./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/termination-crafted-lit/Urban-WST2013-Fig2-modified1000.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/Urban-WST2013-Fig2-modified1000.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 2b2cc94eb5b8374a9980482fd0dfec59d6d2cf62 ......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 10:56:45,305 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-27 10:56:45,306 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-27 10:56:45,338 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-27 10:56:45,338 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-27 10:56:45,342 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-27 10:56:45,343 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-27 10:56:45,348 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-27 10:56:45,355 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-27 10:56:45,359 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-27 10:56:45,360 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-27 10:56:45,363 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-27 10:56:45,364 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-27 10:56:45,366 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-27 10:56:45,367 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-27 10:56:45,370 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-27 10:56:45,371 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-27 10:56:45,371 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-27 10:56:45,373 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-27 10:56:45,379 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-27 10:56:45,380 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-27 10:56:45,385 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-27 10:56:45,387 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-27 10:56:45,388 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-27 10:56:45,393 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-27 10:56:45,394 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-27 10:56:45,394 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-27 10:56:45,395 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-27 10:56:45,396 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-27 10:56:45,396 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-27 10:56:45,397 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-27 10:56:45,397 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-27 10:56:45,399 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-27 10:56:45,400 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-27 10:56:45,401 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-27 10:56:45,401 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-27 10:56:45,402 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-27 10:56:45,402 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-27 10:56:45,402 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-27 10:56:45,403 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-27 10:56:45,404 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-27 10:56:45,405 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Default.epf [2021-08-27 10:56:45,440 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-27 10:56:45,441 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-27 10:56:45,442 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-27 10:56:45,442 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-27 10:56:45,443 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-27 10:56:45,444 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-27 10:56:45,444 INFO L138 SettingsManager]: * Use SBE=true [2021-08-27 10:56:45,444 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-27 10:56:45,444 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-08-27 10:56:45,444 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-27 10:56:45,445 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-27 10:56:45,445 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-27 10:56:45,445 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-27 10:56:45,446 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-27 10:56:45,446 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-08-27 10:56:45,446 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-27 10:56:45,446 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-27 10:56:45,446 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-27 10:56:45,447 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-27 10:56:45,447 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-27 10:56:45,447 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-27 10:56:45,447 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-27 10:56:45,447 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-27 10:56:45,447 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-27 10:56:45,448 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-27 10:56:45,448 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-27 10:56:45,448 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-27 10:56:45,448 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-27 10:56:45,448 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-27 10:56:45,449 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2b2cc94eb5b8374a9980482fd0dfec59d6d2cf62 [2021-08-27 10:56:45,746 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-27 10:56:45,772 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-27 10:56:45,774 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-27 10:56:45,775 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-27 10:56:45,777 INFO L275 PluginConnector]: CDTParser initialized [2021-08-27 10:56:45,777 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-crafted-lit/Urban-WST2013-Fig2-modified1000.c [2021-08-27 10:56:45,840 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/195ec6817/8c78ca4aa078493d8ee83fc11b761d56/FLAG0895fe6f2 [2021-08-27 10:56:46,272 INFO L306 CDTParser]: Found 1 translation units. [2021-08-27 10:56:46,273 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted-lit/Urban-WST2013-Fig2-modified1000.c [2021-08-27 10:56:46,281 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/195ec6817/8c78ca4aa078493d8ee83fc11b761d56/FLAG0895fe6f2 [2021-08-27 10:56:46,300 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/195ec6817/8c78ca4aa078493d8ee83fc11b761d56 [2021-08-27 10:56:46,303 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-27 10:56:46,305 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-27 10:56:46,308 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-27 10:56:46,308 