./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/termination-crafted/Cairo_step2-1.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-crafted/Cairo_step2-1.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 c7d1dab681440b8e4fbe52aab1c781a8a0ad5fbc ................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-5fbdf5b [2021-08-30 22:06:47,815 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-30 22:06:47,817 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-30 22:06:47,856 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-30 22:06:47,857 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-30 22:06:47,860 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-30 22:06:47,861 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-30 22:06:47,865 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-30 22:06:47,867 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-30 22:06:47,870 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-30 22:06:47,871 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-30 22:06:47,874 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-30 22:06:47,874 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-30 22:06:47,876 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-30 22:06:47,877 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-30 22:06:47,880 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-30 22:06:47,880 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-30 22:06:47,881 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-30 22:06:47,882 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-30 22:06:47,887 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-30 22:06:47,888 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-30 22:06:47,889 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-30 22:06:47,890 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-30 22:06:47,891 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-30 22:06:47,894 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-30 22:06:47,894 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-30 22:06:47,894 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-30 22:06:47,895 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-30 22:06:47,895 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-30 22:06:47,896 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-30 22:06:47,896 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-30 22:06:47,896 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-30 22:06:47,897 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-30 22:06:47,897 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-30 22:06:47,898 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-30 22:06:47,898 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-30 22:06:47,899 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-30 22:06:47,899 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-30 22:06:47,899 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-30 22:06:47,900 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-30 22:06:47,901 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-30 22:06:47,904 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Default.epf [2021-08-30 22:06:47,935 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-30 22:06:47,935 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-30 22:06:47,936 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-30 22:06:47,936 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-30 22:06:47,938 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-30 22:06:47,938 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-30 22:06:47,938 INFO L138 SettingsManager]: * Use SBE=true [2021-08-30 22:06:47,938 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-30 22:06:47,939 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-08-30 22:06:47,939 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-30 22:06:47,939 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-30 22:06:47,939 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-30 22:06:47,940 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-30 22:06:47,940 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-30 22:06:47,940 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-08-30 22:06:47,940 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-30 22:06:47,940 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-30 22:06:47,940 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-30 22:06:47,940 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-30 22:06:47,941 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-30 22:06:47,941 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-30 22:06:47,941 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-30 22:06:47,941 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-30 22:06:47,941 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-30 22:06:47,941 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-30 22:06:47,941 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-30 22:06:47,942 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-30 22:06:47,942 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-30 22:06:47,942 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-30 22:06:47,942 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c7d1dab681440b8e4fbe52aab1c781a8a0ad5fbc [2021-08-30 22:06:48,195 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-30 22:06:48,217 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-30 22:06:48,219 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-30 22:06:48,220 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-30 22:06:48,221 INFO L275 PluginConnector]: CDTParser initialized [2021-08-30 22:06:48,222 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-crafted/Cairo_step2-1.c [2021-08-30 22:06:48,264 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c54b293dd/9b95b613b5464324af932e23fd3dd49b/FLAGfdb7704bc [2021-08-30 22:06:48,601 INFO L306 CDTParser]: Found 1 translation units. [2021-08-30 22:06:48,601 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted/Cairo_step2-1.c [2021-08-30 22:06:48,605 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c54b293dd/9b95b613b5464324af932e23fd3dd49b/FLAGfdb7704bc [2021-08-30 22:06:49,046 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c54b293dd/9b95b613b5464324af932e23fd3dd49b [2021-08-30 22:06:49,048 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-30 22:06:49,049 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-30 22:06:49,050 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-30 