./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/termination-crafted-lit/PodelskiRybalchenko-TACAS2011-Fig3.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 35987657 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/PodelskiRybalchenko-TACAS2011-Fig3.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 ab66f9f89348f915f5a709aa03ac6e16c276dad15b53c460d26f0885e78d4ce7 --- Real Ultimate output --- This is Ultimate 0.2.2-?-3598765 [2022-07-22 00:36:39,312 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-22 00:36:39,314 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-22 00:36:39,339 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-22 00:36:39,339 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-22 00:36:39,340 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-22 00:36:39,341 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-22 00:36:39,342 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-22 00:36:39,343 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-22 00:36:39,344 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-22 00:36:39,345 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-22 00:36:39,346 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-22 00:36:39,346 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-22 00:36:39,347 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-22 00:36:39,347 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-22 00:36:39,348 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-22 00:36:39,349 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-22 00:36:39,349 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-22 00:36:39,351 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-22 00:36:39,352 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-22 00:36:39,353 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-22 00:36:39,354 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-22 00:36:39,354 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-22 00:36:39,355 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-22 00:36:39,356 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-22 00:36:39,357 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-22 00:36:39,358 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-22 00:36:39,358 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-22 00:36:39,359 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-22 00:36:39,359 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-22 00:36:39,360 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-22 00:36:39,360 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-22 00:36:39,361 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-22 00:36:39,361 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-22 00:36:39,362 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-22 00:36:39,363 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-22 00:36:39,363 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-22 00:36:39,363 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-22 00:36:39,364 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-22 00:36:39,364 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-22 00:36:39,365 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-22 00:36:39,365 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-22 00:36:39,366 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Default.epf [2022-07-22 00:36:39,380 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-22 00:36:39,381 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-22 00:36:39,381 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-22 00:36:39,381 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-22 00:36:39,382 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-22 00:36:39,382 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-22 00:36:39,382 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-22 00:36:39,383 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-22 00:36:39,383 INFO L138 SettingsManager]: * Use SBE=true [2022-07-22 00:36:39,383 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-22 00:36:39,383 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-07-22 00:36:39,383 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-22 00:36:39,384 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-22 00:36:39,384 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-22 00:36:39,384 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-22 00:36:39,384 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-22 00:36:39,384 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-07-22 00:36:39,385 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-22 00:36:39,385 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-22 00:36:39,385 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-22 00:36:39,385 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-22 00:36:39,385 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-22 00:36:39,385 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-22 00:36:39,386 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 00:36:39,386 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-22 00:36:39,386 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-22 00:36:39,386 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-22 00:36:39,386 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-22 00:36:39,386 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-22 00:36:39,387 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-22 00:36:39,387 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ab66f9f89348f915f5a709aa03ac6e16c276dad15b53c460d26f0885e78d4ce7 [2022-07-22 00:36:39,651 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-22 00:36:39,690 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-22 00:36:39,692 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-22 00:36:39,693 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-22 00:36:39,694 INFO L275 PluginConnector]: CDTParser initialized [2022-07-22 00:36:39,695 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-crafted-lit/PodelskiRybalchenko-TACAS2011-Fig3.c [2022-07-22 00:36:39,741 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f417ca113/24d3b3498b8242d390e68e31857b61e2/FLAG8bcc80315 [2022-07-22 00:36:40,103 INFO L306 CDTParser]: Found 1 translation units. [2022-07-22 00:36:40,103 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted-lit/PodelskiRybalchenko-TACAS2011-Fig3.c [2022-07-22 00:36:40,108 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f417ca113/24d3b3498b8242d390e68e31857b61e2/FLAG8bcc80315 [2022-07-22 00:36:40,122 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f417ca113/24d3b3498b8242d390e68e31857b61e2 [2022-07-22 00:36:40,125 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-22 00:36:40,126 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-22 00:36:40,127 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-22 00:36:40,128 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-22 00:36:40,130 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-22 00:36:40,130 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 