./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-crafted/mapsum5.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b5317dae 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/array-crafted/mapsum5.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 547252845d807a057f585b63b3488b50cdb63f4784535b1d9fe87f3af67ef42c --- Real Ultimate output --- This is Ultimate 0.2.2-?-b5317da-m [2023-02-15 23:53:59,882 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-15 23:53:59,884 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-15 23:53:59,919 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-15 23:53:59,919 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-15 23:53:59,922 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-15 23:53:59,924 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-15 23:53:59,932 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-15 23:53:59,934 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-15 23:53:59,938 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-15 23:53:59,939 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-15 23:53:59,941 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-15 23:53:59,941 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-15 23:53:59,943 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-15 23:53:59,944 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-15 23:53:59,945 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-15 23:53:59,946 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-15 23:53:59,947 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-15 23:53:59,948 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-15 23:53:59,952 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-15 23:53:59,953 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-15 23:53:59,954 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-15 23:53:59,955 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-15 23:53:59,955 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-15 23:53:59,967 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-15 23:53:59,967 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-15 23:53:59,967 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-15 23:53:59,969 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-15 23:53:59,970 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-15 23:53:59,970 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-15 23:53:59,970 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-15 23:53:59,972 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-15 23:53:59,973 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-15 23:53:59,974 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-15 23:53:59,975 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-15 23:53:59,975 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-15 23:53:59,976 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-15 23:53:59,976 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-15 23:53:59,976 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-15 23:53:59,977 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-15 23:53:59,978 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-15 23:53:59,979 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-02-15 23:54:00,004 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-15 23:54:00,005 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-15 23:54:00,005 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-15 23:54:00,005 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-15 23:54:00,006 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-15 23:54:00,006 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-15 23:54:00,007 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-15 23:54:00,007 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-15 23:54:00,007 INFO L138 SettingsManager]: * Use SBE=true [2023-02-15 23:54:00,007 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-15 23:54:00,008 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-15 23:54:00,008 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-15 23:54:00,008 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-15 23:54:00,008 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-15 23:54:00,008 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-02-15 23:54:00,008 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-15 23:54:00,009 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-02-15 23:54:00,009 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-15 23:54:00,009 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-15 23:54:00,009 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-15 23:54:00,009 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-02-15 23:54:00,009 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-15 23:54:00,009 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-15 23:54:00,009 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-15 23:54:00,010 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-15 23:54:00,010 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-15 23:54:00,010 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-15 23:54:00,010 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-02-15 23:54:00,010 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-15 23:54:00,011 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-15 23:54:00,011 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-15 23:54:00,011 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-02-15 23:54:00,011 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-15 23:54:00,011 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-15 23:54:00,011 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-15 23:54:00,011 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 547252845d807a057f585b63b3488b50cdb63f4784535b1d9fe87f3af67ef42c [2023-02-15 23:54:00,238 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-15 23:54:00,261 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-15 23:54:00,263 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-15 23:54:00,264 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-15 23:54:00,264 INFO L275 PluginConnector]: CDTParser initialized [2023-02-15 23:54:00,265 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-crafted/mapsum5.i [2023-02-15 23:54:01,402 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-15 23:54:01,642 INFO L351 CDTParser]: Found 1 translation units. [2023-02-15 23:54:01,643 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-crafted/mapsum5.i [2023-02-15 23:54:01,647 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/004762501/a6bb982ff8954c77bd81c2c4caaff08c/FLAG79c3fd58a [2023-02-15 23:54:01,664 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/004762501/a6bb982ff8954c77bd81c2c4caaff08c [2023-02-15 23:54:01,669 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-15 23:54:01,670 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-15 23:54:01,682 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-15 23:54:01,686 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-15 23:54:01,690 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-15 23:54:01,692 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 11:54:01" (1/1) ... [2023-02-15 23:54:01,697 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7203be5c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 11:54:01, skipping insertion in model container [2023-02-15 23:54:01,705 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 11:54:01" (1/1) ... [2023-02-15 23:54:01,711 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-15 23:54:01,725 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-15 