./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/termination-numeric/Et2_true.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 5fbdf5bf Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/termination-numeric/Et2_true.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 9a16c2ef65c9470765f02a1675d8617e78fbed55 ........................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(OVERFLOW) --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-5fbdf5b [2021-08-30 22:22:08,243 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-30 22:22:08,245 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-30 22:22:08,271 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-30 22:22:08,273 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-30 22:22:08,275 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-30 22:22:08,277 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-30 22:22:08,281 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-30 22:22:08,288 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-30 22:22:08,291 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-30 22:22:08,292 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-30 22:22:08,295 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-30 22:22:08,295 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-30 22:22:08,297 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-30 22:22:08,298 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-30 22:22:08,300 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-30 22:22:08,300 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-30 22:22:08,301 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-30 22:22:08,304 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-30 22:22:08,308 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-30 22:22:08,309 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-30 22:22:08,310 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-30 22:22:08,311 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-30 22:22:08,312 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-30 22:22:08,316 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-30 22:22:08,317 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-30 22:22:08,317 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-30 22:22:08,318 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-30 22:22:08,318 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-30 22:22:08,319 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-30 22:22:08,319 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-30 22:22:08,319 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-30 22:22:08,320 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-30 22:22:08,321 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-30 22:22:08,322 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-30 22:22:08,322 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-30 22:22:08,322 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-30 22:22:08,322 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-30 22:22:08,323 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-30 22:22:08,324 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-30 22:22:08,324 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-30 22:22:08,327 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Default.epf [2021-08-30 22:22:08,349 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-30 22:22:08,349 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-30 22:22:08,349 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-30 22:22:08,349 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-30 22:22:08,350 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-30 22:22:08,350 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-30 22:22:08,350 INFO L138 SettingsManager]: * Use SBE=true [2021-08-30 22:22:08,350 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-30 22:22:08,351 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-08-30 22:22:08,351 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-30 22:22:08,351 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-30 22:22:08,351 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-30 22:22:08,351 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-30 22:22:08,351 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-30 22:22:08,351 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-08-30 22:22:08,351 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-30 22:22:08,352 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-30 22:22:08,352 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-30 22:22:08,352 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-30 22:22:08,352 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-30 22:22:08,352 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-30 22:22:08,352 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-30 22:22:08,352 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-30 22:22:08,353 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-30 22:22:08,353 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-30 22:22:08,353 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-30 22:22:08,353 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-30 22:22:08,353 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-30 22:22:08,353 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-30 22:22:08,353 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9a16c2ef65c9470765f02a1675d8617e78fbed55 [2021-08-30 22:22:08,569 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-30 22:22:08,583 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-30 22:22:08,584 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-30 22:22:08,585 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-30 22:22:08,587 INFO L275 PluginConnector]: CDTParser initialized [2021-08-30 22:22:08,588 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-numeric/Et2_true.c [2021-08-30 22:22:08,632 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2460b1ed4/2a61775091a64602b808d2f16544fdca/FLAG79ad41912 [2021-08-30 22:22:08,960 INFO L306 CDTParser]: Found 1 translation units. [2021-08-30 22:22:08,960 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-numeric/Et2_true.c [2021-08-30 22:22:08,965 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2460b1ed4/2a61775091a64602b808d2f16544fdca/FLAG79ad41912 [2021-08-30 22:22:08,975 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2460b1ed4/2a61775091a64602b808d2f16544fdca [2021-08-30 22:22:08,977 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-30 22:22:08,978 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-30 22:22:08,981 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-30 22:22:08,981 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-30 22:22:08,983 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-30 22:22:08,984 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 10:22:08" (1/1) ... [2021-08-30 22:22:08,984 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30cdc66a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:22:08, skipping insertion in model container [2021-08-30 22:22:08,985 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 