./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/list-properties/splice-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5fbdf5bf 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/list-properties/splice-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 22d654ad48908d2db90206c3276d568dc9029be1 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-5fbdf5b [2021-08-29 09:03:52,603 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-29 09:03:52,605 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-29 09:03:52,639 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-29 09:03:52,640 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-29 09:03:52,640 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-29 09:03:52,641 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-29 09:03:52,642 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-29 09:03:52,643 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-29 09:03:52,644 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-29 09:03:52,645 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-29 09:03:52,645 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-29 09:03:52,646 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-29 09:03:52,646 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-29 09:03:52,647 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-29 09:03:52,648 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-29 09:03:52,649 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-29 09:03:52,649 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-29 09:03:52,650 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-29 09:03:52,652 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-29 09:03:52,652 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-29 09:03:52,666 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-29 09:03:52,667 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-29 09:03:52,668 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-29 09:03:52,670 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-29 09:03:52,676 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-29 09:03:52,676 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-29 09:03:52,677 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-29 09:03:52,677 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-29 09:03:52,678 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-29 09:03:52,678 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-29 09:03:52,679 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-29 09:03:52,679 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-29 09:03:52,680 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-29 09:03:52,682 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-29 09:03:52,683 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-29 09:03:52,683 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-29 09:03:52,684 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-29 09:03:52,684 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-29 09:03:52,685 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-29 09:03:52,686 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-29 09:03:52,687 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-08-29 09:03:52,712 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-29 09:03:52,712 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-29 09:03:52,713 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-29 09:03:52,713 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-29 09:03:52,714 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-29 09:03:52,715 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-29 09:03:52,715 INFO L138 SettingsManager]: * Use SBE=true [2021-08-29 09:03:52,715 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-29 09:03:52,715 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-29 09:03:52,715 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-29 09:03:52,716 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-29 09:03:52,716 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-29 09:03:52,717 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-29 09:03:52,717 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-29 09:03:52,717 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-29 09:03:52,717 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-29 09:03:52,717 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-29 09:03:52,717 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-29 09:03:52,717 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-29 09:03:52,718 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-29 09:03:52,718 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-29 09:03:52,718 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-29 09:03:52,718 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-29 09:03:52,718 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-29 09:03:52,718 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-29 09:03:52,719 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-29 09:03:52,719 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-29 09:03:52,719 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-29 09:03:52,719 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-29 09:03:52,719 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-29 09:03:52,719 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 22d654ad48908d2db90206c3276d568dc9029be1 [2021-08-29 09:03:52,951 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-29 09:03:52,980 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-29 09:03:52,983 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-29 09:03:52,984 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-29 09:03:52,984 INFO L275 PluginConnector]: CDTParser initialized [2021-08-29 09:03:52,986 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/list-properties/splice-1.i [2021-08-29 09:03:53,031 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c0c2a6e3a/c0e27f81cc8b4e43bfec3915b02e4194/FLAG9060059fd [2021-08-29 09:03:53,400 INFO