./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/heap-manipulation/bubble_sort_linux-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 574ddb4e 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/heap-manipulation/bubble_sort_linux-2.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-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 32bit --witnessprinter.graph.data.programhash 3b13662719be51a1d3330a7f40f7706daa8c7b2d4044bc92f854095c09c7c129 --- Real Ultimate output --- This is Ultimate 0.2.2-?-574ddb4 [2023-02-17 05:50:31,852 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-17 05:50:31,855 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-17 05:50:31,891 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-17 05:50:31,891 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-17 05:50:31,892 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-17 05:50:31,893 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-17 05:50:31,895 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-17 05:50:31,896 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-17 05:50:31,897 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-17 05:50:31,898 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-17 05:50:31,899 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-17 05:50:31,899 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-17 05:50:31,900 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-17 05:50:31,909 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-17 05:50:31,911 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-17 05:50:31,912 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-17 05:50:31,918 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-17 05:50:31,920 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-17 05:50:31,924 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-17 05:50:31,925 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-17 05:50:31,927 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-17 05:50:31,928 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-17 05:50:31,929 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-17 05:50:31,931 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-17 05:50:31,932 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-17 05:50:31,932 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-17 05:50:31,932 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-17 05:50:31,933 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-17 05:50:31,933 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-17 05:50:31,934 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-17 05:50:31,934 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-17 05:50:31,935 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-17 05:50:31,935 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-17 05:50:31,936 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-17 05:50:31,936 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-17 05:50:31,937 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-17 05:50:31,937 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-17 05:50:31,937 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-17 05:50:31,938 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-17 05:50:31,938 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-17 05:50:31,942 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-02-17 05:50:31,976 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-17 05:50:31,977 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-17 05:50:31,977 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-17 05:50:31,977 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-17 05:50:31,978 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-17 05:50:31,978 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-17 05:50:31,979 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-17 05:50:31,979 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-17 05:50:31,979 INFO L138 SettingsManager]: * Use SBE=true [2023-02-17 05:50:31,979 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-17 05:50:31,979 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-17 05:50:31,980 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-17 05:50:31,980 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-17 05:50:31,980 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-17 05:50:31,980 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-02-17 05:50:31,980 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-17 05:50:31,980 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-02-17 05:50:31,981 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-17 05:50:31,981 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-17 05:50:31,981 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-17 05:50:31,981 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-02-17 05:50:31,981 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-17 05:50:31,981 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-17 05:50:31,982 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-17 05:50:31,982 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-17 05:50:31,982 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-17 05:50:31,982 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-17 05:50:31,982 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-02-17 05:50:31,983 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-17 05:50:31,983 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-17 05:50:31,983 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-17 05:50:31,983 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-02-17 05:50:31,983 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-17 05:50:31,983 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-17 05:50:31,984 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-17 05:50:31,984 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3b13662719be51a1d3330a7f40f7706daa8c7b2d4044bc92f854095c09c7c129 [2023-02-17 05:50:32,192 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-17 05:50:32,215 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-17 05:50:32,217 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-17 05:50:32,218 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-17 05:50:32,219 INFO L275 PluginConnector]: CDTParser initialized [2023-02-17 05:50:32,220 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/heap-manipulation/bubble_sort_linux-2.i [2023-02-17 05:50:33,470 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-17 05:50:33,755 INFO L351 CDTParser]: Found 1 translation units. [2023-02-17 05:50:33,756 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/heap-manipulation/bubble_sort_linux-2.i [2023-02-17 05:50:33,787 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fe331d3e9/91c60050746a493d80aa67a68153cfbf/FLAG4f6585248 [2023-02-17 05:50:33,802 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fe331d3e9/91c60050746a493d80aa67a68153cfbf [2023-02-17 05:50:33,804 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-17 05:50:33,805 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-17 05:50:33,806 