./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-Fig2a.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/AliasDarteFeautrierGonnord-SAS2010-Fig2a.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 7b8d2b598ac3326e286016998f443939dfd4be1d ......................................................................................................................................................................................................................................................................................................................................................... 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-dev-20ed64e [2021-08-27 10:41:55,143 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-27 10:41:55,146 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-27 10:41:55,193 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-27 10:41:55,194 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-27 10:41:55,197 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-27 10:41:55,198 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-27 10:41:55,203 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-27 10:41:55,205 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-27 10:41:55,209 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-27 10:41:55,210 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-27 10:41:55,213 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-27 10:41:55,214 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-27 10:41:55,216 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-27 10:41:55,217 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-27 10:41:55,224 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-27 10:41:55,224 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-27 10:41:55,225 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-27 10:41:55,226 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-27 10:41:55,227 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-27 10:41:55,228 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-27 10:41:55,230 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-27 10:41:55,231 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-27 10:41:55,232 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-27 10:41:55,241 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-27 10:41:55,242 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-27 10:41:55,242 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-27 10:41:55,243 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-27 10:41:55,244 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-27 10:41:55,244 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-27 10:41:55,244 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-27 10:41:55,245 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-27 10:41:55,246 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-27 10:41:55,247 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-27 10:41:55,248 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-27 10:41:55,248 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-27 10:41:55,249 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-27 10:41:55,249 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-27 10:41:55,249 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-27 10:41:55,250 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-27 10:41:55,251 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-27 10:41:55,252 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Default.epf [2021-08-27 10:41:55,286 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-27 10:41:55,286 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-27 10:41:55,287 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-27 10:41:55,287 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-27 10:41:55,288 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-27 10:41:55,289 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-27 10:41:55,289 INFO L138 SettingsManager]: * Use SBE=true [2021-08-27 10:41:55,289 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-27 10:41:55,289 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-08-27 10:41:55,289 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-27 10:41:55,290 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-27 10:41:55,290 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-27 10:41:55,290 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-27 10:41:55,290 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-27 10:41:55,291 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-08-27 10:41:55,291 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-27 10:41:55,291 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-27 10:41:55,291 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-27 10:41:55,291 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-27 10:41:55,291 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-27 10:41:55,291 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-27 10:41:55,291 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-27 10:41:55,292 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-27 10:41:55,292 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-27 10:41:55,292 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-27 10:41:55,292 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-27 10:41:55,292 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-27 10:41:55,293 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-27 10:41:55,293 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-27 10:41:55,293 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7b8d2b598ac3326e286016998f443939dfd4be1d [2021-08-27 10:41:55,573 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-27 10:41:55,602 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-27 10:41:55,604 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-27 10:41:55,605 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-27 10:41:55,606 INFO L275 PluginConnector]: CDTParser initialized [2021-08-27 10:41:55,607 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-Fig2a.c [2021-08-27 10:41:55,667 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b1f770e76/93f8e65cc654471bb4ebca41059d414a/FLAG31588131e [2021-08-27 10:41:56,057 INFO L306 CDTParser]: Found 1 translation units. [2021-08-27 10:41:56,058 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-Fig2a.c [2021-08-27 10:41:56,063 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b1f770e76/93f8e65cc654471bb4ebca41059d414a/FLAG31588131e [2021-08-27 10:41:56,481 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b1f770e76/93f8e65cc654471bb4ebca41059d414a [2021-08-27 10:41:56,483 