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-27 10:56:46,314 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-27 10:56:46,315 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 10:56:46" (1/1) ... [2021-08-27 10:56:46,315 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@491f0342 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:56:46, skipping insertion in model container [2021-08-27 10:56:46,316 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 10:56:46" (1/1) ... [2021-08-27 10:56:46,322 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-27 10:56:46,331 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-27 10:56:46,465 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 10:56:46,468 INFO L203 MainTranslator]: Completed pre-run [2021-08-27 10:56:46,480 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 10:56:46,489 INFO L208 MainTranslator]: Completed translation [2021-08-27 10:56:46,490 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:56:46 WrapperNode [2021-08-27 10:56:46,491 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-27 10:56:46,492 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-27 10:56:46,492 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-27 10:56:46,492 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-27 10:56:46,497 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:56:46" (1/1) ... [2021-08-27 10:56:46,502 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:56:46" (1/1) ... [2021-08-27 10:56:46,519 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-27 10:56:46,521 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-27 10:56:46,521 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-27 10:56:46,521 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-27 10:56:46,531 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:56:46" (1/1) ... [2021-08-27 10:56:46,532 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:56:46" (1/1) ... [2021-08-27 10:56:46,533 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:56:46" (1/1) ... [2021-08-27 10:56:46,533 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:56:46" (1/1) ... [2021-08-27 10:56:46,535 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:56:46" (1/1) ... [2021-08-27 10:56:46,538 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:56:46" (1/1) ... [2021-08-27 10:56:46,538 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:56:46" (1/1) ... [2021-08-27 10:56:46,542 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-27 10:56:46,543 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-27 10:56:46,543 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-27 10:56:46,544 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-27 10:56:46,545 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:56:46" (1/1) ... [2021-08-27 10:56:46,550 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-27 10:56:46,556 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 10:56:46,570 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 10:56:46,599 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 10:56:46,615 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-27 10:56:46,616 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-27 10:56:46,793 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-27 10:56:46,793 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2021-08-27 10:56:46,794 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 10:56:46 BoogieIcfgContainer [2021-08-27 10:56:46,795 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-27 10:56:46,797 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-27 10:56:46,797 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-27 10:56:46,799 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-27 10:56:46,799 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.08 10:56:46" (1/3) ... [2021-08-27 10:56:46,800 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69f60d71 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 10:56:46, skipping insertion in model container [2021-08-27 10:56:46,800 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:56:46" (2/3) ... [2021-08-27 10:56:46,801 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69f60d71 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 10:56:46, skipping insertion in model container [2021-08-27 10:56:46,801 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 10:56:46" (3/3) ... [2021-08-27 10:56:46,802 INFO L111 eAbstractionObserver]: Analyzing ICFG Urban-WST2013-Fig2-modified1000.c [2021-08-27 10:56:46,806 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-27 10:56:46,806 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2021-08-27 10:56:46,847 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-27 10:56:46,858 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 10:56:46,861 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-08-27 10:56:46,873 INFO L276 IsEmpty]: Start isEmpty. Operand has 15 states, 10 states have (on average 1.8) internal successors, (18), 14 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) [2021-08-27 10:56:46,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-08-27 10:56:46,877 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 10:56:46,877 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-08-27 10:56:46,878 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-08-27 10:56:46,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 10:56:46,886 INFO L82 PathProgramCache]: Analyzing trace with hash 963476, now seen corresponding path program 1 times [2021-08-27 10:56:46,895 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 10:56:46,896 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933540245] [2021-08-27 10:56:46,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 10:56:46,898 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 10:56:46,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 10:56:47,069 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 10:56:47,078 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 10:56:47,078 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1933540245] [2021-08-27 10:56:47,079 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1933540245] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 10:56:47,079 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 10:56:47,079 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-27 10:56:47,081 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053416813] [2021-08-27 10:56:47,084 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-27 10:56:47,084 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 10:56:47,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-27 