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-17 05:50:33,806 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-17 05:50:33,809 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-17 05:50:33,810 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.02 05:50:33" (1/1) ... [2023-02-17 05:50:33,811 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@77fcf663 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 05:50:33, skipping insertion in model container [2023-02-17 05:50:33,811 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.02 05:50:33" (1/1) ... [2023-02-17 05:50:33,819 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-17 05:50:33,863 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-17 05:50:34,178 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/heap-manipulation/bubble_sort_linux-2.i[33822,33835] [2023-02-17 05:50:34,219 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-17 05:50:34,229 INFO L203 MainTranslator]: Completed pre-run [2023-02-17 05:50:34,278 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/heap-manipulation/bubble_sort_linux-2.i[33822,33835] [2023-02-17 05:50:34,296 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-17 05:50:34,339 INFO L208 MainTranslator]: Completed translation [2023-02-17 05:50:34,340 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 05:50:34 WrapperNode [2023-02-17 05:50:34,340 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-17 05:50:34,341 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-17 05:50:34,342 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-17 05:50:34,342 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-17 05:50:34,347 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 05:50:34" (1/1) ... [2023-02-17 05:50:34,363 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 05:50:34" (1/1) ... [2023-02-17 05:50:34,392 INFO L138 Inliner]: procedures = 232, calls = 75, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 116 [2023-02-17 05:50:34,393 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-17 05:50:34,393 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-17 05:50:34,394 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-17 05:50:34,395 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-17 05:50:34,403 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 05:50:34" (1/1) ... [2023-02-17 05:50:34,403 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 05:50:34" (1/1) ... [2023-02-17 05:50:34,408 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 05:50:34" (1/1) ... [2023-02-17 05:50:34,408 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 05:50:34" (1/1) ... [2023-02-17 05:50:34,419 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 05:50:34" (1/1) ... [2023-02-17 05:50:34,425 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 05:50:34" (1/1) ... [2023-02-17 05:50:34,428 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 05:50:34" (1/1) ... [2023-02-17 05:50:34,429 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 05:50:34" (1/1) ... [2023-02-17 05:50:34,433 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-17 05:50:34,434 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-17 05:50:34,434 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-17 05:50:34,434 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-17 05:50:34,435 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 05:50:34" (1/1) ... [2023-02-17 05:50:34,440 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-17 05:50:34,454 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 05:50:34,467 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) [2023-02-17 05:50:34,481 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 [2023-02-17 05:50:34,506 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-02-17 05:50:34,507 INFO L130 BoogieDeclarations]: Found specification of procedure inspect [2023-02-17 05:50:34,507 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect [2023-02-17 05:50:34,507 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-02-17 05:50:34,507 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-02-17 05:50:34,509 INFO L130 BoogieDeclarations]: Found specification of procedure val_from_node [2023-02-17 05:50:34,509 INFO L138 BoogieDeclarations]: Found implementation of procedure val_from_node [2023-02-17 05:50:34,509 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-02-17 05:50:34,509 INFO L130 BoogieDeclarations]: Found specification of procedure fail [2023-02-17 05:50:34,510 INFO L138 BoogieDeclarations]: Found implementation of procedure fail [2023-02-17 05:50:34,510 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-02-17 05:50:34,510 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-02-17 05:50:34,525 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-17 05:50:34,526 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-02-17 05:50:34,526 INFO L130 BoogieDeclarations]: Found specification of procedure list_add [2023-02-17 05:50:34,526 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add [2023-02-17 05:50:34,526 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-02-17 05:50:34,526 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-17 05:50:34,526 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-17 05:50:34,676 INFO L235 CfgBuilder]: Building ICFG [2023-02-17 05:50:34,685 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-17 05:50:35,094 INFO L276 CfgBuilder]: Performing block encoding [2023-02-17 05:50:35,103 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-17 05:50:35,105 INFO L300 CfgBuilder]: Removed 41 assume(true) statements. [2023-02-17 05:50:35,108 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.02 05:50:35 BoogieIcfgContainer [2023-02-17 05:50:35,108 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-17 05:50:35,110 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-17 05:50:35,111 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-17 05:50:35,114 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-17 05:50:35,114 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.02 05:50:33" (1/3) ... [2023-02-17 05:50:35,115 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@570da492 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.02 05:50:35, skipping insertion in model container [2023-02-17 05:50:35,115 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 05:50:34" (2/3) ... [2023-02-17 05:50:35,115 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@570da492 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.02 05:50:35, skipping insertion in model container [2023-02-17 05:50:35,115 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.02 05:50:35" (3/3) ... [2023-02-17 05:50:35,117 INFO L112 eAbstractionObserver]: Analyzing ICFG bubble_sort_linux-2.i [2023-02-17 05:50:35,130 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-17 05:50:35,130 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-02-17 05:50:35,179 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-17 05:50:35,184 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=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@4a127e5f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-17 