./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--hwmon--abituguru3.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version eb692b52 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-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--hwmon--abituguru3.ko-entry_point.cil.out.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 32c3d0de0693c88d7932ff8b6e02d1235a8aa90cfbd4ebc203b8adf917998be1 --- Real Ultimate output --- This is Ultimate 0.2.2-?-eb692b5 [2022-07-20 00:37:15,373 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-20 00:37:15,375 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-20 00:37:15,409 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-20 00:37:15,412 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-20 00:37:15,413 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-20 00:37:15,418 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-20 00:37:15,423 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-20 00:37:15,425 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-20 00:37:15,430 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-20 00:37:15,431 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-20 00:37:15,433 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-20 00:37:15,433 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-20 00:37:15,435 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-20 00:37:15,437 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-20 00:37:15,439 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-20 00:37:15,440 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-20 00:37:15,441 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-20 00:37:15,445 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-20 00:37:15,446 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-20 00:37:15,450 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-20 00:37:15,452 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-20 00:37:15,452 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-20 00:37:15,453 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-20 00:37:15,455 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-20 00:37:15,459 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-20 00:37:15,460 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-20 00:37:15,460 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-20 00:37:15,461 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-20 00:37:15,461 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-20 00:37:15,462 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-20 00:37:15,463 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-20 00:37:15,464 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-20 00:37:15,465 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-20 00:37:15,465 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-20 00:37:15,466 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-20 00:37:15,466 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-20 00:37:15,467 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-20 00:37:15,467 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-20 00:37:15,467 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-20 00:37:15,468 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-20 00:37:15,469 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-20 00:37:15,470 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-07-20 00:37:15,504 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-20 00:37:15,505 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-20 00:37:15,505 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-20 00:37:15,505 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-20 00:37:15,506 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-20 00:37:15,506 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-20 00:37:15,506 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-20 00:37:15,507 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-20 00:37:15,507 INFO L138 SettingsManager]: * Use SBE=true [2022-07-20 00:37:15,508 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-20 00:37:15,508 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-20 00:37:15,508 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-20 00:37:15,508 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-20 00:37:15,508 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-20 00:37:15,508 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-20 00:37:15,509 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-20 00:37:15,509 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-20 00:37:15,509 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-20 00:37:15,509 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-20 00:37:15,509 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-20 00:37:15,510 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-20 00:37:15,510 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-20 00:37:15,510 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-20 00:37:15,510 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-20 00:37:15,510 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-20 00:37:15,511 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-20 00:37:15,511 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-20 00:37:15,511 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-20 00:37:15,511 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-20 00:37:15,511 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-20 00:37:15,512 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 32c3d0de0693c88d7932ff8b6e02d1235a8aa90cfbd4ebc203b8adf917998be1 [2022-07-20 00:37:15,713 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-20 00:37:15,738 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-20 00:37:15,740 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-20 00:37:15,741 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-20 00:37:15,742 INFO L275 PluginConnector]: CDTParser initialized [2022-07-20 00:37:15,742 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--hwmon--abituguru3.ko-entry_point.cil.out.i [2022-07-20 00:37:15,798 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/42f30b4df/983b969d63ea4a06aecd603b227a36ad/FLAGdadbbf25c [2022-07-20 00:37:16,424 INFO L306 CDTParser]: Found 1 translation units. [2022-07-20 00:37:16,425 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--hwmon--abituguru3.ko-entry_point.cil.out.i [2022-07-20 00:37:16,456 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/42f30b4df/983b969d63ea4a06aecd603b227a36ad/FLAGdadbbf25c [2022-07-20 00:37:16,774 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/42f30b4df/983b969d63ea4a06aecd603b227a36ad [2022-07-20 00:37:16,776 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-20 00:37:16,777 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-20 00:37:16,778 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-20 00:37:16,778 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-20 00:37:16,781 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-20 00:37:16,782 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 12:37:16" (1/1) ... [2022-07-20 00:37:16,782 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a05316 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 12:37:16, skipping insertion in model container [2022-07-20 00:37:16,783 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 12:37:16" (1/1) ... [2022-07-20 00:37:16,788 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-20 00:37:16,847 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-20 00:37:17,603 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-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--hwmon--abituguru3.ko-entry_point.cil.out.i[192198,192211] [2022-07-20 00:37:17,658 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-20 00:37:17,720 INFO L203 MainTranslator]: Completed pre-run [2022-07-20 00:37:17,942 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-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--hwmon--abituguru3.ko-entry_point.cil.out.i[192198,192211] [2022-07-20 00:37:17,970 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-20 00:37:18,142 INFO L208 MainTranslator]: Completed translation [2022-07-20 00:37:18,144 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 12:37:18 WrapperNode [2022-07-20 00:37:18,144 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-20 00:37:18,145 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-20 00:37:18,145 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-20 00:37:18,146 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-20 00:37:18,151 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 12:37:18" (1/1) ... [2022-07-20 00:37:18,261 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 12:37:18" (1/1) ... [2022-07-20 00:37:18,542 INFO L137 Inliner]: procedures = 165, calls = 5249, calls flagged for inlining = 57, calls inlined = 52, statements flattened = 6390 [2022-07-20 00:37:18,543 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-20 00:37:18,544 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-20 00:37:18,544 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-20 00:37:18,545 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-20 00:37:18,551 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 12:37:18" (1/1) ... [2022-07-20 00:37:18,552 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 12:37:18" (1/1) ... [2022-07-20 00:37:18,620 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 12:37:18" (1/1) ... [2022-07-20 00:37:18,621 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 12:37:18" (1/1) ... [2022-07-20 00:37:18,779 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 12:37:18" (1/1) ... [2022-07-20 00:37:18,790 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 12:37:18" (1/1) ... [2022-07-20 00:37:18,807 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 12:37:18" (1/1) ... [2022-07-20 00:37:18,828 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-20 00:37:18,829 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-20 00:37:18,829 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-20 00:37:18,829 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-20 00:37:18,830 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 12:37:18" (1/1) ... [2022-07-20 00:37:18,836 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-20 00:37:18,844 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-20 00:37:18,856 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) [2022-07-20 00:37:18,893 INFO L130 BoogieDeclarations]: Found specification of procedure abituguru3_wait_while_busy [2022-07-20 00:37:18,894 INFO L138 BoogieDeclarations]: Found implementation of procedure abituguru3_wait_while_busy [2022-07-20 00:37:18,894 INFO L130 BoogieDeclarations]: Found specification of procedure dev_get_drvdata [2022-07-20 00:37:18,895 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_get_drvdata [2022-07-20 00:37:18,895 INFO L130 BoogieDeclarations]: Found specification of procedure abituguru3_wait_for_read [2022-07-20 00:37:18,895 INFO L138 BoogieDeclarations]: Found implementation of procedure abituguru3_wait_for_read [2022-07-20 00:37:18,895 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2022-07-20 00:37:18,895 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2022-07-20 00:37:18,895 INFO L130 BoogieDeclarations]: Found specification of procedure platform_driver_unregister [2022-07-20 00:37:18,896 INFO L138 BoogieDeclarations]: Found implementation of procedure platform_driver_unregister [2022-07-20 00:37:18,896 INFO L130 BoogieDeclarations]: Found specification of procedure abituguru3_remove [2022-07-20 00:37:18,896 INFO L138 BoogieDeclarations]: Found implementation of procedure abituguru3_remove [2022-07-20 00:37:18,896 INFO L130 BoogieDeclarations]: Found specification of procedure dmi_get_system_info [2022-07-20 00:37:18,896 INFO L138 BoogieDeclarations]: Found implementation of procedure dmi_get_system_info [2022-07-20 00:37:18,896 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-07-20 00:37:18,897 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-07-20 00:37:18,897 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-20 00:37:18,897 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-07-20 00:37:18,897 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-07-20 00:37:18,897 INFO L130 BoogieDeclarations]: Found specification of procedure abituguru3_read [2022-07-20 00:37:18,897 INFO L138 BoogieDeclarations]: Found implementation of procedure abituguru3_read [2022-07-20 00:37:18,898 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-07-20 00:37:18,898 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-07-20 00:37:18,898 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-20 00:37:18,898 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-07-20 00:37:18,898 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-07-20 00:37:18,898 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-07-20 00:37:18,898 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-07-20 00:37:18,899 INFO L130 BoogieDeclarations]: Found specification of procedure abituguru3_probe [2022-07-20 00:37:18,899 INFO L138 BoogieDeclarations]: Found implementation of procedure abituguru3_probe [2022-07-20 00:37:18,899 INFO L130 BoogieDeclarations]: Found specification of procedure device_create_file [2022-07-20 00:37:18,899 INFO L138 BoogieDeclarations]: Found implementation of procedure device_create_file [2022-07-20 00:37:18,899 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_update_lock_of_abituguru3_data [2022-07-20 00:37:18,899 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_update_lock_of_abituguru3_data [2022-07-20 00:37:18,900 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-07-20 00:37:18,900 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-07-20 00:37:18,900 INFO L130 BoogieDeclarations]: Found specification of procedure abituguru3_suspend [2022-07-20 00:37:18,880 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 [2022-07-20 00:37:18,901 INFO L138 BoogieDeclarations]: Found implementation of procedure abituguru3_suspend [2022-07-20 00:37:18,901 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2022-07-20 00:37:18,901 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2022-07-20 00:37:18,901 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-07-20 00:37:18,901 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-07-20 00:37:18,901 INFO L130 BoogieDeclarations]: Found specification of procedure abituguru3_read_increment_offset [2022-07-20 00:37:18,902 INFO L138 BoogieDeclarations]: Found implementation of procedure abituguru3_read_increment_offset [2022-07-20 00:37:18,902 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-20 00:37:18,902 INFO L130 BoogieDeclarations]: Found specification of procedure inb_p [2022-07-20 00:37:18,902 INFO L138 BoogieDeclarations]: Found implementation of procedure inb_p [2022-07-20 00:37:18,902 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2022-07-20 00:37:18,903 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2022-07-20 00:37:18,903 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-20 00:37:18,903 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-20 00:37:18,903 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-20 00:37:18,903 INFO L130 BoogieDeclarations]: Found specification of procedure abituguru3_update_device [2022-07-20 00:37:18,903 INFO L138 BoogieDeclarations]: Found implementation of procedure abituguru3_update_device [2022-07-20 00:37:18,904 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-20 00:37:18,904 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2022-07-20 00:37:18,904 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2022-07-20 00:37:18,905 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-20 00:37:18,905 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-07-20 00:37:18,906 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_update_lock_of_abituguru3_data [2022-07-20 00:37:18,906 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_update_lock_of_abituguru3_data [2022-07-20 00:37:18,906 INFO L130 BoogieDeclarations]: Found specification of procedure strcspn [2022-07-20 00:37:18,906 INFO L130 BoogieDeclarations]: Found specification of procedure inb [2022-07-20 00:37:18,906 INFO L138 BoogieDeclarations]: Found implementation of procedure inb [2022-07-20 00:37:18,907 INFO L130 BoogieDeclarations]: Found specification of procedure outb [2022-07-20 00:37:18,907 INFO L138 BoogieDeclarations]: Found implementation of procedure outb [2022-07-20 00:37:18,907 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-20 00:37:18,907 INFO L130 BoogieDeclarations]: Found specification of procedure device_remove_file [2022-07-20 00:37:18,907 INFO L138 BoogieDeclarations]: Found implementation of procedure device_remove_file [2022-07-20 00:37:18,907 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-20 00:37:18,908 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-20 00:37:18,908 INFO L130 BoogieDeclarations]: Found specification of procedure abituguru3_resume [2022-07-20 00:37:18,908 INFO L138 BoogieDeclarations]: Found implementation of procedure abituguru3_resume [2022-07-20 00:37:18,908 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2022-07-20 00:37:18,909 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2022-07-20 00:37:19,199 INFO L234 CfgBuilder]: Building ICFG [2022-07-20 00:37:19,201 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-20 00:37:21,818 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-07-20 00:37:29,151 INFO L275 CfgBuilder]: Performing block encoding [2022-07-20 00:37:29,167 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-20 00:37:29,167 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-20 00:37:29,170 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 12:37:29 BoogieIcfgContainer [2022-07-20 00:37:29,170 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-20 00:37:29,171 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-20 00:37:29,171 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-20 00:37:29,174 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-20 00:37:29,174 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 12:37:16" (1/3) ... [2022-07-20 00:37:29,175 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@462c7a51 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 12:37:29, skipping insertion in model container [2022-07-20 00:37:29,175 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 12:37:18" (2/3) ... [2022-07-20 00:37:29,176 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@462c7a51 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 12:37:29, skipping insertion in model container [2022-07-20 00:37:29,176 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 12:37:29" (3/3) ... [2022-07-20 00:37:29,177 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-32_7a-drivers--hwmon--abituguru3.ko-entry_point.cil.out.i [2022-07-20 00:37:29,188 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-20 00:37:29,189 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-20 00:37:29,244 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-20 00:37:29,252 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@52abb02, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@ca3a62 [2022-07-20 00:37:29,252 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-20 00:37:29,260 INFO L276 IsEmpty]: Start isEmpty. Operand has 559 states, 426 states have (on average 1.4366197183098592) internal successors, (612), 439 states have internal predecessors, (612), 101 states have call successors, (101), 31 states have call predecessors, (101), 30 states have return successors, (97), 97 states have call predecessors, (97), 97 states have call successors, (97) [2022-07-20 00:37:29,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-07-20 00:37:29,269 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 00:37:29,270 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] [2022-07-20 00:37:29,270 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 00:37:29,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 00:37:29,274 INFO L85 PathProgramCache]: Analyzing trace with hash 1970887230, now seen corresponding path program 1 times [2022-07-20 00:37:29,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 00:37:29,282 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1511701542] [2022-07-20 00:37:29,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 00:37:29,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 00:37:29,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:37:30,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-20 00:37:30,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:37:30,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 00:37:30,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 00:37:30,393 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1511701542] [2022-07-20 00:37:30,394 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1511701542] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 00:37:30,394 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 00:37:30,394 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-20 00:37:30,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903247241] [2022-07-20 00:37:30,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 00:37:30,402 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-20 00:37:30,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 00:37:30,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-20 00:37:30,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 00:37:30,435 INFO L87 Difference]: Start difference. First operand has 559 states, 426 states have (on average 1.4366197183098592) internal successors, (612), 439 states have internal predecessors, (612), 101 states have call successors, (101), 31 states have call predecessors, (101), 30 states have return successors, (97), 97 states have call predecessors, (97), 97 states have call successors, (97) 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, (4), 2 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-20 00:37:30,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 00:37:30,945 INFO L93 Difference]: Finished difference Result 1560 states and 2283 transitions. [2022-07-20 00:37:30,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-20 00:37:30,948 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, (4), 2 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 23 [2022-07-20 00:37:30,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 00:37:30,978 INFO L225 Difference]: With dead ends: 1560 [2022-07-20 00:37:30,978 INFO L226 Difference]: Without dead ends: 987 [2022-07-20 00:37:30,996 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 [2022-07-20 00:37:31,004 INFO L413 NwaCegarLoop]: 904 mSDtfsCounter, 616 mSDsluCounter, 736 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 616 SdHoareTripleChecker+Valid, 1640 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-20 00:37:31,005 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [616 Valid, 1640 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-20 00:37:31,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 987 states. [2022-07-20 00:37:31,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 987 to 973. [2022-07-20 00:37:31,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 973 states, 740 states have (on average 1.4) internal successors, (1036), 751 states have internal predecessors, (1036), 176 states have call successors, (176), 57 states have call predecessors, (176), 56 states have return successors, (171), 170 states have call predecessors, (171), 171 states have call successors, (171) [2022-07-20 00:37:31,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 973 states to 973 states and 1383 transitions. [2022-07-20 00:37:31,107 INFO L78 Accepts]: Start accepts. Automaton has 973 states and 1383 transitions. Word has length 23 [2022-07-20 00:37:31,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 00:37:31,108 INFO L495 AbstractCegarLoop]: Abstraction has 973 states and 1383 transitions. [2022-07-20 00:37:31,108 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, (4), 2 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-20 00:37:31,108 INFO L276 IsEmpty]: Start isEmpty. Operand 973 states and 1383 transitions. [2022-07-20 00:37:31,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-07-20 00:37:31,110 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 00:37:31,110 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] [2022-07-20 00:37:31,111 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-20 00:37:31,111 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 00:37:31,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 00:37:31,112 INFO L85 PathProgramCache]: Analyzing trace with hash -1089981821, now seen corresponding path program 1 times [2022-07-20 00:37:31,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 00:37:31,112 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054490023] [2022-07-20 00:37:31,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 00:37:31,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 00:37:31,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:37:31,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-20 00:37:31,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:37:31,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 00:37:31,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 00:37:31,669 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2054490023] [2022-07-20 00:37:31,669 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2054490023] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 00:37:31,670 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 00:37:31,670 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-20 00:37:31,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179725773] [2022-07-20 00:37:31,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 00:37:31,672 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-20 00:37:31,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 00:37:31,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-20 00:37:31,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 00:37:31,673 INFO L87 Difference]: Start difference. First operand 973 states and 1383 transitions. 