22:06:49,050 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-30 22:06:49,054 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-30 22:06:49,055 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 10:06:49" (1/1) ... [2021-08-30 22:06:49,055 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e9b7b82 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:06:49, skipping insertion in model container [2021-08-30 22:06:49,055 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 10:06:49" (1/1) ... [2021-08-30 22:06:49,059 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-30 22:06:49,066 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-30 22:06:49,135 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-30 22:06:49,137 INFO L203 MainTranslator]: Completed pre-run [2021-08-30 22:06:49,144 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-30 22:06:49,151 INFO L208 MainTranslator]: Completed translation [2021-08-30 22:06:49,152 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:06:49 WrapperNode [2021-08-30 22:06:49,152 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-30 22:06:49,152 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-30 22:06:49,153 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-30 22:06:49,153 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-30 22:06:49,157 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:06:49" (1/1) ... [2021-08-30 22:06:49,167 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:06:49" (1/1) ... [2021-08-30 22:06:49,190 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-30 22:06:49,191 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-30 22:06:49,191 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-30 22:06:49,192 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-30 22:06:49,196 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:06:49" (1/1) ... [2021-08-30 22:06:49,196 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:06:49" (1/1) ... [2021-08-30 22:06:49,197 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:06:49" (1/1) ... [2021-08-30 22:06:49,197 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:06:49" (1/1) ... [2021-08-30 22:06:49,198 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:06:49" (1/1) ... [2021-08-30 22:06:49,200 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:06:49" (1/1) ... [2021-08-30 22:06:49,201 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:06:49" (1/1) ... [2021-08-30 22:06:49,202 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-30 22:06:49,203 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-30 22:06:49,203 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-30 22:06:49,203 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-30 22:06:49,204 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:06:49" (1/1) ... [2021-08-30 22:06:49,208 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-30 22:06:49,214 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-30 22:06:49,232 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 22:06:49,256 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 22:06:49,260 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-30 22:06:49,260 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-30 22:06:49,330 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-30 22:06:49,330 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-08-30 22:06:49,331 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 10:06:49 BoogieIcfgContainer [2021-08-30 22:06:49,332 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-30 22:06:49,333 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-30 22:06:49,333 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-30 22:06:49,334 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-30 22:06:49,335 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 10:06:49" (1/3) ... [2021-08-30 22:06:49,335 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c3c36cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 10:06:49, skipping insertion in model container [2021-08-30 22:06:49,335 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:06:49" (2/3) ... [2021-08-30 22:06:49,336 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c3c36cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 10:06:49, skipping insertion in model container [2021-08-30 22:06:49,336 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 10:06:49" (3/3) ... [2021-08-30 22:06:49,337 INFO L111 eAbstractionObserver]: Analyzing ICFG Cairo_step2-1.c [2021-08-30 22:06:49,340 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-30 22:06:49,340 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-08-30 22:06:49,367 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-30 22:06:49,371 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 22:06:49,372 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-08-30 22:06:49,380 INFO L276 IsEmpty]: Start isEmpty. Operand has 11 states, 8 states have (on average 1.625) internal successors, (13), 10 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) [2021-08-30 22:06:49,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-08-30 22:06:49,383 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 22:06:49,384 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-08-30 22:06:49,384 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2021-08-30 22:06:49,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 22:06:49,391 INFO L82 PathProgramCache]: Analyzing trace with hash 957573, now seen corresponding path program 1 times [2021-08-30 22:06:49,397 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 22:06:49,397 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2139007913] [2021-08-30 22:06:49,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 22:06:49,398 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 22:06:49,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 22:06:49,518 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 22:06:49,519 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 22:06:49,519 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2139007913] [2021-08-30 22:06:49,520 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2139007913] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 22:06:49,520 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 22:06:49,520 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-08-30 22:06:49,521 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592095801] [2021-08-30 22:06:49,524 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-30 22:06:49,525 