23:54:01,829 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/array-crafted/mapsum5.i[1380,1393] [2023-02-15 23:54:01,833 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-15 23:54:01,840 INFO L203 MainTranslator]: Completed pre-run [2023-02-15 23:54:01,855 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/array-crafted/mapsum5.i[1380,1393] [2023-02-15 23:54:01,856 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-15 23:54:01,866 INFO L208 MainTranslator]: Completed translation [2023-02-15 23:54:01,866 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 11:54:01 WrapperNode [2023-02-15 23:54:01,866 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-15 23:54:01,867 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-15 23:54:01,868 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-15 23:54:01,868 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-15 23:54:01,873 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 11:54:01" (1/1) ... [2023-02-15 23:54:01,878 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 11:54:01" (1/1) ... [2023-02-15 23:54:01,893 INFO L138 Inliner]: procedures = 16, calls = 21, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 70 [2023-02-15 23:54:01,894 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-15 23:54:01,894 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-15 23:54:01,894 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-15 23:54:01,895 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-15 23:54:01,901 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 11:54:01" (1/1) ... [2023-02-15 23:54:01,902 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 11:54:01" (1/1) ... [2023-02-15 23:54:01,903 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 11:54:01" (1/1) ... [2023-02-15 23:54:01,904 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 11:54:01" (1/1) ... [2023-02-15 23:54:01,907 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 11:54:01" (1/1) ... [2023-02-15 23:54:01,910 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 11:54:01" (1/1) ... [2023-02-15 23:54:01,911 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 11:54:01" (1/1) ... [2023-02-15 23:54:01,912 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 11:54:01" (1/1) ... [2023-02-15 23:54:01,913 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-15 23:54:01,914 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-15 23:54:01,914 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-15 23:54:01,914 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-15 23:54:01,915 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 11:54:01" (1/1) ... [2023-02-15 23:54:01,922 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-15 23:54:01,936 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 23:54:01,960 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) [2023-02-15 23:54:01,963 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 [2023-02-15 23:54:02,011 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-15 23:54:02,012 INFO L130 BoogieDeclarations]: Found specification of procedure mapsum [2023-02-15 23:54:02,012 INFO L138 BoogieDeclarations]: Found implementation of procedure mapsum [2023-02-15 23:54:02,012 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-02-15 23:54:02,012 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-02-15 23:54:02,012 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-02-15 23:54:02,012 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-15 23:54:02,012 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-15 23:54:02,012 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-02-15 23:54:02,013 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-02-15 23:54:02,058 INFO L235 CfgBuilder]: Building ICFG [2023-02-15 23:54:02,060 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-15 23:54:02,167 INFO L276 CfgBuilder]: Performing block encoding [2023-02-15 23:54:02,175 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-15 23:54:02,175 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2023-02-15 23:54:02,177 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 11:54:02 BoogieIcfgContainer [2023-02-15 23:54:02,177 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-15 23:54:02,179 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-15 23:54:02,179 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-15 23:54:02,182 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-15 23:54:02,182 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.02 11:54:01" (1/3) ... [2023-02-15 23:54:02,182 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@167b38bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.02 11:54:02, skipping insertion in model container [2023-02-15 23:54:02,183 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 11:54:01" (2/3) ... [2023-02-15 23:54:02,183 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@167b38bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.02 11:54:02, skipping insertion in model container [2023-02-15 23:54:02,183 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 11:54:02" (3/3) ... [2023-02-15 23:54:02,184 INFO L112 eAbstractionObserver]: Analyzing ICFG mapsum5.i [2023-02-15 23:54:02,217 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-15 23:54:02,217 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-02-15 23:54:02,298 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-15 23:54:02,303 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;@4eab658, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-15 23:54:02,304 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-02-15 23:54:02,307 INFO L276 IsEmpty]: Start isEmpty. Operand has 28 states, 22 states have (on average 1.4090909090909092) internal successors, (31), 23 states have internal predecessors, (31), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-02-15 23:54:02,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-02-15 23:54:02,314 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 23:54:02,315 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 23:54:02,315 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 23:54:02,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 23:54:02,319 INFO L85 PathProgramCache]: Analyzing trace with hash 310067850, now seen corresponding path program 1 times [2023-02-15 23:54:02,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 23:54:02,328 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [504031939] [2023-02-15 23:54:02,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 23:54:02,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 23:54:02,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:54:02,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:54:02,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:54:02,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-02-15 23:54:02,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:54:02,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-02-15 23:54:02,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:54:02,553 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-02-15 23:54:02,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 23:54:02,554 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [504031939] [2023-02-15 23:54:02,554 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [504031939] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 23:54:02,555 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 23:54:02,555 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-15 23:54:02,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282714748] [2023-02-15 