10:56:47,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-27 10:56:47,111 INFO L87 Difference]: Start difference. First operand has 15 states, 10 states have (on average 1.8) internal successors, (18), 14 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 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 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 10:56:47,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 10:56:47,194 INFO L93 Difference]: Finished difference Result 32 states and 42 transitions. [2021-08-27 10:56:47,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-27 10:56:47,196 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 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 4 [2021-08-27 10:56:47,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 10:56:47,202 INFO L225 Difference]: With dead ends: 32 [2021-08-27 10:56:47,205 INFO L226 Difference]: Without dead ends: 14 [2021-08-27 10:56:47,207 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.9ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-27 10:56:47,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2021-08-27 10:56:47,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2021-08-27 10:56:47,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 10 states have (on average 1.6) internal successors, (16), 13 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:56:47,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 16 transitions. [2021-08-27 10:56:47,231 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 16 transitions. Word has length 4 [2021-08-27 10:56:47,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 10:56:47,232 INFO L470 AbstractCegarLoop]: Abstraction has 14 states and 16 transitions. [2021-08-27 10:56:47,232 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 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 10:56:47,233 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2021-08-27 10:56:47,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-08-27 10:56:47,233 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 10:56:47,234 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-08-27 10:56:47,234 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-27 10:56:47,234 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-08-27 10:56:47,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 10:56:47,238 INFO L82 PathProgramCache]: Analyzing trace with hash 963531, now seen corresponding path program 1 times [2021-08-27 10:56:47,238 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 10:56:47,238 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1794941346] [2021-08-27 10:56:47,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 10:56:47,239 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 10:56:47,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 10:56:47,284 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 10:56:47,284 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 10:56:47,284 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1794941346] [2021-08-27 10:56:47,285 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1794941346] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 10:56:47,285 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 10:56:47,285 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-27 10:56:47,285 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077197764] [2021-08-27 10:56:47,286 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-27 10:56:47,286 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 10:56:47,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-27 10:56:47,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-27 10:56:47,289 INFO L87 Difference]: Start difference. First operand 14 states and 16 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 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 10:56:47,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 10:56:47,319 INFO L93 Difference]: Finished difference Result 15 states and 17 transitions. [2021-08-27 10:56:47,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-27 10:56:47,320 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 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 4 [2021-08-27 10:56:47,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 10:56:47,321 INFO L225 Difference]: With dead ends: 15 [2021-08-27 10:56:47,321 INFO L226 Difference]: Without dead ends: 14 [2021-08-27 10:56:47,322 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.4ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-27 10:56:47,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2021-08-27 10:56:47,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 13. [2021-08-27 10:56:47,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 10 states have (on average 1.4) internal successors, (14), 12 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:56:47,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2021-08-27 10:56:47,327 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 4 [2021-08-27 10:56:47,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 10:56:47,328 INFO L470 AbstractCegarLoop]: Abstraction has 13 states and 14 transitions. [2021-08-27 10:56:47,328 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 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 10:56:47,329 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 14 transitions. [2021-08-27 10:56:47,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-08-27 10:56:47,330 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 10:56:47,330 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-27 10:56:47,330 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-27 10:56:47,331 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-08-27 10:56:47,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 10:56:47,332 INFO L82 PathProgramCache]: Analyzing trace with hash -1360166603, now seen corresponding path program 1 times [2021-08-27 10:56:47,332 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 10:56:47,333 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [6072594] [2021-08-27 10:56:47,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 10:56:47,333 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 10:56:47,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 10:56:47,379 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 10:56:47,379 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 10:56:47,379 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [6072594] [2021-08-27 10:56:47,380 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [6072594] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:56:47,380 