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) [2022-07-20 00:37:31,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 00:37:31,948 INFO L93 Difference]: Finished difference Result 2750 states and 3913 transitions. [2022-07-20 00:37:31,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-20 00:37:31,949 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 [2022-07-20 00:37:31,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 00:37:31,960 INFO L225 Difference]: With dead ends: 2750 [2022-07-20 00:37:31,960 INFO L226 Difference]: Without dead ends: 1780 [2022-07-20 00:37:31,963 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 [2022-07-20 00:37:31,965 INFO L413 NwaCegarLoop]: 1342 mSDtfsCounter, 757 mSDsluCounter, 681 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 757 SdHoareTripleChecker+Valid, 2023 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 [2022-07-20 00:37:31,965 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [757 Valid, 2023 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-20 00:37:31,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1780 states. [2022-07-20 00:37:32,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1780 to 1771. [2022-07-20 00:37:32,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1771 states, 1340 states have (on average 1.4014925373134328) internal successors, (1878), 1356 states have internal predecessors, (1878), 323 states have call successors, (323), 108 states have call predecessors, (323), 107 states have return successors, (318), 318 states have call predecessors, (318), 318 states have call successors, (318) [2022-07-20 00:37:32,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1771 states to 1771 states and 2519 transitions. [2022-07-20 00:37:32,096 INFO L78 Accepts]: Start accepts. Automaton has 1771 states and 2519 transitions. Word has length 21 [2022-07-20 00:37:32,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 00:37:32,096 INFO L495 AbstractCegarLoop]: Abstraction has 1771 states and 2519 transitions. [2022-07-20 00:37:32,097 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) [2022-07-20 00:37:32,097 INFO L276 IsEmpty]: Start isEmpty. Operand 1771 states and 2519 transitions. [2022-07-20 00:37:32,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-07-20 00:37:32,104 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 00:37:32,104 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] [2022-07-20 00:37:32,104 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-20 00:37:32,104 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 00:37:32,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 00:37:32,105 INFO L85 PathProgramCache]: Analyzing trace with hash 2140487856, now seen corresponding path program 1 times [2022-07-20 00:37:32,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 00:37:32,105 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13098567] [2022-07-20 00:37:32,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 00:37:32,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 00:37:32,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:37:32,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-20 00:37:32,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:37:32,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 00:37:32,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:37:32,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 00:37:32,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 00:37:32,755 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [13098567] [2022-07-20 00:37:32,756 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [13098567] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 00:37:32,756 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 00:37:32,756 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-20 00:37:32,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8110292] [2022-07-20 00:37:32,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 00:37:32,757 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-20 00:37:32,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 00:37:32,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-20 00:37:32,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-20 00:37:32,758 INFO L87 Difference]: Start difference. First operand 1771 states and 2519 transitions. Second operand has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 6 states have internal predecessors, (27), 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) [2022-07-20 00:37:34,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 00:37:34,785 INFO L93 Difference]: Finished difference Result 4844 states and 7178 transitions. [2022-07-20 00:37:34,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-20 00:37:34,785 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 6 states have internal predecessors, (27), 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 32 [2022-07-20 00:37:34,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 00:37:34,803 INFO L225 Difference]: With dead ends: 4844 [2022-07-20 00:37:34,803 INFO L226 Difference]: Without dead ends: 3076 [2022-07-20 00:37:34,810 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2022-07-20 00:37:34,811 INFO L413 NwaCegarLoop]: 1337 mSDtfsCounter, 915 mSDsluCounter, 4985 mSDsCounter, 0 mSdLazyCounter, 1122 mSolverCounterSat, 155 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 969 SdHoareTripleChecker+Valid, 6322 SdHoareTripleChecker+Invalid, 1277 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 155 IncrementalHoareTripleChecker+Valid, 1122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-07-20 00:37:34,811 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [969 Valid, 6322 Invalid, 1277 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [155 Valid, 1122 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-07-20 00:37:34,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3076 states. [2022-07-20 00:37:34,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3076 to 1793. [2022-07-20 00:37:34,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1793 states, 1358 states have (on average 1.4005891016200294) internal successors, (1902), 1374 states have internal predecessors, (1902), 327 states have call successors, (327), 108 states have call predecessors, (327), 107 states have return successors, (322), 322 states have call predecessors, (322), 322 states have call successors, (322) [2022-07-20 00:37:34,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1793 states to 1793 states and 2551 transitions. [2022-07-20 00:37:34,942 INFO L78 Accepts]: Start accepts. Automaton has 1793 states and 2551 transitions. Word has length 32 [2022-07-20 00:37:34,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 00:37:34,943 INFO L495 AbstractCegarLoop]: Abstraction has 1793 states and 2551 transitions. [2022-07-20 00:37:34,943 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 6 states have internal predecessors, (27), 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) [2022-07-20 00:37:34,943 INFO L276 IsEmpty]: Start isEmpty. Operand 1793 states and 2551 transitions. [2022-07-20 00:37:34,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-07-20 00:37:34,944 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 00:37:34,945 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] [2022-07-20 00:37:34,945 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-20 00:37:34,945 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 00:37:34,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 00:37:34,946 INFO L85 PathProgramCache]: Analyzing trace with hash -1935624722, now seen corresponding path program 1 times [2022-07-20 00:37:34,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 00:37:34,946 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063066324] [2022-07-20 00:37:34,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 00:37:34,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 00:37:35,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:37:35,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-20 00:37:35,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:37:35,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 00:37:35,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:37:35,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 00:37:35,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 00:37:35,457 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1063066324] [2022-07-20 00:37:35,457 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1063066324] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 00:37:35,457 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 00:37:35,458 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-20 00:37:35,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925843567] [2022-07-20 00:37:35,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 00:37:35,458 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-20 00:37:35,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 00:37:35,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-20 00:37:35,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-20 00:37:35,459 INFO L87 Difference]: Start difference. First operand 1793 states and 2551 transitions. Second operand has 4 states, 4 states have (on average 6.75) internal successors, (27), 3 states have internal predecessors, (27), 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) [2022-07-20 00:37:36,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 00:37:36,243 INFO L93 Difference]: Finished difference Result 1877 states and 2700 transitions. [2022-07-20 00:37:36,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-20 00:37:36,244 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 3 states have internal predecessors, (27), 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 32 [2022-07-20 00:37:36,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 00:37:36,256 INFO L225 Difference]: With dead ends: 1877 [2022-07-20 00:37:36,256 INFO L226 Difference]: Without dead ends: 1874 [2022-07-20 00:37:36,258 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-20 00:37:36,259 INFO L413 NwaCegarLoop]: 763 mSDtfsCounter, 805 mSDsluCounter, 477 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 174 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 868 SdHoareTripleChecker+Valid, 1240 SdHoareTripleChecker+Invalid, 305 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 174 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-20 00:37:36,259 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [868 Valid, 1240 Invalid, 305 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [174 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-20 00:37:36,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1874 states. [2022-07-20 00:37:36,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1874 to 1792. [2022-07-20 00:37:36,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1792 states, 1358 states have (on average 1.3998527245949925) internal successors, (1901), 1373 states have internal predecessors, (1901), 326 states have call successors, (326), 108 states have call predecessors, (326), 107 states have return successors, (322), 322 states have call predecessors, (322), 322 states have call successors, (322) [2022-07-20 00:37:36,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1792 states to 1792 states and 2549 transitions. [2022-07-20 00:37:36,326 INFO L78 Accepts]: Start accepts. Automaton has 1792 states and 2549 transitions. Word has length 32 [2022-07-20 00:37:36,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 00:37:36,327 INFO L495 AbstractCegarLoop]: Abstraction has 1792 states and 2549 transitions. [2022-07-20 00:37:36,327 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 3 states have internal predecessors, (27), 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) [2022-07-20 00:37:36,327 INFO L276 IsEmpty]: Start isEmpty. Operand 1792 states and 2549 transitions. [2022-07-20 00:37:36,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-07-20 00:37:36,329 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 00:37:36,329 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] [2022-07-20 00:37:36,329 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-20 00:37:36,329 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 00:37:36,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 00:37:36,330 INFO L85 PathProgramCache]: Analyzing trace with hash 125104557, now seen corresponding path program 1 times [2022-07-20 00:37:36,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 00:37:36,330 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1181187584] [2022-07-20 00:37:36,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 00:37:36,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 00:37:36,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:37:36,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-20 00:37:36,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:37:36,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 00:37:36,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:37:36,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 00:37:36,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 00:37:36,924 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1181187584] [2022-07-20 00:37:36,924 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1181187584] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 00:37:36,924 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 00:37:36,924 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-20 00:37:36,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265941776] [2022-07-20 00:37:36,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 00:37:36,925 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-20 00:37:36,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 00:37:36,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-20 00:37:36,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-20 00:37:36,926 INFO L87 Difference]: Start difference. First operand 1792 states and 2549 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) [2022-07-20 00:37:37,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 00:37:37,630 INFO L93 Difference]: Finished difference Result 1876 states and 2698 transitions. [2022-07-20 00:37:37,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-20 00:37:37,630 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 [2022-07-20 00:37:37,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 00:37:37,641 INFO L225 Difference]: With dead ends: 1876 [2022-07-20 00:37:37,642 INFO L226 Difference]: Without dead ends: 1873 [2022-07-20 00:37:37,643 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-20 00:37:37,645 INFO L413 NwaCegarLoop]: 761 mSDtfsCounter, 802 mSDsluCounter, 476 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 173 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 865 SdHoareTripleChecker+Valid, 1237 SdHoareTripleChecker+Invalid, 304 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 173 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-20 00:37:37,646 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [865 Valid, 1237 Invalid, 304 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [173 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-20 00:37:37,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1873 states. [2022-07-20 00:37:37,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1873 to 1791. [2022-07-20 00:37:37,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1791 states, 1358 states have (on average 1.3991163475699557) internal successors, (1900), 1372 states have internal predecessors, (1900), 325 states have call successors, (325), 108 states have call predecessors, (325), 107 states have return successors, (322), 322 states have call predecessors, (322), 322 states have call successors, (322) [2022-07-20 00:37:37,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1791 states to 1791 states and 2547 transitions. [2022-07-20 00:37:37,708 INFO L78 Accepts]: Start accepts. Automaton has 1791 states and 2547 transitions. Word has length 33 [2022-07-20 00:37:37,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 00:37:37,709 INFO L495 AbstractCegarLoop]: Abstraction has 1791 states and 2547 transitions. [2022-07-20 00:37:37,709 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) [2022-07-20 00:37:37,709 INFO L276 IsEmpty]: Start isEmpty. Operand 1791 states and 2547 transitions. [2022-07-20 00:37:37,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-07-20 00:37:37,711 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 00:37:37,712 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] [2022-07-20 00:37:37,712 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-20 00:37:37,712 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 00:37:37,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 00:37:37,712 INFO L85 PathProgramCache]: Analyzing trace with hash -416792367, now seen corresponding path program 1 times [2022-07-20 00:37:37,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 00:37:37,713 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951309110] [2022-07-20 00:37:37,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 00:37:37,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 00:37:37,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:37:38,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-20 00:37:38,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:37:38,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 00:37:38,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:37:38,214 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 00:37:38,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 00:37:38,215 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [951309110] [2022-07-20 00:37:38,215 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [951309110] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 00:37:38,216 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 00:37:38,216 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-20 00:37:38,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653715050] [2022-07-20 00:37:38,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 00:37:38,216 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-20 00:37:38,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 00:37:38,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-20 00:37:38,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-20 00:37:38,217 INFO L87 Difference]: Start difference. First operand 1791 states and 2547 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) [2022-07-20 00:37:39,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 00:37:39,320 INFO L93 Difference]: Finished difference Result 5089 states and 7303 transitions. [2022-07-20 00:37:39,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-20 00:37:39,321 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 [2022-07-20 00:37:39,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 00:37:39,337 INFO L225 Difference]: With dead ends: 5089 [2022-07-20 00:37:39,338 INFO L226 Difference]: Without dead ends: 3289 [2022-07-20 00:37:39,345 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-20 00:37:39,346 INFO L413 NwaCegarLoop]: 823 mSDtfsCounter, 803 mSDsluCounter, 1023 mSDsCounter, 0 mSdLazyCounter, 369 mSolverCounterSat, 244 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 874 SdHoareTripleChecker+Valid, 1846 SdHoareTripleChecker+Invalid, 613 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 244 IncrementalHoareTripleChecker+Valid, 369 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-20 00:37:39,346 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [874 Valid, 1846 Invalid, 613 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [244 Valid, 369 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-20 00:37:39,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3289 states. [2022-07-20 00:37:39,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3289 to 3186. [2022-07-20 00:37:39,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3186 states, 2415 states have (on average 1.3958592132505176) internal successors, (3371), 2452 states have internal predecessors, (3371), 589 states have call successors, (589), 195 states have call predecessors, (589), 181 states have return successors, (583), 562 states have call predecessors, (583), 579 states have call successors, (583) [2022-07-20 00:37:39,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3186 states to 3186 states and 4543 transitions. [2022-07-20 00:37:39,458 INFO L78 Accepts]: Start accepts. Automaton has 3186 states and 4543 transitions. Word has length 34 [2022-07-20 00:37:39,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 00:37:39,459 INFO L495 AbstractCegarLoop]: Abstraction has 3186 states and 4543 transitions. [2022-07-20 00:37:39,459 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) [2022-07-20 00:37:39,459 INFO L276 IsEmpty]: Start isEmpty. Operand 3186 states and 4543 transitions. [2022-07-20 00:37:39,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-07-20 00:37:39,461 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 00:37:39,461 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-20 00:37:39,462 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-20 00:37:39,462 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 00:37:39,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 00:37:39,462 INFO L85 PathProgramCache]: Analyzing trace with hash -1540623621, now seen corresponding path program 1 times [2022-07-20 00:37:39,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 00:37:39,463 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1092101429] [2022-07-20 00:37:39,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 00:37:39,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 00:37:39,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:37:40,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-20 00:37:40,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:37:40,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 00:37:40,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:37:40,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-20 00:37:40,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:37:40,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 00:37:40,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:37:40,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-20 00:37:40,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:37:40,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-20 00:37:40,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:37:40,054 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 00:37:40,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 00:37:40,054 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1092101429] [2022-07-20 00:37:40,054 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1092101429] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 00:37:40,055 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 00:37:40,055 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-20 00:37:40,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739029042] [2022-07-20 00:37:40,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 00:37:40,056 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-20 00:37:40,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 00:37:40,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-20 00:37:40,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-20 00:37:40,057 INFO L87 Difference]: Start difference. First operand 3186 states and 4543 transitions. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (9), 5 states have call predecessors, (9), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2022-07-20 00:37:43,295 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 [] [2022-07-20 00:37:45,479 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 [] [2022-07-20 00:37:46,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 00:37:46,833 INFO L93 Difference]: Finished difference Result 8718 states and 12635 transitions. [2022-07-20 00:37:46,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-20 00:37:46,834 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (9), 5 states have call predecessors, (9), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 66 [2022-07-20 00:37:46,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 00:37:46,864 INFO L225 Difference]: With dead ends: 8718 [2022-07-20 00:37:46,865 INFO L226 Difference]: Without dead ends: 5535 [2022-07-20 00:37:46,878 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-07-20 00:37:46,879 INFO L413 NwaCegarLoop]: 991 mSDtfsCounter, 1103 mSDsluCounter, 1628 mSDsCounter, 0 mSdLazyCounter, 915 mSolverCounterSat, 568 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1203 SdHoareTripleChecker+Valid, 2619 SdHoareTripleChecker+Invalid, 1485 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 568 IncrementalHoareTripleChecker+Valid, 915 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.5s IncrementalHoareTripleChecker+Time [2022-07-20 00:37:46,879 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1203 Valid, 2619 Invalid, 1485 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [568 Valid, 915 Invalid, 2 Unknown, 0 Unchecked, 6.5s Time] [2022-07-20 00:37:46,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5535 states. [2022-07-20 00:37:47,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5535 to 4738. [2022-07-20 00:37:47,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4738 states, 3613 states have (on average 1.3874896208137282) internal successors, (5013), 3662 states have internal predecessors, (5013), 857 states have call successors, (857), 285 states have call predecessors, (857), 267 states have return successors, (853), 826 states have call predecessors, (853), 847 states have call successors, (853) [2022-07-20 00:37:47,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4738 states to 4738 states and 6723 transitions. [2022-07-20 00:37:47,059 INFO L78 Accepts]: Start accepts. Automaton has 4738 states and 6723 transitions. Word has length 66 [2022-07-20 00:37:47,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 00:37:47,059 INFO L495 AbstractCegarLoop]: Abstraction has 4738 states and 6723 transitions. [2022-07-20 00:37:47,060 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (9), 5 states have call predecessors, (9), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2022-07-20 00:37:47,060 INFO L276 IsEmpty]: Start isEmpty. Operand 4738 states and 6723 transitions. [2022-07-20 00:37:47,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-07-20 00:37:47,063 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 00:37:47,063 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-20 00:37:47,064 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-20 00:37:47,064 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 00:37:47,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 00:37:47,064 INFO L85 PathProgramCache]: Analyzing trace with hash 127935254, now seen corresponding path program 1 times [2022-07-20 00:37:47,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 00:37:47,065 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1114201120] [2022-07-20 00:37:47,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 00:37:47,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 00:37:47,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:37:47,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-20 00:37:47,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:37:47,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-20 00:37:47,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:37:47,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-20 00:37:47,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:37:47,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 00:37:47,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:37:47,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-20 00:37:47,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:37:47,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 00:37:47,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:37:47,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-20 00:37:47,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:37:47,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-20 00:37:47,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:37:47,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-20 00:37:47,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:37:47,645 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-20 00:37:47,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 00:37:47,645 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1114201120] [2022-07-20 00:37:47,645 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1114201120] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 00:37:47,645 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 00:37:47,645 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-20 00:37:47,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739418109] [2022-07-20 00:37:47,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 00:37:47,647 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-20 00:37:47,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 00:37:47,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-20 00:37:47,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-20 00:37:47,648 INFO L87 Difference]: Start difference. First operand 4738 states and 6723 transitions. Second operand has 6 states, 6 states have (on average 10.0) internal successors, (60), 3 states have internal predecessors, (60), 2 states have call successors, (13), 5 states have call predecessors, (13), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-07-20 00:37:50,874 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 [] [2022-07-20 00:37:51,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 00:37:51,882 INFO L93 Difference]: Finished difference Result 11124 states and 15869 transitions. [2022-07-20 00:37:51,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-20 00:37:51,883 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 3 states have internal predecessors, (60), 2 states have call successors, (13), 5 states have call predecessors, (13), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 85 [2022-07-20 00:37:51,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 00:37:51,914 INFO L225 Difference]: With dead ends: 11124 [2022-07-20 00:37:51,915 INFO L226 Difference]: Without dead ends: 6389 [2022-07-20 00:37:51,932 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2022-07-20 00:37:51,933 INFO L413 NwaCegarLoop]: 727 mSDtfsCounter, 756 mSDsluCounter, 1413 mSDsCounter, 0 mSdLazyCounter, 1102 mSolverCounterSat, 370 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 821 SdHoareTripleChecker+Valid, 2140 SdHoareTripleChecker+Invalid, 1473 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 370 IncrementalHoareTripleChecker+Valid, 1102 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2022-07-20 00:37:51,933 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [821 Valid, 2140 Invalid, 1473 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [370 Valid, 1102 Invalid, 1 Unknown, 0 Unchecked, 4.0s Time] [2022-07-20 00:37:51,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6389 states. [2022-07-20 00:37:52,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6389 to 6142. [2022-07-20 00:37:52,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6142 states, 4803 states have (on average 1.402665001041016) internal successors, (6737), 4868 states have internal predecessors, (6737), 995 states have call successors, (995), 361 states have call predecessors, (995), 343 states have return successors, (991), 948 states have call predecessors, (991), 979 states have call successors, (991) [2022-07-20 00:37:52,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6142 states to 6142 states and 8723 transitions. [2022-07-20 00:37:52,162 INFO L78 Accepts]: Start accepts. Automaton has 6142 states and 8723 transitions. Word has length 85 [2022-07-20 00:37:52,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 00:37:52,163 INFO L495 AbstractCegarLoop]: Abstraction has 6142 states and 8723 transitions. [2022-07-20 00:37:52,164 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 3 states have internal predecessors, (60), 2 states have call successors, (13), 5 states have call predecessors, (13), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-07-20 00:37:52,164 INFO L276 IsEmpty]: Start isEmpty. Operand 6142 states and 8723 transitions. [2022-07-20 00:37:52,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-07-20 00:37:52,167 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 00:37:52,167 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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] [2022-07-20 00:37:52,167 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-20 00:37:52,168 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 00:37:52,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 00:37:52,168 INFO L85 PathProgramCache]: Analyzing trace with hash 986755271, now seen corresponding path program 1 times [2022-07-20 00:37:52,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 00:37:52,168 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2126852710] [2022-07-20 00:37:52,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 00:37:52,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 00:37:52,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:37:52,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-20 00:37:52,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:37:52,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 00:37:52,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:37:52,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-20 00:37:52,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:37:52,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 00:37:52,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:37:52,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-20 00:37:52,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:37:52,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-20 00:37:52,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:37:52,673 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-20 00:37:52,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 00:37:52,673 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2126852710] [2022-07-20 00:37:52,673 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2126852710] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 00:37:52,673 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 00:37:52,673 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-20 00:37:52,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187673350] [2022-07-20 00:37:52,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 00:37:52,674 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-20 00:37:52,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 00:37:52,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-20 00:37:52,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-20 00:37:52,676 INFO L87 Difference]: Start difference. First operand 6142 states and 8723 transitions. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 3 states have internal predecessors, (69), 2 states have call successors, (9), 5 states have call predecessors, (9), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-07-20 00:37:56,194 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 00:37:58,823 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 00:38:00,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 00:38:00,463 INFO L93 Difference]: Finished difference Result 15372 states and 22173 transitions. [2022-07-20 00:38:00,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-20 00:38:00,463 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 3 states have internal predecessors, (69), 2 states have call successors, (9), 5 states have call predecessors, (9), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 86 [2022-07-20 00:38:00,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 00:38:00,508 INFO L225 Difference]: With dead ends: 15372 [2022-07-20 00:38:00,508 INFO L226 Difference]: Without dead ends: 9233 [2022-07-20 00:38:00,531 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-07-20 00:38:00,532 INFO L413 NwaCegarLoop]: 1371 mSDtfsCounter, 820 mSDsluCounter, 2892 mSDsCounter, 0 mSdLazyCounter, 1367 mSolverCounterSat, 298 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 918 SdHoareTripleChecker+Valid, 4263 SdHoareTripleChecker+Invalid, 1667 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 298 IncrementalHoareTripleChecker+Valid, 1367 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.5s IncrementalHoareTripleChecker+Time [2022-07-20 00:38:00,533 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [918 Valid, 4263 Invalid, 1667 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [298 Valid, 1367 Invalid, 2 Unknown, 0 Unchecked, 7.5s Time] [2022-07-20 00:38:00,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9233 states. [2022-07-20 00:38:00,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9233 to 8128. [2022-07-20 00:38:00,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8128 states, 6388 states have (on average 1.3963681903569192) internal successors, (8920), 6464 states have internal predecessors, (8920), 1289 states have call successors, (1289), 469 states have call predecessors, (1289), 450 states have return successors, (1292), 1242 states have call predecessors, (1292), 1276 states have call successors, (1292) [2022-07-20 00:38:00,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8128 states to 8128 states and 11501 transitions. [2022-07-20 00:38:00,897 INFO L78 Accepts]: Start accepts. Automaton has 8128 states and 11501 transitions. Word has length 86 [2022-07-20 00:38:00,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 00:38:00,898 INFO L495 AbstractCegarLoop]: Abstraction has 8128 states and 11501 transitions. [2022-07-20 00:38:00,898 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 3 states have internal predecessors, (69), 2 states have call successors, (9), 5 states have call predecessors, (9), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-07-20 00:38:00,898 INFO L276 IsEmpty]: Start isEmpty. Operand 8128 states and 11501 transitions. [2022-07-20 00:38:00,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-07-20 00:38:00,907 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 00:38:00,907 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 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] [2022-07-20 00:38:00,907 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-20 00:38:00,908 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 00:38:00,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 00:38:00,908 INFO L85 PathProgramCache]: Analyzing trace with hash -216719008, now seen corresponding path program 1 times [2022-07-20 00:38:00,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 00:38:00,909 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1258860881] [2022-07-20 00:38:00,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 00:38:00,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 00:38:01,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:38:01,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-20 00:38:01,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:38:01,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 00:38:01,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:38:01,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-20 00:38:01,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:38:01,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 00:38:01,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:38:01,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-20 00:38:01,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:38:01,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-20 00:38:01,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:38:01,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 00:38:01,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:38:01,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-20 00:38:01,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:38:01,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-20 00:38:01,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:38:01,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-07-20 00:38:01,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:38:01,460 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-07-20 00:38:01,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 00:38:01,460 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1258860881] [2022-07-20 00:38:01,460 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1258860881] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 00:38:01,460 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 00:38:01,460 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-20 00:38:01,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289792519] [2022-07-20 00:38:01,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 00:38:01,461 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-20 00:38:01,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 00:38:01,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-20 00:38:01,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-20 00:38:01,462 INFO L87 Difference]: Start difference. First operand 8128 states and 11501 transitions. Second operand has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 3 states have internal predecessors, (83), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-07-20 00:38:04,800 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 00:38:06,838 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 00:38:09,243 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 [] [2022-07-20 00:38:11,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 00:38:11,959 INFO L93 Difference]: Finished difference Result 19602 states and 28161 transitions. [2022-07-20 00:38:11,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-20 00:38:11,960 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 3 states have internal predecessors, (83), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 117 [2022-07-20 00:38:11,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 00:38:12,014 INFO L225 Difference]: With dead ends: 19602 [2022-07-20 00:38:12,014 INFO L226 Difference]: Without dead ends: 11477 [2022-07-20 00:38:12,045 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2022-07-20 00:38:12,046 INFO L413 NwaCegarLoop]: 1266 mSDtfsCounter, 1075 mSDsluCounter, 2630 mSDsCounter, 0 mSdLazyCounter, 2331 mSolverCounterSat, 645 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1143 SdHoareTripleChecker+Valid, 3896 SdHoareTripleChecker+Invalid, 2979 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 645 IncrementalHoareTripleChecker+Valid, 2331 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.1s IncrementalHoareTripleChecker+Time [2022-07-20 00:38:12,046 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1143 Valid, 3896 Invalid, 2979 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [645 Valid, 2331 Invalid, 3 Unknown, 0 Unchecked, 10.1s Time] [2022-07-20 00:38:12,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11477 states. [2022-07-20 00:38:12,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11477 to 10110. [2022-07-20 00:38:12,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10110 states, 7968 states have (on average 1.3928212851405624) internal successors, (11098), 8058 states have internal predecessors, (11098), 1587 states have call successors, (1587), 575 states have call predecessors, (1587), 554 states have return successors, (1594), 1536 states have call predecessors, (1594), 1574 states have call successors, (1594) [2022-07-20 00:38:12,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10110 states to 10110 states and 14279 transitions. [2022-07-20 00:38:12,401 INFO L78 Accepts]: Start accepts. Automaton has 10110 states and 14279 transitions. Word has length 117 [2022-07-20 00:38:12,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 00:38:12,402 INFO L495 AbstractCegarLoop]: Abstraction has 10110 states and 14279 transitions. [2022-07-20 00:38:12,402 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 3 states have internal predecessors, (83), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-07-20 00:38:12,403 INFO L276 IsEmpty]: Start isEmpty. Operand 10110 states and 14279 transitions. [2022-07-20 00:38:12,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2022-07-20 00:38:12,407 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 00:38:12,408 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 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] [2022-07-20 00:38:12,408 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-20 00:38:12,408 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 00:38:12,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 00:38:12,409 INFO L85 PathProgramCache]: Analyzing trace with hash 504148532, now seen corresponding path program 1 times [2022-07-20 00:38:12,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 00:38:12,409 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [337898784] [2022-07-20 00:38:12,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 00:38:12,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 00:38:12,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:38:12,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-20 00:38:12,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:38:12,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 00:38:12,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:38:12,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-20 00:38:12,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:38:12,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 00:38:12,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:38:12,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-20 00:38:12,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:38:12,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-20 00:38:12,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:38:12,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 00:38:12,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:38:12,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-20 00:38:12,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:38:12,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-20 00:38:12,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:38:12,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-20 00:38:12,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:38:12,901 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-07-20 00:38:12,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 00:38:12,902 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [337898784] [2022-07-20 00:38:12,902 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [337898784] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 00:38:12,902 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 00:38:12,902 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-20 00:38:12,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779470783] [2022-07-20 00:38:12,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 00:38:12,903 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-20 00:38:12,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 00:38:12,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-20 00:38:12,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-20 00:38:12,904 INFO L87 Difference]: Start difference. First operand 10110 states and 14279 transitions. Second operand has 7 states, 7 states have (on average 12.0) internal successors, (84), 3 states have internal predecessors, (84), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-07-20 00:38:16,301 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 [] [2022-07-20 00:38:18,669 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 [] [2022-07-20 00:38:21,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 00:38:21,141 INFO L93 Difference]: Finished difference Result 23836 states and 34157 transitions. [2022-07-20 00:38:21,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-20 00:38:21,141 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.0) internal successors, (84), 3 states have internal predecessors, (84), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 119 [2022-07-20 00:38:21,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 00:38:21,196 INFO L225 Difference]: With dead ends: 23836 [2022-07-20 00:38:21,196 INFO L226 Difference]: Without dead ends: 13729 [2022-07-20 00:38:21,224 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2022-07-20 00:38:21,225 INFO L413 NwaCegarLoop]: 1293 mSDtfsCounter, 1168 mSDsluCounter, 2113 mSDsCounter, 0 mSdLazyCounter, 2003 mSolverCounterSat, 785 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1236 SdHoareTripleChecker+Valid, 3406 SdHoareTripleChecker+Invalid, 2790 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 785 IncrementalHoareTripleChecker+Valid, 2003 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.8s IncrementalHoareTripleChecker+Time [2022-07-20 00:38:21,225 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1236 Valid, 3406 Invalid, 2790 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [785 Valid, 2003 Invalid, 2 Unknown, 0 Unchecked, 7.8s Time] [2022-07-20 00:38:21,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13729 states. [2022-07-20 00:38:21,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13729 to 12092. [2022-07-20 00:38:21,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12092 states, 9548 states have (on average 1.3904482614160034) internal successors, (13276), 9652 states have internal predecessors, (13276), 1885 states have call successors, (1885), 681 states have call predecessors, (1885), 658 states have return successors, (1896), 1830 states have call predecessors, (1896), 1872 states have call successors, (1896) [2022-07-20 00:38:21,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12092 states to 12092 states and 17057 transitions. [2022-07-20 00:38:21,624 INFO L78 Accepts]: Start accepts. Automaton has 12092 states and 17057 transitions. Word has length 119 [2022-07-20 00:38:21,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 00:38:21,624 INFO L495 AbstractCegarLoop]: Abstraction has 12092 states and 17057 transitions. [2022-07-20 00:38:21,625 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.0) internal successors, (84), 3 states have internal predecessors, (84), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-07-20 00:38:21,625 INFO L276 IsEmpty]: Start isEmpty. Operand 12092 states and 17057 transitions. [2022-07-20 00:38:21,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2022-07-20 00:38:21,630 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 00:38:21,630 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 00:38:21,630 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-20 00:38:21,630 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 00:38:21,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 00:38:21,631 INFO L85 PathProgramCache]: Analyzing trace with hash 1210000877, now seen corresponding path program 1 times [2022-07-20 00:38:21,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 00:38:21,631 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1581096870] [2022-07-20 00:38:21,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 00:38:21,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 00:38:21,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:38:22,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-20 00:38:22,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:38:22,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 00:38:22,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:38:22,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-20 00:38:22,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:38:22,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 00:38:22,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:38:22,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-20 00:38:22,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:38:22,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-20 00:38:22,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:38:22,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 00:38:22,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:38:22,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-20 00:38:22,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:38:22,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-20 00:38:22,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:38:22,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-20 00:38:22,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:38:22,109 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-07-20 00:38:22,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 00:38:22,109 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1581096870] [2022-07-20 00:38:22,109 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1581096870] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 00:38:22,109 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 00:38:22,110 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-20 00:38:22,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31613955] [2022-07-20 00:38:22,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 00:38:22,110 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-20 00:38:22,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 00:38:22,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-20 00:38:22,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-20 00:38:22,111 INFO L87 Difference]: Start difference. First operand 12092 states and 17057 transitions. Second operand has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 3 states have internal predecessors, (83), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-07-20 00:38:25,730 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 [] [2022-07-20 00:38:26,897 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 00:38:29,335 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 00:38:31,370 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 