05:50:35,185 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-02-17 05:50:35,189 INFO L276 IsEmpty]: Start isEmpty. Operand has 118 states, 89 states have (on average 1.7415730337078652) internal successors, (155), 108 states have internal predecessors, (155), 23 states have call successors, (23), 4 states have call predecessors, (23), 4 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2023-02-17 05:50:35,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-02-17 05:50:35,195 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 05:50:35,196 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 05:50:35,196 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 05:50:35,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 05:50:35,201 INFO L85 PathProgramCache]: Analyzing trace with hash 1761516263, now seen corresponding path program 1 times [2023-02-17 05:50:35,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 05:50:35,211 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1660016847] [2023-02-17 05:50:35,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 05:50:35,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 05:50:35,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 05:50:35,378 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 05:50:35,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 05:50:35,379 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1660016847] [2023-02-17 05:50:35,381 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1660016847] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 05:50:35,381 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 05:50:35,381 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-17 05:50:35,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117789501] [2023-02-17 05:50:35,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 05:50:35,389 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-02-17 05:50:35,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 05:50:35,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-02-17 05:50:35,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-17 05:50:35,430 INFO L87 Difference]: Start difference. First operand has 118 states, 89 states have (on average 1.7415730337078652) internal successors, (155), 108 states have internal predecessors, (155), 23 states have call successors, (23), 4 states have call predecessors, (23), 4 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 05:50:35,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 05:50:35,498 INFO L93 Difference]: Finished difference Result 230 states and 397 transitions. [2023-02-17 05:50:35,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-02-17 05:50:35,501 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2023-02-17 05:50:35,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 05:50:35,513 INFO L225 Difference]: With dead ends: 230 [2023-02-17 05:50:35,513 INFO L226 Difference]: Without dead ends: 107 [2023-02-17 05:50:35,522 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-17 05:50:35,526 INFO L413 NwaCegarLoop]: 136 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 136 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-17 05:50:35,527 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 136 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-17 05:50:35,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2023-02-17 05:50:35,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 107. [2023-02-17 05:50:35,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 82 states have (on average 1.2439024390243902) internal successors, (102), 97 states have internal predecessors, (102), 21 states have call successors, (21), 4 states have call predecessors, (21), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-02-17 05:50:35,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 128 transitions. [2023-02-17 05:50:35,581 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 128 transitions. Word has length 9 [2023-02-17 05:50:35,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 05:50:35,582 INFO L495 AbstractCegarLoop]: Abstraction has 107 states and 128 transitions. [2023-02-17 05:50:35,583 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 05:50:35,583 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 128 transitions. [2023-02-17 05:50:35,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-02-17 05:50:35,585 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 05:50:35,586 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] [2023-02-17 05:50:35,586 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-02-17 05:50:35,586 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 05:50:35,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 05:50:35,587 INFO L85 PathProgramCache]: Analyzing trace with hash 849043181, now seen corresponding path program 1 times [2023-02-17 05:50:35,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 05:50:35,587 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1345867910] [2023-02-17 05:50:35,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 05:50:35,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 05:50:35,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 05:50:35,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 05:50:35,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 05:50:36,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 05:50:36,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 05:50:36,027 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1345867910] [2023-02-17 05:50:36,027 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1345867910] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 05:50:36,027 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 05:50:36,028 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-02-17 05:50:36,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67960403] [2023-02-17 05:50:36,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 05:50:36,029 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-02-17 05:50:36,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 05:50:36,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-02-17 05:50:36,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-02-17 05:50:36,031 INFO L87 Difference]: Start difference. First operand 107 states and 128 transitions. Second operand has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-17 05:50:36,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 05:50:36,335 INFO L93 Difference]: Finished difference Result 109 states and 129 transitions. [2023-02-17 05:50:36,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-17 05:50:36,336 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 21 [2023-02-17 05:50:36,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 05:50:36,337 INFO L225 Difference]: With dead ends: 109 [2023-02-17 05:50:36,337 INFO L226 Difference]: Without dead ends: 106 [2023-02-17 05:50:36,338 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-02-17 05:50:36,339 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 