23:54:02,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 23:54:02,559 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-02-15 23:54:02,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 23:54:02,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-02-15 23:54:02,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-15 23:54:02,583 INFO L87 Difference]: Start difference. First operand has 28 states, 22 states have (on average 1.4090909090909092) internal successors, (31), 23 states have internal predecessors, (31), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 2 states, 2 states have (on average 7.5) internal successors, (15), 2 states have internal predecessors, (15), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-02-15 23:54:02,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 23:54:02,602 INFO L93 Difference]: Finished difference Result 51 states and 69 transitions. [2023-02-15 23:54:02,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-02-15 23:54:02,604 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 7.5) internal successors, (15), 2 states have internal predecessors, (15), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 29 [2023-02-15 23:54:02,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 23:54:02,609 INFO L225 Difference]: With dead ends: 51 [2023-02-15 23:54:02,610 INFO L226 Difference]: Without dead ends: 23 [2023-02-15 23:54:02,613 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-15 23:54:02,619 INFO L413 NwaCegarLoop]: 33 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, 33 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 [2023-02-15 23:54:02,620 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 23:54:02,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2023-02-15 23:54:02,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2023-02-15 23:54:02,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 18 states have internal predecessors, (21), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-02-15 23:54:02,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2023-02-15 23:54:02,646 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 29 [2023-02-15 23:54:02,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 23:54:02,647 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2023-02-15 23:54:02,647 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 7.5) internal successors, (15), 2 states have internal predecessors, (15), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-02-15 23:54:02,647 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2023-02-15 23:54:02,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-02-15 23:54:02,649 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 23:54:02,649 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 23:54:02,649 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-02-15 23:54:02,650 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 23:54:02,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 23:54:02,651 INFO L85 PathProgramCache]: Analyzing trace with hash -1979244726, now seen corresponding path program 1 times [2023-02-15 23:54:02,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 23:54:02,651 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933385116] [2023-02-15 23:54:02,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 23:54:02,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 23:54:02,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:54:02,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:54:02,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:54:02,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-02-15 23:54:02,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:54:02,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-02-15 23:54:02,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:54:02,860 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-02-15 23:54:02,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 23:54:02,864 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1933385116] [2023-02-15 23:54:02,865 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1933385116] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 23:54:02,865 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 23:54:02,865 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-15 23:54:02,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755229037] [2023-02-15 23:54:02,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 23:54:02,866 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-15 23:54:02,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 23:54:02,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-15 23:54:02,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-15 23:54:02,869 INFO L87 Difference]: Start difference. First operand 23 states and 27 transitions. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-02-15 23:54:02,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 23:54:02,907 INFO L93 Difference]: Finished difference Result 43 states and 51 transitions. [2023-02-15 23:54:02,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-15 23:54:02,907 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 29 [2023-02-15 23:54:02,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 23:54:02,909 INFO L225 Difference]: With dead ends: 43 [2023-02-15 23:54:02,909 INFO L226 Difference]: Without dead ends: 25 [2023-02-15 23:54:02,910 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-15 23:54:02,911 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 1 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 23:54:02,913 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 41 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 23:54:02,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2023-02-15 23:54:02,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 24. [2023-02-15 23:54:02,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 19 states have internal predecessors, (22), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-02-15 23:54:02,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2023-02-15 23:54:02,920 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 29 [2023-02-15 23:54:02,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 23:54:02,921 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 28 transitions. [2023-02-15 23:54:02,921 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-02-15 23:54:02,921 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2023-02-15 23:54:02,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-02-15 23:54:02,922 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 23:54:02,923 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 23:54:02,923 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-02-15 23:54:02,923 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 23:54:02,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 23:54:02,925 INFO L85 PathProgramCache]: Analyzing trace with hash -789530644, now seen corresponding path program 1 times [2023-02-15 23:54:02,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 23:54:02,926 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1604001694] [2023-02-15 23:54:02,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 23:54:02,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 23:54:02,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:54:03,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-02-15 23:54:03,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:54:03,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-02-15 23:54:03,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:54:03,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-02-15 