00:38:34,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 00:38:34,221 INFO L93 Difference]: Finished difference Result 28070 states and 40153 transitions. [2022-07-20 00:38:34,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-20 00:38:34,223 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 3 states have internal predecessors, (83), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 119 [2022-07-20 00:38:34,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 00:38:34,276 INFO L225 Difference]: With dead ends: 28070 [2022-07-20 00:38:34,276 INFO L226 Difference]: Without dead ends: 15981 [2022-07-20 00:38:34,299 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2022-07-20 00:38:34,300 INFO L413 NwaCegarLoop]: 1279 mSDtfsCounter, 1072 mSDsluCounter, 2677 mSDsCounter, 0 mSdLazyCounter, 2325 mSolverCounterSat, 644 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1140 SdHoareTripleChecker+Valid, 3956 SdHoareTripleChecker+Invalid, 2972 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 644 IncrementalHoareTripleChecker+Valid, 2325 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.6s IncrementalHoareTripleChecker+Time [2022-07-20 00:38:34,300 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1140 Valid, 3956 Invalid, 2972 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [644 Valid, 2325 Invalid, 3 Unknown, 0 Unchecked, 11.6s Time] [2022-07-20 00:38:34,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15981 states. [2022-07-20 00:38:34,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15981 to 14074. [2022-07-20 00:38:34,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14074 states, 11128 states have (on average 1.3887491013659239) internal successors, (15454), 11246 states have internal predecessors, (15454), 2183 states have call successors, (2183), 787 states have call predecessors, (2183), 762 states have return successors, (2198), 2124 states have call predecessors, (2198), 2170 states have call successors, (2198) [2022-07-20 00:38:34,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14074 states to 14074 states and 19835 transitions. [2022-07-20 00:38:34,758 INFO L78 Accepts]: Start accepts. Automaton has 14074 states and 19835 transitions. Word has length 119 [2022-07-20 00:38:34,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 00:38:34,758 INFO L495 AbstractCegarLoop]: Abstraction has 14074 states and 19835 transitions. [2022-07-20 00:38:34,758 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 3 states have internal predecessors, (83), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-07-20 00:38:34,759 INFO L276 IsEmpty]: Start isEmpty. Operand 14074 states and 19835 transitions. [2022-07-20 00:38:34,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2022-07-20 00:38:34,763 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 00:38:34,764 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 00:38:34,764 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-20 00:38:34,764 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 00:38:34,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 00:38:34,765 INFO L85 PathProgramCache]: Analyzing trace with hash 278316373, now seen corresponding path program 1 times [2022-07-20 00:38:34,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 00:38:34,765 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1954012011] [2022-07-20 00:38:34,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 00:38:34,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 00:38:34,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:38:35,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-20 00:38:35,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:38:35,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 00:38:35,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:38:35,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-20 00:38:35,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:38:35,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 00:38:35,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:38:35,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-20 00:38:35,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:38:35,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-20 00:38:35,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:38:35,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 00:38:35,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:38:35,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-20 00:38:35,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:38:35,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-20 00:38:35,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:38:35,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-07-20 00:38:35,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:38:35,274 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-07-20 00:38:35,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 00:38:35,274 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1954012011] [2022-07-20 00:38:35,274 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1954012011] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 00:38:35,274 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 00:38:35,274 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-20 00:38:35,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317741129] [2022-07-20 00:38:35,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 00:38:35,275 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-20 00:38:35,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 00:38:35,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-20 00:38:35,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-07-20 00:38:35,276 INFO L87 Difference]: Start difference. First operand 14074 states and 19835 transitions. Second operand has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (13), 6 states have call predecessors, (13), 2 states have return successors, (10), 3 states have call predecessors, (10), 2 states have call successors, (10) [2022-07-20 00:38:38,804 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 [] [2022-07-20 00:38:40,849 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 00:38:43,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 00:38:43,027 INFO L93 Difference]: Finished difference Result 30035 states and 42747 transitions. [2022-07-20 00:38:43,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-20 00:38:43,028 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (13), 6 states have call predecessors, (13), 2 states have return successors, (10), 3 states have call predecessors, (10), 2 states have call successors, (10) Word has length 120 [2022-07-20 00:38:43,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 00:38:43,099 INFO L225 Difference]: With dead ends: 30035 [2022-07-20 00:38:43,100 INFO L226 Difference]: Without dead ends: 15964 [2022-07-20 00:38:43,140 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=202, Unknown=0, NotChecked=0, Total=272 [2022-07-20 00:38:43,142 INFO L413 NwaCegarLoop]: 718 mSDtfsCounter, 1148 mSDsluCounter, 2172 mSDsCounter, 0 mSdLazyCounter, 1798 mSolverCounterSat, 546 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1184 SdHoareTripleChecker+Valid, 2890 SdHoareTripleChecker+Invalid, 2346 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 546 IncrementalHoareTripleChecker+Valid, 1798 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.3s IncrementalHoareTripleChecker+Time [2022-07-20 00:38:43,142 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1184 Valid, 2890 Invalid, 2346 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [546 Valid, 1798 Invalid, 2 Unknown, 0 Unchecked, 7.3s Time] [2022-07-20 00:38:43,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15964 states. [2022-07-20 00:38:43,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15964 to 14074. [2022-07-20 00:38:43,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14074 states, 11128 states have (on average 1.388389647735442) internal successors, (15450), 11246 states have internal predecessors, (15450), 2183 states have call successors, (2183), 787 states have call predecessors, (2183), 762 states have return successors, (2198), 2124 states have call predecessors, (2198), 2170 states have call successors, (2198) [2022-07-20 00:38:43,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14074 states to 14074 states and 19831 transitions. [2022-07-20 00:38:43,704 INFO L78 Accepts]: Start accepts. Automaton has 14074 states and 19831 transitions. Word has length 120 [2022-07-20 00:38:43,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 00:38:43,704 INFO L495 AbstractCegarLoop]: Abstraction has 14074 states and 19831 transitions. [2022-07-20 00:38:43,704 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (13), 6 states have call predecessors, (13), 2 states have return successors, (10), 3 states have call predecessors, (10), 2 states have call successors, (10) [2022-07-20 00:38:43,704 INFO L276 IsEmpty]: Start isEmpty. Operand 14074 states and 19831 transitions. [2022-07-20 00:38:43,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-07-20 00:38:43,710 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 00:38:43,710 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 00:38:43,711 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-20 00:38:43,711 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 00:38:43,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 00:38:43,711 INFO L85 PathProgramCache]: Analyzing trace with hash -1220157427, now seen corresponding path program 1 times [2022-07-20 00:38:43,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 00:38:43,712 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1745853959] [2022-07-20 00:38:43,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 00:38:43,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 00:38:44,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:38:44,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-20 00:38:44,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:38:44,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 00:38:44,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:38:44,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-20 00:38:44,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:38:44,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 00:38:44,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:38:44,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-20 00:38:44,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:38:44,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-20 00:38:44,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:38:44,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 00:38:44,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:38:44,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-20 00:38:44,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:38:44,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-20 00:38:44,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:38:44,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-07-20 00:38:44,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:38:44,281 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-07-20 00:38:44,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 00:38:44,281 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1745853959] [2022-07-20 00:38:44,281 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1745853959] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 00:38:44,282 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 00:38:44,282 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-20 00:38:44,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242345901] [2022-07-20 00:38:44,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 00:38:44,282 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-20 00:38:44,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 00:38:44,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-20 00:38:44,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-07-20 00:38:44,284 INFO L87 Difference]: Start difference. First operand 14074 states and 19831 transitions. Second operand has 9 states, 9 states have (on average 9.666666666666666) internal successors, (87), 4 states have internal predecessors, (87), 2 states have call successors, (13), 6 states have call predecessors, (13), 2 states have return successors, (10), 3 states have call predecessors, (10), 2 states have call successors, (10) [2022-07-20 00:38:47,611 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 [] [2022-07-20 00:38:49,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 00:38:49,341 INFO L93 Difference]: Finished difference Result 30035 states and 42739 transitions. [2022-07-20 00:38:49,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-20 00:38:49,342 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.666666666666666) internal successors, (87), 4 states have internal predecessors, (87), 2 states have call successors, (13), 6 states have call predecessors, (13), 2 states have return successors, (10), 3 states have call predecessors, (10), 2 states have call successors, (10) Word has length 123 [2022-07-20 00:38:49,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 00:38:49,407 INFO L225 Difference]: With dead ends: 30035 [2022-07-20 00:38:49,407 INFO L226 Difference]: Without dead ends: 15964 [2022-07-20 00:38:49,449 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=202, Unknown=0, NotChecked=0, Total=272 [2022-07-20 00:38:49,450 INFO L413 NwaCegarLoop]: 700 mSDtfsCounter, 1387 mSDsluCounter, 1837 mSDsCounter, 0 mSdLazyCounter, 1458 mSolverCounterSat, 815 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1423 SdHoareTripleChecker+Valid, 2537 SdHoareTripleChecker+Invalid, 2274 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 815 IncrementalHoareTripleChecker+Valid, 1458 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2022-07-20 00:38:49,450 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1423 Valid, 2537 Invalid, 2274 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [815 Valid, 1458 Invalid, 1 Unknown, 0 Unchecked, 4.6s Time] [2022-07-20 00:38:49,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15964 states. [2022-07-20 00:38:49,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15964 to 14074. [2022-07-20 00:38:49,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14074 states, 11128 states have (on average 1.3880301941049604) internal successors, (15446), 11246 states have internal predecessors, (15446), 2183 states have call successors, (2183), 787 states have call predecessors, (2183), 762 states have return successors, (2198), 2124 states have call predecessors, (2198), 2170 states have call successors, (2198) [2022-07-20 00:38:50,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14074 states to 14074 states and 19827 transitions. [2022-07-20 00:38:50,045 INFO L78 Accepts]: Start accepts. Automaton has 14074 states and 19827 transitions. Word has length 123 [2022-07-20 00:38:50,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 00:38:50,046 INFO L495 AbstractCegarLoop]: Abstraction has 14074 states and 19827 transitions. [2022-07-20 00:38:50,046 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.666666666666666) internal successors, (87), 4 states have internal predecessors, (87), 2 states have call successors, (13), 6 states have call predecessors, (13), 2 states have return successors, (10), 3 states have call predecessors, (10), 2 states have call successors, (10) [2022-07-20 00:38:50,046 INFO L276 IsEmpty]: Start isEmpty. Operand 14074 states and 19827 transitions. [2022-07-20 00:38:50,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2022-07-20 00:38:50,052 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 00:38:50,052 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 00:38:50,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-20 00:38:50,052 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 00:38:50,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 00:38:50,053 INFO L85 PathProgramCache]: Analyzing trace with hash -1039882275, now seen corresponding path program 1 times [2022-07-20 00:38:50,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 00:38:50,053 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1087530122] [2022-07-20 00:38:50,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 00:38:50,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 00:38:50,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:38:50,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-20 00:38:50,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:38:50,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 00:38:50,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:38:50,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-20 00:38:50,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:38:50,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 00:38:50,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:38:50,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-20 00:38:50,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:38:50,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-20 00:38:50,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:38:50,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 00:38:50,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:38:50,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-20 00:38:50,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:38:50,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-20 00:38:50,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:38:50,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-07-20 00:38:50,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:38:50,543 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-07-20 00:38:50,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 00:38:50,544 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1087530122] [2022-07-20 00:38:50,544 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1087530122] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 00:38:50,544 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 00:38:50,544 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-20 00:38:50,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272362323] [2022-07-20 00:38:50,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 00:38:50,545 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-20 00:38:50,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 00:38:50,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-20 00:38:50,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-07-20 00:38:50,546 INFO L87 Difference]: Start difference. First operand 14074 states and 19827 transitions. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 4 states have internal predecessors, (85), 2 states have call successors, (13), 6 states have call predecessors, (13), 2 states have return successors, (10), 3 states have call predecessors, (10), 2 states have call successors, (10) [2022-07-20 00:38:53,839 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 [] [2022-07-20 00:38:55,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 00:38:55,879 INFO L93 Difference]: Finished difference Result 30035 states and 42731 transitions. [2022-07-20 00:38:55,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-20 00:38:55,879 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 4 states have internal predecessors, (85), 2 states have call successors, (13), 6 states have call predecessors, (13), 2 states have return successors, (10), 3 states have call predecessors, (10), 2 states have call successors, (10) Word has length 120 [2022-07-20 00:38:55,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 00:38:55,947 INFO L225 Difference]: With dead ends: 30035 [2022-07-20 00:38:55,947 INFO L226 Difference]: Without dead ends: 15964 [2022-07-20 00:38:55,984 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=202, Unknown=0, NotChecked=0, Total=272 [2022-07-20 00:38:55,985 INFO L413 NwaCegarLoop]: 710 mSDtfsCounter, 1368 mSDsluCounter, 1832 mSDsCounter, 0 mSdLazyCounter, 1495 mSolverCounterSat, 814 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1404 SdHoareTripleChecker+Valid, 2542 SdHoareTripleChecker+Invalid, 2310 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 814 IncrementalHoareTripleChecker+Valid, 1495 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2022-07-20 00:38:55,986 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1404 Valid, 2542 Invalid, 2310 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [814 Valid, 1495 Invalid, 1 Unknown, 0 Unchecked, 4.8s Time] [2022-07-20 00:38:55,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15964 states. [2022-07-20 00:38:56,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15964 to 14074. [2022-07-20 00:38:56,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14074 states, 11128 states have (on average 1.3876707404744788) internal successors, (15442), 11246 states have internal predecessors, (15442), 2183 states have call successors, (2183), 787 states have call predecessors, (2183), 762 states have return successors, (2198), 2124 states have call predecessors, (2198), 2170 states have call successors, (2198) [2022-07-20 00:38:56,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14074 states to 14074 states and 19823 transitions. [2022-07-20 00:38:56,476 INFO L78 Accepts]: Start accepts. Automaton has 14074 states and 19823 transitions. Word has length 120 [2022-07-20 00:38:56,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 00:38:56,477 INFO L495 AbstractCegarLoop]: Abstraction has 14074 states and 19823 transitions. [2022-07-20 00:38:56,477 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 4 states have internal predecessors, (85), 2 states have call successors, (13), 6 states have call predecessors, (13), 2 states have return successors, (10), 3 states have call predecessors, (10), 2 states have call successors, (10) [2022-07-20 00:38:56,477 INFO L276 IsEmpty]: Start isEmpty. Operand 14074 states and 19823 transitions. [2022-07-20 00:38:56,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2022-07-20 00:38:56,483 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 00:38:56,483 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 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] [2022-07-20 00:38:56,483 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-20 00:38:56,483 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 00:38:56,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 00:38:56,484 INFO L85 PathProgramCache]: Analyzing trace with hash 580686427, now seen corresponding path program 1 times [2022-07-20 00:38:56,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 00:38:56,484 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1573397557] [2022-07-20 00:38:56,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 00:38:56,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 00:38:56,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:38:56,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-20 00:38:56,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:38:56,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 00:38:56,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:38:56,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-20 00:38:56,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:38:56,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 00:38:56,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:38:56,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-20 00:38:56,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:38:57,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-20 00:38:57,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:38:57,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 00:38:57,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:38:57,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-20 00:38:57,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:38:57,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-20 00:38:57,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:38:57,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-07-20 00:38:57,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:38:57,019 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-20 00:38:57,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 00:38:57,020 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1573397557] [2022-07-20 00:38:57,022 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1573397557] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-20 00:38:57,022 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1680489841] [2022-07-20 00:38:57,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 00:38:57,022 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-20 00:38:57,022 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-20 00:38:57,024 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) [2022-07-20 00:38:57,025 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-20 00:38:58,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:38:58,651 INFO L263 TraceCheckSpWp]: Trace formula consists of 12383 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-20 00:38:58,669 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 00:38:58,775 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-20 00:38:58,775 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-20 00:38:58,775 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1680489841] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 00:38:58,775 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-20 00:38:58,775 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 14 [2022-07-20 00:38:58,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404325980] [2022-07-20 00:38:58,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 00:38:58,776 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-20 00:38:58,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 00:38:58,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-20 00:38:58,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2022-07-20 00:38:58,777 INFO L87 Difference]: Start difference. First operand 14074 states and 19823 transitions. Second operand has 8 states, 8 states have (on average 11.0) internal successors, (88), 8 states have internal predecessors, (88), 3 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-07-20 00:38:59,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 00:38:59,917 INFO L93 Difference]: Finished difference Result 33201 states and 47327 transitions. [2022-07-20 00:38:59,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-20 00:38:59,918 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.0) internal successors, (88), 8 states have internal predecessors, (88), 3 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 120 [2022-07-20 00:38:59,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 00:38:59,980 INFO L225 