242 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 203 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 245 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-17 05:50:36,340 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [245 Valid, 133 Invalid, 237 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 203 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-17 05:50:36,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2023-02-17 05:50:36,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 106. [2023-02-17 05:50:36,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 82 states have (on average 1.2317073170731707) internal successors, (101), 96 states have internal predecessors, (101), 20 states have call successors, (20), 4 states have call predecessors, (20), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-02-17 05:50:36,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 126 transitions. [2023-02-17 05:50:36,355 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 126 transitions. Word has length 21 [2023-02-17 05:50:36,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 05:50:36,356 INFO L495 AbstractCegarLoop]: Abstraction has 106 states and 126 transitions. [2023-02-17 05:50:36,357 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-17 05:50:36,357 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 126 transitions. [2023-02-17 05:50:36,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-02-17 05:50:36,357 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 05:50:36,358 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] [2023-02-17 05:50:36,358 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-02-17 05:50:36,358 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 05:50:36,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 05:50:36,359 INFO L85 PathProgramCache]: Analyzing trace with hash 502050183, now seen corresponding path program 1 times [2023-02-17 05:50:36,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 05:50:36,359 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033460218] [2023-02-17 05:50:36,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 05:50:36,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 05:50:36,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 05:50:36,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 05:50:36,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 05:50:37,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 05:50:37,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 05:50:37,124 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1033460218] [2023-02-17 05:50:37,124 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1033460218] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 05:50:37,125 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 05:50:37,126 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-02-17 05:50:37,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854738726] [2023-02-17 05:50:37,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 05:50:37,126 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-02-17 05:50:37,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 05:50:37,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-02-17 05:50:37,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2023-02-17 05:50:37,128 INFO L87 Difference]: Start difference. First operand 106 states and 126 transitions. Second operand has 11 states, 11 states have (on average 1.8181818181818181) internal successors, (20), 7 states have internal predecessors, (20), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-17 05:50:37,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 05:50:37,942 INFO L93 Difference]: Finished difference Result 196 states and 232 transitions. [2023-02-17 05:50:37,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-02-17 05:50:37,943 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 1.8181818181818181) internal successors, (20), 7 states have internal predecessors, (20), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 24 [2023-02-17 05:50:37,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 05:50:37,947 INFO L225 Difference]: With dead ends: 196 [2023-02-17 05:50:37,947 INFO L226 Difference]: Without dead ends: 190 [2023-02-17 05:50:37,951 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=235, Unknown=0, NotChecked=0, Total=306 [2023-02-17 05:50:37,954 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 493 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 819 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 497 SdHoareTripleChecker+Valid, 169 SdHoareTripleChecker+Invalid, 919 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 819 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-02-17 05:50:37,955 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [497 Valid, 169 Invalid, 919 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 819 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-02-17 05:50:37,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2023-02-17 05:50:37,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 172. [2023-02-17 05:50:37,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 144 states have (on average 1.2430555555555556) internal successors, (179), 158 states have internal predecessors, (179), 23 states have call successors, (23), 6 states have call predecessors, (23), 4 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-02-17 05:50:37,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 209 transitions. [2023-02-17 05:50:37,983 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 209 transitions. Word has length 24 [2023-02-17 05:50:37,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 05:50:37,984 INFO L495 AbstractCegarLoop]: Abstraction has 172 states and 209 transitions. [2023-02-17 05:50:37,984 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 1.8181818181818181) internal successors, (20), 7 states have internal predecessors, (20), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-17 05:50:37,984 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 209 transitions. [2023-02-17 05:50:37,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-02-17 05:50:37,989 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 05:50:37,989 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] [2023-02-17 05:50:37,990 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-02-17 05:50:37,990 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 05:50:37,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 05:50:37,991 INFO L85 PathProgramCache]: Analyzing trace with hash 1234303898, now seen corresponding path program 1 times [2023-02-17 05:50:37,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 05:50:37,992 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1143786060] [2023-02-17 05:50:37,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 05:50:37,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 05:50:38,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 05:50:38,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 05:50:38,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 