalid, 1089 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 228 IncrementalHoareTripleChecker+Valid, 861 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-07-12 12:08:27,614 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [687 Valid, 3410 Invalid, 1089 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [228 Valid, 861 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-07-12 12:08:27,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19686 states. [2022-07-12 12:08:28,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19686 to 18492. [2022-07-12 12:08:28,321 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) [2022-07-12 12:08:28,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18492 states to 18492 states and 26126 transitions. [2022-07-12 12:08:28,374 INFO L78 Accepts]: Start accepts. Automaton has 18492 states and 26126 transitions. Word has length 170 [2022-07-12 12:08:28,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 12:08:28,375 INFO L495 AbstractCegarLoop]: Abstraction has 18492 states and 26126 transitions. [2022-07-12 12:08:28,375 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) [2022-07-12 12:08:28,375 INFO L276 IsEmpty]: Start isEmpty. Operand 18492 states and 26126 transitions. [2022-07-12 12:08:28,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2022-07-12 12:08:28,381 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 12:08:28,382 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 12:08:28,382 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-07-12 12:08:28,382 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 12:08:28,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 12:08:28,382 INFO L85 PathProgramCache]: Analyzing trace with hash 34771386, now seen corresponding path program 1 times [2022-07-12 12:08:28,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 12:08:28,382 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1357466647] [2022-07-12 12:08:28,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:08:28,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 12:08:28,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:08:28,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 12:08:28,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:08:28,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:08:28,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:08:28,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-12 12:08:28,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:08:28,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:08:28,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:08:28,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-07-12 12:08:28,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:08:28,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:08:28,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:08:28,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:08:28,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:08:28,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 12:08:28,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:08:28,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-12 12:08:28,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:08:28,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-07-12 12:08:28,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:08:28,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:08:28,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:08:28,899 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2022-07-12 12:08:28,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 12:08:28,900 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1357466647] [2022-07-12 12:08:28,900 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1357466647] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 12:08:28,900 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 12:08:28,900 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 12:08:28,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502042924] [2022-07-12 12:08:28,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 12:08:28,901 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 12:08:28,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 12:08:28,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 12:08:28,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-12 12:08:28,902 INFO L87 Difference]: Start difference. First operand 18492 states and 26126 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, (12), 5 states have call predecessors, (12), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-07-12 12:08:31,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 12:08:31,104 INFO L93 Difference]: Finished difference Result 40302 states and 57425 transitions. [2022-07-12 12:08:31,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-12 12:08:31,104 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, (12), 5 states have call predecessors, (12), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 169 [2022-07-12 12:08:31,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 12:08:31,186 INFO L225 Difference]: With dead ends: 40302 [2022-07-12 12:08:31,186 INFO L226 Difference]: Without dead ends: 21947 [2022-07-12 12:08:31,232 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 [2022-07-12 12:08:31,232 INFO L413 NwaCegarLoop]: 1186 mSDtfsCounter, 793 mSDsluCounter, 1607 mSDsCounter, 0 mSdLazyCounter, 724 mSolverCounterSat, 362 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 857 SdHoareTripleChecker+Valid, 2793 SdHoareTripleChecker+Invalid, 1086 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 362 IncrementalHoareTripleChecker+Valid, 724 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-07-12 12:08:31,232 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [857 Valid, 2793 Invalid, 1086 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [362 Valid, 724 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-07-12 12:08:31,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21947 states. [2022-07-12 12:08:32,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21947 to 20624. [2022-07-12 12:08:32,050 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) [2022-07-12 12:08:32,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20624 states to 20624 states and 29126 transitions. [2022-07-12 12:08:32,115 INFO L78 Accepts]: Start accepts. Automaton has 20624 states and 29126 transitions. Word has length 169 [2022-07-12 12:08:32,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 12:08:32,115 INFO L495 AbstractCegarLoop]: Abstraction has 20624 states and 29126 transitions. [2022-07-12 12:08:32,116 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, (12), 5 states have call predecessors, (12), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-07-12 12:08:32,116 INFO L276 IsEmpty]: Start isEmpty. Operand 20624 states and 29126 transitions. [2022-07-12 12:08:32,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2022-07-12 12:08:32,123 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 12:08:32,123 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-07-12 12:08:32,123 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-07-12 12:08:32,124 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 12:08:32,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 12:08:32,124 INFO L85 PathProgramCache]: Analyzing trace with hash -1701620991, now seen corresponding path program 1 times [2022-07-12 12:08:32,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 12:08:32,124 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [165505102] [2022-07-12 12:08:32,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:08:32,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 12:08:32,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:08:32,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 12:08:32,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:08:32,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:08:32,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:08:32,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 12:08:32,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:08:32,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:08:32,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:08:32,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 12:08:32,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:08:32,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:08:32,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:08:32,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-12 