Difference]: With dead ends: 33201 [2022-07-20 00:38:59,980 INFO L226 Difference]: Without dead ends: 19074 [2022-07-20 00:39:00,022 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=251, Unknown=0, NotChecked=0, Total=306 [2022-07-20 00:39:00,023 INFO L413 NwaCegarLoop]: 983 mSDtfsCounter, 297 mSDsluCounter, 5642 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 315 SdHoareTripleChecker+Valid, 6625 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-20 00:39:00,023 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [315 Valid, 6625 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-20 00:39:00,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19074 states. [2022-07-20 00:39:00,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19074 to 14078. [2022-07-20 00:39:00,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14078 states, 11132 states have (on average 1.3837585339561624) internal successors, (15404), 11250 states have internal predecessors, (15404), 2183 states have call successors, (2183), 787 states have call predecessors, (2183), 762 states have return successors, (2198), 2124 states have call predecessors, (2198), 2170 states have call successors, (2198) [2022-07-20 00:39:00,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14078 states to 14078 states and 19785 transitions. [2022-07-20 00:39:00,746 INFO L78 Accepts]: Start accepts. Automaton has 14078 states and 19785 transitions. Word has length 120 [2022-07-20 00:39:00,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 00:39:00,747 INFO L495 AbstractCegarLoop]: Abstraction has 14078 states and 19785 transitions. [2022-07-20 00:39:00,748 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.0) internal successors, (88), 8 states have internal predecessors, (88), 3 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-07-20 00:39:00,748 INFO L276 IsEmpty]: Start isEmpty. Operand 14078 states and 19785 transitions. [2022-07-20 00:39:00,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-07-20 00:39:00,753 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 00:39:00,753 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 00:39:00,789 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-07-20 00:39:00,959 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,SelfDestructingSolverStorable15 [2022-07-20 00:39:00,959 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 00:39:00,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 00:39:00,960 INFO L85 PathProgramCache]: Analyzing trace with hash 559133422, now seen corresponding path program 1 times [2022-07-20 00:39:00,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 00:39:00,960 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1114254415] [2022-07-20 00:39:00,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 00:39:00,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 00:39:01,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:39:01,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-20 00:39:01,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:39:01,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 00:39:01,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:39:01,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-20 00:39:01,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:39:01,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 00:39:01,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:39:01,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-20 00:39:01,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:39:01,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 00:39:01,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:39:01,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-20 00:39:01,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:39:01,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-07-20 00:39:01,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:39:01,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 00:39:01,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:39:01,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-20 00:39:01,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:39:01,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-20 00:39:01,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:39:01,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-20 00:39:01,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:39:01,403 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-07-20 00:39:01,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 00:39:01,403 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1114254415] [2022-07-20 00:39:01,404 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1114254415] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 00:39:01,404 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 00:39:01,404 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-20 00:39:01,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137639959] [2022-07-20 00:39:01,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 00:39:01,405 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-20 00:39:01,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 00:39:01,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-20 00:39:01,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-07-20 00:39:01,406 INFO L87 Difference]: Start difference. First operand 14078 states and 19785 transitions. Second operand has 8 states, 8 states have (on average 12.875) internal successors, (103), 4 states have internal predecessors, (103), 2 states have call successors, (12), 6 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-20 00:39:05,415 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 [] [2022-07-20 00:39:06,518 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 00:39:09,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 00:39:09,121 INFO L93 Difference]: Finished difference Result 41426 states and 60219 transitions. [2022-07-20 00:39:09,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-20 00:39:09,122 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.875) internal successors, (103), 4 states have internal predecessors, (103), 2 states have call successors, (12), 6 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 145 [2022-07-20 00:39:09,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 00:39:09,214 INFO L225 Difference]: With dead ends: 41426 [2022-07-20 00:39:09,214 INFO L226 Difference]: Without dead ends: 27351 [2022-07-20 00:39:09,250 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2022-07-20 00:39:09,252 INFO L413 NwaCegarLoop]: 984 mSDtfsCounter, 1105 mSDsluCounter, 3263 mSDsCounter, 0 mSdLazyCounter, 1972 mSolverCounterSat, 388 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1172 SdHoareTripleChecker+Valid, 4247 SdHoareTripleChecker+Invalid, 2361 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 388 IncrementalHoareTripleChecker+Valid, 1972 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.0s IncrementalHoareTripleChecker+Time [2022-07-20 00:39:09,252 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1172 Valid, 4247 Invalid, 2361 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [388 Valid, 1972 Invalid, 1 Unknown, 0 Unchecked, 7.0s Time] [2022-07-20 00:39:09,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27351 states. [2022-07-20 00:39:09,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27351 to 14036. [2022-07-20 00:39:09,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14036 states, 11090 states have (on average 1.3801623083859333) internal successors, (15306), 11208 states have internal predecessors, (15306), 2183 states have call successors, (2183), 787 states have call predecessors, (2183), 762 states have return successors, (2198), 2124 states have call predecessors, (2198), 2170 states have call successors, (2198) [2022-07-20 00:39:09,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14036 states to 14036 states and 19687 transitions. [2022-07-20 00:39:09,791 INFO L78 Accepts]: Start accepts. Automaton has 14036 states and 19687 transitions. Word has length 145 [2022-07-20 00:39:09,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 00:39:09,791 INFO L495 AbstractCegarLoop]: Abstraction has 14036 states and 19687 transitions. [2022-07-20 00:39:09,791 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.875) internal successors, (103), 4 states have internal predecessors, (103), 2 states have call successors, (12), 6 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-20 00:39:09,791 INFO L276 IsEmpty]: Start isEmpty. Operand 14036 states and 19687 transitions. [2022-07-20 00:39:09,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2022-07-20 00:39:09,797 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 00:39:09,797 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 00:39:09,797 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-20 00:39:09,797 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 00:39:09,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 00:39:09,798 INFO L85 PathProgramCache]: Analyzing trace with hash 823178437, now seen corresponding path program 1 times [2022-07-20 00:39:09,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 00:39:09,798 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [725785846] [2022-07-20 00:39:09,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 00:39:09,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 00:39:10,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:39:10,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-20 00:39:10,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:39:10,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 00:39:10,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:39:10,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-20 00:39:10,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:39:10,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 00:39:10,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:39:10,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-20 00:39:10,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:39:10,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 00:39:10,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:39:10,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-20 00:39:10,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:39:10,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 00:39:10,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:39:10,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-20 00:39:10,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:39:10,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-07-20 00:39:10,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:39:10,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 00:39:10,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:39:10,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-20 00:39:10,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:39:10,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-20 00:39:10,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:39:10,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-07-20 00:39:10,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:39:10,278 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-07-20 00:39:10,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 00:39:10,278 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [725785846] [2022-07-20 00:39:10,278 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [725785846] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 00:39:10,278 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 00:39:10,278 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-20 00:39:10,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383007494] [2022-07-20 00:39:10,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 00:39:10,279 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-20 00:39:10,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 00:39:10,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-20 00:39:10,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-07-20 00:39:10,280 INFO L87 Difference]: Start difference. First operand 14036 states and 19687 transitions. Second operand has 8 states, 8 states have (on average 12.625) internal successors, (101), 4 states have internal predecessors, (101), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-20 00:39:13,611 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 [] [2022-07-20 00:39:16,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 00:39:16,005 INFO L93 Difference]: Finished difference Result 42564 states and 61847 transitions. [2022-07-20 00:39:16,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-20 00:39:16,006 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.625) internal successors, (101), 4 states have internal predecessors, (101), 2 states have call successors, (14), 6 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 148 [2022-07-20 00:39:16,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 00:39:16,090 INFO L225 Difference]: With dead ends: 42564 [2022-07-20 00:39:16,091 INFO L226 Difference]: Without dead ends: 28531 [2022-07-20 00:39:16,132 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2022-07-20 00:39:16,132 INFO L413 NwaCegarLoop]: 1447 mSDtfsCounter, 1161 mSDsluCounter, 4293 mSDsCounter, 0 mSdLazyCounter, 1665 mSolverCounterSat, 618 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1231 SdHoareTripleChecker+Valid, 5740 SdHoareTripleChecker+Invalid, 2284 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 618 IncrementalHoareTripleChecker+Valid, 1665 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2022-07-20 00:39:16,132 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1231 Valid, 5740 Invalid, 2284 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [618 Valid, 1665 Invalid, 1 Unknown, 0 Unchecked, 5.1s Time] [2022-07-20 00:39:16,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28531 states. [2022-07-20 00:39:16,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28531 to 14064. [2022-07-20 00:39:16,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14064 states, 11118 states have (on average 1.379204892966361) internal successors, (15334), 11236 states have internal predecessors, (15334), 2183 states have call successors, (2183), 787 states have call predecessors, (2183), 762 states have return successors, (2198), 2124 states have call predecessors, (2198), 2170 states have call successors, (2198) [2022-07-20 00:39:16,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14064 states to 14064 states and 19715 transitions. [2022-07-20 00:39:16,808 INFO L78 Accepts]: Start accepts. Automaton has 14064 states and 19715 transitions. Word has length 148 [2022-07-20 00:39:16,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 00:39:16,809 INFO L495 AbstractCegarLoop]: Abstraction has 14064 states and 19715 transitions. [2022-07-20 00:39:16,809 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.625) internal successors, (101), 4 states have internal predecessors, (101), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-20 00:39:16,809 INFO L276 IsEmpty]: Start isEmpty. Operand 14064 states and 19715 transitions. [2022-07-20 00:39:16,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2022-07-20 00:39:16,814 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 00:39:16,814 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 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] [2022-07-20 00:39:16,815 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-20 00:39:16,815 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 00:39:16,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 00:39:16,815 INFO L85 PathProgramCache]: Analyzing trace with hash -1681591430, now seen corresponding path program 1 times [2022-07-20 00:39:16,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 00:39:16,816 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1939511272] [2022-07-20 00:39:16,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 00:39:16,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 00:39:17,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:39:17,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-20 00:39:17,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:39:17,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 00:39:17,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:39:17,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-20 00:39:17,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:39:17,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 00:39:17,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:39:17,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-20 00:39:17,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:39:17,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 00:39:17,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:39:17,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-20 00:39:17,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:39:17,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 00:39:17,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:39:17,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-20 00:39:17,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:39:17,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-07-20 00:39:17,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:39:17,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 00:39:17,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:39:17,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-20 00:39:17,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:39:17,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-20 00:39:17,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:39:17,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-07-20 00:39:17,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:39:17,238 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-20 00:39:17,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 00:39:17,238 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1939511272] [2022-07-20 00:39:17,238 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1939511272] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 00:39:17,238 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 00:39:17,238 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-20 00:39:17,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526844944] [2022-07-20 00:39:17,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 00:39:17,239 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-20 00:39:17,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 00:39:17,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-20 00:39:17,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-20 00:39:17,240 INFO L87 Difference]: Start difference. First operand 14064 states and 19715 transitions. Second operand has 7 states, 7 states have (on average 14.714285714285714) internal successors, (103), 3 states have internal predecessors, (103), 3 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-07-20 00:39:20,781 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 00:39:23,001 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 00:39:25,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 00:39:25,706 INFO L93 Difference]: Finished difference Result 45458 states and 64413 transitions. [2022-07-20 00:39:25,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-20 00:39:25,707 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.714285714285714) internal successors, (103), 3 states have internal predecessors, (103), 3 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 148 [2022-07-20 00:39:25,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 00:39:25,796 INFO L225 Difference]: With dead ends: 45458 [2022-07-20 00:39:25,796 INFO L226 Difference]: Without dead ends: 31397 [2022-07-20 00:39:25,829 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2022-07-20 00:39:25,829 INFO L413 NwaCegarLoop]: 768 mSDtfsCounter, 2035 mSDsluCounter, 1499 mSDsCounter, 0 mSdLazyCounter, 1350 mSolverCounterSat, 1378 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2108 SdHoareTripleChecker+Valid, 2267 SdHoareTripleChecker+Invalid, 2730 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1378 IncrementalHoareTripleChecker+Valid, 1350 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.2s IncrementalHoareTripleChecker+Time [2022-07-20 00:39:25,830 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2108 Valid, 2267 Invalid, 2730 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1378 Valid, 1350 Invalid, 2 Unknown, 0 Unchecked, 7.2s Time] [2022-07-20 00:39:25,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31397 states. [2022-07-20 00:39:26,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31397 to 27546. [2022-07-20 00:39:26,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27546 states, 21778 states have (on average 1.3768941133253743) internal successors, (29986), 22024 states have internal predecessors, (29986), 4245 states have call successors, (4245), 1569 states have call predecessors, (4245), 1522 states have return successors, (4282), 4120 states have call predecessors, (4282), 4226 states have call successors, (4282) [2022-07-20 00:39:26,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27546 states to 27546 states and 38513 transitions. [2022-07-20 00:39:26,914 INFO L78 Accepts]: Start accepts. Automaton has 27546 states and 38513 transitions. Word has length 148 [2022-07-20 00:39:26,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 00:39:26,915 INFO L495 AbstractCegarLoop]: Abstraction has 27546 states and 38513 transitions. [2022-07-20 00:39:26,915 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.714285714285714) internal successors, (103), 3 states have internal predecessors, (103), 3 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-07-20 00:39:26,915 INFO L276 IsEmpty]: Start isEmpty. Operand 27546 states and 38513 transitions. [2022-07-20 00:39:26,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2022-07-20 00:39:26,922 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 00:39:26,922 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 00:39:26,922 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-20 00:39:26,922 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 00:39:26,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 00:39:26,923 INFO L85 PathProgramCache]: Analyzing trace with hash 606760287, now seen corresponding path program 1 times [2022-07-20 00:39:26,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 00:39:26,923 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1283453488] [2022-07-20 00:39:26,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 00:39:26,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 00:39:27,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:39:27,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-20 00:39:27,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:39:27,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 00:39:27,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:39:27,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-20 00:39:27,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:39:27,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 00:39:27,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:39:27,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-20 00:39:27,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:39:27,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 00:39:27,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:39:27,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-20 00:39:27,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:39:27,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-20 00:39:27,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:39:27,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-07-20 00:39:27,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:39:27,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-07-20 00:39:27,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:39:27,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 00:39:27,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:39:27,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-20 00:39:27,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:39:27,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 00:39:27,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:39:27,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-07-20 00:39:27,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:39:27,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-07-20 00:39:27,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:39:27,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-07-20 00:39:27,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:39:27,393 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2022-07-20 00:39:27,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 00:39:27,393 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1283453488] [2022-07-20 00:39:27,394 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1283453488] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 00:39:27,394 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 00:39:27,394 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-20 00:39:27,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772587711] [2022-07-20 00:39:27,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 00:39:27,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-20 00:39:27,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 00:39:27,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-20 00:39:27,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-07-20 00:39:27,396 INFO L87 Difference]: Start difference. First operand 27546 states and 38513 transitions. Second operand has 8 states, 8 states have (on average 13.875) internal successors, (111), 3 states have internal predecessors, (111), 2 states have call successors, (19), 7 states have call predecessors, (19), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-07-20 00:39:30,701 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 00:39:32,741 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 00:39:34,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 00:39:34,638 INFO L93 Difference]: Finished difference Result 46673 states and 64935 transitions. [2022-07-20 00:39:34,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-20 00:39:34,639 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.875) internal successors, (111), 3 states have internal predecessors, (111), 2 states have call successors, (19), 7 states have call predecessors, (19), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 159 [2022-07-20 00:39:34,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 00:39:34,690 INFO L225 Difference]: With dead ends: 46673 [2022-07-20 00:39:34,690 INFO L226 Difference]: Without