05:50:38,927 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 05:50:38,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 05:50:38,927 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1143786060] [2023-02-17 05:50:38,928 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1143786060] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 05:50:38,928 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 05:50:38,928 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-02-17 05:50:38,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965686784] [2023-02-17 05:50:38,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 05:50:38,929 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-02-17 05:50:38,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 05:50:38,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-02-17 05:50:38,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2023-02-17 05:50:38,930 INFO L87 Difference]: Start difference. First operand 172 states and 209 transitions. Second operand has 11 states, 11 states have (on average 2.090909090909091) internal successors, (23), 7 states have internal predecessors, (23), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-17 05:50:39,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 05:50:39,825 INFO L93 Difference]: Finished difference Result 274 states and 329 transitions. [2023-02-17 05:50:39,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-02-17 05:50:39,825 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.090909090909091) internal successors, (23), 7 states have internal predecessors, (23), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 27 [2023-02-17 05:50:39,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 05:50:39,827 INFO L225 Difference]: With dead ends: 274 [2023-02-17 05:50:39,827 INFO L226 Difference]: Without dead ends: 271 [2023-02-17 05:50:39,827 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=216, Unknown=0, NotChecked=0, Total=272 [2023-02-17 05:50:39,828 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 307 mSDsluCounter, 214 mSDsCounter, 0 mSdLazyCounter, 973 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 310 SdHoareTripleChecker+Valid, 247 SdHoareTripleChecker+Invalid, 1017 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 973 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-02-17 05:50:39,831 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [310 Valid, 247 Invalid, 1017 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 973 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-02-17 05:50:39,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2023-02-17 05:50:39,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 253. [2023-02-17 05:50:39,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 253 states, 218 states have (on average 1.238532110091743) internal successors, (270), 233 states have internal predecessors, (270), 28 states have call successors, (28), 8 states have call predecessors, (28), 6 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2023-02-17 05:50:39,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 309 transitions. [2023-02-17 05:50:39,879 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 309 transitions. Word has length 27 [2023-02-17 05:50:39,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 05:50:39,880 INFO L495 AbstractCegarLoop]: Abstraction has 253 states and 309 transitions. [2023-02-17 05:50:39,880 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.090909090909091) internal successors, (23), 7 states have internal predecessors, (23), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-17 05:50:39,880 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 309 transitions. [2023-02-17 05:50:39,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-02-17 05:50:39,882 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 05:50:39,882 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] [2023-02-17 05:50:39,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-02-17 05:50:39,883 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 05:50:39,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 05:50:39,884 INFO L85 PathProgramCache]: Analyzing trace with hash 1680148119, now seen corresponding path program 1 times [2023-02-17 05:50:39,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 05:50:39,884 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547028292] [2023-02-17 05:50:39,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 05:50:39,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 05:50:39,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 05:50:40,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 05:50:40,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 05:50:40,917 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 05:50:40,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 05:50:40,917 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1547028292] [2023-02-17 05:50:40,918 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1547028292] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 05:50:40,918 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 05:50:40,918 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-02-17 05:50:40,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608293434] [2023-02-17 05:50:40,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 05:50:40,922 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-02-17 05:50:40,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 05:50:40,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-02-17 05:50:40,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2023-02-17 05:50:40,923 INFO L87 Difference]: Start difference. First operand 253 states and 309 transitions. Second operand has 14 states, 14 states have (on average 1.8571428571428572) internal successors, (26), 10 states have internal predecessors, (26), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-17 05:50:42,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 05:50:42,071 INFO L93 Difference]: Finished difference Result 273 states and 327 transitions. [2023-02-17 05:50:42,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-02-17 05:50:42,072 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.8571428571428572) internal successors, (26), 10 states have internal predecessors, (26), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 30 [2023-02-17 05:50:42,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 05:50:42,074 INFO L225 Difference]: With dead ends: 273 [2023-02-17 05:50:42,074 INFO L226 Difference]: Without dead ends: 270 [2023-02-17 05:50:42,074 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=87, Invalid=375, Unknown=0, NotChecked=0, Total=462 [2023-02-17 05:50:42,075 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 358 mSDsluCounter, 238 mSDsCounter, 0 mSdLazyCounter, 1089 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 361 SdHoareTripleChecker+Valid, 271 SdHoareTripleChecker+Invalid, 1131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 1089 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-02-17 