12:08:32,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:08:32,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:08:32,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:08:32,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-12 12:08:32,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:08:32,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-07-12 12:08:32,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:08:32,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:08:32,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:08:32,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:08:32,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:08:32,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 12:08:32,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:08:32,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-12 12:08:32,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:08:32,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-07-12 12:08:32,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:08:32,668 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-07-12 12:08:32,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 12:08:32,668 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [165505102] [2022-07-12 12:08:32,668 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [165505102] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 12:08:32,668 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 12:08:32,668 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 12:08:32,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307546213] [2022-07-12 12:08:32,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 12:08:32,669 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 12:08:32,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 12:08:32,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 12:08:32,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-12 12:08:32,669 INFO L87 Difference]: Start difference. First operand 20624 states and 29126 transitions. Second operand has 6 states, 6 states have (on average 19.166666666666668) internal successors, (115), 3 states have internal predecessors, (115), 2 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-12 12:08:34,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 12:08:34,539 INFO L93 Difference]: Finished difference Result 45039 states and 63547 transitions. [2022-07-12 12:08:34,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-12 12:08:34,540 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 19.166666666666668) internal successors, (115), 3 states have internal predecessors, (115), 2 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 172 [2022-07-12 12:08:34,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 12:08:34,620 INFO L225 Difference]: With dead ends: 45039 [2022-07-12 12:08:34,620 INFO L226 Difference]: Without dead ends: 24552 [2022-07-12 12:08:34,670 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-07-12 12:08:34,670 INFO L413 NwaCegarLoop]: 807 mSDtfsCounter, 1097 mSDsluCounter, 1204 mSDsCounter, 0 mSdLazyCounter, 317 mSolverCounterSat, 506 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1135 SdHoareTripleChecker+Valid, 2011 SdHoareTripleChecker+Invalid, 823 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 506 IncrementalHoareTripleChecker+Valid, 317 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-12 12:08:34,671 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1135 Valid, 2011 Invalid, 823 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [506 Valid, 317 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-12 12:08:34,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24552 states. [2022-07-12 12:08:35,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24552 to 22951. [2022-07-12 12:08:35,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22951 states, 19066 states have (on average 1.3963075632015105) internal successors, (26622), 19303 states have internal predecessors, (26622), 2764 states have call successors, (2764), 1165 states have call predecessors, (2764), 1120 states have return successors, (2692), 2653 states have call predecessors, (2692), 2692 states have call successors, (2692) [2022-07-12 12:08:35,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22951 states to 22951 states and 32078 transitions. [2022-07-12 12:08:35,759 INFO L78 Accepts]: Start accepts. Automaton has 22951 states and 32078 transitions. Word has length 172 [2022-07-12 12:08:35,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 12:08:35,760 INFO L495 AbstractCegarLoop]: Abstraction has 22951 states and 32078 transitions. [2022-07-12 12:08:35,760 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.166666666666668) internal successors, (115), 3 states have internal predecessors, (115), 2 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-12 12:08:35,760 INFO L276 IsEmpty]: Start isEmpty. Operand 22951 states and 32078 transitions. [2022-07-12 12:08:35,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2022-07-12 12:08:35,765 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 12:08:35,766 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, 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] [2022-07-12 12:08:35,766 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-07-12 12:08:35,766 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 12:08:35,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 12:08:35,767 INFO L85 PathProgramCache]: Analyzing trace with hash 1444857659, now seen corresponding path program 1 times [2022-07-12 12:08:35,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 12:08:35,767 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [733069396] [2022-07-12 12:08:35,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:08:35,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 12:08:35,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:08:36,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 12:08:36,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:08:36,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:08:36,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:08:36,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 12:08:36,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:08:36,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:08:36,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:08:36,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 12:08:36,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:08:36,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:08:36,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:08:36,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-12 12:08:36,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:08:36,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:08:36,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:08:36,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:08:36,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:08:36,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 12:08:36,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:08:36,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-12 12:08:36,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:08:36,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2022-07-12 12:08:36,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:08:36,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:08:36,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:08:36,200 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2022-07-12 12:08:36,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 12:08:36,200 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [733069396] [2022-07-12 12:08:36,200 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [733069396] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 12:08:36,200 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 12:08:36,200 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 12:08:36,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700089546] [2022-07-12 12:08:36,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 12:08:36,201 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 12:08:36,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 12:08:36,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 12:08:36,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-12 12:08:36,202 INFO L87 Difference]: Start difference. First operand 22951 states and 32078 transitions. Second operand has 6 states, 6 states have (on average 15.333333333333334) internal successors, (92), 3 states have internal predecessors, (92), 3 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11)