./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/heap-manipulation/bubble_sort_linux-1.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-1.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 a38de44f112a10364737c35b840e673503a211a020b9f494a50e4a32c8fe31c0 --- Real Ultimate output --- This is Ultimate 0.2.2-?-574ddb4 [2023-02-17 05:50:21,938 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-17 05:50:21,940 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-17 05:50:21,979 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-17 05:50:21,980 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-17 05:50:21,983 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-17 05:50:21,986 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-17 05:50:21,989 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-17 05:50:21,991 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-17 05:50:21,992 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-17 05:50:21,994 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-17 05:50:21,996 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-17 05:50:21,996 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-17 05:50:22,004 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-17 05:50:22,005 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-17 05:50:22,006 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-17 05:50:22,007 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-17 05:50:22,008 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-17 05:50:22,010 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-17 05:50:22,013 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-17 05:50:22,015 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-17 05:50:22,016 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-17 05:50:22,018 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-17 05:50:22,019 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-17 05:50:22,024 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-17 05:50:22,024 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-17 05:50:22,025 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-17 05:50:22,026 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-17 05:50:22,026 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-17 05:50:22,027 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-17 05:50:22,027 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-17 05:50:22,028 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-17 05:50:22,029 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-17 05:50:22,030 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-17 05:50:22,032 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-17 05:50:22,032 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-17 05:50:22,032 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-17 05:50:22,033 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-17 05:50:22,033 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-17 05:50:22,034 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-17 05:50:22,035 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-17 05:50:22,036 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-02-17 05:50:22,068 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-17 05:50:22,068 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-17 05:50:22,069 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-17 05:50:22,069 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-17 05:50:22,071 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-17 05:50:22,071 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-17 05:50:22,072 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-17 05:50:22,072 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-17 05:50:22,072 INFO L138 SettingsManager]: * Use SBE=true [2023-02-17 05:50:22,072 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-17 05:50:22,073 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-17 05:50:22,073 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-17 05:50:22,074 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-17 05:50:22,074 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-17 05:50:22,074 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-02-17 05:50:22,074 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-17 05:50:22,074 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-02-17 05:50:22,075 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-17 05:50:22,075 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-17 05:50:22,075 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-17 05:50:22,075 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-02-17 05:50:22,075 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-17 05:50:22,076 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-17 05:50:22,076 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-17 05:50:22,076 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-17 05:50:22,076 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-17 05:50:22,076 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-17 05:50:22,077 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-02-17 05:50:22,077 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-17 05:50:22,077 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-17 05:50:22,078 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-17 05:50:22,078 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-02-17 05:50:22,078 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-17 05:50:22,078 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-17 05:50:22,078 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-17 05:50:22,079 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a38de44f112a10364737c35b840e673503a211a020b9f494a50e4a32c8fe31c0 [2023-02-17 05:50:22,307 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-17 05:50:22,323 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-17 05:50:22,325 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-17 05:50:22,326 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-17 05:50:22,326 INFO L275 PluginConnector]: CDTParser initialized [2023-02-17 05:50:22,327 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/heap-manipulation/bubble_sort_linux-1.i [2023-02-17 05:50:23,477 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-17 05:50:23,757 INFO L351 CDTParser]: Found 1 translation units. [2023-02-17 05:50:23,758 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/heap-manipulation/bubble_sort_linux-1.i [2023-02-17 05:50:23,771 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d1d03315b/7a603a2462d84fd58e8043e3e33ef428/FLAGccdc23814 [2023-02-17 05:50:23,786 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d1d03315b/7a603a2462d84fd58e8043e3e33ef428 [2023-02-17 05:50:23,789 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-17 05:50:23,790 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-17 05:50:23,791 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-17 05:50:23,791 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-17 05:50:23,794 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-17 05:50:23,794 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.02 05:50:23" (1/1) ... [2023-02-17 05:50:23,795 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@79807f55 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 05:50:23, skipping insertion in model container [2023-02-17 05:50:23,796 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.02 05:50:23" (1/1) ... [2023-02-17 05:50:23,801 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-17 05:50:23,855 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-17 05:50:24,220 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-1.i[33822,33835] [2023-02-17 05:50:24,262 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-17 05:50:24,274 INFO L203 MainTranslator]: Completed pre-run [2023-02-17 05:50:24,308 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-1.i[33822,33835] [2023-02-17 05:50:24,324 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-17 05:50:24,394 INFO L208 MainTranslator]: Completed translation [2023-02-17 05:50:24,394 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 05:50:24 WrapperNode [2023-02-17 05:50:24,394 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-17 05:50:24,395 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-17 05:50:24,395 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-17 05:50:24,396 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-17 05:50:24,401 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 05:50:24" (1/1) ... [2023-02-17 05:50:24,418 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 05:50:24" (1/1) ... [2023-02-17 05:50:24,462 INFO L138 Inliner]: procedures = 232, calls = 75, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 116 [2023-02-17 05:50:24,463 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-17 05:50:24,463 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-17 05:50:24,463 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-17 05:50:24,464 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-17 05:50:24,472 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 05:50:24" (1/1) ... [2023-02-17 05:50:24,473 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 05:50:24" (1/1) ... [2023-02-17 05:50:24,497 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 05:50:24" (1/1) ... [2023-02-17 05:50:24,497 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 05:50:24" (1/1) ... [2023-02-17 05:50:24,506 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 05:50:24" (1/1) ... [2023-02-17 05:50:24,513 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 05:50:24" (1/1) ... [2023-02-17 05:50:24,518 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 05:50:24" (1/1) ... [2023-02-17 05:50:24,520 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 05:50:24" (1/1) ... [2023-02-17 05:50:24,534 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-17 05:50:24,535 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-17 05:50:24,536 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-17 05:50:24,536 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-17 