05:50:42,075 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [361 Valid, 271 Invalid, 1131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 1089 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-02-17 05:50:42,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2023-02-17 05:50:42,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 253. [2023-02-17 05:50:42,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 253 states, 218 states have (on average 1.2339449541284404) internal successors, (269), 233 states have internal predecessors, (269), 28 states have call successors, (28), 8 states have call predecessors, (28), 6 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2023-02-17 05:50:42,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 308 transitions. [2023-02-17 05:50:42,110 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 308 transitions. Word has length 30 [2023-02-17 05:50:42,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 05:50:42,111 INFO L495 AbstractCegarLoop]: Abstraction has 253 states and 308 transitions. [2023-02-17 05:50:42,111 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 1.8571428571428572) internal successors, (26), 10 states have internal predecessors, (26), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-17 05:50:42,111 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 308 transitions. [2023-02-17 05:50:42,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-02-17 05:50:42,112 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 05:50:42,112 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] [2023-02-17 05:50:42,112 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-02-17 05:50:42,112 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 05:50:42,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 05:50:42,113 INFO L85 PathProgramCache]: Analyzing trace with hash -493122043, now seen corresponding path program 1 times [2023-02-17 05:50:42,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 05:50:42,113 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1986633525] [2023-02-17 05:50:42,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 05:50:42,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 05:50:42,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 05:50:43,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 05:50:43,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 05:50:43,518 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 05:50:43,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 05:50:43,518 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1986633525] [2023-02-17 05:50:43,518 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1986633525] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 05:50:43,519 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 05:50:43,519 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-02-17 05:50:43,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776725462] [2023-02-17 05:50:43,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 05:50:43,519 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-02-17 05:50:43,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 05:50:43,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-02-17 05:50:43,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2023-02-17 05:50:43,521 INFO L87 Difference]: Start difference. First operand 253 states and 308 transitions. Second operand has 14 states, 14 states have (on average 2.0714285714285716) internal successors, (29), 10 states have internal predecessors, (29), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-17 05:50:44,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 05:50:44,724 INFO L93 Difference]: Finished difference Result 272 states and 325 transitions. [2023-02-17 05:50:44,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-02-17 05:50:44,729 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.0714285714285716) internal successors, (29), 10 states have internal predecessors, (29), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 33 [2023-02-17 05:50:44,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 05:50:44,731 INFO L225 Difference]: With dead ends: 272 [2023-02-17 05:50:44,731 INFO L226 Difference]: Without dead ends: 269 [2023-02-17 05:50:44,731 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=84, Invalid=378, Unknown=0, NotChecked=0, Total=462 [2023-02-17 05:50:44,732 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 343 mSDsluCounter, 286 mSDsCounter, 0 mSdLazyCounter, 1300 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 346 SdHoareTripleChecker+Valid, 319 SdHoareTripleChecker+Invalid, 1340 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 1300 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-02-17 05:50:44,732 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [346 Valid, 319 Invalid, 1340 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 1300 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-02-17 05:50:44,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2023-02-17 05:50:44,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 253. [2023-02-17 05:50:44,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 253 states, 218 states have (on average 1.2293577981651376) internal successors, (268), 233 states have internal predecessors, (268), 28 states have call successors, (28), 8 states have call predecessors, (28), 6 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2023-02-17 05:50:44,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 307 transitions. [2023-02-17 05:50:44,766 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 307 transitions. Word has length 33 [2023-02-17 05:50:44,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 05:50:44,767 INFO L495 AbstractCegarLoop]: Abstraction has 253 states and 307 transitions. [2023-02-17 05:50:44,767 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.0714285714285716) internal successors, (29), 10 states have internal predecessors, (29), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-17 05:50:44,767 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 307 transitions. [2023-02-17 05:50:44,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-02-17 05:50:44,768 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 05:50:44,768 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 05:50:44,769 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-02-17 05:50:44,769 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 05:50:44,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 05:50:44,769 INFO L85 PathProgramCache]: Analyzing trace with hash -2033122620, now seen corresponding path program 1 times [2023-02-17 05:50:44,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 05:50:44,770 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466141270] [2023-02-17 05:50:44,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 05:50:44,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 05:50:44,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 05:50:45,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 