L306 CDTParser]: Found 1 translation units. [2021-08-29 09:03:53,406 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/list-properties/splice-1.i [2021-08-29 09:03:53,416 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c0c2a6e3a/c0e27f81cc8b4e43bfec3915b02e4194/FLAG9060059fd [2021-08-29 09:03:53,427 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c0c2a6e3a/c0e27f81cc8b4e43bfec3915b02e4194 [2021-08-29 09:03:53,429 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-29 09:03:53,430 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-29 09:03:53,431 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-29 09:03:53,431 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-29 09:03:53,434 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-29 09:03:53,434 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 09:03:53" (1/1) ... [2021-08-29 09:03:53,435 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@472b7f4c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:03:53, skipping insertion in model container [2021-08-29 09:03:53,435 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 09:03:53" (1/1) ... [2021-08-29 09:03:53,440 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-29 09:03:53,460 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-29 09:03:53,715 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/list-properties/splice-1.i[23721,23734] [2021-08-29 09:03:53,718 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-29 09:03:53,727 INFO L203 MainTranslator]: Completed pre-run [2021-08-29 09:03:53,762 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/list-properties/splice-1.i[23721,23734] [2021-08-29 09:03:53,763 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-29 09:03:53,781 INFO L208 MainTranslator]: Completed translation [2021-08-29 09:03:53,782 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:03:53 WrapperNode [2021-08-29 09:03:53,782 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-29 09:03:53,783 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-29 09:03:53,783 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-29 09:03:53,783 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-29 09:03:53,787 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:03:53" (1/1) ... [2021-08-29 09:03:53,796 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:03:53" (1/1) ... [2021-08-29 09:03:53,810 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-29 09:03:53,813 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-29 09:03:53,813 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-29 09:03:53,813 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-29 09:03:53,819 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:03:53" (1/1) ... [2021-08-29 09:03:53,820 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:03:53" (1/1) ... [2021-08-29 09:03:53,837 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:03:53" (1/1) ... [2021-08-29 09:03:53,838 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:03:53" (1/1) ... [2021-08-29 09:03:53,843 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:03:53" (1/1) ... [2021-08-29 09:03:53,851 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:03:53" (1/1) ... [2021-08-29 09:03:53,855 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:03:53" (1/1) ... [2021-08-29 09:03:53,864 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-29 09:03:53,865 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-29 09:03:53,865 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-29 09:03:53,865 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-29 09:03:53,866 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:03:53" (1/1) ... [2021-08-29 09:03:53,872 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-29 09:03:53,881 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 09:03:53,891 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) [2021-08-29 09:03:53,898 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 [2021-08-29 09:03:53,923 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-08-29 09:03:53,923 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-08-29 09:03:53,923 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-08-29 09:03:53,923 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-08-29 09:03:53,923 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-29 09:03:53,923 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-08-29 09:03:53,923 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-29 09:03:53,923 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-29 09:03:53,923 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-29 09:03:54,104 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-29 09:03:54,105 INFO L299 CfgBuilder]: Removed 12 assume(true) statements. [2021-08-29 09:03:54,106 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 09:03:54 BoogieIcfgContainer [2021-08-29 09:03:54,106 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-29 09:03:54,107 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-29 09:03:54,107 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-29 09:03:54,109 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-29 09:03:54,113 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.08 09:03:53" (1/3) ... [2021-08-29 09:03:54,113 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12cf0b34 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 09:03:54, skipping insertion in model container [2021-08-29 09:03:54,113 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:03:53" (2/3) ... [2021-08-29 09:03:54,114 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12cf0b34 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 09:03:54, skipping insertion in model container [2021-08-29 09:03:54,114 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 09:03:54" (3/3) ... [2021-08-29 09:03:54,115 INFO L111 eAbstractionObserver]: Analyzing ICFG splice-1.i [2021-08-29 09:03:54,121 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-29 09:03:54,121 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-08-29 