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1716238022] [2021-08-27 10:56:47,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 10:56:47,380 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 10:56:47,381 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 10:56:47,382 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) [2021-08-27 10:56:47,383 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-08-27 10:56:47,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 10:56:47,414 INFO L263 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 2 conjunts are in the unsatisfiable core [2021-08-27 10:56:47,417 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 10:56:47,471 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-08-27 10:56:47,471 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1716238022] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 10:56:47,472 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-08-27 10:56:47,472 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2021-08-27 10:56:47,473 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444144963] [2021-08-27 10:56:47,474 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-27 10:56:47,480 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 10:56:47,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-27 10:56:47,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-08-27 10:56:47,482 INFO L87 Difference]: Start difference. First operand 13 states and 14 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 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 10:56:47,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 10:56:47,498 INFO L93 Difference]: Finished difference Result 13 states and 14 transitions. [2021-08-27 10:56:47,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-27 10:56:47,499 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 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 7 [2021-08-27 10:56:47,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 10:56:47,499 INFO L225 Difference]: With dead ends: 13 [2021-08-27 10:56:47,500 INFO L226 Difference]: Without dead ends: 12 [2021-08-27 10:56:47,500 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 17.7ms TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-08-27 10:56:47,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2021-08-27 10:56:47,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2021-08-27 10:56:47,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 10 states have (on average 1.3) internal successors, (13), 11 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) [2021-08-27 10:56:47,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 13 transitions. [2021-08-27 10:56:47,503 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 13 transitions. Word has length 7 [2021-08-27 10:56:47,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 10:56:47,503 INFO L470 AbstractCegarLoop]: Abstraction has 12 states and 13 transitions. [2021-08-27 10:56:47,503 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 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 10:56:47,503 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 13 transitions. [2021-08-27 10:56:47,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-08-27 10:56:47,504 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 10:56:47,504 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 10:56:47,534 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-08-27 10:56:47,726 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 10:56:47,727 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-08-27 10:56:47,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 10:56:47,727 INFO L82 PathProgramCache]: Analyzing trace with hash 784508327, now seen corresponding path program 1 times [2021-08-27 10:56:47,728 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 10:56:47,728 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146233024] [2021-08-27 10:56:47,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 10:56:47,728 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 10:56:47,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 10:56:47,771 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 10:56:47,771 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 10:56:47,772 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [146233024] [2021-08-27 10:56:47,772 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [146233024] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:56:47,772 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1575810206] [2021-08-27 10:56:47,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 10:56:47,772 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 10:56:47,773 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 10:56:47,774 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) [2021-08-27 10:56:47,775 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-08-27 10:56:47,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 10:56:47,805 INFO L263 TraceCheckSpWp]: Trace formula consists of 21 conjuncts, 3 conjunts are in the unsatisfiable core [2021-08-27 10:56:47,806 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 10:56:47,880 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-08-27 10:56:47,880 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1575810206] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 10:56:47,880 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-08-27 10:56:47,880 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [4] total 5 [2021-08-27 10:56:47,881 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977136465] [2021-08-27 10:56:47,881 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-27 10:56:47,881 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 10:56:47,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-27 10:56:47,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-08-27 10:56:47,882 INFO L87 Difference]: Start difference. First operand 12 states and 13 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 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) [2021-08-27 10:56:47,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 10:56:47,890 INFO L93 Difference]: Finished difference Result 12 states and 13 transitions. [2021-08-27 10:56:47,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-27 10:56:47,891 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 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 [2021-08-27 10:56:47,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 10:56:47,891 INFO L225 Difference]: With dead ends: 12 [2021-08-27 10:56:47,892 INFO L226 