05:50:24,537 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 05:50:24" (1/1) ... [2023-02-17 05:50:24,542 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-17 05:50:24,553 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 05:50:24,564 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 05:50:24,583 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 05:50:24,599 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-02-17 05:50:24,599 INFO L130 BoogieDeclarations]: Found specification of procedure inspect [2023-02-17 05:50:24,600 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect [2023-02-17 05:50:24,601 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-02-17 05:50:24,601 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-02-17 05:50:24,602 INFO L130 BoogieDeclarations]: Found specification of procedure val_from_node [2023-02-17 05:50:24,603 INFO L138 BoogieDeclarations]: Found implementation of procedure val_from_node [2023-02-17 05:50:24,603 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-02-17 05:50:24,603 INFO L130 BoogieDeclarations]: Found specification of procedure fail [2023-02-17 05:50:24,603 INFO L138 BoogieDeclarations]: Found implementation of procedure fail [2023-02-17 05:50:24,603 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-02-17 05:50:24,603 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-02-17 05:50:24,603 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-17 05:50:24,604 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-02-17 05:50:24,604 INFO L130 BoogieDeclarations]: Found specification of procedure list_add [2023-02-17 05:50:24,604 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add [2023-02-17 05:50:24,604 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-02-17 05:50:24,604 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-17 05:50:24,604 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-17 05:50:24,746 INFO L235 CfgBuilder]: Building ICFG [2023-02-17 05:50:24,748 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-17 05:50:25,094 INFO L276 CfgBuilder]: Performing block encoding [2023-02-17 05:50:25,101 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-17 05:50:25,101 INFO L300 CfgBuilder]: Removed 41 assume(true) statements. [2023-02-17 05:50:25,103 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.02 05:50:25 BoogieIcfgContainer [2023-02-17 05:50:25,104 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-17 05:50:25,106 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-17 05:50:25,106 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-17 05:50:25,109 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-17 05:50:25,109 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.02 05:50:23" (1/3) ... [2023-02-17 05:50:25,110 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75eb08df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.02 05:50:25, skipping insertion in model container [2023-02-17 05:50:25,110 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 05:50:24" (2/3) ... [2023-02-17 05:50:25,110 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75eb08df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.02 05:50:25, skipping insertion in model container [2023-02-17 05:50:25,110 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.02 05:50:25" (3/3) ... [2023-02-17 05:50:25,112 INFO L112 eAbstractionObserver]: Analyzing ICFG bubble_sort_linux-1.i [2023-02-17 05:50:25,128 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-17 05:50:25,128 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-02-17 05:50:25,173 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-17 05:50:25,179 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;@2c79d82b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-17 05:50:25,179 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-02-17 05:50:25,185 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 05:50:25,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-02-17 05:50:25,190 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 05:50:25,190 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 05:50:25,191 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 05:50:25,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 05:50:25,196 INFO L85 PathProgramCache]: Analyzing trace with hash 1761516263, now seen corresponding path program 1 times [2023-02-17 05:50:25,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 05:50:25,204 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [162134013] [2023-02-17 05:50:25,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 05:50:25,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 05:50:25,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 05:50:25,351 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 05:50:25,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 05:50:25,352 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [162134013] [2023-02-17 05:50:25,353 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [162134013] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 05:50:25,353 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 05:50:25,353 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-17 05:50:25,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935985974] [2023-02-17 05:50:25,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 05:50:25,359 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-02-17 05:50:25,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 05:50:25,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-02-17 05:50:25,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-17 05:50:25,393 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 05:50:25,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 05:50:25,459 INFO L93 Difference]: Finished difference Result 230 states and 397 transitions. [2023-02-17 05:50:25,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-02-17 05:50:25,462 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 05:50:25,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 05:50:25,472 INFO L225 Difference]: With dead ends: 230 [2023-02-17 05:50:25,472 INFO L226 Difference]: Without dead ends: 107 [2023-02-17 05:50:25,480 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 05:50:25,486 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 05:50:25,487 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 05:50:25,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2023-02-17 05:50:25,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 107. [2023-02-17 05:50:25,524 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 05:50:25,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 128 transitions. [2023-02-17 05:50:25,535 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 128 transitions. Word has length 9 [2023-02-17 05:50:25,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 05:50:25,536 INFO L495 AbstractCegarLoop]: Abstraction has 107 states and 128 transitions. [2023-02-17 05:50:25,536 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 05:50:25,536 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 128 transitions. [2023-02-17 05:50:25,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-02-17 05:50:25,539 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 05:50:25,539 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 05:50:25,539 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-02-17 05:50:25,540 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 05:50:25,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 05:50:25,541 INFO L85 PathProgramCache]: Analyzing trace with hash 849043181, now seen corresponding path program 1 times [2023-02-17 05:50:25,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 05:50:25,541 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160449878] [2023-02-17 05:50:25,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 05:50:25,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 05:50:25,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 05:50:25,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 05:50:25,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 05:50:25,922 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 05:50:25,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 05:50:25,922 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1160449878] [2023-02-17 05:50:25,922 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1160449878] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 05:50:25,922 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 05:50:25,923 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-02-17 05:50:25,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442706349] [2023-02-17 05:50:25,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 05:50:25,925 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-02-17 05:50:25,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 05:50:25,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-02-17 05:50:25,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-02-17 05:50:25,927 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 05:50:26,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 05:50:26,261 INFO L93 Difference]: Finished difference Result 109 states and 129 transitions. [2023-02-17 05:50:26,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-17 05:50:26,264 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 05:50:26,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 05:50:26,269 INFO L225 Difference]: With dead ends: 109 [2023-02-17 05:50:26,269 INFO L226 Difference]: Without dead ends: 106 [2023-02-17 05:50:26,273 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 05:50:26,275 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, 0.3s IncrementalHoareTripleChecker+Time [2023-02-17 05:50:26,276 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [245 Valid, 133 Invalid, 237 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 203 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-02-17 05:50:26,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2023-02-17 05:50:26,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 