./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-counterex1b.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-counterex1b.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 b51d3ff9a76866bd9c6637bca261a8433dd4524e ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 10:42:04,092 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-27 10:42:04,095 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-27 10:42:04,140 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-27 10:42:04,141 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-27 10:42:04,144 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-27 10:42:04,146 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-27 10:42:04,151 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-27 10:42:04,153 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-27 10:42:04,157 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-27 10:42:04,158 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-27 10:42:04,162 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-27 10:42:04,162 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-27 10:42:04,164 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-27 10:42:04,166 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-27 10:42:04,168 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-27 10:42:04,168 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-27 10:42:04,169 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-27 10:42:04,173 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-27 10:42:04,179 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-27 10:42:04,180 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-27 10:42:04,181 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-27 10:42:04,182 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-27 10:42:04,183 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-27 10:42:04,189 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-27 10:42:04,189 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-27 10:42:04,189 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-27 10:42:04,191 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-27 10:42:04,191 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-27 10:42:04,192 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-27 10:42:04,192 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-27 10:42:04,193 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-27 10:42:04,194 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-27 10:42:04,195 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-27 10:42:04,196 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-27 10:42:04,196 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-27 10:42:04,197 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-27 10:42:04,197 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-27 10:42:04,198 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-27 10:42:04,199 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-27 10:42:04,199 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-27 10:42:04,200 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Default.epf [2021-08-27 10:42:04,236 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-27 10:42:04,236 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-27 10:42:04,237 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-27 10:42:04,237 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-27 10:42:04,239 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-27 10:42:04,239 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-27 10:42:04,239 INFO L138 SettingsManager]: * Use SBE=true [2021-08-27 10:42:04,240 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-27 10:42:04,240 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-08-27 10:42:04,240 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-27 10:42:04,241 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-27 10:42:04,241 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-27 10:42:04,241 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-27 10:42:04,242 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-27 10:42:04,242 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-08-27 10:42:04,242 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-27 10:42:04,242 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-27 10:42:04,243 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-27 10:42:04,243 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-27 10:42:04,243 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-27 10:42:04,243 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-27 10:42:04,243 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-27 10:42:04,244 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-27 10:42:04,244 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-27 10:42:04,244 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-27 10:42:04,244 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-27 10:42:04,244 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-27 10:42:04,245 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-27 10:42:04,245 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-27 10:42:04,245 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b51d3ff9a76866bd9c6637bca261a8433dd4524e [2021-08-27 10:42:04,597 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-27 10:42:04,624 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-27 10:42:04,626 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-27 10:42:04,628 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-27 10:42:04,629 INFO L275 PluginConnector]: CDTParser initialized [2021-08-27 10:42:04,629 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-counterex1b.c [2021-08-27 10:42:04,685 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0fda4038e/a15e24c7b3584fd48b6dbf8e98f715fe/FLAG2e6479765 [2021-08-27 10:42:05,114 INFO L306 CDTParser]: Found 1 translation units. [2021-08-27 10:42:05,114 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-counterex1b.c [2021-08-27 10:42:05,124 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0fda4038e/a15e24c7b3584fd48b6dbf8e98f715fe/FLAG2e6479765 [2021-08-27 10:42:05,140 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0fda4038e/a15e24c7b3584fd48b6dbf8e98f715fe [2021-08-27 10:42:05,143 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-27 10:42:05,144 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-27 10:42:05,153 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-27 10:42:05,153 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-27 10:42:05,160 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-27 10:42:05,160 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 10:42:05" (1/1) ... [2021-08-27 10:42:05,161 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@405b699e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:42:05, skipping insertion in model container [2021-08-27 10:42:05,161 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 10:42:05" (1/1) ... [2021-08-27 10:42:05,168 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-27 10:42:05,179 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-27 10:42:05,312 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 10:42:05,315 INFO L203 MainTranslator]: Completed pre-run [2021-08-27 10:42:05,329 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 10:42:05,338 INFO L208 MainTranslator]: Completed translation [2021-08-27 10:42:05,339 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:42:05 WrapperNode [2021-08-27 10:42:05,340 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-27 10:42:05,341 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-27 10:42:05,341 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-27 10:42:05,341 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-27 10:42:05,346 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:42:05" (1/1) ... [2021-08-27 10:42:05,351 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:42:05" (1/1) ... [2021-08-27 10:42:05,377 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-27 10:42:05,378 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-27 10:42:05,378 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-27 10:42:05,386 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-27 10:42:05,392 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:42:05" (1/1) ... [2021-08-27 10:42:05,392 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:42:05" (1/1) ... [2021-08-27 10:42:05,394 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:42:05" (1/1) ... [2021-08-27 10:42:05,394 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:42:05" (1/1) ... [2021-08-27 10:42:05,401 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:42:05" (1/1) ... [2021-08-27 10:42:05,406 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:42:05" (1/1) ... [2021-08-27 10:42:05,410 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:42:05" (1/1) ... [2021-08-27 10:42:05,412 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-27 10:42:05,413 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-27 10:42:05,413 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-27 10:42:05,414 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-27 10:42:05,415 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:42:05" (1/1) ... [2021-08-27 10:42:05,421 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-27 10:42:05,427 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 10:42:05,442 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 10:42:05,464 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 10:42:05,487 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-27 10:42:05,488 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-27 10:42:05,726 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-27 10:42:05,727 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-08-27 10:42:05,728 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 10:42:05 BoogieIcfgContainer [2021-08-27 10:42:05,728 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-27 10:42:05,730 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-27 10:42:05,730 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-27 10:42:05,732 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-27 10:42:05,732 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.08 10:42:05" (1/3) ... [2021-08-27 10:42:05,733 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8cc9867 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 10:42:05, skipping insertion in model container [2021-08-27 10:42:05,733 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:42:05" (2/3) ... [2021-08-27 10:42:05,733 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8cc9867 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 10:42:05, skipping insertion in model container [2021-08-27 10:42:05,734 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 10:42:05" (3/3) ... [2021-08-27 10:42:05,735 INFO L111 eAbstractionObserver]: Analyzing ICFG AliasDarteFeautrierGonnord-SAS2010-counterex1b.c [2021-08-27 10:42:05,738 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-27 10:42:05,739 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2021-08-27 10:42:05,784 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-27 10:42:05,789 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 10:42:05,800 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-08-27 10:42:05,818 INFO L276 IsEmpty]: Start isEmpty. Operand has 24 states, 17 states have (on average 1.8235294117647058) internal successors, (31), 23 states have internal predecessors, (31), 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 10:42:05,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-08-27 10:42:05,822 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 10:42:05,822 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-08-27 10:42:05,823 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-08-27 10:42:05,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 10:42:05,827 INFO L82 PathProgramCache]: Analyzing trace with hash 963948, now seen corresponding path program 1 times [2021-08-27 10:42:05,835 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 10:42:05,836 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [791853781] [2021-08-27 10:42:05,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 10:42:05,837 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 10:42:05,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 10:42:05,938 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 10:42:05,939 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 10:42:05,939 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [791853781] [2021-08-27 10:42:05,940 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [791853781] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 10:42:05,940 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 10:42:05,940 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-27 10:42:05,942 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718604175] [2021-08-27 10:42:05,945 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-08-27 10:42:05,945 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 10:42:05,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-08-27 10:42:05,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-08-27 10:42:05,957 INFO L87 Difference]: Start difference. First operand has 24 states, 17 states have (on average 1.8235294117647058) internal successors, (31), 23 states have internal predecessors, (31), 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 2 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) [2021-08-27 10:42:05,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 10:42:05,969 INFO L93 Difference]: Finished difference Result 47 states and 61 transitions. [2021-08-27 10:42:05,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-08-27 10:42:05,970 INFO L78 Accepts]: Start accepts. Automaton has has 2 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 [2021-08-27 10:42:05,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 10:42:05,976 INFO L225 Difference]: With dead ends: 47 [2021-08-27 10:42:05,976 INFO L226 Difference]: Without dead ends: 20 [2021-08-27 10:42:05,978 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-08-27 10:42:05,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2021-08-27 10:42:05,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2021-08-27 10:42:06,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 14 states have (on average 1.7142857142857142) internal successors, (24), 19 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 10:42:06,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 24 transitions. [2021-08-27 10:42:06,001 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 24 transitions. Word has length 4 [2021-08-27 10:42:06,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 10:42:06,002 INFO L470 AbstractCegarLoop]: Abstraction has 20 states and 24 transitions. [2021-08-27 10:42:06,002 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 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) [2021-08-27 10:42:06,002 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 24 transitions. [2021-08-27 10:42:06,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-08-27 10:42:06,003 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 10:42:06,003 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-08-27 10:42:06,003 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-27 10:42:06,004 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-08-27 10:42:06,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 10:42:06,005 INFO L82 PathProgramCache]: Analyzing trace with hash 925832983, now seen corresponding path program 1 times [2021-08-27 10:42:06,005 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 10:42:06,005 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [549631765] [2021-08-27 10:42:06,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 10:42:06,005 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 10:42:06,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 10:42:06,039 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 10:42:06,039 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 10:42:06,039 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [549631765] [2021-08-27 10:42:06,039 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [549631765] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 10:42:06,040 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 10:42:06,040 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-08-27 10:42:06,040 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214738436] [2021-08-27 10:42:06,041 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-27 10:42:06,041 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 10:42:06,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-27 10:42:06,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-27 10:42:06,042 INFO L87 Difference]: Start difference. First operand 20 states and 24 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 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) [2021-08-27 10:42:06,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 10:42:06,055 INFO L93 Difference]: Finished difference Result 20 states and 24 transitions. [2021-08-27 10:42:06,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-27 10:42:06,056 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 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) Word has length 6 [2021-08-27 10:42:06,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 10:42:06,057 INFO L225 Difference]: With dead ends: 20 [2021-08-27 10:42:06,057 INFO L226 Difference]: Without dead ends: 19 [2021-08-27 10:42:06,058 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.7ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-27 10:42:06,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2021-08-27 10:42:06,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2021-08-27 10:42:06,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 14 states have (on average 1.6428571428571428) internal successors, (23), 18 states have internal predecessors, (23), 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 10:42:06,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 23 transitions. [2021-08-27 10:42:06,061 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 23 transitions. Word has length 6 [2021-08-27 10:42:06,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 10:42:06,062 INFO L470 AbstractCegarLoop]: Abstraction has 19 states and 23 transitions. [2021-08-27 10:42:06,062 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 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) [2021-08-27 10:42:06,062 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 23 transitions. [2021-08-27 10:42:06,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-08-27 10:42:06,063 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 10:42:06,063 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-08-27 10:42:06,063 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-27 10:42:06,063 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-08-27 10:42:06,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 10:42:06,064 INFO L82 PathProgramCache]: Analyzing trace with hash 925833038, now seen corresponding path program 1 times [2021-08-27 10:42:06,064 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 10:42:06,064 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [162904440] [2021-08-27 10:42:06,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 10:42:06,065 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 10:42:06,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 10:42:06,097 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 10:42:06,097 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 10:42:06,097 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [162904440] [2021-08-27 10:42:06,098 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [162904440] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 10:42:06,098 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 10:42:06,098 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-08-27 10:42:06,098 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338594810] [2021-08-27 10:42:06,099 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-27 10:42:06,099 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 10:42:06,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-27 10:42:06,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-27 10:42:06,100 INFO L87 Difference]: Start difference. First operand 19 states and 23 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 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) [2021-08-27 10:42:06,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 10:42:06,140 INFO L93 Difference]: Finished difference Result 34 states and 43 transitions. [2021-08-27 10:42:06,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-27 10:42:06,140 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 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) Word has length 6 [2021-08-27 10:42:06,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 10:42:06,141 INFO L225 Difference]: With dead ends: 34 [2021-08-27 10:42:06,141 INFO L226 Difference]: Without dead ends: 33 [2021-08-27 10:42:06,142 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.8ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-27 10:42:06,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2021-08-27 10:42:06,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 30. [2021-08-27 10:42:06,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 25 states have (on average 1.6) internal successors, (40), 29 states have internal predecessors, (40), 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 10:42:06,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 40 transitions. [2021-08-27 10:42:06,147 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 40 transitions. Word has length 6 [2021-08-27 10:42:06,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 10:42:06,147 INFO L470 AbstractCegarLoop]: Abstraction has 30 states and 40 transitions. [2021-08-27 10:42:06,147 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 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) [2021-08-27 10:42:06,148 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 40 transitions. [2021-08-27 10:42:06,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-08-27 10:42:06,148 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 10:42:06,148 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-27 10:42:06,148 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-08-27 10:42:06,149 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-08-27 10:42:06,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 10:42:06,149 INFO L82 PathProgramCache]: Analyzing trace with hash -1363948532, now seen corresponding path program 1 times [2021-08-27 10:42:06,149 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 10:42:06,150 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1480975553] [2021-08-27 10:42:06,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 10:42:06,150 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 10:42:06,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 10:42:06,173 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 10:42:06,174 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 10:42:06,174 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1480975553] [2021-08-27 10:42:06,174 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1480975553] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 10:42:06,174 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 10:42:06,175 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-27 10:42:06,175 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605561740] [2021-08-27 10:42:06,175 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-27 10:42:06,175 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 10:42:06,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-27 10:42:06,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-27 10:42:06,176 INFO L87 Difference]: Start difference. First operand 30 states and 40 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:42:06,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 10:42:06,186 INFO L93 Difference]: Finished difference Result 30 states and 40 transitions. [2021-08-27 10:42:06,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-27 10:42:06,187 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-08-27 10:42:06,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 10:42:06,187 INFO L225 Difference]: With dead ends: 30 [2021-08-27 10:42:06,188 INFO L226 Difference]: Without dead ends: 29 [2021-08-27 10:42:06,188 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.1ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-27 10:42:06,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-08-27 10:42:06,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2021-08-27 10:42:06,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 25 states have (on average 1.52) internal successors, (38), 28 states have internal predecessors, (38), 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 10:42:06,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 38 transitions. [2021-08-27 10:42:06,192 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 38 transitions. Word has length 7 [2021-08-27 10:42:06,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 10:42:06,192 INFO L470 AbstractCegarLoop]: Abstraction has 29 states and 38 transitions. [2021-08-27 10:42:06,193 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:42:06,193 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 38 transitions. [2021-08-27 10:42:06,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-08-27 10:42:06,193 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 10:42:06,193 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-27 10:42:06,194 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-08-27 10:42:06,194 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-08-27 10:42:06,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 10:42:06,195 INFO L82 PathProgramCache]: Analyzing trace with hash -1363946834, now seen corresponding path program 1 times [2021-08-27 10:42:06,195 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 10:42:06,195 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [186325700] [2021-08-27 10:42:06,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 10:42:06,195 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 10:42:06,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 10:42:06,243 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 10:42:06,243 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 10:42:06,244 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [186325700] [2021-08-27 10:42:06,244 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [186325700] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 10:42:06,245 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 10:42:06,245 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-27 10:42:06,245 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607182612] [2021-08-27 10:42:06,246 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-27 10:42:06,246 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 10:42:06,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-27 10:42:06,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-08-27 10:42:06,247 INFO L87 Difference]: Start difference. First operand 29 states and 38 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:42:06,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 10:42:06,318 INFO L93 Difference]: Finished difference Result 50 states and 68 transitions. [2021-08-27 10:42:06,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-27 10:42:06,318 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-08-27 10:42:06,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 10:42:06,320 INFO L225 Difference]: With dead ends: 50 [2021-08-27 10:42:06,321 INFO L226 Difference]: Without dead ends: 48 [2021-08-27 10:42:06,322 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 15.3ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-08-27 10:42:06,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2021-08-27 10:42:06,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2021-08-27 10:42:06,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 45 states have (on average 1.4444444444444444) internal successors, (65), 47 states have internal predecessors, (65), 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 10:42:06,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 65 transitions. [2021-08-27 10:42:06,343 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 65 transitions. Word has length 7 [2021-08-27 10:42:06,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 10:42:06,343 INFO L470 AbstractCegarLoop]: Abstraction has 48 states and 65 transitions. [2021-08-27 10:42:06,344 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:42:06,344 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 65 transitions. [2021-08-27 10:42:06,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-08-27 10:42:06,344 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 10:42:06,344 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 10:42:06,345 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-08-27 10:42:06,345 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-08-27 10:42:06,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 10:42:06,346 INFO L82 PathProgramCache]: Analyzing trace with hash 1488503985, now seen corresponding path program 1 times [2021-08-27 10:42:06,346 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 10:42:06,346 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [606630773] [2021-08-27 10:42:06,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 10:42:06,347 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 10:42:06,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 10:42:06,371 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 10:42:06,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 10:42:06,404 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 10:42:06,404 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-08-27 10:42:06,405 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-08-27 10:42:06,407 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-08-27 10:42:06,407 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-08-27 10:42:06,408 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-08-27 10:42:06,408 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-08-27 10:42:06,408 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-08-27 10:42:06,409 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-08-27 10:42:06,414 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-27 10:42:06,427 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.08 10:42:06 BoogieIcfgContainer [2021-08-27 10:42:06,427 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-27 10:42:06,428 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-27 10:42:06,430 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-27 10:42:06,430 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-27 10:42:06,431 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 10:42:05" (3/4) ... [2021-08-27 10:42:06,432 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-08-27 10:42:06,467 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-27 10:42:06,467 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-27 10:42:06,469 INFO L168 Benchmark]: Toolchain (without parser) took 1323.45 ms. Allocated memory was 60.8 MB in the beginning and 75.5 MB in the end (delta: 14.7 MB). Free memory was 39.9 MB in the beginning and 30.1 MB in the end (delta: 9.9 MB). Peak memory consumption was 23.5 MB. Max. memory is 16.1 GB. [2021-08-27 10:42:06,469 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 60.8 MB. Free memory was 43.0 MB in the beginning and 43.0 MB in the end (delta: 38.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 10:42:06,470 INFO L168 Benchmark]: CACSL2BoogieTranslator took 186.82 ms. Allocated memory is still 60.8 MB. Free memory was 39.7 MB in the beginning and 31.1 MB in the end (delta: 8.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-08-27 10:42:06,475 INFO L168 Benchmark]: Boogie Procedure Inliner took 36.92 ms. Allocated memory is still 60.8 MB. Free memory was 31.1 MB in the beginning and 45.0 MB in the end (delta: -13.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-08-27 10:42:06,475 INFO L168 Benchmark]: Boogie Preprocessor took 34.07 ms. Allocated memory is still 60.8 MB. Free memory was 45.0 MB in the beginning and 44.1 MB in the end (delta: 888.1 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-27 10:42:06,476 INFO L168 Benchmark]: RCFGBuilder took 315.34 ms. Allocated memory is still 60.8 MB. Free memory was 44.1 MB in the beginning and 32.5 MB in the end (delta: 11.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-08-27 10:42:06,476 INFO L168 Benchmark]: TraceAbstraction took 697.84 ms. Allocated memory was 60.8 MB in the beginning and 75.5 MB in the end (delta: 14.7 MB). Free memory was 32.0 MB in the beginning and 31.7 MB in the end (delta: 296.9 kB). Peak memory consumption was 16.5 MB. Max. memory is 16.1 GB. [2021-08-27 10:42:06,476 INFO L168 Benchmark]: Witness Printer took 39.28 ms. Allocated memory is still 75.5 MB. Free memory was 31.7 MB in the beginning and 30.1 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-27 10:42:06,479 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 60.8 MB. Free memory was 43.0 MB in the beginning and 43.0 MB in the end (delta: 38.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 186.82 ms. Allocated memory is still 60.8 MB. Free memory was 39.7 MB in the beginning and 31.1 MB in the end (delta: 8.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 36.92 ms. Allocated memory is still 60.8 MB. Free memory was 31.1 MB in the beginning and 45.0 MB in the end (delta: -13.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 34.07 ms. Allocated memory is still 60.8 MB. Free memory was 45.0 MB in the beginning and 44.1 MB in the end (delta: 888.1 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 315.34 ms. Allocated memory is still 60.8 MB. Free memory was 44.1 MB in the beginning and 32.5 MB in the end (delta: 11.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 697.84 ms. Allocated memory was 60.8 MB in the beginning and 75.5 MB in the end (delta: 14.7 MB). Free memory was 32.0 MB in the beginning and 31.7 MB in the end (delta: 296.9 kB). Peak memory consumption was 16.5 MB. Max. memory is 16.1 GB. * Witness Printer took 39.28 ms. Allocated memory is still 75.5 MB. Free memory was 31.7 MB in the beginning and 30.1 MB in the end (delta: 1.7 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: 24]: integer overflow possible integer overflow possible We found a FailurePath: [L14] int x, y, n; [L15] n = __VERIFIER_nondet_int() [L16] x = __VERIFIER_nondet_int() [L17] y = __VERIFIER_nondet_int() [L18] COND TRUE x >= 0 [L19] y >= 0 && __VERIFIER_nondet_int() != 0 [L19] y >= 0 && __VERIFIER_nondet_int() != 0 [L19] COND FALSE !(y >= 0 && __VERIFIER_nondet_int() != 0) [L22] EXPR x - 1 [L22] x = x - 1 [L23] y <= n && __VERIFIER_nondet_int() != 0 [L23] y <= n && __VERIFIER_nondet_int() != 0 [L23] COND TRUE y <= n && __VERIFIER_nondet_int() != 0 [L24] y + 1 - UnprovableResult [Line: 20]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 20]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 22]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 22]: 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, 24 locations, 6 error locations. Started 1 CEGAR loops. OverallTime: 630.7ms, OverallIterations: 6, TraceHistogramMax: 1, EmptinessCheckTime: 15.1ms, AutomataDifference: 179.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 8.0ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 96 SDtfs, 67 SDslu, 28 SDs, 0 SdLazy, 43 SolverSat, 12 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 75.7ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 30.1ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=48occurred in iteration=5, InterpolantAutomatonStates: 15, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 45.6ms AutomataMinimizationTime, 5 MinimizatonAttempts, 3 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 9.6ms SsaConstructionTime, 45.8ms SatisfiabilityAnalysisTime, 140.3ms InterpolantComputationTime, 41 NumberOfCodeBlocks, 41 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 25 ConstructedInterpolants, 0 QuantifiedInterpolants, 66 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 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 10:42:06,527 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...