dead ends: 19130 [2022-07-20 00:39:34,739 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2022-07-20 00:39:34,740 INFO L413 NwaCegarLoop]: 694 mSDtfsCounter, 1273 mSDsluCounter, 1368 mSDsCounter, 0 mSdLazyCounter, 906 mSolverCounterSat, 695 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1311 SdHoareTripleChecker+Valid, 2062 SdHoareTripleChecker+Invalid, 1603 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 695 IncrementalHoareTripleChecker+Valid, 906 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time [2022-07-20 00:39:34,740 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1311 Valid, 2062 Invalid, 1603 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [695 Valid, 906 Invalid, 2 Unknown, 0 Unchecked, 6.4s Time] [2022-07-20 00:39:34,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19130 states. [2022-07-20 00:39:35,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19130 to 12295. [2022-07-20 00:39:35,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12295 states, 9689 states have (on average 1.394984002477036) internal successors, (13516), 9809 states have internal predecessors, (13516), 1931 states have call successors, (1931), 699 states have call predecessors, (1931), 674 states have return successors, (1946), 1870 states have call predecessors, (1946), 1918 states have call successors, (1946) [2022-07-20 00:39:35,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12295 states to 12295 states and 17393 transitions. [2022-07-20 00:39:35,434 INFO L78 Accepts]: Start accepts. Automaton has 12295 states and 17393 transitions. Word has length 159 [2022-07-20 00:39:35,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 00:39:35,435 INFO L495 AbstractCegarLoop]: Abstraction has 12295 states and 17393 transitions. [2022-07-20 00:39:35,435 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.875) internal successors, (111), 3 states have internal predecessors, (111), 2 states have call successors, (19), 7 states have call predecessors, (19), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-07-20 00:39:35,435 INFO L276 IsEmpty]: Start isEmpty. Operand 12295 states and 17393 transitions. [2022-07-20 00:39:35,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2022-07-20 00:39:35,442 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 00:39:35,442 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, 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] [2022-07-20 00:39:35,443 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-20 00:39:35,443 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 00:39:35,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 00:39:35,443 INFO L85 PathProgramCache]: Analyzing trace with hash 145976228, now seen corresponding path program 1 times [2022-07-20 00:39:35,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 00:39:35,444 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [72185541] [2022-07-20 00:39:35,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 00:39:35,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 00:39:35,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:39:35,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-20 00:39:35,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:39:35,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 00:39:35,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:39:35,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-20 00:39:35,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:39:35,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 00:39:35,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:39:35,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-20 00:39:35,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:39:35,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 00:39:35,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:39:35,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-20 00:39:35,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:39:35,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 00:39:35,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:39:35,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-20 00:39:35,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:39:35,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 00:39:35,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:39:35,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-20 00:39:35,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:39:35,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-07-20 00:39:35,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:39:35,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 00:39:35,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:39:35,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-20 00:39:35,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:39:35,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-20 00:39:35,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:39:35,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-07-20 00:39:35,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:39:35,898 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-07-20 00:39:35,898 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 00:39:35,899 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [72185541] [2022-07-20 00:39:35,900 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [72185541] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-20 00:39:35,900 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [570615775] [2022-07-20 00:39:35,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 00:39:35,900 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-20 00:39:35,900 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-20 00:39:35,902 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) [2022-07-20 00:39:35,903 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-20 00:39:37,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:39:37,411 INFO L263 TraceCheckSpWp]: Trace formula consists of 12544 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-20 00:39:37,422 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 00:39:37,465 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-07-20 00:39:37,466 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-20 00:39:37,466 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [570615775] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 00:39:37,466 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-20 00:39:37,466 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 12 [2022-07-20 00:39:37,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794191910] [2022-07-20 00:39:37,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 00:39:37,467 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-20 00:39:37,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 00:39:37,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-20 00:39:37,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2022-07-20 00:39:37,468 INFO L87 Difference]: Start difference. First operand 12295 states and 17393 transitions. Second operand has 6 states, 6 states have (on average 18.5) internal successors, (111), 6 states have internal predecessors, (111), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-07-20 00:39:38,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 00:39:38,148 INFO L93 Difference]: Finished difference Result 24587 states and 34779 transitions. [2022-07-20 00:39:38,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-20 00:39:38,149 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.5) internal successors, (111), 6 states have internal predecessors, (111), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 166 [2022-07-20 00:39:38,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 00:39:38,177 INFO L225 Difference]: With dead ends: 24587 [2022-07-20 00:39:38,177 INFO L226 Difference]: Without dead ends: 12302 [2022-07-20 00:39:38,200 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 191 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2022-07-20 00:39:38,201 INFO L413 NwaCegarLoop]: 786 mSDtfsCounter, 27 mSDsluCounter, 3092 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 3878 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-20 00:39:38,201 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 3878 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-20 00:39:38,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12302 states. [2022-07-20 00:39:38,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12302 to 12197. [2022-07-20 00:39:38,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12197 states, 9607 states have (on average 1.3954408243988758) internal successors, (13406), 9729 states have internal predecessors, (13406), 1922 states have call successors, (1922), 692 states have call predecessors, (1922), 667 states have return successors, (1937), 1859 states have call predecessors, (1937), 1909 states have call successors, (1937) [2022-07-20 00:39:38,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12197 states to 12197 states and 17265 transitions. [2022-07-20 00:39:38,803 INFO L78 Accepts]: Start accepts. Automaton has 12197 states and 17265 transitions. Word has length 166 [2022-07-20 00:39:38,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 00:39:38,803 INFO L495 AbstractCegarLoop]: Abstraction has 12197 states and 17265 transitions. [2022-07-20 00:39:38,803 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.5) internal successors, (111), 6 states have internal predecessors, (111), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-07-20 00:39:38,803 INFO L276 IsEmpty]: Start isEmpty. Operand 12197 states and 17265 transitions. [2022-07-20 00:39:38,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-07-20 00:39:38,809 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 00:39:38,809 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, 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] [2022-07-20 00:39:38,860 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-20 00:39:39,023 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,SelfDestructingSolverStorable20 [2022-07-20 00:39:39,024 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 00:39:39,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 00:39:39,024 INFO L85 PathProgramCache]: Analyzing trace with hash -1326215580, now seen corresponding path program 1 times [2022-07-20 00:39:39,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 00:39:39,024 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [950374985] [2022-07-20 00:39:39,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 00:39:39,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 00:39:39,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:39:39,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-20 00:39:39,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:39:39,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 00:39:39,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:39:39,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-20 00:39:39,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:39:39,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 00:39:39,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:39:39,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-20 00:39:39,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:39:39,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 00:39:39,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:39:39,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-20 00:39:39,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:39:39,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-20 00:39:39,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:39:39,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 00:39:39,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:39:39,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-20 00:39:39,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:39:39,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-07-20 00:39:39,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:39:39,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 00:39:39,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:39:39,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-20 00:39:39,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:39:39,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-20 00:39:39,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:39:39,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-07-20 00:39:39,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:39:39,475 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2022-07-20 00:39:39,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 00:39:39,476 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [950374985] [2022-07-20 00:39:39,476 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [950374985] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-20 00:39:39,476 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [238931720] [2022-07-20 00:39:39,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 00:39:39,477 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-20 00:39:39,477 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-20 00:39:39,478 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-20 00:39:39,480 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-20 00:39:40,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:39:41,016 INFO L263 TraceCheckSpWp]: Trace formula consists of 12607 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-20 00:39:41,024 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 00:39:41,204 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2022-07-20 00:39:41,204 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-20 00:39:41,205 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [238931720] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 00:39:41,205 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-20 00:39:41,205 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 9 [2022-07-20 00:39:41,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359961715] [2022-07-20 00:39:41,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 00:39:41,206 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-20 00:39:41,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 00:39:41,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-20 00:39:41,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-07-20 00:39:41,207 INFO L87 Difference]: Start difference. First operand 12197 states and 17265 transitions. Second operand has 4 states, 4 states have (on average 29.5) internal successors, (118), 4 states have internal predecessors, (118), 3 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-07-20 00:39:42,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 00:39:42,755 INFO L93 Difference]: Finished difference Result 36554 states and 51747 transitions. [2022-07-20 00:39:42,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-20 00:39:42,756 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 29.5) internal successors, (118), 4 states have internal predecessors, (118), 3 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 168 [2022-07-20 00:39:42,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 00:39:42,853 INFO L225 Difference]: With dead ends: 36554 [2022-07-20 00:39:42,853 INFO L226 Difference]: Without dead ends: 36539 [2022-07-20 00:39:42,873 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-07-20 00:39:42,873 INFO L413 NwaCegarLoop]: 1525 mSDtfsCounter, 1507 mSDsluCounter, 1350 mSDsCounter, 0 mSdLazyCounter, 212 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1507 SdHoareTripleChecker+Valid, 2875 SdHoareTripleChecker+Invalid, 318 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-20 00:39:42,874 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1507 Valid, 2875 Invalid, 318 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 212 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-20 00:39:42,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36539 states. [2022-07-20 00:39:44,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36539 to 36477. [2022-07-20 00:39:44,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36477 states, 28731 states have (on average 1.3953569315373637) internal successors, (40090), 29089 states have internal predecessors, (40090), 5748 states have call successors, (5748), 2066 states have call predecessors, (5748), 1997 states have return successors, (5807), 5573 states have call predecessors, (5807), 5723 states have call successors, (5807) [2022-07-20 00:39:44,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36477 states to 36477 states and 51645 transitions. [2022-07-20 00:39:44,234 INFO L78 Accepts]: Start accepts. Automaton has 36477 states and 51645 transitions. Word has length 168 [2022-07-20 00:39:44,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 00:39:44,234 INFO L495 AbstractCegarLoop]: Abstraction has 36477 states and 51645 transitions. [2022-07-20 00:39:44,235 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.5) internal successors, (118), 4 states have internal predecessors, (118), 3 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-07-20 00:39:44,235 INFO L276 IsEmpty]: Start isEmpty. Operand 36477 states and 51645 transitions. [2022-07-20 00:39:44,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2022-07-20 00:39:44,244 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 00:39:44,244 INFO L195 NwaCegarLoop]: trace histogram [4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 00:39:44,277 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-20 00:39:44,444 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-20 00:39:44,445 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 00:39:44,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 00:39:44,445 INFO L85 PathProgramCache]: Analyzing trace with hash 508576284, now seen corresponding path program 1 times [2022-07-20 00:39:44,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 00:39:44,445 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1470464524] [2022-07-20 00:39:44,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 00:39:44,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 00:39:44,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:39:44,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-20 00:39:44,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:39:44,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 00:39:44,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:39:44,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-20 00:39:44,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:39:44,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 00:39:44,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:39:44,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-20 00:39:44,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:39:44,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 00:39:44,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:39:44,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-20 00:39:44,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:39:44,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-20 00:39:44,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:39:44,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 00:39:44,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:39:44,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-20 00:39:44,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:39:44,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-07-20 00:39:44,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:39:44,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-07-20 00:39:44,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:39:44,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-20 00:39:44,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:39:44,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 00:39:44,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:39:44,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-20 00:39:44,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:39:44,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 00:39:44,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:39:44,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-07-20 00:39:44,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:39:44,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-07-20 00:39:44,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:39:44,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-07-20 00:39:44,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:39:44,882 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-07-20 00:39:44,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 00:39:44,882 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1470464524] [2022-07-20 00:39:44,882 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1470464524] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 00:39:44,882 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 00:39:44,882 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-20 00:39:44,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742570243] [2022-07-20 00:39:44,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 00:39:44,883 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-20 00:39:44,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 00:39:44,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-20 00:39:44,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-07-20 00:39:44,884 INFO L87 Difference]: Start difference. First operand 36477 states and 51645 transitions. Second operand has 8 states, 8 states have (on average 14.0) internal successors, (112), 3 states have internal predecessors, (112), 2 states have call successors, (20), 7 states have call predecessors, (20), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2022-07-20 00:39:48,467 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 00:39:50,508 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 00:39:53,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 00:39:53,474 INFO L93 Difference]: Finished difference Result 78432 states and 112243 transitions. [2022-07-20 00:39:53,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-20 00:39:53,475 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.0) internal successors, (112), 3 states have internal predecessors, (112), 2 states have call successors, (20), 7 states have call predecessors, (20), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 176 [2022-07-20 00:39:53,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 00:39:53,633 INFO L225 Difference]: With dead ends: 78432 [2022-07-20 00:39:53,633 INFO L226 Difference]: Without dead ends: 41973 [2022-07-20 00:39:53,732 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2022-07-20 00:39:53,733 INFO L413 NwaCegarLoop]: 703 mSDtfsCounter, 479 mSDsluCounter, 1768 mSDsCounter, 0 mSdLazyCounter, 1337 mSolverCounterSat, 330 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 518 SdHoareTripleChecker+Valid, 2471 SdHoareTripleChecker+Invalid, 1669 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 330 IncrementalHoareTripleChecker+Valid, 1337 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time [2022-07-20 00:39:53,733 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [518 Valid, 2471 Invalid, 1669 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [330 Valid, 1337 Invalid, 2 Unknown, 0 Unchecked, 6.7s Time] [2022-07-20 00:39:53,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41973 states. [2022-07-20 00:39:55,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41973 to 36519. [2022-07-20 00:39:55,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36519 states, 28773 states have (on average 1.394779828311264) internal successors, (40132), 29131 states have internal predecessors, (40132), 5748 states have call successors, (5748), 2066 states have call predecessors, (5748), 1997 states have return successors, (5807), 5573 states have call predecessors, (5807), 5723 states have call successors, (5807) [2022-07-20 00:39:55,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36519 states to 36519 states and 51687 transitions. [2022-07-20 00:39:55,310 INFO L78 Accepts]: Start accepts. Automaton has 36519 states and 51687 transitions. Word has length 176 [2022-07-20 00:39:55,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 00:39:55,310 INFO L495 AbstractCegarLoop]: Abstraction has 36519 states and 51687 transitions. [2022-07-20 00:39:55,311 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.0) internal successors, (112), 3 states have internal predecessors, (112), 2 states have call successors, (20), 7 states have call predecessors, (20), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2022-07-20 00:39:55,311 INFO L276 IsEmpty]: Start isEmpty. Operand 36519 states and 51687 transitions. [2022-07-20 00:39:55,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2022-07-20 00:39:55,321 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 00:39:55,321 INFO L195 NwaCegarLoop]: trace histogram [4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 00:39:55,321 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-07-20 00:39:55,321 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 00:39:55,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 00:39:55,321 INFO L85 PathProgramCache]: Analyzing trace with hash -300770342, now seen corresponding path program 1 times [2022-07-20 00:39:55,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 00:39:55,322 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [739573124] [2022-07-20 00:39:55,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 00:39:55,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 00:39:55,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:39:55,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-20 00:39:55,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:39:55,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 00:39:55,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:39:55,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-20 00:39:55,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:39:55,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 00:39:55,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:39:55,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-20 00:39:55,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:39:55,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 00:39:55,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:39:55,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-20 00:39:55,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:39:55,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-20 00:39:55,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:39:55,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 