12:36:40" (1/1) ... [2022-07-22 00:36:40,131 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c2c75c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:36:40, skipping insertion in model container [2022-07-22 00:36:40,131 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 12:36:40" (1/1) ... [2022-07-22 00:36:40,135 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-22 00:36:40,147 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-22 00:36:40,273 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 00:36:40,276 INFO L203 MainTranslator]: Completed pre-run [2022-07-22 00:36:40,287 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 00:36:40,294 INFO L208 MainTranslator]: Completed translation [2022-07-22 00:36:40,295 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:36:40 WrapperNode [2022-07-22 00:36:40,295 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-22 00:36:40,296 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-22 00:36:40,296 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-22 00:36:40,297 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-22 00:36:40,302 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:36:40" (1/1) ... [2022-07-22 00:36:40,306 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:36:40" (1/1) ... [2022-07-22 00:36:40,351 INFO L137 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 30 [2022-07-22 00:36:40,351 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-22 00:36:40,352 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-22 00:36:40,352 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-22 00:36:40,352 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-22 00:36:40,357 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:36:40" (1/1) ... [2022-07-22 00:36:40,358 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:36:40" (1/1) ... [2022-07-22 00:36:40,359 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:36:40" (1/1) ... [2022-07-22 00:36:40,359 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:36:40" (1/1) ... [2022-07-22 00:36:40,360 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:36:40" (1/1) ... [2022-07-22 00:36:40,363 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:36:40" (1/1) ... [2022-07-22 00:36:40,366 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:36:40" (1/1) ... [2022-07-22 00:36:40,367 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-22 00:36:40,368 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-22 00:36:40,368 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-22 00:36:40,369 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-22 00:36:40,369 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:36:40" (1/1) ... [2022-07-22 00:36:40,375 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 00:36:40,381 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 00:36:40,425 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) [2022-07-22 00:36:40,440 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 [2022-07-22 00:36:40,467 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-22 00:36:40,467 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-22 00:36:40,500 INFO L234 CfgBuilder]: Building ICFG [2022-07-22 00:36:40,501 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-22 00:36:40,569 INFO L275 CfgBuilder]: Performing block encoding [2022-07-22 00:36:40,573 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-22 00:36:40,573 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-22 00:36:40,574 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 12:36:40 BoogieIcfgContainer [2022-07-22 00:36:40,575 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-22 00:36:40,576 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-22 00:36:40,576 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-22 00:36:40,578 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-22 00:36:40,578 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 12:36:40" (1/3) ... [2022-07-22 00:36:40,578 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1756793d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 12:36:40, skipping insertion in model container [2022-07-22 00:36:40,578 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:36:40" (2/3) ... [2022-07-22 00:36:40,579 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1756793d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 12:36:40, skipping insertion in model container [2022-07-22 00:36:40,579 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 12:36:40" (3/3) ... [2022-07-22 00:36:40,580 INFO L111 eAbstractionObserver]: Analyzing ICFG PodelskiRybalchenko-TACAS2011-Fig3.c [2022-07-22 00:36:40,588 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-22 00:36:40,588 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2022-07-22 00:36:40,614 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-22 00:36:40,618 INFO L357 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, mAutomataTypeConcurrency=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, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@3d0d100e, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@7c795248 [2022-07-22 00:36:40,618 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2022-07-22 00:36:40,620 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 13 states have (on average 1.6923076923076923) internal successors, (22), 19 states have internal predecessors, (22), 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) [2022-07-22 00:36:40,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-07-22 00:36:40,624 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 00:36:40,624 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-07-22 00:36:40,625 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-07-22 00:36:40,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 00:36:40,628 INFO L85 PathProgramCache]: Analyzing trace with hash 28699945, now seen corresponding path program 1 times [2022-07-22 00:36:40,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 00:36:40,634 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [451702583] [2022-07-22 00:36:40,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 00:36:40,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 00:36:40,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:36:40,773 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 00:36:40,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 00:36:40,788 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [451702583] [2022-07-22 00:36:40,788 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [451702583] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 00:36:40,789 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 00:36:40,789 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 00:36:40,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748506145] [2022-07-22 00:36:40,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 00:36:40,793 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 00:36:40,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 