Difference]: Without dead ends: 11 [2021-08-27 10:56:47,892 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 15.9ms TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-08-27 10:56:47,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2021-08-27 10:56:47,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2021-08-27 10:56:47,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 10 states have (on average 1.2) internal successors, (12), 10 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:56:47,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 12 transitions. [2021-08-27 10:56:47,894 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 12 transitions. Word has length 8 [2021-08-27 10:56:47,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 10:56:47,895 INFO L470 AbstractCegarLoop]: Abstraction has 11 states and 12 transitions. [2021-08-27 10:56:47,895 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 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) [2021-08-27 10:56:47,895 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 12 transitions. [2021-08-27 10:56:47,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-08-27 10:56:47,896 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 10:56:47,896 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1] [2021-08-27 10:56:47,935 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-08-27 10:56:48,117 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,SelfDestructingSolverStorable3 [2021-08-27 10:56:48,117 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-08-27 10:56:48,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 10:56:48,118 INFO L82 PathProgramCache]: Analyzing trace with hash 784510025, now seen corresponding path program 1 times [2021-08-27 10:56:48,118 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 10:56:48,118 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233440551] [2021-08-27 10:56:48,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 10:56:48,118 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 10:56:48,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 10:56:48,142 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-08-27 10:56:48,142 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 10:56:48,142 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1233440551] [2021-08-27 10:56:48,143 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1233440551] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 10:56:48,143 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 10:56:48,143 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-27 10:56:48,143 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798355017] [2021-08-27 10:56:48,143 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-27 10:56:48,144 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 10:56:48,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-27 10:56:48,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-27 10:56:48,145 INFO L87 Difference]: Start difference. First operand 11 states and 12 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 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) [2021-08-27 10:56:48,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 10:56:48,164 INFO L93 Difference]: Finished difference Result 11 states and 12 transitions. [2021-08-27 10:56:48,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-27 10:56:48,165 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 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 [2021-08-27 10:56:48,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 10:56:48,166 INFO L225 Difference]: With dead ends: 11 [2021-08-27 10:56:48,166 INFO L226 Difference]: Without dead ends: 0 [2021-08-27 10:56:48,166 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.9ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-27 10:56:48,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-08-27 10:56:48,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-08-27 10:56:48,167 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 10:56:48,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-08-27 10:56:48,167 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 8 [2021-08-27 10:56:48,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 10:56:48,167 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-08-27 10:56:48,168 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 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) [2021-08-27 10:56:48,168 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-08-27 10:56:48,168 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-08-27 10:56:48,170 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-08-27 10:56:48,170 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-08-27 10:56:48,171 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-08-27 10:56:48,171 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-08-27 10:56:48,171 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-08-27 10:56:48,173 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-08-27 10:56:48,176 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-27 10:56:48,178 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-27 10:56:48,183 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-27 10:56:48,198 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 22) no Hoare annotation was computed. [2021-08-27 10:56:48,198 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-08-27 10:56:48,198 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 24) no Hoare annotation was computed. [2021-08-27 10:56:48,199 INFO L853 garLoopResultBuilder]: At program point L21-2(lines 21 23) the Hoare annotation is: (and (<= ULTIMATE.start_main_~x2~0 1000) (<= ULTIMATE.start_main_~x1~0 10) (<= 0 (+ ULTIMATE.start_main_~x1~0 2147483648))) [2021-08-27 10:56:48,199 INFO L857 garLoopResultBuilder]: For program point L21-3(lines 21 23) no Hoare annotation was computed. [2021-08-27 10:56:48,199 INFO L853 garLoopResultBuilder]: At program point L19-2(lines 19 25) the Hoare annotation is: (<= 0 (+ ULTIMATE.start_main_~x1~0 2147483648)) [2021-08-27 10:56:48,199 INFO L857 garLoopResultBuilder]: For program point L19-3(lines 19 25) no Hoare annotation was computed. [2021-08-27 10:56:48,199 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 22) no Hoare annotation was computed. [2021-08-27 10:56:48,199 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 24) no Hoare annotation was computed. [2021-08-27 10:56:48,200 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-08-27 10:56:48,200 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-08-27 10:56:48,200 INFO L860 garLoopResultBuilder]: At