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-27 10:41:56,485 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-27 10:41:56,489 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-27 10:41:56,489 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-27 10:41:56,494 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-27 10:41:56,495 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 10:41:56" (1/1) ... [2021-08-27 10:41:56,495 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6136743c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:41:56, skipping insertion in model container [2021-08-27 10:41:56,496 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 10:41:56" (1/1) ... [2021-08-27 10:41:56,502 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-27 10:41:56,512 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-27 10:41:56,598 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 10:41:56,601 INFO L203 MainTranslator]: Completed pre-run [2021-08-27 10:41:56,611 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 10:41:56,620 INFO L208 MainTranslator]: Completed translation [2021-08-27 10:41:56,621 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:41:56 WrapperNode [2021-08-27 10:41:56,621 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-27 10:41:56,622 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-27 10:41:56,622 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-27 10:41:56,622 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-27 10:41:56,626 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:41:56" (1/1) ... [2021-08-27 10:41:56,629 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:41:56" (1/1) ... [2021-08-27 10:41:56,642 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-27 10:41:56,643 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-27 10:41:56,643 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-27 10:41:56,643 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-27 10:41:56,649 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:41:56" (1/1) ... [2021-08-27 10:41:56,649 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:41:56" (1/1) ... [2021-08-27 10:41:56,650 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:41:56" (1/1) ... [2021-08-27 10:41:56,650 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:41:56" (1/1) ... [2021-08-27 10:41:56,651 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:41:56" (1/1) ... [2021-08-27 10:41:56,654 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:41:56" (1/1) ... [2021-08-27 10:41:56,655 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:41:56" (1/1) ... [2021-08-27 10:41:56,656 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-27 10:41:56,656 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-27 10:41:56,657 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-27 10:41:56,657 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-27 10:41:56,657 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:41:56" (1/1) ... [2021-08-27 10:41:56,665 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-27 10:41:56,673 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 10:41:56,686 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 10:41:56,708 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 10:41:56,733 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-27 10:41:56,734 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-27 10:41:56,900 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-27 10:41:56,901 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2021-08-27 10:41:56,902 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 10:41:56 BoogieIcfgContainer [2021-08-27 10:41:56,902 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-27 10:41:56,903 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-27 10:41:56,904 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-27 10:41:56,906 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-27 10:41:56,906 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.08 10:41:56" (1/3) ... [2021-08-27 10:41:56,907 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@140cc4ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 10:41:56, skipping insertion in model container [2021-08-27 10:41:56,907 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:41:56" (2/3) ... [2021-08-27 10:41:56,907 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@140cc4ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 10:41:56, skipping insertion in model container [2021-08-27 10:41:56,908 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 10:41:56" (3/3) ... [2021-08-27 10:41:56,909 INFO L111 eAbstractionObserver]: Analyzing ICFG AliasDarteFeautrierGonnord-SAS2010-Fig2a.c [2021-08-27 10:41:56,912 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-27 10:41:56,913 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2021-08-27 10:41:56,986 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-27 10:41:56,992 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 10:41:56,993 INFO L340 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2021-08-27 10:41:57,004 INFO L276 IsEmpty]: Start isEmpty. Operand has 29 states, 18 states have (on average 1.8333333333333333) internal successors, (33), 28 states have internal predecessors, (33), 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 10:41:57,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-08-27 10:41:57,008 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 10:41:57,009 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-08-27 10:41:57,009 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-08-27 10:41:57,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 10:41:57,014 INFO L82 PathProgramCache]: Analyzing trace with hash 31073, now seen corresponding path program 1 times [2021-08-27 10:41:57,022 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 10:41:57,023 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157385369] [2021-08-27 10:41:57,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 10:41:57,024 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 10:41:57,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 10:41:57,158 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 10:41:57,159 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 10:41:57,160 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1157385369] [2021-08-27 10:41:57,160 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1157385369] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 10:41:57,161 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 10:41:57,161 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-08-27 10:41:57,162 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1950656241] [2021-08-27 