23:54:03,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:54:03,073 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-02-15 23:54:03,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 23:54:03,074 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1604001694] [2023-02-15 23:54:03,075 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1604001694] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 23:54:03,075 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [856518065] [2023-02-15 23:54:03,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 23:54:03,075 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 23:54:03,076 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 23:54:03,097 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) [2023-02-15 23:54:03,098 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-02-15 23:54:03,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:54:03,158 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 4 conjunts are in the unsatisfiable core [2023-02-15 23:54:03,162 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 23:54:03,209 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-02-15 23:54:03,209 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 23:54:03,242 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-02-15 23:54:03,242 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [856518065] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 23:54:03,243 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 23:54:03,243 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 9 [2023-02-15 23:54:03,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530065124] [2023-02-15 23:54:03,243 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 23:54:03,244 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-02-15 23:54:03,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 23:54:03,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-02-15 23:54:03,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-02-15 23:54:03,245 INFO L87 Difference]: Start difference. First operand 24 states and 28 transitions. Second operand has 9 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 9 states have internal predecessors, (33), 2 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (7), 1 states have call predecessors, (7), 2 states have call successors, (7) [2023-02-15 23:54:03,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 23:54:03,312 INFO L93 Difference]: Finished difference Result 47 states and 59 transitions. [2023-02-15 23:54:03,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-02-15 23:54:03,313 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 9 states have internal predecessors, (33), 2 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (7), 1 states have call predecessors, (7), 2 states have call successors, (7) Word has length 31 [2023-02-15 23:54:03,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 23:54:03,313 INFO L225 Difference]: With dead ends: 47 [2023-02-15 23:54:03,313 INFO L226 Difference]: Without dead ends: 29 [2023-02-15 23:54:03,314 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2023-02-15 23:54:03,315 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 25 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 23:54:03,315 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 71 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 23:54:03,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2023-02-15 23:54:03,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 27. [2023-02-15 23:54:03,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 22 states have (on average 1.1363636363636365) internal successors, (25), 22 states have internal predecessors, (25), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-02-15 23:54:03,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 31 transitions. [2023-02-15 23:54:03,319 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 31 transitions. Word has length 31 [2023-02-15 23:54:03,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 23:54:03,320 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 31 transitions. [2023-02-15 23:54:03,320 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 9 states have internal predecessors, (33), 2 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (7), 1 states have call predecessors, (7), 2 states have call successors, (7) [2023-02-15 23:54:03,320 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 31 transitions. [2023-02-15 23:54:03,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-02-15 23:54:03,321 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 23:54:03,321 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 23:54:03,340 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-02-15 23:54:03,532 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 23:54:03,532 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 23:54:03,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 23:54:03,533 INFO L85 PathProgramCache]: Analyzing trace with hash 343299212, now seen corresponding path program 1 times [2023-02-15 23:54:03,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 23:54:03,533 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453075393] [2023-02-15 23:54:03,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 23:54:03,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 23:54:03,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:54:03,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-02-15 23:54:03,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:54:03,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-02-15 23:54:03,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:54:03,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-02-15 23:54:03,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:54:03,623 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2023-02-15 23:54:03,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 23:54:03,624 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453075393] [2023-02-15 23:54:03,625 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [453075393] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 23:54:03,625 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 23:54:03,625 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-15 23:54:03,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4525008] [2023-02-15 23:54:03,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 23:54:03,626 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-15 23:54:03,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 23:54:03,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-15 23:54:03,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-02-15 23:54:03,627 INFO L87 Difference]: Start difference. First operand 27 states and 31 transitions. Second operand has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-02-15 23:54:03,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 23:54:03,665 INFO L93 Difference]: Finished difference Result 42 states and 47 transitions. [2023-02-15 23:54:03,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-15 23:54:03,665 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 39 [2023-02-15 23:54:03,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 23:54:03,666 INFO L225 Difference]: With dead ends: 42 [2023-02-15 23:54:03,667 INFO L226 Difference]: Without dead ends: 29 [2023-02-15 23:54:03,667 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-02-15 23:54:03,668 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 19 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 23:54:03,669 