program point L26(lines 14 27) the Hoare annotation is: true [2021-08-27 10:56:48,200 INFO L857 garLoopResultBuilder]: For program point L24(line 24) no Hoare annotation was computed. [2021-08-27 10:56:48,200 INFO L857 garLoopResultBuilder]: For program point L22(line 22) no Hoare annotation was computed. [2021-08-27 10:56:48,200 INFO L857 garLoopResultBuilder]: For program point L22-1(line 22) no Hoare annotation was computed. [2021-08-27 10:56:48,204 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-27 10:56:48,214 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.08 10:56:48 BoogieIcfgContainer [2021-08-27 10:56:48,214 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-27 10:56:48,214 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-27 10:56:48,214 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-27 10:56:48,215 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-27 10:56:48,215 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 10:56:46" (3/4) ... [2021-08-27 10:56:48,217 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-08-27 10:56:48,224 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2021-08-27 10:56:48,224 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-08-27 10:56:48,247 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-27 10:56:48,247 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-27 10:56:48,249 INFO L168 Benchmark]: Toolchain (without parser) took 1943.35 ms. Allocated memory was 54.5 MB in the beginning and 67.1 MB in the end (delta: 12.6 MB). Free memory was 32.2 MB in the beginning and 41.8 MB in the end (delta: -9.6 MB). Peak memory consumption was 2.7 MB. Max. memory is 16.1 GB. [2021-08-27 10:56:48,249 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 54.5 MB. Free memory was 35.8 MB in the beginning and 35.7 MB in the end (delta: 44.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 10:56:48,249 INFO L168 Benchmark]: CACSL2BoogieTranslator took 182.98 ms. Allocated memory is still 54.5 MB. Free memory was 32.0 MB in the beginning and 23.6 MB in the end (delta: 8.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-08-27 10:56:48,250 INFO L168 Benchmark]: Boogie Procedure Inliner took 28.30 ms. Allocated memory is still 54.5 MB. Free memory was 23.6 MB in the beginning and 37.9 MB in the end (delta: -14.3 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-08-27 10:56:48,250 INFO L168 Benchmark]: Boogie Preprocessor took 21.12 ms. Allocated memory is still 54.5 MB. Free memory was 37.9 MB in the beginning and 36.9 MB in the end (delta: 1.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-27 10:56:48,251 INFO L168 Benchmark]: RCFGBuilder took 252.04 ms. Allocated memory is still 54.5 MB. Free memory was 36.9 MB in the beginning and 27.5 MB in the end (delta: 9.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-08-27 10:56:48,251 INFO L168 Benchmark]: TraceAbstraction took 1416.95 ms. Allocated memory was 54.5 MB in the beginning and 67.1 MB in the end (delta: 12.6 MB). Free memory was 27.1 MB in the beginning and 44.4 MB in the end (delta: -17.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 10:56:48,251 INFO L168 Benchmark]: Witness Printer took 33.24 ms. Allocated memory is still 67.1 MB. Free memory was 44.0 MB in the beginning and 41.8 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-27 10:56:48,253 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 54.5 MB. Free memory was 35.8 MB in the beginning and 35.7 MB in the end (delta: 44.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 182.98 ms. Allocated memory is still 54.5 MB. Free memory was 32.0 MB in the beginning and 23.6 MB in the end (delta: 8.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 28.30 ms. Allocated memory is still 54.5 MB. Free memory was 23.6 MB in the beginning and 37.9 MB in the end (delta: -14.3 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 21.12 ms. Allocated memory is still 54.5 MB. Free memory was 37.9 MB in the beginning and 36.9 MB in the end (delta: 1.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 252.04 ms. Allocated memory is still 54.5 MB. Free memory was 36.9 MB in the beginning and 27.5 MB in the end (delta: 9.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1416.95 ms. Allocated memory was 54.5 MB in the beginning and 67.1 MB in the end (delta: 12.6 MB). Free memory was 27.1 MB in the beginning and 44.4 MB in the end (delta: -17.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 33.24 ms. Allocated memory is still 67.1 MB. Free memory was 44.0 MB in the beginning and 41.8 MB in the end (delta: 2.2 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: 22]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 22]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 24]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 24]: 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, 15 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 1357.4ms, OverallIterations: 5, TraceHistogramMax: 2, EmptinessCheckTime: 9.3ms, AutomataDifference: 209.9ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 26.0ms, InitialAbstractionConstructionTime: 9.1ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 37 SDtfs, 14 SDslu, 10 SDs, 0 SdLazy, 30 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 90.3ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 57.0ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=15occurred in iteration=0, InterpolantAutomatonStates: 15, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 24.4ms AutomataMinimizationTime, 5 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 7 NumberOfFragments, 18 HoareAnnotationTreeSize, 3 FomulaSimplifications, 19 FormulaSimplificationTreeSizeReduction, 8.7ms HoareSimplificationTime, 3 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 12.2ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 11.8ms SsaConstructionTime, 42.9ms SatisfiabilityAnalysisTime, 345.3ms InterpolantComputationTime, 46 NumberOfCodeBlocks, 46 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 39 ConstructedInterpolants, 0 QuantifiedInterpolants, 103 SizeOfPredicates, 0 NumberOfNonLiveVariables, 41 ConjunctsInSsa, 5 ConjunctsInUnsatCore, 7 InterpolantComputations, 5 PerfectInterpolantSequences, 5/7 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 4 specifications checked. All of them hold - InvariantResult [Line: 19]: Loop Invariant Derived loop invariant: 0 <= x1 + 2147483648 - InvariantResult [Line: 21]: Loop Invariant Derived loop invariant: (x2 <= 1000 && x1 <= 10) && 0 <= x1 + 2147483648 - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2021-08-27 10:56:48,291 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...