00:36:40,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 00:36:40,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 00:36:40,823 INFO L87 Difference]: Start difference. First operand has 20 states, 13 states have (on average 1.6923076923076923) internal successors, (22), 19 states have internal predecessors, (22), 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 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 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) [2022-07-22 00:36:40,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 00:36:40,857 INFO L93 Difference]: Finished difference Result 47 states and 51 transitions. [2022-07-22 00:36:40,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 00:36:40,859 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 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 [2022-07-22 00:36:40,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 00:36:40,863 INFO L225 Difference]: With dead ends: 47 [2022-07-22 00:36:40,864 INFO L226 Difference]: Without dead ends: 30 [2022-07-22 00:36:40,865 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-22 00:36:40,868 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 32 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 00:36:40,869 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 51 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 00:36:40,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2022-07-22 00:36:40,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 19. [2022-07-22 00:36:40,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 18 states have internal predecessors, (21), 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) [2022-07-22 00:36:40,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2022-07-22 00:36:40,891 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 5 [2022-07-22 00:36:40,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 00:36:40,892 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2022-07-22 00:36:40,892 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 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) [2022-07-22 00:36:40,892 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2022-07-22 00:36:40,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-07-22 00:36:40,893 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 00:36:40,893 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-07-22 00:36:40,893 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-22 00:36:40,894 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-07-22 00:36:40,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 00:36:40,894 INFO L85 PathProgramCache]: Analyzing trace with hash 28699753, now seen corresponding path program 1 times [2022-07-22 00:36:40,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 00:36:40,895 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [376148447] [2022-07-22 00:36:40,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 00:36:40,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 00:36:40,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:36:40,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 00:36:40,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 00:36:40,940 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [376148447] [2022-07-22 00:36:40,941 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [376148447] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 00:36:40,941 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 00:36:40,941 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 00:36:40,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516999398] [2022-07-22 00:36:40,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 00:36:40,943 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 00:36:40,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 00:36:40,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 00:36:40,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 00:36:40,945 INFO L87 Difference]: Start difference. First operand 19 states and 21 transitions. Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 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) [2022-07-22 00:36:40,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 00:36:40,992 INFO L93 Difference]: Finished difference Result 32 states and 35 transitions. [2022-07-22 00:36:40,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 00:36:40,993 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 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 [2022-07-22 00:36:40,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 00:36:40,994 INFO L225 Difference]: With dead ends: 32 [2022-07-22 00:36:40,994 INFO L226 Difference]: Without dead ends: 31 [2022-07-22 00:36:40,995 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-22 00:36:40,996 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 19 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 00:36:40,998 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 25 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 00:36:40,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2022-07-22 00:36:41,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 23. [2022-07-22 00:36:41,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 17 states have (on average 1.588235294117647) internal successors, (27), 22 states have internal predecessors, (27), 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) [2022-07-22 00:36:41,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2022-07-22 00:36:41,004 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 5 [2022-07-22 00:36:41,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 00:36:41,005 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2022-07-22 00:36:41,005 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 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) [2022-07-22 00:36:41,005 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2022-07-22 00:36:41,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-07-22 00:36:41,006 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 00:36:41,006 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-07-22 00:36:41,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-22 00:36:41,007 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-07-22 00:36:41,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 00:36:41,008 INFO L85 PathProgramCache]: Analyzing trace with hash 889698349, now seen corresponding path program 1 times [2022-07-22 00:36:41,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 00:36:41,009 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1494269364] [2022-07-22 00:36:41,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 00:36:41,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 00:36:41,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:36:41,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 00:36:41,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 00:36:41,043 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1494269364] [2022-07-22 00:36:41,043 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1494269364] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 00:36:41,043 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 00:36:41,043 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-22 00:36:41,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093917469] [2022-07-22 00:36:41,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 00:36:41,045 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 00:36:41,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 00:36:41,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 00:36:41,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 00:36:41,048 INFO L87 Difference]: Start difference. First operand 23 states and 27 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 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) [2022-07-22 00:36:41,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 00:36:41,059 INFO L93 Difference]: Finished difference Result 23 states and 27 transitions. [2022-07-22 00:36:41,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 00:36:41,060 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 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 [2022-07-22 00:36:41,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 00:36:41,061 INFO L225 Difference]: With dead ends: 23 [2022-07-22 00:36:41,061 INFO L226 Difference]: Without dead ends: 22 [2022-07-22 00:36:41,061 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 00:36:41,062 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 11 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 00:36:41,064 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 15 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 00:36:41,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2022-07-22 00:36:41,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2022-07-22 00:36:41,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 17 states have (on average 1.5294117647058822) internal successors, (26), 21 states have internal predecessors, (26), 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) [2022-07-22 00:36:41,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 26 transitions. [2022-07-22 00:36:41,070 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 26 transitions. Word has length 6 [2022-07-22 00:36:41,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 00:36:41,070 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 26 transitions. [2022-07-22 00:36:41,070 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 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) [2022-07-22 00:36:41,071 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 26 transitions. [2022-07-22 00:36:41,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-07-22 00:36:41,071 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 00:36:41,071 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-07-22 00:36:41,071 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-22 00:36:41,072 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-07-22 00:36:41,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 00:36:41,072 INFO L85 PathProgramCache]: Analyzing trace with hash 889692391, now seen corresponding path program 1 times [2022-07-22 00:36:41,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 00:36:41,073 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826465856] [2022-07-22 00:36:41,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 00:36:41,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 00:36:41,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:36:41,109 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 00:36:41,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 00:36:41,109 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826465856] [2022-07-22 00:36:41,109 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1826465856] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 00:36:41,109 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 00:36:41,110 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-22 00:36:41,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187820840] [2022-07-22 00:36:41,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 00:36:41,110 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 00:36:41,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 00:36:41,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 00:36:41,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 00:36:41,111 INFO L87 Difference]: Start difference. First operand 22 states and 26 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 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) [2022-07-22 00:36:41,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 00:36:41,126 INFO L93 Difference]: Finished difference Result 22 states and 26 transitions. [2022-07-22 00:36:41,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 00:36:41,127 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 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 [2022-07-22 00:36:41,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 00:36:41,127 INFO L225 Difference]: With dead ends: 22 [2022-07-22 00:36:41,128 INFO L226 Difference]: Without dead ends: 20 [2022-07-22 00:36:41,128 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 00:36:41,129 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 9 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 00:36:41,132 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 10 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 00:36:41,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2022-07-22 00:36:41,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2022-07-22 00:36:41,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 17 states have (on average 1.3529411764705883) internal successors, (23), 19 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) [2022-07-22 00:36:41,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 23 transitions. [2022-07-22 00:36:41,137 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 23 transitions. Word has length 6 [2022-07-22 00:36:41,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 00:36:41,137 INFO L495 AbstractCegarLoop]: Abstraction has 20 states and 23 transitions. [2022-07-22 00:36:41,137 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 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) [2022-07-22 00:36:41,137 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2022-07-22 00:36:41,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-07-22 00:36:41,138 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 00:36:41,138 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-07-22 00:36:41,138 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-22 00:36:41,139 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-07-22 00:36:41,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 00:36:41,139 INFO L85 PathProgramCache]: Analyzing trace with hash 1810845099, now seen corresponding path program 1 times [2022-07-22 00:36:41,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 00:36:41,140 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [415429872] [2022-07-22 00:36:41,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 00:36:41,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 00:36:41,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-22 00:36:41,157 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-22 00:36:41,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-22 00:36:41,174 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-22 00:36:41,174 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-22 00:36:41,175 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 6 remaining) [2022-07-22 00:36:41,177 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 6 remaining) [2022-07-22 00:36:41,177 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 6 remaining) [2022-07-22 00:36:41,177 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 6 remaining) [2022-07-22 00:36:41,178 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 6 remaining) [2022-07-22 00:36:41,178 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 6 remaining) [2022-07-22 00:36:41,178 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-22 00:36:41,181 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2022-07-22 00:36:41,184 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-22 00:36:41,204 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.07 12:36:41 BoogieIcfgContainer [2022-07-22 00:36:41,204 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-22 00:36:41,205 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-22 00:36:41,206 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-22 00:36:41,206 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-22 00:36:41,206 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 12:36:40" (3/4) ... [2022-07-22 00:36:41,208 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-07-22 00:36:41,241 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-07-22 00:36:41,241 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-22 00:36:41,242 INFO L158 Benchmark]: Toolchain (without parser) took 1115.14ms. Allocated memory was 69.2MB in the beginning and 109.1MB in the end (delta: 39.8MB). Free memory was 52.8MB in the beginning and 64.0MB in the end (delta: -11.2MB). Peak memory consumption was 27.6MB. Max. memory is 16.1GB. [2022-07-22 00:36:41,242 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 69.2MB. Free memory is still 51.9MB. There was no memory consumed. Max. memory is 16.1GB. [2022-07-22 00:36:41,242 INFO L158 Benchmark]: CACSL2BoogieTranslator took 167.72ms. Allocated memory is still 69.2MB. Free memory was 52.5MB in the beginning and 43.7MB in the end (delta: 8.8MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-07-22 00:36:41,243 INFO L158 Benchmark]: Boogie Procedure Inliner took 55.82ms. Allocated memory is still 69.2MB. Free memory was 43.7MB in the beginning and 54.1MB in the end (delta: -10.4MB). Peak memory consumption was 7.1MB. Max. memory is 16.1GB. [2022-07-22 00:36:41,243 INFO L158 Benchmark]: Boogie Preprocessor took 14.65ms. Allocated memory is still 69.2MB. Free memory was 54.1MB in the beginning and 53.2MB in the end (delta: 900.0kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-22 00:36:41,243 INFO L158 Benchmark]: RCFGBuilder took 206.48ms. Allocated memory is still 69.2MB. Free memory was 53.0MB in the beginning and 44.5MB in the end (delta: 8.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-07-22 00:36:41,244 INFO L158 Benchmark]: TraceAbstraction took 628.73ms. Allocated memory was 69.2MB in the beginning and 109.1MB in the end (delta: 39.8MB). Free memory was 43.9MB in the beginning and 65.6MB in the end (delta: -21.7MB). Peak memory consumption was 16.3MB. Max. memory is 16.1GB. [2022-07-22 00:36:41,244 INFO L158 Benchmark]: Witness Printer took 35.88ms. Allocated memory is still 109.1MB. Free memory was 65.6MB in the beginning and 64.0MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-22 00:36:41,245 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21ms. Allocated memory is still 69.2MB. Free memory is still 51.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 167.72ms. Allocated memory is still 69.2MB. Free memory was 52.5MB in the beginning and 43.7MB in the end (delta: 8.8MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 55.82ms. Allocated memory is still 69.2MB. Free memory was 43.7MB in the beginning and 54.1MB in the end (delta: -10.4MB). Peak memory consumption was 7.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 14.65ms. Allocated memory is still 69.2MB. Free memory was 54.1MB in the beginning and 53.2MB in the end (delta: 900.0kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 206.48ms. Allocated memory is still 69.2MB. Free memory was 53.0MB in the beginning and 44.5MB in the end (delta: 8.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 628.73ms. Allocated memory was 69.2MB in the beginning and 109.1MB in the end (delta: 39.8MB). Free memory was 43.9MB in the beginning and 65.6MB in the end (delta: -21.7MB). Peak memory consumption was 16.3MB. Max. memory is 16.1GB. * Witness Printer took 35.88ms. Allocated memory is still 109.1MB. Free memory was 65.6MB in the beginning and 64.0MB in the end (delta: 1.6MB). 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, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 22]: integer overflow possible integer overflow possible We found a FailurePath: [L12] int x = __VERIFIER_nondet_int(); [L13] int y = __VERIFIER_nondet_int(); [L14] COND TRUE x > 0 && y > 0 [L15] int old_x = x; [L16] int old_y = y; [L17] COND FALSE !(__VERIFIER_nondet_int()) [L21] EXPR old_y - 2 [L21] x = old_y - 2 VAL [old_x=2147483647, old_y=2, x=0, y=2] [L22] old_x + 1 VAL [old_x=2147483647, old_y=2, x=0, y=2] - UnprovableResult [Line: 18]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 18]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 21]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 21]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 22]: 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, 20 locations, 6 error locations. Started 1 CEGAR loops. OverallTime: 0.6s, OverallIterations: 5, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 71 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 71 mSDsluCounter, 101 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 48 mSDsCounter, 6 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 48 IncrementalHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 6 mSolverCounterUnsat, 53 mSDtfsCounter, 48 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=23occurred in iteration=2, InterpolantAutomatonStates: 16, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 19 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 29 NumberOfCodeBlocks, 29 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 18 ConstructedInterpolants, 0 QuantifiedInterpolants, 42 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 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! [2022-07-22 00:36:41,291 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... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(OVERFLOW)