10:41:57,166 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-27 10:41:57,166 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 10:41:57,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-27 10:41:57,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-27 10:41:57,182 INFO L87 Difference]: Start difference. First operand has 29 states, 18 states have (on average 1.8333333333333333) internal successors, (33), 28 states have internal predecessors, (33), 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, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:41:57,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 10:41:57,268 INFO L93 Difference]: Finished difference Result 55 states and 65 transitions. [2021-08-27 10:41:57,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-27 10:41:57,270 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2021-08-27 10:41:57,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 10:41:57,277 INFO L225 Difference]: With dead ends: 55 [2021-08-27 10:41:57,278 INFO L226 Difference]: Without dead ends: 23 [2021-08-27 10:41:57,281 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 12.4ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-27 10:41:57,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2021-08-27 10:41:57,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2021-08-27 10:41:57,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 15 states have (on average 1.6666666666666667) internal successors, (25), 22 states have internal predecessors, (25), 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 10:41:57,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 25 transitions. [2021-08-27 10:41:57,308 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 25 transitions. Word has length 3 [2021-08-27 10:41:57,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 10:41:57,309 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 25 transitions. [2021-08-27 10:41:57,310 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:41:57,310 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 25 transitions. [2021-08-27 10:41:57,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-08-27 10:41:57,311 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 10:41:57,311 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-08-27 10:41:57,311 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-27 10:41:57,312 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-08-27 10:41:57,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 10:41:57,319 INFO L82 PathProgramCache]: Analyzing trace with hash 963307, now seen corresponding path program 1 times [2021-08-27 10:41:57,319 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 10:41:57,320 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1795124166] [2021-08-27 10:41:57,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 10:41:57,320 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 10:41:57,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 10:41:57,354 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 10:41:57,354 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 10:41:57,354 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1795124166] [2021-08-27 10:41:57,355 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1795124166] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 10:41:57,355 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 10:41:57,355 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-27 10:41:57,355 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905200183] [2021-08-27 10:41:57,356 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-27 10:41:57,356 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 10:41:57,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-27 10:41:57,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-27 10:41:57,360 INFO L87 Difference]: Start difference. First operand 23 states and 25 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 10:41:57,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 10:41:57,397 INFO L93 Difference]: Finished difference Result 23 states and 25 transitions. [2021-08-27 10:41:57,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-27 10:41:57,398 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 10:41:57,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 10:41:57,399 INFO L225 Difference]: With dead ends: 23 [2021-08-27 10:41:57,399 INFO L226 Difference]: Without dead ends: 22 [2021-08-27 10:41:57,399 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.4ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-27 10:41:57,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2021-08-27 10:41:57,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2021-08-27 10:41:57,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 15 states have (on average 1.6) internal successors, (24), 21 states have internal predecessors, (24), 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 10:41:57,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 24 transitions. [2021-08-27 10:41:57,407 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 24 transitions. Word has length 4 [2021-08-27 10:41:57,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 10:41:57,408 INFO L470 AbstractCegarLoop]: Abstraction has 22 states and 24 transitions. [2021-08-27 10:41:57,408 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 10:41:57,409 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 24 transitions. [2021-08-27 10:41:57,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-08-27 10:41:57,409 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 10:41:57,410 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-08-27 10:41:57,410 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-27 10:41:57,410 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-08-27 10:41:57,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 10:41:57,412 INFO L82 PathProgramCache]: Analyzing trace with hash 29862563, now seen corresponding path program 1 times [2021-08-27 10:41:57,412 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 10:41:57,412 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [972137765] [2021-08-27 10:41:57,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 10:41:57,413 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 10:41:57,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 10:41:57,427 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 10:41:57,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 10:41:57,443 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 10:41:57,444 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-08-27 10:41:57,444 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-08-27 