./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/loop-lit/jm2006_variant.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 20ed64ec 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/loop-lit/jm2006_variant.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 d9ecf0997a3226968b15d351ec48dae1cc4b70e9 ....................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-20ed64e [2021-08-26 03:47:00,816 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-26 03:47:00,818 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-26 03:47:00,841 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-26 03:47:00,842 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-26 03:47:00,843 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-26 03:47:00,844 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-26 03:47:00,846 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-26 03:47:00,847 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-26 03:47:00,848 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-26 03:47:00,849 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-26 03:47:00,850 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-26 03:47:00,850 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-26 03:47:00,851 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-26 03:47:00,852 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-26 03:47:00,853 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-26 03:47:00,854 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-26 03:47:00,855 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-26 03:47:00,856 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-26 03:47:00,858 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-26 03:47:00,859 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-26 03:47:00,860 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-26 03:47:00,861 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-26 03:47:00,862 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-26 03:47:00,864 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-26 03:47:00,865 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-26 03:47:00,865 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-26 03:47:00,866 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-26 03:47:00,866 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-26 03:47:00,867 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-26 03:47:00,867 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-26 03:47:00,868 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-26 03:47:00,868 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-26 03:47:00,869 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-26 03:47:00,870 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-26 03:47:00,870 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-26 03:47:00,871 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-26 03:47:00,871 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-26 03:47:00,871 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-26 03:47:00,872 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-26 03:47:00,873 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-26 03:47:00,876 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-08-26 03:47:00,917 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-26 03:47:00,917 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-26 03:47:00,918 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-26 03:47:00,919 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-26 03:47:00,920 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-26 03:47:00,920 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-26 03:47:00,920 INFO L138 SettingsManager]: * Use SBE=true [2021-08-26 03:47:00,921 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-26 03:47:00,921 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-26 03:47:00,921 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-26 03:47:00,922 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-26 03:47:00,922 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-26 03:47:00,923 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-26 03:47:00,923 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-26 03:47:00,923 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-26 03:47:00,923 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-26 03:47:00,923 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-26 03:47:00,924 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-26 03:47:00,924 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-26 03:47:00,924 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-26 03:47:00,924 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-26 03:47:00,924 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-26 03:47:00,934 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-26 03:47:00,934 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-26 03:47:00,934 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-26 03:47:00,935 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-26 03:47:00,935 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-26 03:47:00,935 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-26 03:47:00,935 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-26 03:47:00,935 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-26 03:47:00,936 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d9ecf0997a3226968b15d351ec48dae1cc4b70e9 [2021-08-26 03:47:01,246 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-26 03:47:01,270 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-26 03:47:01,273 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-26 03:47:01,274 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-26 03:47:01,274 INFO L275 PluginConnector]: CDTParser initialized [2021-08-26 03:47:01,275 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loop-lit/jm2006_variant.i [2021-08-26 03:47:01,343 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c5354684d/fd3f427edf174b1aa66a877760d18231/FLAG4256d0942 [2021-08-26 03:47:01,794 INFO L306 CDTParser]: Found 1 translation units. [2021-08-26 03:47:01,794 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-lit/jm2006_variant.i [2021-08-26 03:47:01,800 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c5354684d/fd3f427edf174b1aa66a877760d18231/FLAG4256d0942 [2021-08-26 03:47:01,822 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c5354684d/fd3f427edf174b1aa66a877760d18231 [2021-08-26 03:47:01,824 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-26 03:47:01,826 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-26 03:47:01,827 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-26 03:47:01,827 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-26 03:47:01,830 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-26 03:47:01,831 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 03:47:01" (1/1) ... [2021-08-26 03:47:01,832 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2270f1e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:47:01, skipping insertion in model container [2021-08-26 03:47:01,832 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 03:47:01" (1/1) ... [2021-08-26 03:47:01,838 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-26 03:47:01,851 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-26 03:47:01,970 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/loop-lit/jm2006_variant.i[895,908] [2021-08-26 03:47:01,978 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-26 03:47:01,985 INFO L203 MainTranslator]: Completed pre-run [2021-08-26 03:47:02,007 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/loop-lit/jm2006_variant.i[895,908] [2021-08-26 03:47:02,014 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-26 03:47:02,033 INFO L208 MainTranslator]: Completed translation [2021-08-26 03:47:02,034 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:47:02 WrapperNode [2021-08-26 03:47:02,035 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-26 03:47:02,036 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-26 03:47:02,037 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-26 03:47:02,037 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-26 03:47:02,043 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:47:02" (1/1) ... [2021-08-26 03:47:02,050 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:47:02" (1/1) ... [2021-08-26 03:47:02,068 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-26 03:47:02,069 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-26 03:47:02,070 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-26 03:47:02,070 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-26 03:47:02,076 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:47:02" (1/1) ... [2021-08-26 03:47:02,076 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:47:02" (1/1) ... [2021-08-26 03:47:02,085 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:47:02" (1/1) ... [2021-08-26 03:47:02,085 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:47:02" (1/1) ... [2021-08-26 03:47:02,087 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:47:02" (1/1) ... [2021-08-26 03:47:02,090 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:47:02" (1/1) ... [2021-08-26 03:47:02,091 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:47:02" (1/1) ... [2021-08-26 03:47:02,092 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-26 03:47:02,093 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-26 03:47:02,093 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-26 03:47:02,093 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-26 03:47:02,094 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:47:02" (1/1) ... [2021-08-26 03:47:02,100 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-26 03:47:02,106 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 03:47:02,116 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) [2021-08-26 03:47:02,139 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 [2021-08-26 03:47:02,165 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-26 03:47:02,165 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-26 03:47:02,166 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-26 03:47:02,166 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-26 03:47:02,402 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-26 03:47:02,402 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-08-26 03:47:02,404 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 03:47:02 BoogieIcfgContainer [2021-08-26 03:47:02,404 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-26 03:47:02,405 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-26 03:47:02,405 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-26 03:47:02,407 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-26 03:47:02,408 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.08 03:47:01" (1/3) ... [2021-08-26 03:47:02,408 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a9b4b59 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 03:47:02, skipping insertion in model container [2021-08-26 03:47:02,408 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:47:02" (2/3) ... [2021-08-26 03:47:02,409 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a9b4b59 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 03:47:02, skipping insertion in model container [2021-08-26 03:47:02,409 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 03:47:02" (3/3) ... [2021-08-26 03:47:02,410 INFO L111 eAbstractionObserver]: Analyzing ICFG jm2006_variant.i [2021-08-26 03:47:02,418 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-26 03:47:02,432 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-08-26 03:47:02,469 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-26 03:47:02,475 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 [2021-08-26 03:47:02,475 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-08-26 03:47:02,497 INFO L276 IsEmpty]: Start isEmpty. Operand has 13 states, 11 states have (on average 1.6363636363636365) internal successors, (18), 12 states have internal predecessors, (18), 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) [2021-08-26 03:47:02,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-08-26 03:47:02,501 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 03:47:02,501 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 03:47:02,505 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-26 03:47:02,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 03:47:02,510 INFO L82 PathProgramCache]: Analyzing trace with hash 179632146, now seen corresponding path program 1 times [2021-08-26 03:47:02,520 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 03:47:02,521 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1342923802] [2021-08-26 03:47:02,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 03:47:02,522 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 03:47:02,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 03:47:02,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 03:47:02,947 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 03:47:02,948 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1342923802] [2021-08-26 03:47:02,949 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1342923802] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 03:47:02,949 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 03:47:02,950 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-26 03:47:02,951 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412587988] [2021-08-26 03:47:02,956 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-26 03:47:02,956 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 03:47:02,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-26 03:47:02,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-08-26 03:47:02,973 INFO L87 Difference]: Start difference. First operand has 13 states, 11 states have (on average 1.6363636363636365) internal successors, (18), 12 states have internal predecessors, (18), 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 5 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 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) [2021-08-26 03:47:03,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 03:47:03,088 INFO L93 Difference]: Finished difference Result 36 states and 43 transitions. [2021-08-26 03:47:03,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-26 03:47:03,090 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 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 8 [2021-08-26 03:47:03,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 03:47:03,097 INFO L225 Difference]: With dead ends: 36 [2021-08-26 03:47:03,097 INFO L226 Difference]: Without dead ends: 10 [2021-08-26 03:47:03,101 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 106.0ms TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-08-26 03:47:03,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2021-08-26 03:47:03,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2021-08-26 03:47:03,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 9 states have internal predecessors, (10), 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) [2021-08-26 03:47:03,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2021-08-26 03:47:03,132 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 8 [2021-08-26 03:47:03,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 03:47:03,133 INFO L470 AbstractCegarLoop]: Abstraction has 10 states and 10 transitions. [2021-08-26 03:47:03,133 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 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) [2021-08-26 03:47:03,134 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 10 transitions. [2021-08-26 03:47:03,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-08-26 03:47:03,134 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 03:47:03,135 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 03:47:03,135 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-26 03:47:03,136 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-26 03:47:03,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 03:47:03,141 INFO L82 PathProgramCache]: Analyzing trace with hash 1275235031, now seen corresponding path program 1 times [2021-08-26 03:47:03,141 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 03:47:03,141 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454669739] [2021-08-26 03:47:03,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 03:47:03,142 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 03:47:03,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 03:47:03,340 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 03:47:03,340 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 03:47:03,341 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1454669739] [2021-08-26 03:47:03,341 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1454669739] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 03:47:03,341 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1692334501] [2021-08-26 03:47:03,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 03:47:03,342 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 03:47:03,342 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 03:47:03,343 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) [2021-08-26 03:47:03,363 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-08-26 03:47:03,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 03:47:03,394 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 19 conjunts are in the unsatisfiable core [2021-08-26 03:47:03,398 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 03:47:03,597 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 03:47:03,597 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1692334501] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 03:47:03,602 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-26 03:47:03,602 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2021-08-26 03:47:03,603 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800849021] [2021-08-26 03:47:03,604 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-08-26 03:47:03,604 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 03:47:03,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-26 03:47:03,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-08-26 03:47:03,605 INFO L87 Difference]: Start difference. First operand 10 states and 10 transitions. Second operand has 9 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 9 states have internal predecessors, (13), 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) [2021-08-26 03:47:03,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 03:47:03,701 INFO L93 Difference]: Finished difference Result 15 states and 15 transitions. [2021-08-26 03:47:03,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-26 03:47:03,702 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 9 states have internal predecessors, (13), 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 9 [2021-08-26 03:47:03,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 03:47:03,702 INFO L225 Difference]: With dead ends: 15 [2021-08-26 03:47:03,702 INFO L226 Difference]: Without dead ends: 11 [2021-08-26 03:47:03,703 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 135.9ms TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2021-08-26 03:47:03,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2021-08-26 03:47:03,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2021-08-26 03:47:03,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 10 states have (on average 1.1) internal successors, (11), 10 states have internal predecessors, (11), 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) [2021-08-26 03:47:03,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2021-08-26 03:47:03,706 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 9 [2021-08-26 03:47:03,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 03:47:03,706 INFO L470 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2021-08-26 03:47:03,706 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 9 states have internal predecessors, (13), 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) [2021-08-26 03:47:03,706 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2021-08-26 03:47:03,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-08-26 03:47:03,706 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 03:47:03,707 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 03:47:03,736 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-08-26 03:47:03,907 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 03:47:03,908 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-26 03:47:03,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 03:47:03,908 INFO L82 PathProgramCache]: Analyzing trace with hash 879186098, now seen corresponding path program 2 times [2021-08-26 03:47:03,908 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 03:47:03,908 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024747241] [2021-08-26 03:47:03,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 03:47:03,909 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 03:47:03,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 03:47:04,071 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 03:47:04,072 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 03:47:04,073 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2024747241] [2021-08-26 03:47:04,073 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2024747241] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 03:47:04,073 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [390514978] [2021-08-26 03:47:04,074 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-26 03:47:04,074 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 03:47:04,074 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 03:47:04,081 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-26 03:47:04,082 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-08-26 03:47:04,146 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-08-26 03:47:04,147 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-26 03:47:04,148 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 25 conjunts are in the unsatisfiable core [2021-08-26 03:47:04,150 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 03:47:04,350 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 03:47:04,351 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [390514978] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 03:47:04,351 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-26 03:47:04,351 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2021-08-26 03:47:04,351 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347243716] [2021-08-26 03:47:04,352 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-08-26 03:47:04,352 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 03:47:04,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-08-26 03:47:04,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2021-08-26 03:47:04,353 INFO L87 Difference]: Start difference. First operand 11 states and 11 transitions. Second operand has 11 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 11 states have internal predecessors, (15), 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) [2021-08-26 03:47:04,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 03:47:04,468 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions. [2021-08-26 03:47:04,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-26 03:47:04,469 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 11 states have internal predecessors, (15), 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 10 [2021-08-26 03:47:04,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 03:47:04,470 INFO L225 Difference]: With dead ends: 19 [2021-08-26 03:47:04,470 INFO L226 Difference]: Without dead ends: 13 [2021-08-26 03:47:04,470 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 200.2ms TimeCoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2021-08-26 03:47:04,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2021-08-26 03:47:04,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2021-08-26 03:47:04,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 12 states have (on average 1.0833333333333333) internal successors, (13), 12 states have internal predecessors, (13), 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) [2021-08-26 03:47:04,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2021-08-26 03:47:04,473 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 10 [2021-08-26 03:47:04,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 03:47:04,474 INFO L470 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2021-08-26 03:47:04,474 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 11 states have internal predecessors, (15), 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) [2021-08-26 03:47:04,474 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2021-08-26 03:47:04,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-08-26 03:47:04,475 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 03:47:04,475 INFO L512 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 03:47:04,500 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-08-26 03:47:04,688 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2021-08-26 03:47:04,689 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-26 03:47:04,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 03:47:04,690 INFO L82 PathProgramCache]: Analyzing trace with hash -1159331502, now seen corresponding path program 3 times [2021-08-26 03:47:04,690 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 03:47:04,690 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996914532] [2021-08-26 03:47:04,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 03:47:04,690 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 03:47:04,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 03:47:04,847 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-08-26 03:47:04,848 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 03:47:04,848 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [996914532] [2021-08-26 03:47:04,848 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [996914532] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 03:47:04,848 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [771295410] [2021-08-26 03:47:04,848 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-08-26 03:47:04,849 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 03:47:04,849 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 03:47:04,850 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-26 03:47:04,864 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-08-26 03:47:04,923 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-08-26 03:47:04,923 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-26 03:47:04,924 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 37 conjunts are in the unsatisfiable core [2021-08-26 03:47:04,925 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 03:47:05,167 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 03:47:05,167 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [771295410] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 03:47:05,167 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-26 03:47:05,167 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 14 [2021-08-26 03:47:05,168 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551367629] [2021-08-26 03:47:05,168 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-08-26 03:47:05,168 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 03:47:05,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-08-26 03:47:05,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2021-08-26 03:47:05,169 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand has 14 states, 14 states have (on average 1.3571428571428572) internal successors, (19), 14 states have internal predecessors, (19), 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) [2021-08-26 03:47:05,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 03:47:05,288 INFO L93 Difference]: Finished difference Result 16 states and 17 transitions. [2021-08-26 03:47:05,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-08-26 03:47:05,289 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.3571428571428572) internal successors, (19), 14 states have internal predecessors, (19), 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 [2021-08-26 03:47:05,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 03:47:05,289 INFO L225 Difference]: With dead ends: 16 [2021-08-26 03:47:05,289 INFO L226 Difference]: Without dead ends: 0 [2021-08-26 03:47:05,290 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 217.2ms TimeCoverageRelationStatistics Valid=74, Invalid=232, Unknown=0, NotChecked=0, Total=306 [2021-08-26 03:47:05,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-08-26 03:47:05,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-08-26 03:47:05,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 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) [2021-08-26 03:47:05,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-08-26 03:47:05,291 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 12 [2021-08-26 03:47:05,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 03:47:05,291 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-08-26 03:47:05,291 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 1.3571428571428572) internal successors, (19), 14 states have internal predecessors, (19), 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) [2021-08-26 03:47:05,291 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-08-26 03:47:05,292 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-08-26 03:47:05,294 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 03:47:05,318 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-08-26 03:47:05,515 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 03:47:05,517 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-08-26 03:47:05,520 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 03:47:05,522 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 03:47:05,523 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 03:47:05,572 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-08-26 03:47:05,572 INFO L853 garLoopResultBuilder]: At program point L33-2(lines 33 37) the Hoare annotation is: (let ((.cse1 (+ ULTIMATE.start_main_~i~0 ULTIMATE.start_main_~z~0 ULTIMATE.start_main_~y~0)) (.cse0 (+ ULTIMATE.start_main_~j~0 ULTIMATE.start_main_~x~0))) (and (<= .cse0 .cse1) (<= .cse1 .cse0))) [2021-08-26 03:47:05,572 INFO L857 garLoopResultBuilder]: For program point L33-3(lines 24 42) no Hoare annotation was computed. [2021-08-26 03:47:05,573 INFO L857 garLoopResultBuilder]: For program point L29(line 29) no Hoare annotation was computed. [2021-08-26 03:47:05,573 INFO L857 garLoopResultBuilder]: For program point L19(line 19) no Hoare annotation was computed. [2021-08-26 03:47:05,573 INFO L860 garLoopResultBuilder]: At program point L38(lines 38 40) the Hoare annotation is: true [2021-08-26 03:47:05,573 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-08-26 03:47:05,573 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-08-26 03:47:05,573 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-08-26 03:47:05,574 INFO L857 garLoopResultBuilder]: For program point L28(line 28) no Hoare annotation was computed. [2021-08-26 03:47:05,574 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2021-08-26 03:47:05,574 INFO L857 garLoopResultBuilder]: For program point L18(lines 18 20) no Hoare annotation was computed. [2021-08-26 03:47:05,574 INFO L860 garLoopResultBuilder]: At program point L41(lines 24 42) the Hoare annotation is: true [2021-08-26 03:47:05,578 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-26 03:47:05,592 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.08 03:47:05 BoogieIcfgContainer [2021-08-26 03:47:05,592 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-26 03:47:05,593 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-26 03:47:05,593 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-26 03:47:05,596 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-26 03:47:05,596 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 03:47:02" (3/4) ... [2021-08-26 03:47:05,599 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-08-26 03:47:05,609 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2021-08-26 03:47:05,609 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-08-26 03:47:05,610 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-08-26 03:47:05,610 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-08-26 03:47:05,653 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-26 03:47:05,654 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-26 03:47:05,660 INFO L168 Benchmark]: Toolchain (without parser) took 3833.05 ms. Allocated memory was 48.2 MB in the beginning and 104.9 MB in the end (delta: 56.6 MB). Free memory was 24.0 MB in the beginning and 79.9 MB in the end (delta: -56.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-26 03:47:05,661 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 48.2 MB. Free memory was 30.5 MB in the beginning and 30.4 MB in the end (delta: 40.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-26 03:47:05,661 INFO L168 Benchmark]: CACSL2BoogieTranslator took 208.80 ms. Allocated memory was 48.2 MB in the beginning and 58.7 MB in the end (delta: 10.5 MB). Free memory was 23.7 MB in the beginning and 41.9 MB in the end (delta: -18.2 MB). Peak memory consumption was 3.4 MB. Max. memory is 16.1 GB. [2021-08-26 03:47:05,662 INFO L168 Benchmark]: Boogie Procedure Inliner took 32.04 ms. Allocated memory is still 58.7 MB. Free memory was 41.9 MB in the beginning and 40.6 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-26 03:47:05,662 INFO L168 Benchmark]: Boogie Preprocessor took 22.98 ms. Allocated memory is still 58.7 MB. Free memory was 40.6 MB in the beginning and 39.5 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-26 03:47:05,662 INFO L168 Benchmark]: RCFGBuilder took 310.83 ms. Allocated memory is still 58.7 MB. Free memory was 39.4 MB in the beginning and 41.1 MB in the end (delta: -1.8 MB). Peak memory consumption was 15.8 MB. Max. memory is 16.1 GB. [2021-08-26 03:47:05,662 INFO L168 Benchmark]: TraceAbstraction took 3187.14 ms. Allocated memory was 58.7 MB in the beginning and 104.9 MB in the end (delta: 46.1 MB). Free memory was 40.6 MB in the beginning and 82.0 MB in the end (delta: -41.4 MB). Peak memory consumption was 39.6 MB. Max. memory is 16.1 GB. [2021-08-26 03:47:05,663 INFO L168 Benchmark]: Witness Printer took 65.55 ms. Allocated memory is still 104.9 MB. Free memory was 82.0 MB in the beginning and 79.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-26 03:47:05,665 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 48.2 MB. Free memory was 30.5 MB in the beginning and 30.4 MB in the end (delta: 40.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 208.80 ms. Allocated memory was 48.2 MB in the beginning and 58.7 MB in the end (delta: 10.5 MB). Free memory was 23.7 MB in the beginning and 41.9 MB in the end (delta: -18.2 MB). Peak memory consumption was 3.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 32.04 ms. Allocated memory is still 58.7 MB. Free memory was 41.9 MB in the beginning and 40.6 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 22.98 ms. Allocated memory is still 58.7 MB. Free memory was 40.6 MB in the beginning and 39.5 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 310.83 ms. Allocated memory is still 58.7 MB. Free memory was 39.4 MB in the beginning and 41.1 MB in the end (delta: -1.8 MB). Peak memory consumption was 15.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 3187.14 ms. Allocated memory was 58.7 MB in the beginning and 104.9 MB in the end (delta: 46.1 MB). Free memory was 40.6 MB in the beginning and 82.0 MB in the end (delta: -41.4 MB). Peak memory consumption was 39.6 MB. Max. memory is 16.1 GB. * Witness Printer took 65.55 ms. Allocated memory is still 104.9 MB. Free memory was 82.0 MB in the beginning and 79.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 13 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 3110.4ms, OverallIterations: 4, TraceHistogramMax: 4, EmptinessCheckTime: 19.2ms, AutomataDifference: 481.5ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 55.6ms, InitialAbstractionConstructionTime: 7.6ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 32 SDtfs, 40 SDslu, 82 SDs, 0 SdLazy, 185 SolverSat, 7 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 142.9ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 67 GetRequests, 22 SyntacticMatches, 3 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 659.5ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=13occurred in iteration=0, InterpolantAutomatonStates: 34, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 24.0ms AutomataMinimizationTime, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 16 NumberOfFragments, 19 HoareAnnotationTreeSize, 3 FomulaSimplifications, 20 FormulaSimplificationTreeSizeReduction, 18.1ms HoareSimplificationTime, 3 FomulaSimplificationsInter, 130 FormulaSimplificationTreeSizeReductionInter, 32.1ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 39.4ms SsaConstructionTime, 138.8ms SatisfiabilityAnalysisTime, 1407.8ms InterpolantComputationTime, 70 NumberOfCodeBlocks, 70 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 63 ConstructedInterpolants, 0 QuantifiedInterpolants, 608 SizeOfPredicates, 18 NumberOfNonLiveVariables, 208 ConjunctsInSsa, 81 ConjunctsInUnsatCore, 7 InterpolantComputations, 1 PerfectInterpolantSequences, 1/28 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 24]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 38]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 33]: Loop Invariant Derived loop invariant: j + x <= i + z + y && i + z + y <= j + x RESULT: Ultimate proved your program to be correct! [2021-08-26 03:47:05,695 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...