106. [2023-02-17 05:50:26,297 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 05:50:26,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 126 transitions. [2023-02-17 05:50:26,299 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 126 transitions. Word has length 21 [2023-02-17 05:50:26,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 05:50:26,301 INFO L495 AbstractCegarLoop]: Abstraction has 106 states and 126 transitions. [2023-02-17 05:50:26,301 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 05:50:26,302 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 126 transitions. [2023-02-17 05:50:26,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-02-17 05:50:26,302 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 05:50:26,303 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 05:50:26,303 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-02-17 05:50:26,303 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 05:50:26,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 05:50:26,304 INFO L85 PathProgramCache]: Analyzing trace with hash 502050183, now seen corresponding path program 1 times [2023-02-17 05:50:26,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 05:50:26,305 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [244543221] [2023-02-17 05:50:26,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 05:50:26,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 05:50:26,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 05:50:27,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 05:50:27,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 05:50:27,382 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 05:50:27,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 05:50:27,382 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [244543221] [2023-02-17 05:50:27,382 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [244543221] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 05:50:27,383 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 05:50:27,383 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-02-17 05:50:27,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271857478] [2023-02-17 05:50:27,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 05:50:27,384 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-02-17 05:50:27,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 05:50:27,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-02-17 05:50:27,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2023-02-17 05:50:27,386 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 05:50:28,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 05:50:28,227 INFO L93 Difference]: Finished difference Result 196 states and 232 transitions. [2023-02-17 05:50:28,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-02-17 05:50:28,228 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 05:50:28,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 05:50:28,233 INFO L225 Difference]: With dead ends: 196 [2023-02-17 05:50:28,234 INFO L226 Difference]: Without dead ends: 190 [2023-02-17 05:50:28,236 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=83, Invalid=297, Unknown=0, NotChecked=0, Total=380 [2023-02-17 05:50:28,240 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 533 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 736 mSolverCounterSat, 111 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 533 SdHoareTripleChecker+Valid, 169 SdHoareTripleChecker+Invalid, 847 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 111 IncrementalHoareTripleChecker+Valid, 736 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-02-17 05:50:28,241 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [533 Valid, 169 Invalid, 847 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [111 Valid, 736 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-02-17 05:50:28,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2023-02-17 05:50:28,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 172. [2023-02-17 05:50:28,277 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 05:50:28,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 209 transitions. [2023-02-17 05:50:28,278 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 209 transitions. Word has length 24 [2023-02-17 05:50:28,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 05:50:28,278 INFO L495 AbstractCegarLoop]: Abstraction has 172 states and 209 transitions. [2023-02-17 05:50:28,278 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 05:50:28,279 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 209 transitions. [2023-02-17 05:50:28,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-02-17 05:50:28,279 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 05:50:28,279 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 05:50:28,280 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-02-17 05:50:28,280 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 05:50:28,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 05:50:28,280 INFO L85 PathProgramCache]: Analyzing trace with hash 1234303898, now seen corresponding path program 1 times [2023-02-17 05:50:28,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 05:50:28,281 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547777495] [2023-02-17 05:50:28,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 05:50:28,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 05:50:28,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 05:50:29,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 05:50:29,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 05:50:29,477 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 05:50:29,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 05:50:29,477 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [547777495] [2023-02-17 05:50:29,477 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [547777495] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 05:50:29,478 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 05:50:29,478 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-02-17 05:50:29,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644924451] [2023-02-17 05:50:29,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 05:50:29,478 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-02-17 05:50:29,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 05:50:29,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-02-17 05:50:29,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2023-02-17 05:50:29,480 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 05:50:30,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 05:50:30,392 INFO L93 Difference]: Finished difference Result 274 states and 329 transitions. [2023-02-17 05:50:30,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-02-17 05:50:30,393 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 05:50:30,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 05:50:30,394 INFO L225 Difference]: With dead ends: 274 [2023-02-17 05:50:30,395 INFO L226 Difference]: Without dead ends: 271 [2023-02-17 05:50:30,395 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 05:50:30,396 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 05:50:30,396 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 05:50:30,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2023-02-17 05:50:30,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 253. [2023-02-17 05:50:30,452 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 05:50:30,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 309 transitions. [2023-02-17 05:50:30,453 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 309 transitions. Word has length 27 [2023-02-17 05:50:30,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 05:50:30,454 INFO L495 AbstractCegarLoop]: Abstraction has 253 states and 309 transitions. [2023-02-17 05:50:30,454 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 05:50:30,454 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 309 transitions. [2023-02-17 05:50:30,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-02-17 05:50:30,455 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 05:50:30,455 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 05:50:30,456 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-02-17 05:50:30,456 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 05:50:30,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 05:50:30,456 INFO L85 PathProgramCache]: Analyzing trace with hash 1680148119, now seen corresponding path program 1 times [2023-02-17 05:50:30,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 05:50:30,457 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1341788000] [2023-02-17 05:50:30,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 05:50:30,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 05:50:30,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 05:50:30,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 05:50:30,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 05:50:31,166 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 05:50:31,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 05:50:31,166 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1341788000] [2023-02-17 05:50:31,166 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1341788000] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 05:50:31,167 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 05:50:31,171 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-02-17 05:50:31,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345162355] [2023-02-17 05:50:31,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 05:50:31,173 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-02-17 05:50:31,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 05:50:31,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-02-17 05:50:31,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2023-02-17 05:50:31,174 INFO L87 Difference]: Start difference. First operand 253 states and 309 transitions. Second operand has 12 states, 12 states have (on average 2.1666666666666665) internal successors, (26), 8 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 05:50:31,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 05:50:31,991 INFO L93 Difference]: Finished difference Result 273 states and 327 transitions. [2023-02-17 05:50:31,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-02-17 05:50:31,996 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.1666666666666665) internal successors, (26), 8 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 05:50:31,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 05:50:31,997 INFO L225 Difference]: With dead ends: 273 [2023-02-17 05:50:31,998 INFO L226 Difference]: Without dead ends: 270 [2023-02-17 05:50:31,998 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=88, Invalid=292, Unknown=0, NotChecked=0, Total=380 [2023-02-17 05:50:31,999 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 345 mSDsluCounter, 205 mSDsCounter, 0 mSdLazyCounter, 857 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 348 SdHoareTripleChecker+Valid, 237 SdHoareTripleChecker+Invalid, 902 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 857 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-02-17 05:50:31,999 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [348 Valid, 237 Invalid, 902 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 857 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-02-17 05:50:32,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2023-02-17 05:50:32,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 253. [2023-02-17 05:50:32,053 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 05:50:32,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 308 transitions. [2023-02-17 05:50:32,055 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 308 transitions. Word has length 30 [2023-02-17 05:50:32,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 05:50:32,055 INFO L495 AbstractCegarLoop]: Abstraction has 253 states and 308 transitions. [2023-02-17 05:50:32,056 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.1666666666666665) internal successors, (26), 8 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 05:50:32,056 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 308 transitions. [2023-02-17 05:50:32,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-02-17 05:50:32,057 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 05:50:32,057 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 05:50:32,057 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-02-17 05:50:32,057 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 05:50:32,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 05:50:32,058 INFO L85 PathProgramCache]: Analyzing trace with hash -493122043, now seen corresponding path program 1 times [2023-02-17 05:50:32,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 05:50:32,058 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1870645039] [2023-02-17 05:50:32,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 05:50:32,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 05:50:32,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 05:50:32,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 05:50:32,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 05:50:33,359 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 05:50:33,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 05:50:33,360 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1870645039] [2023-02-17 05:50:33,360 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1870645039] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 05:50:33,360 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 05:50:33,360 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-02-17 05:50:33,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142599069] [2023-02-17 05:50:33,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 05:50:33,361 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-02-17 05:50:33,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 05:50:33,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-02-17 05:50:33,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2023-02-17 05:50:33,362 INFO L87 Difference]: Start difference. First operand 253 states and 308 transitions. Second operand has 12 states, 12 states have (on average 2.4166666666666665) internal successors, (29), 8 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 05:50:34,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 05:50:34,344 INFO L93 Difference]: Finished difference Result 272 states and 325 transitions. [2023-02-17 05:50:34,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-02-17 05:50:34,345 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.4166666666666665) internal successors, (29), 8 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 05:50:34,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 05:50:34,347 INFO L225 Difference]: With dead ends: 272 [2023-02-17 05:50:34,347 INFO L226 Difference]: Without dead ends: 269 [2023-02-17 05:50:34,347 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=276, Unknown=0, NotChecked=0, Total=342 [2023-02-17 05:50:34,348 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 355 mSDsluCounter, 216 mSDsCounter, 0 mSdLazyCounter, 1056 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 358 SdHoareTripleChecker+Valid, 249 SdHoareTripleChecker+Invalid, 1099 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 1056 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-02-17 05:50:34,348 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [358 Valid, 249 Invalid, 1099 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 1056 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-02-17 05:50:34,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2023-02-17 05:50:34,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 253. [2023-02-17 05:50:34,389 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 05:50:34,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 307 transitions. [2023-02-17 05:50:34,391 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 307 transitions. Word has length 33 [2023-02-17 05:50:34,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 05:50:34,393 INFO L495 AbstractCegarLoop]: Abstraction has 253 states and 307 transitions. [2023-02-17 05:50:34,393 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.4166666666666665) internal successors, (29), 8 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 05:50:34,393 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 307 transitions. [2023-02-17 05:50:34,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-02-17 05:50:34,398 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 05:50:34,399 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 05:50:34,399 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-02-17 05:50:34,399 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 05:50:34,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 05:50:34,400 INFO L85 PathProgramCache]: Analyzing trace with hash -2033122620, now seen corresponding path program 1 times [2023-02-17 05:50:34,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 05:50:34,400 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1803141927] [2023-02-17 05:50:34,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 05:50:34,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 05:50:34,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 05:50:35,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 05:50:35,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 05:50:35,763 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 05:50:35,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 05:50:35,764 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1803141927] [2023-02-17 05:50:35,764 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1803141927] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 05:50:35,764 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 05:50:35,764 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-02-17 05:50:35,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159770387] [2023-02-17 05:50:35,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 05:50:35,765 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-02-17 05:50:35,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 05:50:35,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-02-17 05:50:35,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2023-02-17 05:50:35,766 INFO L87 Difference]: Start difference. First operand 253 states and 307 transitions. Second operand has 12 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 8 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 05:50:36,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 05:50:36,831 INFO L93 Difference]: Finished difference Result 271 states and 323 transitions. [2023-02-17 05:50:36,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-02-17 05:50:36,831 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 8 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 05:50:36,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 05:50:36,834 INFO L225 Difference]: With dead ends: 271 [2023-02-17 05:50:36,834 INFO L226 Difference]: Without dead ends: 268 [2023-02-17 05:50:36,835 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=276, Unknown=0, NotChecked=0, Total=342 [2023-02-17 05:50:36,835 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 333 mSDsluCounter, 238 mSDsCounter, 0 mSdLazyCounter, 1082 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 336 SdHoareTripleChecker+Valid, 271 SdHoareTripleChecker+Invalid, 1120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 1082 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-02-17 05:50:36,836 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [336 Valid, 271 Invalid, 1120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 1082 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-02-17 05:50:36,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2023-02-17 05:50:36,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 253. [2023-02-17 05:50:36,874 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 05:50:36,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 306 transitions. [2023-02-17 05:50:36,876 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 306 transitions. Word has length 36 [2023-02-17 05:50:36,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 05:50:36,877 INFO L495 AbstractCegarLoop]: Abstraction has 253 states and 306 transitions. [2023-02-17 05:50:36,877 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 8 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 05:50:36,877 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 306 transitions. [2023-02-17 05:50:36,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-02-17 05:50:36,880 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 05:50:36,880 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 05:50:36,881 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-02-17 05:50:36,881 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 05:50:36,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 05:50:36,881 INFO L85 PathProgramCache]: Analyzing trace with hash -1335339115, now seen corresponding path program 1 times [2023-02-17 05:50:36,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 05:50:36,882 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1483213376] [2023-02-17 05:50:36,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 05:50:36,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 05:50:36,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 05:50:37,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 05:50:37,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 05:50:37,730 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 05:50:37,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 05:50:37,730 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1483213376] [2023-02-17 05:50:37,730 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1483213376] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 05:50:37,731 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 05:50:37,732 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-02-17 05:50:37,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363870727] [2023-02-17 05:50:37,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 05:50:37,733 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-02-17 05:50:37,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 05:50:37,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-02-17 05:50:37,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2023-02-17 05:50:37,734 INFO L87 Difference]: Start difference. First operand 253 states and 306 transitions. Second operand has 13 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 9 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 05:50:38,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 05:50:38,652 INFO L93 Difference]: Finished difference Result 270 states and 321 transitions. [2023-02-17 05:50:38,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-02-17 05:50:38,653 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 9 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 05:50:38,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 05:50:38,654 INFO L225 Difference]: With dead ends: 270 [2023-02-17 05:50:38,654 INFO L226 Difference]: Without dead ends: 267 [2023-02-17 05:50:38,655 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=131, Invalid=469, Unknown=0, NotChecked=0, Total=600 [2023-02-17 05:50:38,655 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 414 mSDsluCounter, 256 mSDsCounter, 0 mSdLazyCounter, 1013 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 417 SdHoareTripleChecker+Valid, 288 SdHoareTripleChecker+Invalid, 1063 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 1013 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-02-17 05:50:38,656 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [417 Valid, 288 Invalid, 1063 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 1013 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-02-17 05:50:38,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2023-02-17 05:50:38,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 253. [2023-02-17 05:50:38,700 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 05:50:38,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 305 transitions. [2023-02-17 05:50:38,702 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 305 transitions. Word has length 39 [2023-02-17 05:50:38,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 05:50:38,702 INFO L495 AbstractCegarLoop]: Abstraction has 253 states and 305 transitions. [2023-02-17 05:50:38,702 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 9 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 05:50:38,703 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 305 transitions. [2023-02-17 05:50:38,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2023-02-17 05:50:38,703 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 05:50:38,704 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 05:50:38,704 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-02-17 05:50:38,704 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 05:50:38,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 05:50:38,704 INFO L85 PathProgramCache]: Analyzing trace with hash 1154705564, now seen corresponding path program 1 times [2023-02-17 05:50:38,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 05:50:38,705 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1333166565] [2023-02-17 05:50:38,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 05:50:38,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 05:50:38,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 05:50:39,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 05:50:39,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 05:50:40,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-02-17 05:50:40,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 05:50:40,593 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 05:50:40,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 05:50:40,594 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1333166565] [2023-02-17 05:50:40,594 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1333166565] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 05:50:40,594 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1476859629] [2023-02-17 05:50:40,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 05:50:40,595 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 05:50:40,595 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 05:50:40,598 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 05:50:40,602 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 05:50:40,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 05:50:40,780 INFO L263 TraceCheckSpWp]: Trace formula consists of 424 conjuncts, 117 conjunts are in the unsatisfiable core [2023-02-17 05:50:40,805 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 05:50:40,910 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-17 05:50:40,910 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 26 treesize of output 46 [2023-02-17 05:50:40,952 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 21 treesize of output 21 [2023-02-17 05:50:40,956 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 21 treesize of output 21 [2023-02-17 05:50:40,972 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 15 treesize of output 7 [2023-02-17 05:50:40,982 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 15 treesize of output 7 [2023-02-17 05:50:41,064 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-17 05:50:41,065 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 61 treesize of output 158 [2023-02-17 05:50:41,078 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 296 treesize of output 236 [2023-02-17 05:50:41,126 WARN L207 Elim1Store]: Array PQE input equivalent to false [2023-02-17 05:50:41,128 WARN L207 Elim1Store]: Array PQE input equivalent to false [2023-02-17 05:50:41,131 WARN L207 Elim1Store]: Array PQE input equivalent to false [2023-02-17 05:50:41,133 WARN L207 Elim1Store]: Array PQE input equivalent to false [2023-02-17 05:50:41,135 WARN L207 Elim1Store]: Array PQE input equivalent to false [2023-02-17 05:50:41,136 WARN L207 Elim1Store]: Array PQE input equivalent to false [2023-02-17 05:50:41,138 WARN L207 Elim1Store]: Array PQE input equivalent to false [2023-02-17 05:50:41,141 WARN L207 Elim1Store]: Array PQE input equivalent to false [2023-02-17 05:50:41,148 WARN L319 FreeRefinementEngine]: Global settings require throwing the following exception [2023-02-17 05:50:41,156 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-02-17 05:50:41,356 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 05:50:41,357 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: no need to replace index at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.DerPreprocessor.constructReplacementForSelectCase(DerPreprocessor.java:333) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.DerPreprocessor.constructDerEnabler(DerPreprocessor.java:187) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.DerPreprocessor.(DerPreprocessor.java:144) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.ElimStorePlain.applyComplexEliminationRules(ElimStorePlain.java:353) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminate(DualJunctionSaa.java:190) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne3(DualJunctionSaa.java:172) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne2(DualJunctionSaa.java:151) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne1(DualJunctionSaa.java:140) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne0(DualJunctionSaa.java:122) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne(DualJunctionSaa.java:108) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryExhaustivelyToEliminate(DualJunctionSaa.java:93) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminate(DualJunctionSaa.java:88) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToEliminateOne(QuantifierPusher.java:627) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.applyNewEliminationTechniquesExhaustively(QuantifierPusher.java:606) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.applyDualJunctionEliminationTechniques(QuantifierPusher.java:528) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective(QuantifierPusher.java:332) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:188) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine$ApplicationTermTask.doStep(TermContextTransformationEngine.java:169) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:77) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:61) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:295) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:281) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.PartialQuantifierElimination.eliminate(PartialQuantifierElimination.java:90) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer$QuantifierEliminationPostprocessor.postprocess(IterativePredicateTransformer.java:238) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:420) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeStrongestPostconditionSequence(IterativePredicateTransformer.java:199) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:299) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:185) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:163) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:262) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2023-02-17 05:50:41,362 INFO L158 Benchmark]: Toolchain (without parser) took 17571.40ms. Allocated memory was 117.4MB in the beginning and 402.7MB in the end (delta: 285.2MB). Free memory was 71.5MB in the beginning and 295.2MB in the end (delta: -223.7MB). Peak memory consumption was 63.5MB. Max. memory is 16.1GB. [2023-02-17 05:50:41,362 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 117.4MB. Free memory was 91.3MB in the beginning and 91.2MB in the end (delta: 78.2kB). There was no memory consumed. Max. memory is 16.1GB. [2023-02-17 05:50:41,362 INFO L158 Benchmark]: CACSL2BoogieTranslator took 603.62ms. Allocated memory was 117.4MB in the beginning and 151.0MB in the end (delta: 33.6MB). Free memory was 71.2MB in the beginning and 119.9MB in the end (delta: -48.7MB). Peak memory consumption was 34.0MB. Max. memory is 16.1GB. [2023-02-17 05:50:41,363 INFO L158 Benchmark]: Boogie Procedure Inliner took 67.52ms. Allocated memory is still 151.0MB. Free memory was 119.9MB in the beginning and 119.8MB in the end (delta: 80.4kB). Peak memory consumption was 5.7MB. Max. memory is 16.1GB. [2023-02-17 05:50:41,363 INFO L158 Benchmark]: Boogie Preprocessor took 71.42ms. Allocated memory is still 151.0MB. Free memory was 119.8MB in the beginning and 117.1MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-17 05:50:41,363 INFO L158 Benchmark]: RCFGBuilder took 568.22ms. Allocated memory is still 151.0MB. Free memory was 117.1MB in the beginning and 93.3MB in the end (delta: 23.8MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2023-02-17 05:50:41,363 INFO L158 Benchmark]: TraceAbstraction took 16255.38ms. Allocated memory was 151.0MB in the beginning and 402.7MB in the end (delta: 251.7MB). Free memory was 92.6MB in the beginning and 295.2MB in the end (delta: -202.6MB). Peak memory consumption was 49.0MB. Max. memory is 16.1GB. [2023-02-17 05:50:41,365 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 117.4MB. Free memory was 91.3MB in the beginning and 91.2MB in the end (delta: 78.2kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 603.62ms. Allocated memory was 117.4MB in the beginning and 151.0MB in the end (delta: 33.6MB). Free memory was 71.2MB in the beginning and 119.9MB in the end (delta: -48.7MB). Peak memory consumption was 34.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 67.52ms. Allocated memory is still 151.0MB. Free memory was 119.9MB in the beginning and 119.8MB in the end (delta: 80.4kB). Peak memory consumption was 5.7MB. Max. memory is 16.1GB. * Boogie Preprocessor took 71.42ms. Allocated memory is still 151.0MB. Free memory was 119.8MB in the beginning and 117.1MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 568.22ms. Allocated memory is still 151.0MB. Free memory was 117.1MB in the beginning and 93.3MB in the end (delta: 23.8MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * TraceAbstraction took 16255.38ms. Allocated memory was 151.0MB in the beginning and 402.7MB in the end (delta: 251.7MB). Free memory was 92.6MB in the beginning and 295.2MB in the end (delta: -202.6MB). Peak memory consumption was 49.0MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: no need to replace index de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: no need to replace index: de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.DerPreprocessor.constructReplacementForSelectCase(DerPreprocessor.java:333) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2023-02-17 05:50:41,389 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### 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-1.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.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 a38de44f112a10364737c35b840e673503a211a020b9f494a50e4a32c8fe31c0 --- Real Ultimate output --- This is Ultimate 0.2.2-?-574ddb4 [2023-02-17 05:50:43,532 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-17 05:50:43,534 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-17 05:50:43,563 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-17 05:50:43,564 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-17 05:50:43,567 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-17 05:50:43,569 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-17 05:50:43,571 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-17 05:50:43,579 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-17 05:50:43,582 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-17 05:50:43,584 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-17 05:50:43,587 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-17 05:50:43,587 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-17 05:50:43,593 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-17 05:50:43,594 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-17 05:50:43,595 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-17 05:50:43,596 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-17 05:50:43,597 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-17 05:50:43,599 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-17 05:50:43,601 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-17 05:50:43,605 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-17 05:50:43,606 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-17 05:50:43,607 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-17 05:50:43,608 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-17 05:50:43,612 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-17 05:50:43,612 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-17 05:50:43,613 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-17 05:50:43,615 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-17 05:50:43,615 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-17 05:50:43,616 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-17 05:50:43,617 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-17 05:50:43,618 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-17 05:50:43,620 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-17 05:50:43,621 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-17 05:50:43,622 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-17 05:50:43,622 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-17 05:50:43,622 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-17 05:50:43,623 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-17 05:50:43,623 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-17 05:50:43,624 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-17 05:50:43,624 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-17 05:50:43,625 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-02-17 05:50:43,665 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-17 05:50:43,665 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-17 05:50:43,666 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-17 05:50:43,666 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-17 05:50:43,666 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-17 05:50:43,667 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-17 05:50:43,667 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-17 05:50:43,667 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-17 05:50:43,667 INFO L138 SettingsManager]: * Use SBE=true [2023-02-17 05:50:43,667 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-17 05:50:43,668 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-17 05:50:43,668 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-17 05:50:43,668 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-17 05:50:43,668 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-02-17 05:50:43,668 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-17 05:50:43,668 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-02-17 05:50:43,668 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-02-17 05:50:43,669 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2023-02-17 05:50:43,669 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-02-17 05:50:43,669 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-17 05:50:43,669 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-17 05:50:43,669 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-17 05:50:43,669 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-02-17 05:50:43,669 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-17 05:50:43,669 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-17 05:50:43,670 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-17 05:50:43,670 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-17 05:50:43,670 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-17 05:50:43,670 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-17 05:50:43,670 