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 22:06:49,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-30 22:06:49,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-30 22:06:49,552 INFO L87 Difference]: Start difference. First operand has 11 states, 8 states have (on average 1.625) internal successors, (13), 10 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) Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 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) [2021-08-30 22:06:49,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 22:06:49,588 INFO L93 Difference]: Finished difference Result 15 states and 16 transitions. [2021-08-30 22:06:49,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-30 22:06:49,590 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 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 [2021-08-30 22:06:49,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 22:06:49,595 INFO L225 Difference]: With dead ends: 15 [2021-08-30 22:06:49,595 INFO L226 Difference]: Without dead ends: 6 [2021-08-30 22:06:49,599 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.85ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-30 22:06:49,601 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 7 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.98ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.30ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 26.18ms IncrementalHoareTripleChecker+Time [2021-08-30 22:06:49,602 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 0 Invalid, 12 Unknown, 0 Unchecked, 0.30ms Time], IncrementalHoareTripleChecker [1 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 26.18ms Time] [2021-08-30 22:06:49,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6 states. [2021-08-30 22:06:49,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6 to 6. [2021-08-30 22:06:49,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6 states, 5 states have (on average 1.2) internal successors, (6), 5 states have internal predecessors, (6), 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) [2021-08-30 22:06:49,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 6 transitions. [2021-08-30 22:06:49,620 INFO L78 Accepts]: Start accepts. Automaton has 6 states and 6 transitions. Word has length 4 [2021-08-30 22:06:49,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 22:06:49,620 INFO L470 AbstractCegarLoop]: Abstraction has 6 states and 6 transitions. [2021-08-30 22:06:49,621 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 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) [2021-08-30 22:06:49,621 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states and 6 transitions. [2021-08-30 22:06:49,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-08-30 22:06:49,621 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 22:06:49,621 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-08-30 22:06:49,622 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-30 22:06:49,622 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2021-08-30 22:06:49,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 22:06:49,625 INFO L82 PathProgramCache]: Analyzing trace with hash 29684810, now seen corresponding path program 1 times [2021-08-30 22:06:49,625 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 22:06:49,626 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1290766162] [2021-08-30 22:06:49,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 22:06:49,628 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 22:06:49,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 22:06:49,652 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 22:06:49,653 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 22:06:49,653 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1290766162] [2021-08-30 22:06:49,653 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1290766162] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 22:06:49,653 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 22:06:49,653 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-30 22:06:49,653 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385657317] [2021-08-30 22:06:49,654 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-30 22:06:49,654 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 22:06:49,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-30 22:06:49,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-30 22:06:49,655 INFO L87 Difference]: Start difference. First operand 6 states and 6 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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) [2021-08-30 22:06:49,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 22:06:49,665 INFO L93 Difference]: Finished difference Result 10 states and 10 transitions. [2021-08-30 22:06:49,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-30 22:06:49,666 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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 5 [2021-08-30 22:06:49,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 22:06:49,666 INFO L225 Difference]: With dead ends: 10 [2021-08-30 22:06:49,666 INFO L226 Difference]: Without dead ends: 9 [2021-08-30 22:06:49,667 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.08ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-30 22:06:49,668 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.82ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.10ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.68ms IncrementalHoareTripleChecker+Time [2021-08-30 22:06:49,668 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 11 Unknown, 0 Unchecked, 0.10ms Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 8.68ms Time] [2021-08-30 22:06:49,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2021-08-30 22:06:49,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2021-08-30 22:06:49,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.125) internal successors, (9), 8 states have internal predecessors, (9), 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) [2021-08-30 22:06:49,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2021-08-30 22:06:49,671 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 5 [2021-08-30 22:06:49,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 22:06:49,671 INFO L470 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2021-08-30 22:06:49,671 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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) [2021-08-30 22:06:49,671 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2021-08-30 