05:50:45,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 05:50:46,344 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 05:50:46,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 05:50:46,345 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1466141270] [2023-02-17 05:50:46,345 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1466141270] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 05:50:46,345 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 05:50:46,346 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-02-17 05:50:46,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143516789] [2023-02-17 05:50:46,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 05:50:46,346 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-02-17 05:50:46,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 05:50:46,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-02-17 05:50:46,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2023-02-17 05:50:46,348 INFO L87 Difference]: Start difference. First operand 253 states and 307 transitions. Second operand has 14 states, 14 states have (on average 2.2857142857142856) internal successors, (32), 10 states have internal predecessors, (32), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-17 05:50:47,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 05:50:47,699 INFO L93 Difference]: Finished difference Result 271 states and 323 transitions. [2023-02-17 05:50:47,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-02-17 05:50:47,700 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.2857142857142856) internal successors, (32), 10 states have internal predecessors, (32), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 36 [2023-02-17 05:50:47,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 05:50:47,701 INFO L225 Difference]: With dead ends: 271 [2023-02-17 05:50:47,701 INFO L226 Difference]: Without dead ends: 268 [2023-02-17 05:50:47,702 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=110, Invalid=396, Unknown=0, NotChecked=0, Total=506 [2023-02-17 05:50:47,702 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 467 mSDsluCounter, 254 mSDsCounter, 0 mSdLazyCounter, 1157 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 470 SdHoareTripleChecker+Valid, 286 SdHoareTripleChecker+Invalid, 1229 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 1157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-02-17 05:50:47,702 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [470 Valid, 286 Invalid, 1229 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 1157 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-02-17 05:50:47,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2023-02-17 05:50:47,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 253. [2023-02-17 05:50:47,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 253 states, 218 states have (on average 1.224770642201835) internal successors, (267), 233 states have internal predecessors, (267), 28 states have call successors, (28), 8 states have call predecessors, (28), 6 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2023-02-17 05:50:47,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 306 transitions. [2023-02-17 05:50:47,737 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 306 transitions. Word has length 36 [2023-02-17 05:50:47,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 05:50:47,738 INFO L495 AbstractCegarLoop]: Abstraction has 253 states and 306 transitions. [2023-02-17 05:50:47,738 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.2857142857142856) internal successors, (32), 10 states have internal predecessors, (32), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-17 05:50:47,738 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 306 transitions. [2023-02-17 05:50:47,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-02-17 05:50:47,739 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 05:50:47,740 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 05:50:47,740 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-02-17 05:50:47,740 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 05:50:47,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 05:50:47,741 INFO L85 PathProgramCache]: Analyzing trace with hash -1335339115, now seen corresponding path program 1 times [2023-02-17 05:50:47,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 05:50:47,741 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267482625] [2023-02-17 05:50:47,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 05:50:47,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 05:50:47,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 05:50:48,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 05:50:48,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 05:50:48,583 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 05:50:48,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 05:50:48,584 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [267482625] [2023-02-17 05:50:48,584 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [267482625] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 05:50:48,584 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 05:50:48,586 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-02-17 05:50:48,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770439468] [2023-02-17 05:50:48,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 05:50:48,587 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-02-17 05:50:48,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 05:50:48,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-02-17 05:50:48,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2023-02-17 05:50:48,589 INFO L87 Difference]: Start difference. First operand 253 states and 306 transitions. Second operand has 12 states, 12 states have (on average 2.9166666666666665) internal successors, (35), 8 states have internal predecessors, (35), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-17 05:50:49,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 05:50:49,422 INFO L93 Difference]: Finished difference Result 270 states and 321 transitions. [2023-02-17 05:50:49,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-02-17 05:50:49,423 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.9166666666666665) internal successors, (35), 8 states have internal predecessors, (35), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 39 [2023-02-17 05:50:49,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 05:50:49,425 INFO L225 Difference]: With dead ends: 270 [2023-02-17 05:50:49,425 INFO L226 Difference]: Without dead ends: 267 [2023-02-17 05:50:49,425 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=105, Invalid=447, Unknown=0, NotChecked=0, Total=552 [2023-02-17 05:50:49,426 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 425 mSDsluCounter, 218 mSDsCounter, 0 mSdLazyCounter, 990 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 428 SdHoareTripleChecker+Valid, 250 SdHoareTripleChecker+Invalid, 1047 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 990 