00:39:55,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:39:55,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-20 00:39:55,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:39:55,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-07-20 00:39:55,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:39:55,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-07-20 00:39:55,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:39:55,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-20 00:39:55,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:39:55,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 00:39:55,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:39:55,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-20 00:39:55,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:39:55,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 00:39:55,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:39:55,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-07-20 00:39:55,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:39:55,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-07-20 00:39:55,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:39:55,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-07-20 00:39:55,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:39:55,785 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-07-20 00:39:55,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 00:39:55,786 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [739573124] [2022-07-20 00:39:55,786 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [739573124] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 00:39:55,786 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 00:39:55,786 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-20 00:39:55,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436102289] [2022-07-20 00:39:55,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 00:39:55,788 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-20 00:39:55,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 00:39:55,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-20 00:39:55,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-07-20 00:39:55,789 INFO L87 Difference]: Start difference. First operand 36519 states and 51687 transitions. Second operand has 8 states, 8 states have (on average 14.0) internal successors, (112), 3 states have internal predecessors, (112), 3 states have call successors, (20), 8 states have call predecessors, (20), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-07-20 00:39:59,421 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 [] [2022-07-20 00:40:03,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 00:40:03,368 INFO L93 Difference]: Finished difference Result 78476 states and 111992 transitions. [2022-07-20 00:40:03,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-20 00:40:03,368 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.0) internal successors, (112), 3 states have internal predecessors, (112), 3 states have call successors, (20), 8 states have call predecessors, (20), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 176 [2022-07-20 00:40:03,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 00:40:03,621 INFO L225 Difference]: With dead ends: 78476 [2022-07-20 00:40:03,622 INFO L226 Difference]: Without dead ends: 41975 [2022-07-20 00:40:03,719 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 41 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=82, Invalid=190, Unknown=0, NotChecked=0, Total=272 [2022-07-20 00:40:03,720 INFO L413 NwaCegarLoop]: 1158 mSDtfsCounter, 1409 mSDsluCounter, 1973 mSDsCounter, 0 mSdLazyCounter, 1503 mSolverCounterSat, 1054 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1462 SdHoareTripleChecker+Valid, 3131 SdHoareTripleChecker+Invalid, 2558 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1054 IncrementalHoareTripleChecker+Valid, 1503 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2022-07-20 00:40:03,720 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1462 Valid, 3131 Invalid, 2558 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1054 Valid, 1503 Invalid, 1 Unknown, 0 Unchecked, 5.6s Time] [2022-07-20 00:40:03,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41975 states. [2022-07-20 00:40:05,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41975 to 35846. [2022-07-20 00:40:05,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35846 states, 28303 states have (on average 1.394975797618627) internal successors, (39482), 28651 states have internal predecessors, (39482), 5592 states have call successors, (5592), 2009 states have call predecessors, (5592), 1950 states have return successors, (5502), 5437 states have call predecessors, (5502), 5502 states have call successors, (5502) [2022-07-20 00:40:05,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35846 states to 35846 states and 50576 transitions. [2022-07-20 00:40:05,428 INFO L78 Accepts]: Start accepts. Automaton has 35846 states and 50576 transitions. Word has length 176 [2022-07-20 00:40:05,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 00:40:05,429 INFO L495 AbstractCegarLoop]: Abstraction has 35846 states and 50576 transitions. [2022-07-20 00:40:05,429 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.0) internal successors, (112), 3 states have internal predecessors, (112), 3 states have call successors, (20), 8 states have call predecessors, (20), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-07-20 00:40:05,429 INFO L276 IsEmpty]: Start isEmpty. Operand 35846 states and 50576 transitions. [2022-07-20 00:40:05,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-07-20 00:40:05,441 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 00:40:05,441 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, 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] [2022-07-20 00:40:05,441 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-07-20 00:40:05,441 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 00:40:05,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 00:40:05,442 INFO L85 PathProgramCache]: Analyzing trace with hash 1860346325, now seen corresponding path program 1 times [2022-07-20 00:40:05,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 00:40:05,442 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2029385503] [2022-07-20 00:40:05,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 00:40:05,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 00:40:05,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:40:05,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-20 00:40:05,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:40:05,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 00:40:05,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:40:05,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-20 00:40:05,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:40:05,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 00:40:05,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:40:05,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-20 00:40:05,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:40:05,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 00:40:05,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:40:05,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-20 00:40:05,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:40:05,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-20 00:40:05,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:40:05,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 00:40:05,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:40:05,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-20 00:40:05,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:40:05,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-07-20 00:40:05,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:40:05,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 00:40:05,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:40:05,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-20 00:40:05,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:40:05,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-20 00:40:05,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:40:05,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-07-20 00:40:05,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:40:05,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 00:40:05,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:40:05,933 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2022-07-20 00:40:05,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 00:40:05,933 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2029385503] [2022-07-20 00:40:05,933 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2029385503] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 00:40:05,933 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 00:40:05,933 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-20 00:40:05,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084951950] [2022-07-20 00:40:05,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 00:40:05,935 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-20 00:40:05,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 00:40:05,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-20 00:40:05,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-20 00:40:05,936 INFO L87 Difference]: Start difference. First operand 35846 states and 50576 transitions. Second operand has 7 states, 7 states have (on average 16.285714285714285) internal successors, (114), 3 states have internal predecessors, (114), 3 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-07-20 00:40:09,435 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 [] [2022-07-20 00:40:11,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 00:40:11,761 INFO L93 Difference]: Finished difference Result 75599 states and 108075 transitions. [2022-07-20 00:40:11,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-20 00:40:11,761 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.285714285714285) internal successors, (114), 3 states have internal predecessors, (114), 3 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 179 [2022-07-20 00:40:11,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 00:40:11,894 INFO L225 Difference]: With dead ends: 75599 [2022-07-20 00:40:11,895 INFO L226 Difference]: Without dead ends: 37059 [2022-07-20 00:40:11,994 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2022-07-20 00:40:11,995 INFO L413 NwaCegarLoop]: 769 mSDtfsCounter, 1217 mSDsluCounter, 1171 mSDsCounter, 0 mSdLazyCounter, 753 mSolverCounterSat, 796 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1242 SdHoareTripleChecker+Valid, 1940 SdHoareTripleChecker+Invalid, 1550 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 796 IncrementalHoareTripleChecker+Valid, 753 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2022-07-20 00:40:11,995 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1242 Valid, 1940 Invalid, 1550 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [796 Valid, 753 Invalid, 1 Unknown, 0 Unchecked, 4.1s Time] [2022-07-20 00:40:12,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37059 states. [2022-07-20 00:40:12,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37059 to 15853. [2022-07-20 00:40:12,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15853 states, 12581 states have (on average 1.3948811700182815) internal successors, (17549), 12743 states have internal predecessors, (17549), 2463 states have call successors, (2463), 840 states have call predecessors, (2463), 808 states have return successors, (2412), 2386 states have call predecessors, (2412), 2412 states have call successors, (2412) [2022-07-20 00:40:12,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15853 states to 15853 states and 22424 transitions. [2022-07-20 00:40:13,003 INFO L78 Accepts]: Start accepts. Automaton has 15853 states and 22424 transitions. Word has length 179 [2022-07-20 00:40:13,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 00:40:13,004 INFO L495 AbstractCegarLoop]: Abstraction has 15853 states and 22424 transitions. [2022-07-20 00:40:13,004 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.285714285714285) internal successors, (114), 3 states have internal predecessors, (114), 3 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-07-20 00:40:13,004 INFO L276 IsEmpty]: Start isEmpty. Operand 15853 states and 22424 transitions. [2022-07-20 00:40:13,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2022-07-20 00:40:13,010 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 00:40:13,010 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 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, 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] [2022-07-20 00:40:13,010 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-07-20 00:40:13,010 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 00:40:13,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 00:40:13,011 INFO L85 PathProgramCache]: Analyzing trace with hash -1792407628, now seen corresponding path program 1 times [2022-07-20 00:40:13,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 00:40:13,011 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1323942092] [2022-07-20 00:40:13,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 00:40:13,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 00:40:13,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:40:13,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-20 00:40:13,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:40:13,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 00:40:13,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:40:13,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-20 00:40:13,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:40:13,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 00:40:13,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:40:13,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-20 00:40:13,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:40:13,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 00:40:13,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:40:13,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-20 00:40:13,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:40:13,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-20 00:40:13,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:40:13,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 00:40:13,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:40:13,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-20 00:40:13,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:40:13,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-07-20 00:40:13,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:40:13,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 00:40:13,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:40:13,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-20 00:40:13,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:40:13,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-20 00:40:13,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:40:13,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-07-20 00:40:13,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:40:13,453 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2022-07-20 00:40:13,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 00:40:13,453 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1323942092] [2022-07-20 00:40:13,453 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1323942092] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 00:40:13,453 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 00:40:13,453 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-20 00:40:13,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883847520] [2022-07-20 00:40:13,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 00:40:13,454 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-20 00:40:13,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 00:40:13,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-20 00:40:13,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-20 00:40:13,455 INFO L87 Difference]: Start difference. First operand 15853 states and 22424 transitions. Second operand has 7 states, 7 states have (on average 16.0) internal successors, (112), 3 states have internal predecessors, (112), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-20 00:40:17,097 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 00:40:19,149 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 00:40:21,742 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 [] [2022-07-20 00:40:25,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 00:40:25,455 INFO L93 Difference]: Finished difference Result 36922 states and 52975 transitions. [2022-07-20 00:40:25,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-20 00:40:25,455 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.0) internal successors, (112), 3 states have internal predecessors, (112), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 184 [2022-07-20 00:40:25,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 00:40:25,515 INFO L225 Difference]: With dead ends: 36922 [2022-07-20 00:40:25,515 INFO L226 Difference]: Without dead ends: 21291 [2022-07-20 00:40:25,541 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2022-07-20 00:40:25,542 INFO L413 NwaCegarLoop]: 1166 mSDtfsCounter, 969 mSDsluCounter, 2347 mSDsCounter, 0 mSdLazyCounter, 2226 mSolverCounterSat, 626 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1027 SdHoareTripleChecker+Valid, 3513 SdHoareTripleChecker+Invalid, 2855 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 626 IncrementalHoareTripleChecker+Valid, 2226 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.7s IncrementalHoareTripleChecker+Time [2022-07-20 00:40:25,542 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1027 Valid, 3513 Invalid, 2855 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [626 Valid, 2226 Invalid, 3 Unknown, 0 Unchecked, 10.7s Time] [2022-07-20 00:40:25,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21291 states. [2022-07-20 00:40:26,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21291 to 18238. [2022-07-20 00:40:26,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18238 states, 14489 states have (on average 1.3932638553385326) internal successors, (20187), 14672 states have internal predecessors, (20187), 2823 states have call successors, (2823), 960 states have call predecessors, (2823), 925 states have return successors, (2769), 2740 states have call predecessors, (2769), 2769 states have call successors, (2769) [2022-07-20 00:40:26,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18238 states to 18238 states and 25779 transitions. [2022-07-20 00:40:26,434 INFO L78 Accepts]: Start accepts. Automaton has 18238 states and 25779 transitions. Word has length 184 [2022-07-20 00:40:26,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 00:40:26,434 INFO L495 AbstractCegarLoop]: Abstraction has 18238 states and 25779 transitions. [2022-07-20 00:40:26,434 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.0) internal successors, (112), 3 states have internal predecessors, (112), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-20 00:40:26,434 INFO L276 IsEmpty]: Start isEmpty. Operand 18238 states and 25779 transitions. [2022-07-20 00:40:26,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2022-07-20 00:40:26,442 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 00:40:26,442 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 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, 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] [2022-07-20 00:40:26,442 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-07-20 00:40:26,443 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 00:40:26,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 00:40:26,443 INFO L85 PathProgramCache]: Analyzing trace with hash -538120027, now seen corresponding path program 1 times [2022-07-20 00:40:26,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 00:40:26,443 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [603511077] [2022-07-20 00:40:26,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 00:40:26,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 00:40:26,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:40:26,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-20 00:40:26,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:40:26,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 00:40:26,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:40:26,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-20 00:40:26,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:40:26,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 00:40:26,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:40:26,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-20 00:40:26,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:40:26,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 00:40:26,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:40:26,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-20 00:40:26,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:40:26,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-20 00:40:26,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:40:26,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 00:40:26,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:40:26,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-20 00:40:26,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:40:26,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-07-20 00:40:26,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:40:26,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 00:40:26,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:40:26,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-20 00:40:26,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:40:26,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-20 00:40:26,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:40:26,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2022-07-20 00:40:26,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:40:26,838 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2022-07-20 00:40:26,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 00:40:26,838 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [603511077] [2022-07-20 00:40:26,839 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [603511077] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 00:40:26,839 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 00:40:26,839 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-20 00:40:26,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192771634] [2022-07-20 00:40:26,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 00:40:26,840 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-20 00:40:26,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 00:40:26,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-20 00:40:26,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-20 00:40:26,840 INFO L87 Difference]: Start difference. First operand 18238 states and 25779 transitions. Second operand has 7 states, 7 states have (on average 16.0) internal successors, (112), 3 states have internal predecessors, (112), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-20 00:40:30,135 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 [] [2022-07-20 00:40:33,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 00:40:33,813 INFO L93 Difference]: Finished difference Result 42103 states and 60333 transitions. [2022-07-20 00:40:33,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-20 00:40:33,814 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.0) internal successors, (112), 3 states have internal predecessors, (112), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 188 [2022-07-20 00:40:33,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 00:40:33,881 INFO L225 Difference]: With dead ends: 42103 [2022-07-20 00:40:33,881 INFO L226 Difference]: Without dead ends: 24087 [2022-07-20 00:40:33,915 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2022-07-20 00:40:33,916 INFO L413 NwaCegarLoop]: 1177 mSDtfsCounter, 1070 mSDsluCounter, 1881 mSDsCounter, 0 mSdLazyCounter, 1732 mSolverCounterSat, 758 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1128 SdHoareTripleChecker+Valid, 3058 SdHoareTripleChecker+Invalid, 2491 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 758 IncrementalHoareTripleChecker+Valid, 1732 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2022-07-20 00:40:33,916 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1128 Valid, 3058 Invalid, 2491 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [758 Valid, 1732 Invalid, 1 Unknown, 0 Unchecked, 5.7s Time] [2022-07-20 00:40:33,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24087 states. [2022-07-20 00:40:34,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24087 to 20623. [2022-07-20 00:40:34,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20623 states, 16397 states have (on average 1.3920229310239678) internal successors, (22825), 16601 states have internal predecessors, (22825), 3183 states have call successors, (3183), 1080 states have call predecessors, (3183), 1042 states have return successors, (3126), 3094 states have call predecessors, (3126), 3126 states have call successors, (3126) [2022-07-20 00:40:34,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20623 states to 20623 states and 29134 transitions. [2022-07-20 00:40:34,967 INFO L78 Accepts]: Start accepts. Automaton has 20623 states and 29134 transitions. Word has length 188 [2022-07-20 00:40:34,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 00:40:34,968 INFO L495 AbstractCegarLoop]: Abstraction has 20623 states and 29134 transitions. [2022-07-20 00:40:34,968 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.0) internal successors, (112), 3 states have internal predecessors, (112), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-20 00:40:34,968 INFO L276 IsEmpty]: Start isEmpty. Operand 20623 states and 29134 transitions. [2022-07-20 00:40:34,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2022-07-20 00:40:34,974 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 00:40:34,974 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 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, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 00:40:34,974 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-07-20 00:40:34,974 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 00:40:34,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 00:40:34,975 INFO L85 PathProgramCache]: Analyzing trace with hash -2142147971, now seen corresponding path