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 28 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 23:54:03,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2023-02-15 23:54:03,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 28. [2023-02-15 23:54:03,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 23 states have (on average 1.1304347826086956) internal successors, (26), 23 states have internal predecessors, (26), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-02-15 23:54:03,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2023-02-15 23:54:03,672 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 39 [2023-02-15 23:54:03,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 23:54:03,673 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2023-02-15 23:54:03,674 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-02-15 23:54:03,674 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2023-02-15 23:54:03,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2023-02-15 23:54:03,674 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 23:54:03,675 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 23:54:03,675 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-02-15 23:54:03,675 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 23:54:03,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 23:54:03,675 INFO L85 PathProgramCache]: Analyzing trace with hash 1487527882, now seen corresponding path program 1 times [2023-02-15 23:54:03,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 23:54:03,676 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430461103] [2023-02-15 23:54:03,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 23:54:03,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 23:54:03,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:54:03,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-02-15 23:54:03,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:54:03,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-02-15 23:54:03,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:54:03,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-02-15 23:54:03,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:54:03,795 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-02-15 23:54:03,795 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 23:54:03,795 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1430461103] [2023-02-15 23:54:03,795 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1430461103] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 23:54:03,796 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [331353818] [2023-02-15 23:54:03,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 23:54:03,796 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 23:54:03,796 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 23:54:03,812 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 23:54:03,813 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-02-15 23:54:03,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:54:03,890 INFO L263 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 4 conjunts are in the unsatisfiable core [2023-02-15 23:54:03,892 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 23:54:03,927 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-02-15 23:54:03,927 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 23:54:03,991 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-02-15 23:54:03,992 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [331353818] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 23:54:03,992 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 23:54:03,992 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 6] total 10 [2023-02-15 23:54:03,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022098180] [2023-02-15 23:54:03,992 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 23:54:03,993 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-02-15 23:54:03,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 23:54:03,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-02-15 23:54:03,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2023-02-15 23:54:03,994 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand has 10 states, 10 states have (on average 4.1) internal successors, (41), 10 states have internal predecessors, (41), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 1 states have call predecessors, (6), 2 states have call successors, (6) [2023-02-15 23:54:04,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 23:54:04,050 INFO L93 Difference]: Finished difference Result 50 states and 60 transitions. [2023-02-15 23:54:04,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-02-15 23:54:04,051 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.1) internal successors, (41), 10 states have internal predecessors, (41), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 1 states have call predecessors, (6), 2 states have call successors, (6) Word has length 41 [2023-02-15 23:54:04,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 23:54:04,052 INFO L225 Difference]: With dead ends: 50 [2023-02-15 23:54:04,052 INFO L226 Difference]: Without dead ends: 31 [2023-02-15 23:54:04,052 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 80 SyntacticMatches, 3 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2023-02-15 23:54:04,053 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 24 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 23:54:04,053 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 75 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 23:54:04,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2023-02-15 23:54:04,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 30. [2023-02-15 23:54:04,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 25 states have (on average 1.12) internal successors, (28), 25 states have internal predecessors, (28), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-02-15 23:54:04,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 34 transitions. [2023-02-15 23:54:04,057 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 34 transitions. Word has length 41 [2023-02-15 23:54:04,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 23:54:04,057 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 34 transitions. [2023-02-15 23:54:04,057 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.1) internal successors, (41), 10 states have internal predecessors, (41), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 1 states have call predecessors, (6), 2 states have call successors, (6) [2023-02-15 23:54:04,058 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 34 transitions. [2023-02-15 23:54:04,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2023-02-15 23:54:04,058 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 23:54:04,059 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 23:54:04,077 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-02-15 23:54:04,264 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 23:54:04,264 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 23:54:04,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 23:54:04,265 INFO L85 PathProgramCache]: Analyzing trace with hash 1010837064, now seen corresponding path program 2 times [2023-02-15 23:54:04,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 23:54:04,265 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1817120495] [2023-02-15 23:54:04,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 23:54:04,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 23:54:04,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat