./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/termination-crafted-lit/LeikeHeizmann-WST2014-Ex9.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows 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/termination-crafted-lit/LeikeHeizmann-WST2014-Ex9.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-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 ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 8c261c4c4bb9c8a95f9cb14c668da53a89a0d0c6 ..................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-20ed64e [2021-08-27 10:56:26,816 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-27 10:56:26,818 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-27 10:56:26,858 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-27 10:56:26,858 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-27 10:56:26,861 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-27 10:56:26,862 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-27 10:56:26,865 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-27 10:56:26,867 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-27 10:56:26,870 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-27 10:56:26,872 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-27 10:56:26,875 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-27 10:56:26,875 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-27 10:56:26,877 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-27 10:56:26,878 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-27 10:56:26,881 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-27 10:56:26,881 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-27 10:56:26,882 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-27 10:56:26,883 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-27 10:56:26,888 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-27 10:56:26,889 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-27 10:56:26,889 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-27 10:56:26,890 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-27 10:56:26,891 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-27 10:56:26,896 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-27 10:56:26,897 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-27 10:56:26,897 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-27 10:56:26,898 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-27 10:56:26,898 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-27 10:56:26,899 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-27 10:56:26,899 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-27 10:56:26,899 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-27 10:56:26,901 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-27 10:56:26,901 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-27 10:56:26,902 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-27 10:56:26,902 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-27 10:56:26,903 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-27 10:56:26,903 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-27 10:56:26,903 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-27 10:56:26,904 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-27 10:56:26,904 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-27 10:56:26,905 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Default.epf [2021-08-27 10:56:26,934 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-27 10:56:26,934 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-27 10:56:26,935 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-27 10:56:26,935 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-27 10:56:26,936 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-27 10:56:26,937 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-27 10:56:26,937 INFO L138 SettingsManager]: * Use SBE=true [2021-08-27 10:56:26,937 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-27 10:56:26,937 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-08-27 10:56:26,937 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-27 10:56:26,938 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-27 10:56:26,938 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-27 10:56:26,938 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-27 10:56:26,938 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-27 10:56:26,938 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-08-27 10:56:26,939 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-27 10:56:26,939 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-27 10:56:26,939 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-27 10:56:26,939 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-27 10:56:26,939 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-27 10:56:26,939 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-27 10:56:26,939 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-27 10:56:26,940 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-27 10:56:26,940 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-27 10:56:26,940 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-27 10:56:26,940 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-27 10:56:26,940 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-27 10:56:26,940 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-27 10:56:26,940 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-27 10:56:26,941 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8c261c4c4bb9c8a95f9cb14c668da53a89a0d0c6 [2021-08-27 10:56:27,188 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-27 10:56:27,206 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-27 10:56:27,207 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-27 10:56:27,208 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-27 10:56:27,208 INFO L275 PluginConnector]: CDTParser initialized [2021-08-27 10:56:27,209 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-crafted-lit/LeikeHeizmann-WST2014-Ex9.c [2021-08-27 10:56:27,261 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1d242a4f9/3be8365cc2064f50a6e4321a80cbec8a/FLAGa9948879b [2021-08-27 10:56:27,630 INFO L306 CDTParser]: Found 1 translation units. [2021-08-27 10:56:27,631 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted-lit/LeikeHeizmann-WST2014-Ex9.c [2021-08-27 10:56:27,635 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1d242a4f9/3be8365cc2064f50a6e4321a80cbec8a/FLAGa9948879b [2021-08-27 10:56:28,036 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1d242a4f9/3be8365cc2064f50a6e4321a80cbec8a [2021-08-27 10:56:28,039 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-27 10:56:28,041 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-27 10:56:28,043 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-27 10:56:28,043 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-27 10:56:28,046 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-27 10:56:28,046 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 10:56:28" (1/1) ... [2021-08-27 10:56:28,047 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26e79f83 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:56:28, skipping insertion in model container [2021-08-27 10:56:28,047 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 10:56:28" (1/1) ... [2021-08-27 10:56:28,051 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-27 10:56:28,058 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-27 10:56:28,137 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 10:56:28,141 INFO L203 MainTranslator]: Completed pre-run [2021-08-27 10:56:28,149 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 10:56:28,158 INFO L208 MainTranslator]: Completed translation [2021-08-27 10:56:28,159 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:56:28 WrapperNode [2021-08-27 10:56:28,159 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-27 10:56:28,160 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-27 10:56:28,160 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-27 10:56:28,160 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-27 10:56:28,164 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:56:28" (1/1) ... [2021-08-27 10:56:28,168 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:56:28" (1/1) ... [2021-08-27 10:56:28,181 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-27 10:56:28,182 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-27 10:56:28,182 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-27 10:56:28,182 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-27 10:56:28,187 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:56:28" (1/1) ... [2021-08-27 10:56:28,187 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:56:28" (1/1) ... [2021-08-27 10:56:28,187 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:56:28" (1/1) ... [2021-08-27 10:56:28,188 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:56:28" (1/1) ... [2021-08-27 10:56:28,189 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:56:28" (1/1) ... [2021-08-27 10:56:28,191 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:56:28" (1/1) ... [2021-08-27 10:56:28,195 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:56:28" (1/1) ... [2021-08-27 10:56:28,195 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-27 10:56:28,197 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-27 10:56:28,197 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-27 10:56:28,197 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-27 10:56:28,204 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:56:28" (1/1) ... [2021-08-27 10:56:28,210 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-27 10:56:28,214 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 10:56:28,262 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) [2021-08-27 10:56:28,321 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 [2021-08-27 10:56:28,350 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-27 10:56:28,351 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-27 10:56:28,483 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-27 10:56:28,483 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-08-27 10:56:28,485 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 10:56:28 BoogieIcfgContainer [2021-08-27 10:56:28,485 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-27 10:56:28,487 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-27 10:56:28,487 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-27 10:56:28,489 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-27 10:56:28,490 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.08 10:56:28" (1/3) ... [2021-08-27 10:56:28,490 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79fbfc8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 10:56:28, skipping insertion in model container [2021-08-27 10:56:28,491 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:56:28" (2/3) ... [2021-08-27 10:56:28,491 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79fbfc8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 10:56:28, skipping insertion in model container [2021-08-27 10:56:28,491 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 10:56:28" (3/3) ... [2021-08-27 10:56:28,493 INFO L111 eAbstractionObserver]: Analyzing ICFG LeikeHeizmann-WST2014-Ex9.c [2021-08-27 10:56:28,496 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-27 10:56:28,497 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-08-27 10:56:28,530 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-27 10:56:28,536 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 [2021-08-27 10:56:28,538 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-08-27 10:56:28,548 INFO L276 IsEmpty]: Start isEmpty. Operand has 10 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 9 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) [2021-08-27 10:56:28,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-08-27 10:56:28,551 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 10:56:28,551 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-08-27 10:56:28,552 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2021-08-27 10:56:28,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 10:56:28,556 INFO L82 PathProgramCache]: Analyzing trace with hash 31073, now seen corresponding path program 1 times [2021-08-27 10:56:28,561 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 10:56:28,561 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1929595808] [2021-08-27 10:56:28,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 10:56:28,562 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 10:56:28,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 10:56:28,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 10:56:28,733 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 10:56:28,733 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1929595808] [2021-08-27 10:56:28,734 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1929595808] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 10:56:28,734 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 10:56:28,734 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-27 10:56:28,735 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954499005] [2021-08-27 10:56:28,738 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-27 10:56:28,738 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 10:56:28,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-27 10:56:28,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-08-27 10:56:28,762 INFO L87 Difference]: Start difference. First operand has 10 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 9 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) Second operand has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 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) [2021-08-27 10:56:28,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 10:56:28,786 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions. [2021-08-27 10:56:28,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-27 10:56:28,787 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 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 3 [2021-08-27 10:56:28,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 10:56:28,791 INFO L225 Difference]: With dead ends: 14 [2021-08-27 10:56:28,791 INFO L226 Difference]: Without dead ends: 0 [2021-08-27 10:56:28,793 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 28.8ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-08-27 10:56:28,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-08-27 10:56:28,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-08-27 10:56:28,807 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) [2021-08-27 10:56:28,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-08-27 10:56:28,808 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 3 [2021-08-27 10:56:28,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 10:56:28,808 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-08-27 10:56:28,809 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 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) [2021-08-27 10:56:28,809 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-08-27 10:56:28,809 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-08-27 10:56:28,811 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-08-27 10:56:28,811 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-08-27 10:56:28,811 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-27 10:56:28,813 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-08-27 10:56:28,815 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-27 10:56:28,817 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-27 10:56:28,823 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 14) no Hoare annotation was computed. [2021-08-27 10:56:28,824 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-08-27 10:56:28,824 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 14) no Hoare annotation was computed. [2021-08-27 10:56:28,824 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-08-27 10:56:28,824 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-08-27 10:56:28,824 INFO L853 garLoopResultBuilder]: At program point L16(lines 11 17) the Hoare annotation is: (<= ULTIMATE.start_main_~x~0 2147483647) [2021-08-27 10:56:28,825 INFO L857 garLoopResultBuilder]: For program point L14(line 14) no Hoare annotation was computed. [2021-08-27 10:56:28,825 INFO L857 garLoopResultBuilder]: For program point L14-1(line 14) no Hoare annotation was computed. [2021-08-27 10:56:28,825 INFO L853 garLoopResultBuilder]: At program point L13-2(lines 13 15) the Hoare annotation is: (<= ULTIMATE.start_main_~x~0 2147483647) [2021-08-27 10:56:28,825 INFO L857 garLoopResultBuilder]: For program point L13-3(lines 13 15) no Hoare annotation was computed. [2021-08-27 10:56:28,828 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-27 10:56:28,835 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.08 10:56:28 BoogieIcfgContainer [2021-08-27 10:56:28,836 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-27 10:56:28,836 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-27 10:56:28,836 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-27 10:56:28,837 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-27 10:56:28,837 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 10:56:28" (3/4) ... [2021-08-27 10:56:28,839 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-08-27 10:56:28,845 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2021-08-27 10:56:28,845 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-08-27 10:56:28,872 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-27 10:56:28,872 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-27 10:56:28,874 INFO L168 Benchmark]: Toolchain (without parser) took 832.45 ms. Allocated memory was 60.8 MB in the beginning and 86.0 MB in the end (delta: 25.2 MB). Free memory was 41.4 MB in the beginning and 53.6 MB in the end (delta: -12.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-08-27 10:56:28,874 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 60.8 MB. Free memory is still 42.9 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 10:56:28,875 INFO L168 Benchmark]: CACSL2BoogieTranslator took 116.40 ms. Allocated memory is still 60.8 MB. Free memory was 41.2 MB in the beginning and 32.9 MB in the end (delta: 8.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-08-27 10:56:28,875 INFO L168 Benchmark]: Boogie Procedure Inliner took 21.24 ms. Allocated memory is still 60.8 MB. Free memory was 32.9 MB in the beginning and 31.6 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-27 10:56:28,875 INFO L168 Benchmark]: Boogie Preprocessor took 13.89 ms. Allocated memory is still 60.8 MB. Free memory was 31.5 MB in the beginning and 30.7 MB in the end (delta: 800.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 10:56:28,876 INFO L168 Benchmark]: RCFGBuilder took 289.29 ms. Allocated memory is still 60.8 MB. Free memory was 30.6 MB in the beginning and 37.2 MB in the end (delta: -6.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-08-27 10:56:28,876 INFO L168 Benchmark]: TraceAbstraction took 348.89 ms. Allocated memory was 60.8 MB in the beginning and 86.0 MB in the end (delta: 25.2 MB). Free memory was 36.7 MB in the beginning and 56.1 MB in the end (delta: -19.4 MB). Peak memory consumption was 5.7 MB. Max. memory is 16.1 GB. [2021-08-27 10:56:28,876 INFO L168 Benchmark]: Witness Printer took 36.18 ms. Allocated memory is still 86.0 MB. Free memory was 55.7 MB in the beginning and 53.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-27 10:56:28,881 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 60.8 MB. Free memory is still 42.9 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 116.40 ms. Allocated memory is still 60.8 MB. Free memory was 41.2 MB in the beginning and 32.9 MB in the end (delta: 8.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 21.24 ms. Allocated memory is still 60.8 MB. Free memory was 32.9 MB in the beginning and 31.6 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 13.89 ms. Allocated memory is still 60.8 MB. Free memory was 31.5 MB in the beginning and 30.7 MB in the end (delta: 800.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 289.29 ms. Allocated memory is still 60.8 MB. Free memory was 30.6 MB in the beginning and 37.2 MB in the end (delta: -6.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * TraceAbstraction took 348.89 ms. Allocated memory was 60.8 MB in the beginning and 86.0 MB in the end (delta: 25.2 MB). Free memory was 36.7 MB in the beginning and 56.1 MB in the end (delta: -19.4 MB). Peak memory consumption was 5.7 MB. Max. memory is 16.1 GB. * Witness Printer took 36.18 ms. Allocated memory is still 86.0 MB. Free memory was 55.7 MB in the beginning and 53.6 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: 14]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 14]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 10 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 298.7ms, OverallIterations: 1, TraceHistogramMax: 1, EmptinessCheckTime: 5.7ms, AutomataDifference: 54.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 11.1ms, InitialAbstractionConstructionTime: 6.7ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 4 SDtfs, 7 SDslu, 3 SDs, 0 SdLazy, 7 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 9.8ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 28.8ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=10occurred in iteration=0, InterpolantAutomatonStates: 4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 6.6ms AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 3 NumberOfFragments, 6 HoareAnnotationTreeSize, 2 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 2.8ms HoareSimplificationTime, 2 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 3.9ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 2.1ms SsaConstructionTime, 14.6ms SatisfiabilityAnalysisTime, 102.8ms InterpolantComputationTime, 3 NumberOfCodeBlocks, 3 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 2 ConstructedInterpolants, 0 QuantifiedInterpolants, 10 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 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 2 specifications checked. All of them hold - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: x <= 2147483647 - InvariantResult [Line: 13]: Loop Invariant Derived loop invariant: x <= 2147483647 RESULT: Ultimate proved your program to be correct! [2021-08-27 10:56:28,921 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...