09:03:54,149 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-29 09:03:54,153 INFO L339 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, mConcurrency=FINITE_AUTOMATA, 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, mLoopAccelerationTechnique=FAST_UPR [2021-08-29 09:03:54,154 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-08-29 09:03:54,163 INFO L276 IsEmpty]: Start isEmpty. Operand has 29 states, 27 states have (on average 1.5925925925925926) internal successors, (43), 28 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 09:03:54,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-08-29 09:03:54,167 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 09:03:54,167 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 09:03:54,168 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 09:03:54,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 09:03:54,172 INFO L82 PathProgramCache]: Analyzing trace with hash -427823588, now seen corresponding path program 1 times [2021-08-29 09:03:54,178 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 09:03:54,178 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1576770377] [2021-08-29 09:03:54,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 09:03:54,179 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 09:03:54,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 09:03:54,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 09:03:54,286 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 09:03:54,286 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1576770377] [2021-08-29 09:03:54,287 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1576770377] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 09:03:54,288 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 09:03:54,288 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-29 09:03:54,289 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092896795] [2021-08-29 09:03:54,292 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-08-29 09:03:54,292 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 09:03:54,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-08-29 09:03:54,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-08-29 09:03:54,316 INFO L87 Difference]: Start difference. First operand has 29 states, 27 states have (on average 1.5925925925925926) internal successors, (43), 28 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 09:03:54,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 09:03:54,398 INFO L93 Difference]: Finished difference Result 46 states and 69 transitions. [2021-08-29 09:03:54,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-08-29 09:03:54,400 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-08-29 09:03:54,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 09:03:54,410 INFO L225 Difference]: With dead ends: 46 [2021-08-29 09:03:54,410 INFO L226 Difference]: Without dead ends: 23 [2021-08-29 09:03:54,413 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.03ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-08-29 09:03:54,416 INFO L928 BasicCegarLoop]: 2 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 48.60ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.04ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 59.85ms IncrementalHoareTripleChecker+Time [2021-08-29 09:03:54,417 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 2 Invalid, 36 Unknown, 0 Unchecked, 1.04ms Time], IncrementalHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 59.85ms Time] [2021-08-29 09:03:54,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2021-08-29 09:03:54,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2021-08-29 09:03:54,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.3181818181818181) internal successors, (29), 22 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 09:03:54,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 29 transitions. [2021-08-29 09:03:54,442 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 29 transitions. Word has length 12 [2021-08-29 09:03:54,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 09:03:54,443 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 29 transitions. [2021-08-29 09:03:54,443 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 09:03:54,443 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 29 transitions. [2021-08-29 09:03:54,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-08-29 09:03:54,444 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 09:03:54,444 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 09:03:54,444 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-29 09:03:54,445 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 09:03:54,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 09:03:54,447 INFO L82 PathProgramCache]: Analyzing trace with hash 1140031955, now seen corresponding path program 1 times [2021-08-29 09:03:54,448 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 09:03:54,448 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1629393999] [2021-08-29 09:03:54,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 09:03:54,448 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 09:03:54,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 09:03:54,536 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 09:03:54,536 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 09:03:54,537 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1629393999] [2021-08-29 09:03:54,537 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1629393999] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 09:03:54,537 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 09:03:54,537 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-29 09:03:54,538 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454176495] [2021-08-29 09:03:54,538 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-29 09:03:54,539 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 09:03:54,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-29 