10:41:57,446 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-08-27 10:41:57,446 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-08-27 10:41:57,446 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-08-27 10:41:57,447 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-08-27 10:41:57,447 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-08-27 10:41:57,447 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-08-27 10:41:57,447 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-08-27 10:41:57,448 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-08-27 10:41:57,448 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-08-27 10:41:57,448 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-08-27 10:41:57,453 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-27 10:41:57,463 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.08 10:41:57 BoogieIcfgContainer [2021-08-27 10:41:57,463 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-27 10:41:57,464 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-27 10:41:57,464 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-27 10:41:57,464 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-27 10:41:57,464 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 10:41:56" (3/4) ... [2021-08-27 10:41:57,466 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-08-27 10:41:57,488 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-27 10:41:57,488 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-27 10:41:57,490 INFO L168 Benchmark]: Toolchain (without parser) took 1003.84 ms. Allocated memory was 60.8 MB in the beginning and 73.4 MB in the end (delta: 12.6 MB). Free memory was 39.6 MB in the beginning and 32.7 MB in the end (delta: 6.9 MB). Peak memory consumption was 21.3 MB. Max. memory is 16.1 GB. [2021-08-27 10:41:57,490 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 60.8 MB. Free memory was 43.3 MB in the beginning and 43.3 MB in the end (delta: 43.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 10:41:57,491 INFO L168 Benchmark]: CACSL2BoogieTranslator took 132.64 ms. Allocated memory is still 60.8 MB. Free memory was 39.4 MB in the beginning and 30.9 MB in the end (delta: 8.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-08-27 10:41:57,491 INFO L168 Benchmark]: Boogie Procedure Inliner took 20.78 ms. Allocated memory is still 60.8 MB. Free memory was 30.9 MB in the beginning and 29.5 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-27 10:41:57,492 INFO L168 Benchmark]: Boogie Preprocessor took 12.68 ms. Allocated memory is still 60.8 MB. Free memory was 29.5 MB in the beginning and 28.6 MB in the end (delta: 943.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 10:41:57,492 INFO L168 Benchmark]: RCFGBuilder took 245.91 ms. Allocated memory is still 60.8 MB. Free memory was 28.6 MB in the beginning and 36.1 MB in the end (delta: -7.5 MB). Peak memory consumption was 7.9 MB. Max. memory is 16.1 GB. [2021-08-27 10:41:57,493 INFO L168 Benchmark]: TraceAbstraction took 559.61 ms. Allocated memory was 60.8 MB in the beginning and 73.4 MB in the end (delta: 12.6 MB). Free memory was 35.7 MB in the beginning and 34.5 MB in the end (delta: 1.2 MB). Peak memory consumption was 13.4 MB. Max. memory is 16.1 GB. [2021-08-27 10:41:57,493 INFO L168 Benchmark]: Witness Printer took 24.90 ms. Allocated memory is still 73.4 MB. Free memory was 34.5 MB in the beginning and 33.0 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-27 10:41:57,496 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 60.8 MB. Free memory was 43.3 MB in the beginning and 43.3 MB in the end (delta: 43.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 132.64 ms. Allocated memory is still 60.8 MB. Free memory was 39.4 MB in the beginning and 30.9 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 20.78 ms. Allocated memory is still 60.8 MB. Free memory was 30.9 MB in the beginning and 29.5 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 12.68 ms. Allocated memory is still 60.8 MB. Free memory was 29.5 MB in the beginning and 28.6 MB in the end (delta: 943.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 245.91 ms. Allocated memory is still 60.8 MB. Free memory was 28.6 MB in the beginning and 36.1 MB in the end (delta: -7.5 MB). Peak memory consumption was 7.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 559.61 ms. Allocated memory was 60.8 MB in the beginning and 73.4 MB in the end (delta: 12.6 MB). Free memory was 35.7 MB in the beginning and 34.5 MB in the end (delta: 1.2 MB). Peak memory consumption was 13.4 MB. Max. memory is 16.1 GB. * Witness Printer took 24.90 ms. Allocated memory is still 73.4 MB. Free memory was 34.5 MB in the beginning and 33.0 MB in the end (delta: 1.4 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 - CounterExampleResult [Line: 19]: integer overflow possible integer overflow possible We found a FailurePath: [L14] int x, y; [L15] x = __VERIFIER_nondet_int() [L16] y = __VERIFIER_nondet_int() [L17] COND TRUE x >= 2 [L18] EXPR x - 1 [L18] x = x - 1 [L19] y + x - UnprovableResult [Line: 18]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 18]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 19]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 21]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 21]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 23]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 23]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 24]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 24]: 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 1 procedures, 29 locations, 10 error locations. Started 1 CEGAR loops. OverallTime: 494.3ms, OverallIterations: 3, TraceHistogramMax: 1, EmptinessCheckTime: 7.6ms, AutomataDifference: 156.5ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 8.1ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 34 SDtfs, 25 SDslu, 8 SDs, 0 SdLazy, 33 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 69.2ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 15.8ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=29occurred in iteration=0, InterpolantAutomatonStates: 6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 22.9ms AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 6.4ms SsaConstructionTime, 30.0ms SatisfiabilityAnalysisTime, 81.0ms InterpolantComputationTime, 12 NumberOfCodeBlocks, 12 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 5 ConstructedInterpolants, 0 QuantifiedInterpolants, 13 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 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! [2021-08-27 10:41:57,526 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...