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-02-17 05:50:43,670 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2023-02-17 05:50:43,670 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-02-17 05:50:43,670 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-17 05:50:43,671 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-02-17 05:50:43,671 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-17 05:50:43,671 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-17 05:50:43,671 INFO L138 SettingsManager]: * Logic for external solver=AUFBV [2023-02-17 05:50:43,671 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-17 05:50:43,671 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a38de44f112a10364737c35b840e673503a211a020b9f494a50e4a32c8fe31c0 [2023-02-17 05:50:43,988 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-17 05:50:44,020 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-17 05:50:44,022 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-17 05:50:44,023 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-17 05:50:44,025 INFO L275 PluginConnector]: CDTParser initialized [2023-02-17 05:50:44,027 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/heap-manipulation/bubble_sort_linux-1.i [2023-02-17 05:50:45,222 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-17 05:50:45,525 INFO L351 CDTParser]: Found 1 translation units. [2023-02-17 05:50:45,525 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/heap-manipulation/bubble_sort_linux-1.i [2023-02-17 05:50:45,548 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fe70c19a2/304a928ea9e0472992edb03497805b82/FLAG14fbf1ec8 [2023-02-17 05:50:45,563 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fe70c19a2/304a928ea9e0472992edb03497805b82 [2023-02-17 05:50:45,567 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-17 05:50:45,568 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-17 05:50:45,569 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-17 05:50:45,569 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-17 05:50:45,574 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-17 05:50:45,576 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.02 05:50:45" (1/1) ... [2023-02-17 05:50:45,576 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22cc0b1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 05:50:45, skipping insertion in model container [2023-02-17 05:50:45,577 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.02 05:50:45" (1/1) ... [2023-02-17 05:50:45,582 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-17 05:50:45,621 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-17 05:50:45,919 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-1.i[33822,33835] [2023-02-17 05:50:45,973 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-17 05:50:45,987 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-02-17 05:50:45,998 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-17 05:50:46,022 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-1.i[33822,33835] [2023-02-17 05:50:46,035 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-17 05:50:46,039 INFO L203 MainTranslator]: Completed pre-run [2023-02-17 05:50:46,078 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-1.i[33822,33835] [2023-02-17 05:50:46,093 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-17 05:50:46,156 INFO L208 MainTranslator]: Completed translation [2023-02-17 05:50:46,157 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 05:50:46 WrapperNode [2023-02-17 05:50:46,157 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-17 05:50:46,158 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-17 05:50:46,158 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-17 05:50:46,158 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-17 05:50:46,164 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 05:50:46" (1/1) ... [2023-02-17 05:50:46,197 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 05:50:46" (1/1) ... [2023-02-17 05:50:46,232 INFO L138 Inliner]: procedures = 235, calls = 75, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 113 [2023-02-17 05:50:46,233 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-17 05:50:46,234 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-17 05:50:46,234 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-17 05:50:46,234 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-17 05:50:46,241 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 05:50:46" (1/1) ... [2023-02-17 05:50:46,243 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 05:50:46" (1/1) ... [2023-02-17 05:50:46,247 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 05:50:46" (1/1) ... [2023-02-17 05:50:46,248 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 05:50:46" (1/1) ... [2023-02-17 05:50:46,263 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 05:50:46" (1/1) ... [2023-02-17 05:50:46,276 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 05:50:46" (1/1) ... [2023-02-17 05:50:46,282 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 05:50:46" (1/1) ... [2023-02-17 05:50:46,288 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 05:50:46" (1/1) ... [2023-02-17 05:50:46,292 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-17 05:50:46,293 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-17 05:50:46,293 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-17 05:50:46,293 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-17 05:50:46,294 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 05:50:46" (1/1) ... [2023-02-17 05:50:46,302 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-17 05:50:46,314 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 05:50:46,329 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 05:50:46,336 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 05:50:46,365 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-02-17 05:50:46,366 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-02-17 05:50:46,366 INFO L130 BoogieDeclarations]: Found specification of procedure inspect [2023-02-17 05:50:46,366 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect [2023-02-17 05:50:46,366 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-02-17 05:50:46,366 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-02-17 05:50:46,366 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-02-17 05:50:46,366 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-02-17 05:50:46,367 INFO L130 BoogieDeclarations]: Found specification of procedure val_from_node [2023-02-17 05:50:46,367 INFO L138 BoogieDeclarations]: Found implementation of procedure val_from_node [2023-02-17 05:50:46,367 INFO L130 BoogieDeclarations]: Found specification of procedure fail [2023-02-17 05:50:46,367 INFO L138 BoogieDeclarations]: Found implementation of procedure fail [2023-02-17 05:50:46,367 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-02-17 05:50:46,367 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-17 05:50:46,368 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-02-17 05:50:46,368 INFO L130 BoogieDeclarations]: Found specification of procedure list_add [2023-02-17 05:50:46,368 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add [2023-02-17 05:50:46,368 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-17 05:50:46,368 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-17 05:50:46,545 INFO L235 CfgBuilder]: Building ICFG [2023-02-17 05:50:46,547 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-17 05:50:47,050 INFO L276 CfgBuilder]: Performing block encoding [2023-02-17 05:50:47,060 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-17 05:50:47,060 INFO L300 CfgBuilder]: Removed 41 assume(true) statements. [2023-02-17 05:50:47,062 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.02 05:50:47 BoogieIcfgContainer [2023-02-17 05:50:47,062 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-17 05:50:47,064 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-17 05:50:47,064 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-17 05:50:47,066 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-17 05:50:47,067 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.02 05:50:45" (1/3) ... [2023-02-17 05:50:47,067 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31a47adf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.02 05:50:47, skipping insertion in model container [2023-02-17 05:50:47,067 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 05:50:46" (2/3) ... [2023-02-17 05:50:47,068 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31a47adf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.02 05:50:47, skipping insertion in model container [2023-02-17 05:50:47,068 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.02 05:50:47" (3/3) ... [2023-02-17 05:50:47,069 INFO L112 eAbstractionObserver]: Analyzing ICFG bubble_sort_linux-1.i [2023-02-17 05:50:47,084 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-17 05:50:47,085 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-02-17 05:50:47,139 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-17 05:50:47,145 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;@fcf9662, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-17 05:50:47,145 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-02-17 05:50:47,151 INFO L276 IsEmpty]: Start isEmpty. Operand has 117 states, 88 states have (on average 1.75) internal successors, (154), 107 states have internal predecessors, (154), 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 05:50:47,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-02-17 05:50:47,157 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 05:50:47,157 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 05:50:47,158 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 05:50:47,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 05:50:47,165 INFO L85 PathProgramCache]: Analyzing trace with hash 844459879, now seen corresponding path program 1 times [2023-02-17 05:50:47,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-17 05:50:47,176 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [740362148] [2023-02-17 