10:22:08" (1/1) ... [2021-08-30 22:22:08,989 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-30 22:22:08,997 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-30 22:22:09,104 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-30 22:22:09,107 INFO L203 MainTranslator]: Completed pre-run [2021-08-30 22:22:09,135 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-30 22:22:09,142 INFO L208 MainTranslator]: Completed translation [2021-08-30 22:22:09,143 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:22:09 WrapperNode [2021-08-30 22:22:09,143 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-30 22:22:09,144 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-30 22:22:09,144 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-30 22:22:09,144 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-30 22:22:09,148 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:22:09" (1/1) ... [2021-08-30 22:22:09,152 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:22:09" (1/1) ... [2021-08-30 22:22:09,168 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-30 22:22:09,169 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-30 22:22:09,169 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-30 22:22:09,169 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-30 22:22:09,204 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:22:09" (1/1) ... [2021-08-30 22:22:09,204 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:22:09" (1/1) ... [2021-08-30 22:22:09,205 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:22:09" (1/1) ... [2021-08-30 22:22:09,205 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:22:09" (1/1) ... [2021-08-30 22:22:09,206 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:22:09" (1/1) ... [2021-08-30 22:22:09,207 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:22:09" (1/1) ... [2021-08-30 22:22:09,208 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:22:09" (1/1) ... [2021-08-30 22:22:09,208 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-30 22:22:09,209 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-30 22:22:09,209 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-30 22:22:09,209 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-30 22:22:09,209 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:22:09" (1/1) ... [2021-08-30 22:22:09,217 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-30 22:22:09,225 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-30 22:22:09,242 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) [2021-08-30 22:22:09,281 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 [2021-08-30 22:22:09,291 INFO L130 BoogieDeclarations]: Found specification of procedure loop [2021-08-30 22:22:09,292 INFO L138 BoogieDeclarations]: Found implementation of procedure loop [2021-08-30 22:22:09,292 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-30 22:22:09,293 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-30 22:22:09,429 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-30 22:22:09,429 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2021-08-30 22:22:09,430 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 10:22:09 BoogieIcfgContainer [2021-08-30 22:22:09,430 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-30 22:22:09,431 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-30 22:22:09,432 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-30 22:22:09,433 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-30 22:22:09,434 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 10:22:08" (1/3) ... [2021-08-30 22:22:09,434 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2858633d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 10:22:09, skipping insertion in model container [2021-08-30 22:22:09,434 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:22:09" (2/3) ... [2021-08-30 22:22:09,435 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2858633d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 10:22:09, skipping insertion in model container [2021-08-30 22:22:09,435 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 10:22:09" (3/3) ... [2021-08-30 22:22:09,436 INFO L111 eAbstractionObserver]: Analyzing ICFG Et2_true.c [2021-08-30 22:22:09,439 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-30 22:22:09,439 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2021-08-30 22:22:09,481 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-30 22:22:09,490 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 [2021-08-30 22:22:09,490 INFO L340 AbstractCegarLoop]: Starting to check reachability of 14 error locations. [2021-08-30 22:22:09,501 INFO L276 IsEmpty]: Start isEmpty. Operand has 45 states, 27 states have (on average 1.6666666666666667) internal successors, (45), 42 states have internal predecessors, (45), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-08-30 22:22:09,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-08-30 22:22:09,504 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 22:22:09,504 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-08-30 22:22:09,505 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [loopErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, loopErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, loopErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2021-08-30 22:22:09,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 22:22:09,509 INFO L82 PathProgramCache]: Analyzing trace with hash 66629, now seen corresponding path program 1 times [2021-08-30 22:22:09,514 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 22:22:09,515 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1688267071] [2021-08-30 22:22:09,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 22:22:09,515 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 22:22:09,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-30 22:22:09,565 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-30 22:22:09,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-30 22:22:09,578 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-30 22:22:09,579 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-08-30 22:22:09,579 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 14 remaining) [2021-08-30 22:22:09,581 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location loopErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 14 remaining) [2021-08-30 22:22:09,581 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location loopErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 14 remaining) [2021-08-30 22:22:09,581 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location loopErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 14 remaining) [2021-08-30 22:22:09,581 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location loopErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 14 remaining) [2021-08-30 22:22:09,581 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location loopErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 14 remaining) [2021-08-30 22:22:09,582 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location loopErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 14 remaining) [2021-08-30 22:22:09,582 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location loopErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 14 remaining) [2021-08-30 22:22:09,582 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location loopErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 14 remaining) [2021-08-30 22:22:09,582 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location loopErr8ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 14 remaining) [2021-08-30 22:22:09,583 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location loopErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 14 remaining) [2021-08-30 22:22:09,583 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 14 remaining) [2021-08-30 22:22:09,583 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 14 remaining) [2021-08-30 22:22:09,583 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 14 remaining) [2021-08-30 22:22:09,584 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-30 22:22:09,588 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-30 22:22:09,596 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.08 10:22:09 BoogieIcfgContainer [2021-08-30 22:22:09,596 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-30 22:22:09,599 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-30 22:22:09,599 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-30 22:22:09,600 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-30 22:22:09,600 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 10:22:09" (3/4) ... [2021-08-30 22:22:09,602 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-08-30 22:22:09,618 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-30 22:22:09,619 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-30 22:22:09,620 INFO L158 Benchmark]: Toolchain (without parser) took 641.36ms. Allocated memory was 54.5MB in the beginning and 71.3MB in the end (delta: 16.8MB). Free memory was 31.0MB in the beginning and 48.2MB in the end (delta: -17.2MB). Peak memory consumption was 557.8kB. Max. memory is 16.1GB. [2021-08-30 22:22:09,620 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 54.5MB. Free memory was 36.1MB in the beginning and 36.1MB in the end (delta: 33.5kB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-30 22:22:09,620 INFO L158 Benchmark]: CACSL2BoogieTranslator took 162.51ms. Allocated memory is still 54.5MB. Free memory was 30.8MB in the beginning and 37.5MB in the end (delta: -6.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-08-30 22:22:09,621 INFO L158 Benchmark]: Boogie Procedure Inliner took 24.77ms. Allocated memory is still 54.5MB. Free memory was 37.5MB in the beginning and 35.9MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-08-30 22:22:09,621 INFO L158 Benchmark]: Boogie Preprocessor took 39.35ms. Allocated memory was 54.5MB in the beginning and 71.3MB in the end (delta: 16.8MB). Free memory was 35.9MB in the beginning and 54.5MB in the end (delta: -18.6MB). Peak memory consumption was 2.3MB. Max. memory is 16.1GB. [2021-08-30 22:22:09,621 INFO L158 Benchmark]: RCFGBuilder took 221.53ms. Allocated memory is still 71.3MB. Free memory was 54.3MB in the beginning and 45.6MB in the end (delta: 8.8MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2021-08-30 22:22:09,622 INFO L158 Benchmark]: TraceAbstraction took 164.76ms. Allocated memory is still 71.3MB. Free memory was 45.2MB in the beginning and 50.0MB in the end (delta: -4.8MB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-30 22:22:09,622 INFO L158 Benchmark]: Witness Printer took 20.07ms. Allocated memory is still 71.3MB. Free memory was 50.0MB in the beginning and 48.2MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-08-30 22:22:09,624 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 54.5MB. Free memory was 36.1MB in the beginning and 36.1MB in the end (delta: 33.5kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 162.51ms. Allocated memory is still 54.5MB. Free memory was 30.8MB in the beginning and 37.5MB in the end (delta: -6.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 24.77ms. Allocated memory is still 54.5MB. Free memory was 37.5MB in the beginning and 35.9MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 39.35ms. Allocated memory was 54.5MB in the beginning and 71.3MB in the end (delta: 16.8MB). Free memory was 35.9MB in the beginning and 54.5MB in the end (delta: -18.6MB). Peak memory consumption was 2.3MB. Max. memory is 16.1GB. * RCFGBuilder took 221.53ms. Allocated memory is still 71.3MB. Free memory was 54.3MB in the beginning and 45.6MB in the end (delta: 8.8MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * TraceAbstraction took 164.76ms. Allocated memory is still 71.3MB. Free memory was 45.2MB in the beginning and 50.0MB in the end (delta: -4.8MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 20.07ms. Allocated memory is still 71.3MB. Free memory was 50.0MB in the beginning and 48.2MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.00ms ErrorAutomatonConstructionTimeTotal, 0.00ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.00ms ErrorAutomatonConstructionTimeAvg, 0.00ms ErrorAutomatonDifferenceTimeAvg, 0.00ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 33]: integer overflow possible integer overflow possible We found a FailurePath: [L23] int x = __VERIFIER_nondet_int(); [L24] int y = __VERIFIER_nondet_int(); [L25] int z = __VERIFIER_nondet_int(); [L31] int x = __VERIFIER_nondet_int(); [L32] COND TRUE x < 0 [L33] -x - UnprovableResult [Line: 33]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 33]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 41]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 41]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 41]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 41]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 42]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 42]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 42]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 42]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 33]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 33]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 33]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 45 locations, 14 error locations. Started 1 CEGAR loops. OverallTime: 107.18ms, OverallIterations: 1, TraceHistogramMax: 1, EmptinessCheckTime: 4.43ms, AutomataDifference: 0.00ms, DeadEndRemovalTime: 0.00ms, HoareAnnotationTime: 0.00ms, InitialAbstractionConstructionTime: 8.91ms, PartialOrderReductionTime: 0.00ms, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.00ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=45occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.00ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 5.49ms SsaConstructionTime, 11.21ms SatisfiabilityAnalysisTime, 0.00ms InterpolantComputationTime, 3 NumberOfCodeBlocks, 3 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 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 RESULT: Ultimate proved your program to be incorrect! [2021-08-30 22:22:09,649 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...