22:06:49,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-08-30 22:06:49,672 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 22:06:49,672 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1] [2021-08-30 22:06:49,672 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-30 22:06:49,672 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2021-08-30 22:06:49,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 22:06:49,673 INFO L82 PathProgramCache]: Analyzing trace with hash -423045501, now seen corresponding path program 1 times [2021-08-30 22:06:49,673 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 22:06:49,673 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [412821415] [2021-08-30 22:06:49,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 22:06:49,673 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 22:06:49,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 22:06:49,694 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 22:06:49,694 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 22:06:49,695 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [412821415] [2021-08-30 22:06:49,695 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [412821415] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-30 22:06:49,695 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1880126895] [2021-08-30 22:06:49,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 22:06:49,695 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-30 22:06:49,695 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-30 22:06:49,696 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) [2021-08-30 22:06:49,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 22:06:49,724 INFO L263 TraceCheckSpWp]: Trace formula consists of 17 conjuncts, 3 conjunts are in the unsatisfiable core [2021-08-30 22:06:49,726 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 22:06:49,729 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-08-30 22:06:49,767 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 22:06:49,767 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 22:06:49,800 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 22:06:49,800 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1880126895] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-30 22:06:49,800 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-08-30 22:06:49,801 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2021-08-30 22:06:49,801 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695235100] [2021-08-30 22:06:49,801 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-30 22:06:49,801 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 22:06:49,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-30 22:06:49,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-08-30 22:06:49,802 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand has 6 states, 5 states have (on average 3.0) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-30 22:06:49,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 22:06:49,813 INFO L93 Difference]: Finished difference Result 9 states and 9 transitions. [2021-08-30 22:06:49,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-30 22:06:49,813 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-08-30 22:06:49,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 22:06:49,813 INFO L225 Difference]: With dead ends: 9 [2021-08-30 22:06:49,814 INFO L226 Difference]: Without dead ends: 0 [2021-08-30 22:06:49,814 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 15.35ms TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-08-30 22:06:49,815 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.35ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.11ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.96ms IncrementalHoareTripleChecker+Time [2021-08-30 22:06:49,815 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 12 Unknown, 0 Unchecked, 0.11ms Time], IncrementalHoareTripleChecker [4 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 7.96ms Time] [2021-08-30 22:06:49,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-08-30 22:06:49,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-08-30 22:06:49,816 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) [2021-08-30 22:06:49,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-08-30 22:06:49,816 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 8 [2021-08-30 22:06:49,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 22:06:49,816 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-08-30 22:06:49,817 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-30 22:06:49,817 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-08-30 22:06:49,817 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-08-30 22:06:49,818 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2021-08-30 22:06:49,819 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2021-08-30 22:06:49,838 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-08-30 22:06:50,033 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 [2021-08-30 22:06:50,034 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-08-30 22:06:50,037 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-30 22:06:50,040 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-30 22:06:50,054 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 17) no Hoare annotation was computed. [2021-08-30 22:06:50,056 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-08-30 22:06:50,056 INFO L858 garLoopResultBuilder]: For program point L17(line 17) no Hoare annotation was computed. [2021-08-30 22:06:50,056 INFO L858 garLoopResultBuilder]: For program point L17-1(line 17) no Hoare annotation was computed. [2021-08-30 22:06:50,057 INFO L858 garLoopResultBuilder]: For program point L15(lines 15 19) no Hoare annotation was computed. [2021-08-30 22:06:50,057 INFO L858 garLoopResultBuilder]: For program point L15-1(lines 15 19) no Hoare annotation was computed. [2021-08-30 22:06:50,057 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 17) no Hoare annotation was computed. [2021-08-30 22:06:50,057 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-08-30 22:06:50,057 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-08-30 22:06:50,057 INFO L854 garLoopResultBuilder]: At program point L20(lines 11 21) the Hoare annotation is: (<= ULTIMATE.start_main_~x~0 2147483647) [2021-08-30 22:06:50,057 INFO L854 garLoopResultBuilder]: At program point L16-2(lines 16 18) the Hoare annotation is: (and (<= 0 (+ ULTIMATE.start_main_~x~0 