05:50:47,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 05:50:47,177 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-17 05:50:47,178 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-17 05:50:47,183 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-17 05:50:47,184 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-02-17 05:50:47,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 05:50:47,274 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 1 conjunts are in the unsatisfiable core [2023-02-17 05:50:47,277 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 05:50:47,295 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 05:50:47,295 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-17 05:50:47,296 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-17 05:50:47,296 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [740362148] [2023-02-17 05:50:47,297 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [740362148] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 05:50:47,297 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 05:50:47,297 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-17 05:50:47,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004142474] [2023-02-17 05:50:47,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 05:50:47,310 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-02-17 05:50:47,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-17 05:50:47,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-02-17 05:50:47,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-17 05:50:47,358 INFO L87 Difference]: Start difference. First operand has 117 states, 88 states have (on average 1.75) internal successors, (154), 107 states have internal predecessors, (154), 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 05:50:47,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 05:50:47,422 INFO L93 Difference]: Finished difference Result 228 states and 395 transitions. [2023-02-17 05:50:47,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-02-17 05:50:47,424 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 05:50:47,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 05:50:47,439 INFO L225 Difference]: With dead ends: 228 [2023-02-17 05:50:47,439 INFO L226 Difference]: Without dead ends: 106 [2023-02-17 05:50:47,447 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 [2023-02-17 05:50:47,452 INFO L413 NwaCegarLoop]: 135 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, 135 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 05:50:47,453 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-17 05:50:47,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2023-02-17 05:50:47,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 106. [2023-02-17 05:50:47,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 81 states have (on average 1.2469135802469136) internal successors, (101), 96 states have internal predecessors, (101), 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 05:50:47,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 127 transitions. [2023-02-17 05:50:47,504 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 127 transitions. Word has length 9 [2023-02-17 05:50:47,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 05:50:47,504 INFO L495 AbstractCegarLoop]: Abstraction has 106 states and 127 transitions. [2023-02-17 05:50:47,505 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 05:50:47,505 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 127 transitions. [2023-02-17 05:50:47,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-02-17 05:50:47,507 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 05:50:47,507 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] [2023-02-17 05:50:47,518 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-02-17 05:50:47,717 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-17 05:50:47,718 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 05:50:47,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 05:50:47,718 INFO L85 PathProgramCache]: Analyzing trace with hash 1622181416, now seen corresponding path program 1 times [2023-02-17 05:50:47,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-17 05:50:47,719 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1877210964] [2023-02-17 05:50:47,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 05:50:47,719 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-17 05:50:47,720 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-17 05:50:47,722 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-17 05:50:47,723 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-02-17 05:50:47,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 05:50:47,872 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 4 conjunts are in the unsatisfiable core [2023-02-17 05:50:47,875 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 05:50:47,926 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 05:50:47,926 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-17 05:50:47,927 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-17 05:50:47,927 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1877210964] [2023-02-17 05:50:47,927 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1877210964] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 05:50:47,927 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 05:50:47,927 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-17 05:50:47,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119928045] [2023-02-17 05:50:47,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 05:50:47,929 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-17 05:50:47,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-17 05:50:47,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-17 05:50:47,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-17 05:50:47,930 INFO L87 Difference]: Start difference. First operand 106 states and 127 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 3 states have internal predecessors, (16), 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 05:50:48,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 05:50:48,075 INFO L93 Difference]: Finished difference Result 108 states and 128 transitions. [2023-02-17 05:50:48,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-02-17 05:50:48,075 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 3 states have internal predecessors, (16), 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 20 [2023-02-17 05:50:48,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 05:50:48,079 INFO L225 Difference]: With dead ends: 108 [2023-02-17 05:50:48,079 INFO L226 Difference]: Without dead ends: 105 [2023-02-17 05:50:48,079 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-02-17 05:50:48,080 INFO L413 NwaCegarLoop]: 112 mSDtfsCounter, 171 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 172 SdHoareTripleChecker+Valid, 253 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-17 05:50:48,081 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [172 Valid, 253 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-17 05:50:48,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2023-02-17 05:50:48,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 105. [2023-02-17 05:50:48,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 81 states have (on average 1.2345679012345678) internal successors, (100), 95 states have internal predecessors, (100), 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 05:50:48,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 125 transitions. [2023-02-17 05:50:48,105 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 125 transitions. Word has length 20 [2023-02-17 05:50:48,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 05:50:48,106 INFO L495 AbstractCegarLoop]: Abstraction has 105 states and 125 transitions. [2023-02-17 05:50:48,107 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 3 states have internal predecessors, (16), 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 05:50:48,107 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 125 transitions. [2023-02-17 05:50:48,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-02-17 05:50:48,108 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 05:50:48,108 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] [2023-02-17 05:50:48,125 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-02-17 05:50:48,321 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-17 05:50:48,322 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 05:50:48,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 05:50:48,323 INFO L85 PathProgramCache]: Analyzing trace with hash -845475890, now seen corresponding path program 1 times [2023-02-17 05:50:48,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-17 05:50:48,323 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [37807431] [2023-02-17 05:50:48,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 05:50:48,324 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-17 05:50:48,324 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-17 05:50:48,325 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-17 05:50:48,331 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-02-17 05:50:48,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 05:50:48,540 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 25 conjunts are in the unsatisfiable core [2023-02-17 05:50:48,544 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 05:50:48,580 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-17 05:50:48,581 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 11 treesize of output 15 [2023-02-17 05:50:48,638 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-17 05:50:48,640 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 3 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 194 treesize of output 398 [2023-02-17 05:50:48,671 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 32 [2023-02-17 05:50:48,715 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 32 [2023-02-17 05:50:48,736 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 32