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-02-17 05:50:49,426 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [428 Valid, 250 Invalid, 1047 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 990 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-02-17 05:50:49,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2023-02-17 05:50:49,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 253. [2023-02-17 05:50:49,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 253 states, 218 states have (on average 1.2201834862385321) internal successors, (266), 233 states have internal predecessors, (266), 28 states have call successors, (28), 8 states have call predecessors, (28), 6 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2023-02-17 05:50:49,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 305 transitions. [2023-02-17 05:50:49,468 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 305 transitions. Word has length 39 [2023-02-17 05:50:49,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 05:50:49,469 INFO L495 AbstractCegarLoop]: Abstraction has 253 states and 305 transitions. [2023-02-17 05:50:49,469 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.9166666666666665) internal successors, (35), 8 states have internal predecessors, (35), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-17 05:50:49,469 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 305 transitions. [2023-02-17 05:50:49,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2023-02-17 05:50:49,470 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 05:50:49,470 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-02-17 05:50:49,470 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-02-17 05:50:49,471 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 05:50:49,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 05:50:49,471 INFO L85 PathProgramCache]: Analyzing trace with hash 1154705564, now seen corresponding path program 1 times [2023-02-17 05:50:49,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 05:50:49,472 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1799810950] [2023-02-17 05:50:49,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 05:50:49,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 05:50:49,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 05:50:50,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 05:50:50,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 05:50:50,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-02-17 05:50:50,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 05:50:51,128 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-17 05:50:51,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 05:50:51,129 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1799810950] [2023-02-17 05:50:51,129 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1799810950] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 05:50:51,129 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [394741157] [2023-02-17 05:50:51,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 05:50:51,130 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 05:50:51,130 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 05:50:51,133 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) [2023-02-17 05:50:51,137 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-02-17 05:50:51,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 05:50:51,317 INFO L263 TraceCheckSpWp]: Trace formula consists of 416 conjuncts, 127 conjunts are in the unsatisfiable core [2023-02-17 05:50:51,338 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 05:50:51,431 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-17 05:50:51,433 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 39 [2023-02-17 05:50:51,478 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-17 05:50:51,480 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 73 treesize of output 71 [2023-02-17 05:50:51,485 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-17 05:50:51,486 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 73 treesize of output 73 [2023-02-17 05:50:51,510 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 66 treesize of output 54 [2023-02-17 05:50:51,515 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 46 [2023-02-17 05:50:51,662 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-17 05:50:51,662 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 128 treesize of output 135 [2023-02-17 05:50:51,670 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-17 05:50:51,674 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-17 05:50:51,676 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-17 05:50:51,678 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 71 treesize of output 64 [2023-02-17 05:50:51,684 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 109 treesize of output 85 [2023-02-17 05:50:51,689 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-17 05:50:51,691 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 47 [2023-02-17 05:50:51,774 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-17 05:50:51,775 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 69 treesize of output 69 [2023-02-17 05:50:51,843 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-17 05:50:51,844 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 23 [2023-02-17 05:50:51,905 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-17 05:50:51,906 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 75 treesize of output 81 [2023-02-17 05:50:51,911 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-17 05:50:51,912 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 43 [2023-02-17 05:50:51,964 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-17 05:50:51,965 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 69 treesize of output 43 [2023-02-17 05:50:52,065 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-17 05:50:52,068 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-17 05:50:52,068 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 122 treesize of output 150 [2023-02-17 05:50:52,074 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-17 05:50:52,078 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-17 05:50:52,080 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-17 05:50:52,081 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 102 treesize of output 110 [2023-02-17 05:50:52,091 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-17 05:50:52,095 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 79 treesize of output 75 [2023-02-17 05:50:52,116 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-02-17 05:50:52,942 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-17 05:50:52,978 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-17 05:50:52,988 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 52 select indices, 52 select index equivalence classes, 0 disjoint index pairs (out of 1326 index pairs), introduced 53 new quantified variables, introduced 1376 case distinctions, treesize of input 3796 treesize of output 14081