program 1 times [2022-07-20 00:40:34,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 00:40:34,975 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231725569] [2022-07-20 00:40:34,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 00:40:34,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 00:40:35,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:40:35,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-20 00:40:35,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:40:35,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 00:40:35,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:40:35,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-20 00:40:35,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:40:35,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 00:40:35,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:40:35,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-20 00:40:35,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:40:35,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 00:40:35,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:40:35,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-20 00:40:35,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:40:35,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-20 00:40:35,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:40:35,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 00:40:35,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:40:35,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-20 00:40:35,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:40:35,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-07-20 00:40:35,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:40:35,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 00:40:35,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:40:35,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-20 00:40:35,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:40:35,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-20 00:40:35,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:40:35,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-07-20 00:40:35,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:40:35,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 00:40:35,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:40:35,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2022-07-20 00:40:35,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:40:35,453 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-07-20 00:40:35,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 00:40:35,453 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [231725569] [2022-07-20 00:40:35,453 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [231725569] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 00:40:35,454 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 00:40:35,454 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-20 00:40:35,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435161841] [2022-07-20 00:40:35,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 00:40:35,455 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-20 00:40:35,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 00:40:35,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-20 00:40:35,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-20 00:40:35,455 INFO L87 Difference]: Start difference. First operand 20623 states and 29134 transitions. Second operand has 7 states, 7 states have (on average 18.428571428571427) internal successors, (129), 3 states have internal predecessors, (129), 3 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-07-20 00:40:39,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 00:40:39,900 INFO L93 Difference]: Finished difference Result 46768 states and 66605 transitions. [2022-07-20 00:40:39,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-20 00:40:39,900 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 18.428571428571427) internal successors, (129), 3 states have internal predecessors, (129), 3 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 191 [2022-07-20 00:40:39,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 00:40:39,969 INFO L225 Difference]: With dead ends: 46768 [2022-07-20 00:40:39,970 INFO L226 Difference]: Without dead ends: 26367 [2022-07-20 00:40:40,003 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2022-07-20 00:40:40,003 INFO L413 NwaCegarLoop]: 837 mSDtfsCounter, 1217 mSDsluCounter, 1515 mSDsCounter, 0 mSdLazyCounter, 849 mSolverCounterSat, 752 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1246 SdHoareTripleChecker+Valid, 2352 SdHoareTripleChecker+Invalid, 1601 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 752 IncrementalHoareTripleChecker+Valid, 849 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-07-20 00:40:40,004 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1246 Valid, 2352 Invalid, 1601 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [752 Valid, 849 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2022-07-20 00:40:40,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26367 states. [2022-07-20 00:40:40,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26367 to 22905. [2022-07-20 00:40:41,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22905 states, 18446 states have (on average 1.3882142469912175) internal successors, (25607), 18662 states have internal predecessors, (25607), 3304 states have call successors, (3304), 1196 states have call predecessors, (3304), 1154 states have return successors, (3235), 3199 states have call predecessors, (3235), 3235 states have call successors, (3235) [2022-07-20 00:40:41,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22905 states to 22905 states and 32146 transitions. [2022-07-20 00:40:41,057 INFO L78 Accepts]: Start accepts. Automaton has 22905 states and 32146 transitions. Word has length 191 [2022-07-20 00:40:41,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 00:40:41,057 INFO L495 AbstractCegarLoop]: Abstraction has 22905 states and 32146 transitions. [2022-07-20 00:40:41,057 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.428571428571427) internal successors, (129), 3 states have internal predecessors, (129), 3 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-07-20 00:40:41,057 INFO L276 IsEmpty]: Start isEmpty. Operand 22905 states and 32146 transitions. [2022-07-20 00:40:41,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2022-07-20 00:40:41,064 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 00:40:41,064 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 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, 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] [2022-07-20 00:40:41,064 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-07-20 00:40:41,064 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 00:40:41,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 00:40:41,064 INFO L85 PathProgramCache]: Analyzing trace with hash -361188191, now seen corresponding path program 1 times [2022-07-20 00:40:41,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 00:40:41,064 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [226263262] [2022-07-20 00:40:41,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 00:40:41,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 00:40:41,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:40:41,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-20 00:40:41,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:40:41,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 00:40:41,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:40:41,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-20 00:40:41,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:40:41,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 00:40:41,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:40:41,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-20 00:40:41,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:40:41,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 00:40:41,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:40:41,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-20 00:40:41,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:40:41,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-20 00:40:41,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:40:41,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 00:40:41,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:40:41,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-20 00:40:41,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:40:41,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-07-20 00:40:41,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:40:41,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 00:40:41,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:40:41,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-20 00:40:41,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:40:41,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-20 00:40:41,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:40:41,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2022-07-20 00:40:41,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:40:41,485 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2022-07-20 00:40:41,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 00:40:41,486 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [226263262] [2022-07-20 00:40:41,486 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [226263262] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 00:40:41,486 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 00:40:41,486 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-20 00:40:41,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490257394] [2022-07-20 00:40:41,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 00:40:41,487 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-20 00:40:41,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 00:40:41,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-20 00:40:41,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-20 00:40:41,488 INFO L87 Difference]: Start difference. First operand 22905 states and 32146 transitions. Second operand has 7 states, 7 states have (on average 16.428571428571427) internal successors, (115), 3 states have internal predecessors, (115), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-20 00:40:44,274 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 00:40:46,835 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 00:40:50,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 00:40:50,539 INFO L93 Difference]: Finished difference Result 52064 states and 74032 transitions. [2022-07-20 00:40:50,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-20 00:40:50,540 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.428571428571427) internal successors, (115), 3 states have internal predecessors, (115), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 192 [2022-07-20 00:40:50,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 00:40:50,607 INFO L225 Difference]: With dead ends: 52064 [2022-07-20 00:40:50,607 INFO L226 Difference]: Without dead ends: 29381 [2022-07-20 00:40:50,637 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2022-07-20 00:40:50,638 INFO L413 NwaCegarLoop]: 1203 mSDtfsCounter, 1153 mSDsluCounter, 1861 mSDsCounter, 0 mSdLazyCounter, 1767 mSolverCounterSat, 891 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1211 SdHoareTripleChecker+Valid, 3064 SdHoareTripleChecker+Invalid, 2659 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 891 IncrementalHoareTripleChecker+Valid, 1767 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.4s IncrementalHoareTripleChecker+Time [2022-07-20 00:40:50,642 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1211 Valid, 3064 Invalid, 2659 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [891 Valid, 1767 Invalid, 1 Unknown, 0 Unchecked, 7.4s Time] [2022-07-20 00:40:50,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29381 states. [2022-07-20 00:40:51,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29381 to 25506. [2022-07-20 00:40:51,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25506 states, 20548 states have (on average 1.3870449678800856) internal successors, (28501), 20785 states have internal predecessors, (28501), 3674 states have call successors, (3674), 1328 states have call predecessors, (3674), 1283 states have return successors, (3602), 3563 states have call predecessors, (3602), 3602 states have call successors, (3602) [2022-07-20 00:40:51,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25506 states to 25506 states and 35777 transitions. [2022-07-20 00:40:51,839 INFO L78 Accepts]: Start accepts. Automaton has 25506 states and 35777 transitions. Word has length 192 [2022-07-20 00:40:51,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 00:40:51,840 INFO L495 AbstractCegarLoop]: Abstraction has 25506 states and 35777 transitions. [2022-07-20 00:40:51,840 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.428571428571427) internal successors, (115), 3 states have internal predecessors, (115), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-20 00:40:51,840 INFO L276 IsEmpty]: Start isEmpty. Operand 25506 states and 35777 transitions. [2022-07-20 00:40:51,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-07-20 00:40:51,846 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 00:40:51,847 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 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, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 00:40:51,847 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-07-20 00:40:51,847 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 00:40:51,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 00:40:51,847 INFO L85 PathProgramCache]: Analyzing trace with hash -1119388370, now seen corresponding path program 1 times [2022-07-20 00:40:51,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 00:40:51,847 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [101065197] [2022-07-20 00:40:51,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 00:40:51,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 00:40:52,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:40:52,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-20 00:40:52,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:40:52,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 00:40:52,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:40:52,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-20 00:40:52,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:40:52,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 00:40:52,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:40:52,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-20 00:40:52,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:40:52,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 00:40:52,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:40:52,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-20 00:40:52,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:40:52,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-20 00:40:52,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:40:52,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 00:40:52,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:40:52,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-20 00:40:52,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:40:52,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-07-20 00:40:52,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:40:52,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 00:40:52,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:40:52,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-20 00:40:52,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:40:52,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-20 00:40:52,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:40:52,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-07-20 00:40:52,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:40:52,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 00:40:52,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:40:52,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2022-07-20 00:40:52,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:40:52,266 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 13 proven. 8 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-07-20 00:40:52,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 00:40:52,266 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [101065197] [2022-07-20 00:40:52,266 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [101065197] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-20 00:40:52,266 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [927705588] [2022-07-20 00:40:52,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 00:40:52,267 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-20 00:40:52,267 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-20 00:40:52,272 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-20 00:40:52,275 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-20 00:40:53,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:40:53,827 INFO L263 TraceCheckSpWp]: Trace formula consists of 12718 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-20 00:40:53,836 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 00:40:54,033 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2022-07-20 00:40:54,033 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-20 00:40:54,033 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [927705588] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 00:40:54,033 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-20 00:40:54,033 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [9] total 10 [2022-07-20 00:40:54,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622015821] [2022-07-20 00:40:54,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 00:40:54,034 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-20 00:40:54,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 00:40:54,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-20 00:40:54,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2022-07-20 00:40:54,035 INFO L87 Difference]: Start difference. First operand 25506 states and 35777 transitions. Second operand has 3 states, 3 states have (on average 43.0) internal successors, (129), 2 states have internal predecessors, (129), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-07-20 00:40:55,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 00:40:55,750 INFO L93 Difference]: Finished difference Result 64586 states and 90645 transitions. [2022-07-20 00:40:55,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-20 00:40:55,751 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.0) internal successors, (129), 2 states have internal predecessors, (129), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 190 [2022-07-20 00:40:55,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 00:40:55,833 INFO L225 Difference]: With dead ends: 64586 [2022-07-20 00:40:55,834 INFO L226 Difference]: Without dead ends: 39302 [2022-07-20 00:40:55,865 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 219 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2022-07-20 00:40:55,866 INFO L413 NwaCegarLoop]: 863 mSDtfsCounter, 624 mSDsluCounter, 657 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 624 SdHoareTripleChecker+Valid, 1520 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-20 00:40:55,866 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [624 Valid, 1520 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-20 00:40:55,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39302 states. [2022-07-20 00:40:57,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39302 to 37898. [2022-07-20 00:40:57,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37898 states, 30145 states have (on average 1.3812240835959528) internal successors, (41637), 30504 states have internal predecessors, (41637), 5774 states have call successors, (5774), 2021 states have call predecessors, (5774), 1978 states have return successors, (5700), 5663 states have call predecessors, (5700), 5700 states have call successors, (5700) [2022-07-20 00:40:57,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37898 states to 37898 states and 53111 transitions. [2022-07-20 00:40:57,644 INFO L78 Accepts]: Start accepts. Automaton has 37898 states and 53111 transitions. Word has length 190 [2022-07-20 00:40:57,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 00:40:57,645 INFO L495 AbstractCegarLoop]: Abstraction has 37898 states and 53111 transitions. [2022-07-20 00:40:57,645 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.0) internal successors, (129), 2 states have internal predecessors, (129), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-07-20 00:40:57,645 INFO L276 IsEmpty]: Start isEmpty. Operand 37898 states and 53111 transitions. [2022-07-20 00:40:57,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2022-07-20 00:40:57,651 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 00:40:57,652 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 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, 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] [2022-07-20 00:40:57,698 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-20 00:40:57,879 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-20 00:40:57,879 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 00:40:57,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 00:40:57,880 INFO L85 PathProgramCache]: Analyzing trace with hash 329528432, now seen corresponding path program 1 times [2022-07-20 00:40:57,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 00:40:57,880 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385605134] [2022-07-20 00:40:57,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 00:40:57,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 00:40:58,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:40:58,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-20 00:40:58,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:40:58,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 00:40:58,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:40:58,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-20 00:40:58,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:40:58,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 00:40:58,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:40:58,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-20 00:40:58,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:40:58,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 00:40:58,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:40:58,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-20 00:40:58,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:40:58,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-20 00:40:58,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:40:58,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 00:40:58,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:40:58,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-20 00:40:58,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:40:58,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-07-20 00:40:58,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:40:58,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 00:40:58,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:40:58,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-20 00:40:58,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:40:58,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-20 00:40:58,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:40:58,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2022-07-20 00:40:58,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:40:58,360 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2022-07-20 00:40:58,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 00:40:58,361 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385605134] [2022-07-20 00:40:58,361 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [385605134] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 00:40:58,361 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 00:40:58,361 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-20 00:40:58,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442557491] [2022-07-20 00:40:58,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 00:40:58,362 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-20 00:40:58,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 00:40:58,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-20 00:40:58,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-20 00:40:58,363 INFO L87 Difference]: Start difference. First operand 37898 states and 53111 transitions. Second operand has 7 states, 7 states have (on average 16.714285714285715) internal successors, (117), 3 states have internal predecessors, (117), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-20 00:41:01,829 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 00:41:04,538 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 00:41:09,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 00:41:09,169 INFO L93 Difference]: Finished difference Result 86682 states and 123101 transitions. [2022-07-20 00:41:09,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-20 00:41:09,170 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.714285714285715) internal successors, (117), 3 states have internal predecessors, (117), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 193 [2022-07-20 00:41:09,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 00:41:09,306 INFO L225 Difference]: With dead ends: 86682 [2022-07-20 00:41:09,306 INFO L226 Difference]: Without dead ends: 49006 [2022-07-20 00:41:09,367 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2022-07-20 00:41:09,368 INFO L413 NwaCegarLoop]: 1175 mSDtfsCounter, 1174 mSDsluCounter, 1858 mSDsCounter, 0 mSdLazyCounter, 1721 mSolverCounterSat, 905 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1232 SdHoareTripleChecker+Valid, 3033 SdHoareTripleChecker+Invalid, 2628 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 905 IncrementalHoareTripleChecker+Valid, 1721 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.0s IncrementalHoareTripleChecker+Time [2022-07-20 00:41:09,368 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1232 Valid, 3033 Invalid, 2628 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [905 Valid, 1721 Invalid, 2 Unknown, 0 Unchecked, 8.0s Time] [2022-07-20 00:41:09,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49006 states.