09:03:54,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-29 09:03:54,540 INFO L87 Difference]: Start difference. First operand 23 states and 29 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 09:03:54,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 09:03:54,636 INFO L93 Difference]: Finished difference Result 40 states and 51 transitions. [2021-08-29 09:03:54,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-29 09:03:54,636 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-08-29 09:03:54,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 09:03:54,637 INFO L225 Difference]: With dead ends: 40 [2021-08-29 09:03:54,637 INFO L226 Difference]: Without dead ends: 33 [2021-08-29 09:03:54,640 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 25.07ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-29 09:03:54,641 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 10 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 54.20ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.73ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 68.29ms IncrementalHoareTripleChecker+Time [2021-08-29 09:03:54,642 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 0 Invalid, 86 Unknown, 0 Unchecked, 1.73ms Time], IncrementalHoareTripleChecker [1 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 68.29ms Time] [2021-08-29 09:03:54,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2021-08-29 09:03:54,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 28. [2021-08-29 09:03:54,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 27 states have (on average 1.3333333333333333) internal successors, (36), 27 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 09:03:54,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 36 transitions. [2021-08-29 09:03:54,651 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 36 transitions. Word has length 14 [2021-08-29 09:03:54,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 09:03:54,651 INFO L470 AbstractCegarLoop]: Abstraction has 28 states and 36 transitions. [2021-08-29 09:03:54,652 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 09:03:54,652 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 36 transitions. [2021-08-29 09:03:54,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-08-29 09:03:54,653 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 09:03:54,653 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 09:03:54,653 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-29 09:03:54,654 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 09:03:54,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 09:03:54,655 INFO L82 PathProgramCache]: Analyzing trace with hash 352372424, now seen corresponding path program 1 times [2021-08-29 09:03:54,656 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 09:03:54,658 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138370867] [2021-08-29 09:03:54,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 09:03:54,658 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 09:03:54,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 09:03:54,721 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 09:03:54,722 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 09:03:54,722 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2138370867] [2021-08-29 09:03:54,722 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2138370867] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 09:03:54,722 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 09:03:54,722 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-29 09:03:54,722 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184652025] [2021-08-29 09:03:54,723 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-29 09:03:54,723 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 09:03:54,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-29 09:03:54,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-29 09:03:54,724 INFO L87 Difference]: Start difference. First operand 28 states and 36 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 09:03:54,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 09:03:54,805 INFO L93 Difference]: Finished difference Result 47 states and 60 transitions. [2021-08-29 09:03:54,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-29 09:03:54,806 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-08-29 09:03:54,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 09:03:54,807 INFO L225 Difference]: With dead ends: 47 [2021-08-29 09:03:54,807 INFO L226 Difference]: Without dead ends: 39 [2021-08-29 09:03:54,808 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 12.99ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-29 09:03:54,809 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 6 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 57.54ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.82ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 67.26ms IncrementalHoareTripleChecker+Time [2021-08-29 09:03:54,809 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 0 Invalid, 88 Unknown, 0 Unchecked, 0.82ms Time], IncrementalHoareTripleChecker [3 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 67.26ms Time] [2021-08-29 09:03:54,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2021-08-29 09:03:54,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 37. [2021-08-29 09:03:54,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 36 states have (on average 1.3611111111111112) internal successors, (49), 36 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 09:03:54,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 49 transitions. [2021-08-29 09:03:54,813 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 49 transitions. Word has length 16 [2021-08-29 09:03:54,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 09:03:54,814 INFO L470 AbstractCegarLoop]: Abstraction has 37 states and 49 transitions. [2021-08-29 09:03:54,814 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 09:03:54,814 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 49 transitions. [2021-08-29 09:03:54,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-08-29 09:03:54,815 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 09:03:54,815 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 09:03:54,815 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-08-29 09:03:54,815 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 09:03:54,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 09:03:54,816 INFO L82 PathProgramCache]: Analyzing trace with hash -1051666739, now seen corresponding path program 1 times [2021-08-29 09:03:54,816 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 09:03:54,816 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694894624] [2021-08-29 09:03:54,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 09:03:54,816 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 09:03:54,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 09:03:54,876 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 09:03:54,876 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 09:03:54,876 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1694894624] [2021-08-29 09:03:54,876 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1694894624] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 09:03:54,877 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 09:03:54,877 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-29 09:03:54,877 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250985253] [2021-08-29 09:03:54,877 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-29 09:03:54,877 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 09:03:54,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-29 09:03:54,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-08-29 09:03:54,878 INFO L87 Difference]: Start difference. First operand 37 states and 49 transitions. Second operand has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 09:03:54,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 09:03:54,966 INFO L93 Difference]: Finished difference Result 70 states and 94 transitions. [2021-08-29 09:03:54,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-29 09:03:54,967 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-08-29 09:03:54,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 09:03:54,968 INFO L225 Difference]: With dead ends: 70 [2021-08-29 09:03:54,968 INFO L226 Difference]: Without dead ends: 43 [2021-08-29 09:03:54,968 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 37.83ms TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-08-29 09:03:54,969 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 10 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 47.97ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.04ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 60.30ms IncrementalHoareTripleChecker+Time [2021-08-29 09:03:54,969 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 0 Invalid, 147 Unknown, 0 Unchecked, 1.04ms Time], IncrementalHoareTripleChecker [5 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 60.30ms Time] [2021-08-29 09:03:54,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2021-08-29 09:03:54,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 39. [2021-08-29 09:03:54,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 38 states have (on average 1.3421052631578947) internal successors, (51), 38 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 09:03:54,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 51 transitions. [2021-08-29 09:03:54,978 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 51 transitions. Word has length 17 [2021-08-29 09:03:54,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 09:03:54,979 INFO L470 AbstractCegarLoop]: Abstraction has 39 states and 51 transitions. [2021-08-29 09:03:54,979 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 09:03:54,979 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 51 transitions. [2021-08-29 09:03:54,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-08-29 09:03:54,980 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 09:03:54,980 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 09:03:54,980 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-08-29 09:03:54,980 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 09:03:54,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 09:03:54,981 INFO L82 PathProgramCache]: Analyzing trace with hash -86042878, now seen corresponding path program 1 times [2021-08-29 09:03:54,981 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 09:03:54,981 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2128432530] [2021-08-29 09:03:54,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 09:03:54,982 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 09:03:55,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-29 09:03:55,024 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-29 09:03:55,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-29 09:03:55,062 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-29 09:03:55,062 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-08-29 09:03:55,064 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-08-29 09:03:55,065 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-08-29 09:03:55,070 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-29 09:03:55,093 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.08 09:03:55 BoogieIcfgContainer [2021-08-29 09:03:55,094 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-29 09:03:55,094 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-29 09:03:55,094 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-29 09:03:55,094 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-29 09:03:55,094 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 09:03:54" (3/4) ... [2021-08-29 09:03:55,096 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-08-29 09:03:55,126 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-29 09:03:55,126 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-29 09:03:55,126 INFO L158 Benchmark]: Toolchain (without parser) took 1696.47ms. Allocated memory was 62.9MB in the beginning and 77.6MB in the end (delta: 14.7MB). Free memory was 42.9MB in the beginning and 35.0MB in the end (delta: 8.0MB). Peak memory consumption was 23.4MB. Max. memory is 16.1GB. [2021-08-29 09:03:55,127 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 62.9MB. Free memory was 46.0MB in the beginning and 45.9MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-29 09:03:55,127 INFO L158 Benchmark]: CACSL2BoogieTranslator took 351.18ms. Allocated memory is still 62.9MB. Free memory was 42.7MB in the beginning and 40.0MB in the end (delta: 2.