1)) (<= ULTIMATE.start_main_~x~0 2147483647)) [2021-08-30 22:06:50,060 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-30 22:06:50,077 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.08 10:06:50 BoogieIcfgContainer [2021-08-30 22:06:50,077 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-30 22:06:50,078 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-30 22:06:50,078 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-30 22:06:50,078 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-30 22:06:50,078 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 10:06:49" (3/4) ... [2021-08-30 22:06:50,080 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-08-30 22:06:50,085 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2021-08-30 22:06:50,085 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-08-30 22:06:50,114 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-30 22:06:50,114 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-30 22:06:50,115 INFO L158 Benchmark]: Toolchain (without parser) took 1065.95ms. Allocated memory was 58.7MB in the beginning and 71.3MB in the end (delta: 12.6MB). Free memory was 37.8MB in the beginning and 42.6MB in the end (delta: -4.8MB). Peak memory consumption was 6.8MB. Max. memory is 16.1GB. [2021-08-30 22:06:50,115 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 58.7MB. Free memory was 40.9MB in the beginning and 40.9MB in the end (delta: 42.6kB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-30 22:06:50,117 INFO L158 Benchmark]: CACSL2BoogieTranslator took 102.23ms. Allocated memory is still 58.7MB. Free memory was 37.7MB in the beginning and 29.2MB in the end (delta: 8.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-08-30 22:06:50,117 INFO L158 Benchmark]: Boogie Procedure Inliner took 38.02ms. Allocated memory is still 58.7MB. Free memory was 29.2MB in the beginning and 42.8MB in the end (delta: -13.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-08-30 22:06:50,117 INFO L158 Benchmark]: Boogie Preprocessor took 10.69ms. Allocated memory is still 58.7MB. Free memory was 42.8MB in the beginning and 42.0MB in the end (delta: 814.9kB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-30 22:06:50,118 INFO L158 Benchmark]: RCFGBuilder took 129.08ms. Allocated memory is still 58.7MB. Free memory was 41.8MB in the beginning and 34.5MB in the end (delta: 7.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2021-08-30 22:06:50,119 INFO L158 Benchmark]: TraceAbstraction took 744.66ms. Allocated memory was 58.7MB in the beginning and 71.3MB in the end (delta: 12.6MB). Free memory was 34.1MB in the beginning and 44.8MB in the end (delta: -10.7MB). Peak memory consumption was 3.9MB. Max. memory is 16.1GB. [2021-08-30 22:06:50,119 INFO L158 Benchmark]: Witness Printer took 36.49ms. Allocated memory is still 71.3MB. Free memory was 44.8MB in the beginning and 42.6MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-08-30 22:06:50,120 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 58.7MB. Free memory was 40.9MB in the beginning and 40.9MB in the end (delta: 42.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 102.23ms. Allocated memory is still 58.7MB. Free memory was 37.7MB in the beginning and 29.2MB in the end (delta: 8.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 38.02ms. Allocated memory is still 58.7MB. Free memory was 29.2MB in the beginning and 42.8MB in the end (delta: -13.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 10.69ms. Allocated memory is still 58.7MB. Free memory was 42.8MB in the beginning and 42.0MB in the end (delta: 814.9kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 129.08ms. Allocated memory is still 58.7MB. Free memory was 41.8MB in the beginning and 34.5MB in the end (delta: 7.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * TraceAbstraction took 744.66ms. Allocated memory was 58.7MB in the beginning and 71.3MB in the end (delta: 12.6MB). Free memory was 34.1MB in the beginning and 44.8MB in the end (delta: -10.7MB). Peak memory consumption was 3.9MB. Max. memory is 16.1GB. * Witness Printer took 36.49ms. Allocated memory is still 71.3MB. Free memory was 44.8MB in the beginning and 42.6MB in the end (delta: 2.2MB). 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 - PositiveResult [Line: 17]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 17]: 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, 11 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 694.05ms, OverallIterations: 3, TraceHistogramMax: 2, EmptinessCheckTime: 6.49ms, AutomataDifference: 107.54ms, DeadEndRemovalTime: 0.00ms, HoareAnnotationTime: 20.09ms, InitialAbstractionConstructionTime: 5.73ms, PartialOrderReductionTime: 0.00ms, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 7 SdHoareTripleChecker+Valid, 42.81ms IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 7 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 35.15ms Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 5 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 30 IncrementalHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 5 mSolverCounterUnsat, 0 mSDtfsCounter, 30 mSolverCounterSat, 0.51ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 26.28ms Time, 0.00ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=11occurred in iteration=0, InterpolantAutomatonStates: 10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.00ms DumpTime, AutomataMinimizationStatistics: 10.78ms AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.00ms HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 4 NumberOfFragments, 12 HoareAnnotationTreeSize, 2 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 4.90ms HoareSimplificationTime, 2 FomulaSimplificationsInter, 8 FormulaSimplificationTreeSizeReductionInter, 11.01ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 7.28ms SsaConstructionTime, 20.57ms SatisfiabilityAnalysisTime, 163.20ms InterpolantComputationTime, 25 NumberOfCodeBlocks, 25 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 28 ConstructedInterpolants, 0 QuantifiedInterpolants, 100 SizeOfPredicates, 0 NumberOfNonLiveVariables, 17 ConjunctsInSsa, 3 ConjunctsInUnsatCore, 5 InterpolantComputations, 2 PerfectInterpolantSequences, 0/9 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - InvariantResult [Line: 16]: Loop Invariant Derived loop invariant: 0 <= x + 1 && x <= 2147483647 - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: x <= 2147483647 RESULT: Ultimate proved your program to be correct! [2021-08-30 22:06:50,148 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...