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-08-29 09:03:55,127 INFO L158 Benchmark]: Boogie Procedure Inliner took 29.50ms. Allocated memory is still 62.9MB. Free memory was 39.8MB in the beginning and 37.9MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-08-29 09:03:55,127 INFO L158 Benchmark]: Boogie Preprocessor took 51.02ms. Allocated memory is still 62.9MB. Free memory was 37.9MB in the beginning and 36.4MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-08-29 09:03:55,127 INFO L158 Benchmark]: RCFGBuilder took 241.57ms. Allocated memory was 62.9MB in the beginning and 77.6MB in the end (delta: 14.7MB). Free memory was 36.4MB in the beginning and 55.0MB in the end (delta: -18.5MB). Peak memory consumption was 10.6MB. Max. memory is 16.1GB. [2021-08-29 09:03:55,128 INFO L158 Benchmark]: TraceAbstraction took 986.26ms. Allocated memory is still 77.6MB. Free memory was 54.6MB in the beginning and 37.5MB in the end (delta: 17.1MB). Peak memory consumption was 18.0MB. Max. memory is 16.1GB. [2021-08-29 09:03:55,128 INFO L158 Benchmark]: Witness Printer took 32.09ms. Allocated memory is still 77.6MB. Free memory was 37.5MB in the beginning and 35.0MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-08-29 09:03:55,129 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 62.9MB. Free memory was 46.0MB in the beginning and 45.9MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 351.18ms. Allocated memory is still 62.9MB. Free memory was 42.7MB in the beginning and 40.0MB in the end (delta: 2.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 29.50ms. Allocated memory is still 62.9MB. Free memory was 39.8MB in the beginning and 37.9MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 51.02ms. Allocated memory is still 62.9MB. Free memory was 37.9MB in the beginning and 36.4MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 241.57ms. Allocated memory was 62.9MB in the beginning and 77.6MB in the end (delta: 14.7MB). Free memory was 36.4MB in the beginning and 55.0MB in the end (delta: -18.5MB). Peak memory consumption was 10.6MB. Max. memory is 16.1GB. * TraceAbstraction took 986.26ms. Allocated memory is still 77.6MB. Free memory was 54.6MB in the beginning and 37.5MB in the end (delta: 17.1MB). Peak memory consumption was 18.0MB. Max. memory is 16.1GB. * Witness Printer took 32.09ms. Allocated memory is still 77.6MB. Free memory was 37.5MB in the beginning and 35.0MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.00ms ErrorAutomatonConstructionTimeTotal, 0.00ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.00ms ErrorAutomatonConstructionTimeAvg, 0.00ms ErrorAutomatonDifferenceTimeAvg, 0.00ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 584]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L532] int flag = 1; [L533] List a = (List) malloc(sizeof(struct node)); [L534] COND FALSE !(a == 0) [L535] List t; [L536] List l1; [L537] List l2; [L538] List b; [L539] List u; [L540] List p = a; [L541] COND TRUE __VERIFIER_nondet_int() [L542] COND TRUE \read(flag) [L543] p->h = 1 [L544] flag = 0 [L549] t = (List) malloc(sizeof(struct node)) [L550] COND FALSE !(t == 0) [L551] p->n = t [L552] EXPR p->n [L552] p = p->n [L541] COND FALSE !(__VERIFIER_nondet_int()) [L554] p->h = 3 [L555] EXPR a->h [L555] COND FALSE !(a->h == 3) [L556] flag = 1 [L557] l1 = 0 [L558] l2 = 0 [L559] p = a [L560] EXPR p->h [L560] COND TRUE p->h != 3 [L561] t = p [L562] EXPR p->n [L562] p = p->n [L563] COND TRUE \read(flag) [L564] t->n = l1 [L565] l1 = t [L566] flag = 0 [L560] EXPR p->h [L560] COND FALSE !(p->h != 3) [L573] p = l1 [L574] COND TRUE p != 0 [L575] EXPR p->h [L575] COND TRUE p->h != 2 [L584] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 29 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 920.77ms, OverallIterations: 5, TraceHistogramMax: 2, EmptinessCheckTime: 8.94ms, AutomataDifference: 409.56ms, DeadEndRemovalTime: 0.00ms, HoareAnnotationTime: 0.00ms, InitialAbstractionConstructionTime: 6.54ms, PartialOrderReductionTime: 0.00ms, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 26 SdHoareTripleChecker+Valid, 255.70ms IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 26 mSDsluCounter, 2 SdHoareTripleChecker+Invalid, 208.31ms Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 128 mSDsCounter, 9 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 348 IncrementalHoareTripleChecker+Invalid, 357 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 9 mSolverCounterUnsat, 2 mSDtfsCounter, 348 mSolverCounterSat, 4.62ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 20 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 75.91ms Time, 0.00ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=39occurred in iteration=4, InterpolantAutomatonStates: 18, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.00ms DumpTime, AutomataMinimizationStatistics: 33.86ms AutomataMinimizationTime, 4 MinimizatonAttempts, 11 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 15.31ms SsaConstructionTime, 98.13ms SatisfiabilityAnalysisTime, 175.88ms InterpolantComputationTime, 82 NumberOfCodeBlocks, 82 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 55 ConstructedInterpolants, 0 QuantifiedInterpolants, 147 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 2/2 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2021-08-29 09:03:55,170 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...