./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/signedintegeroverflow-regression/PrefixDecrement.i --full-output -ea --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 03d7b7b3 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -ea -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/signedintegeroverflow-regression/PrefixDecrement.i -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 8bdb977ff214625ad8e508f43c66811f5e3cd7c697d49c33523a8c57afa53f24 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-03d7b7b [2022-02-21 03:02:09,301 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-21 03:02:09,304 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-21 03:02:09,336 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-02-21 03:02:09,336 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-02-21 03:02:09,339 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-02-21 03:02:09,340 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-02-21 03:02:09,342 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-02-21 03:02:09,344 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-02-21 03:02:09,347 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-02-21 03:02:09,347 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-02-21 03:02:09,348 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-02-21 03:02:09,349 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-02-21 03:02:09,350 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-02-21 03:02:09,351 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-02-21 03:02:09,354 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-02-21 03:02:09,354 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-02-21 03:02:09,355 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-02-21 03:02:09,356 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-02-21 03:02:09,360 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-02-21 03:02:09,361 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-02-21 03:02:09,363 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-02-21 03:02:09,364 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-02-21 03:02:09,365 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-02-21 03:02:09,367 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-02-21 03:02:09,367 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-02-21 03:02:09,367 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-02-21 03:02:09,369 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-02-21 03:02:09,369 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-02-21 03:02:09,369 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-02-21 03:02:09,370 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-02-21 03:02:09,370 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-02-21 03:02:09,371 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-02-21 03:02:09,371 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-02-21 03:02:09,372 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-02-21 03:02:09,372 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-02-21 03:02:09,372 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-02-21 03:02:09,372 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-02-21 03:02:09,373 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-02-21 03:02:09,373 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-02-21 03:02:09,374 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-02-21 03:02:09,374 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Default.epf [2022-02-21 03:02:09,387 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-21 03:02:09,387 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-21 03:02:09,387 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-02-21 03:02:09,387 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-02-21 03:02:09,388 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-02-21 03:02:09,388 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-02-21 03:02:09,389 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-02-21 03:02:09,389 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-02-21 03:02:09,389 INFO L138 SettingsManager]: * Use SBE=true [2022-02-21 03:02:09,389 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-21 03:02:09,389 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-02-21 03:02:09,389 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-02-21 03:02:09,389 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-21 03:02:09,390 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-02-21 03:02:09,390 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-02-21 03:02:09,390 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-02-21 03:02:09,390 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-02-21 03:02:09,390 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-21 03:02:09,390 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-21 03:02:09,390 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-02-21 03:02:09,391 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-21 03:02:09,391 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-21 03:02:09,391 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-02-21 03:02:09,391 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-21 03:02:09,391 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-21 03:02:09,391 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-02-21 03:02:09,391 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-02-21 03:02:09,392 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-02-21 03:02:09,392 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-02-21 03:02:09,392 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-02-21 03:02:09,392 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8bdb977ff214625ad8e508f43c66811f5e3cd7c697d49c33523a8c57afa53f24 [2022-02-21 03:02:09,563 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-21 03:02:09,584 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-21 03:02:09,587 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-21 03:02:09,589 INFO L271 PluginConnector]: Initializing CDTParser... [2022-02-21 03:02:09,589 INFO L275 PluginConnector]: CDTParser initialized [2022-02-21 03:02:09,590 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/signedintegeroverflow-regression/PrefixDecrement.i [2022-02-21 03:02:09,654 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fae68309f/7eeaa4d08c214b1c829665025123b7c9/FLAG5461fe348 [2022-02-21 03:02:10,221 INFO L306 CDTParser]: Found 1 translation units. [2022-02-21 03:02:10,222 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/signedintegeroverflow-regression/PrefixDecrement.i [2022-02-21 03:02:10,240 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fae68309f/7eeaa4d08c214b1c829665025123b7c9/FLAG5461fe348 [2022-02-21 03:02:10,585 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fae68309f/7eeaa4d08c214b1c829665025123b7c9 [2022-02-21 03:02:10,587 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-21 03:02:10,589 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-02-21 03:02:10,592 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-02-21 03:02:10,592 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-02-21 03:02:10,594 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-02-21 03:02:10,595 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 03:02:10" (1/1) ... [2022-02-21 03:02:10,597 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@653b6de2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:02:10, skipping insertion in model container [2022-02-21 03:02:10,597 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 03:02:10" (1/1) ... [2022-02-21 03:02:10,605 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-02-21 03:02:10,637 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-02-21 03:02:10,905 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-21 03:02:10,922 INFO L203 MainTranslator]: Completed pre-run [2022-02-21 03:02:10,965 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-21 03:02:10,996 INFO L208 MainTranslator]: Completed translation [2022-02-21 03:02:10,997 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:02:10 WrapperNode [2022-02-21 03:02:10,997 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-02-21 03:02:10,998 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-02-21 03:02:10,998 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-02-21 03:02:10,998 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-02-21 03:02:11,002 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:02:10" (1/1) ... [2022-02-21 03:02:11,009 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:02:10" (1/1) ... [2022-02-21 03:02:11,019 INFO L137 Inliner]: procedures = 109, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 19 [2022-02-21 03:02:11,020 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-02-21 03:02:11,020 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-21 03:02:11,020 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-21 03:02:11,020 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-21 03:02:11,025 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:02:10" (1/1) ... [2022-02-21 03:02:11,026 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:02:10" (1/1) ... [2022-02-21 03:02:11,027 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:02:10" (1/1) ... [2022-02-21 03:02:11,027 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:02:10" (1/1) ... [2022-02-21 03:02:11,029 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:02:10" (1/1) ... [2022-02-21 03:02:11,030 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:02:10" (1/1) ... [2022-02-21 03:02:11,030 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:02:10" (1/1) ... [2022-02-21 03:02:11,031 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-21 03:02:11,032 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-21 03:02:11,032 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-21 03:02:11,032 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-21 03:02:11,033 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:02:10" (1/1) ... [2022-02-21 03:02:11,043 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-21 03:02:11,050 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-21 03:02:11,075 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) [2022-02-21 03:02:11,096 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 [2022-02-21 03:02:11,136 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-02-21 03:02:11,137 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-02-21 03:02:11,137 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-21 03:02:11,138 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-21 03:02:11,264 INFO L234 CfgBuilder]: Building ICFG [2022-02-21 03:02:11,265 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-21 03:02:11,411 INFO L275 CfgBuilder]: Performing block encoding [2022-02-21 03:02:11,415 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-21 03:02:11,415 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-02-21 03:02:11,416 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 03:02:11 BoogieIcfgContainer [2022-02-21 03:02:11,416 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-21 03:02:11,417 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-02-21 03:02:11,427 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-02-21 03:02:11,435 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-02-21 03:02:11,435 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.02 03:02:10" (1/3) ... [2022-02-21 03:02:11,436 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56ea81a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 03:02:11, skipping insertion in model container [2022-02-21 03:02:11,436 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:02:10" (2/3) ... [2022-02-21 03:02:11,436 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56ea81a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 03:02:11, skipping insertion in model container [2022-02-21 03:02:11,436 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 03:02:11" (3/3) ... [2022-02-21 03:02:11,437 INFO L111 eAbstractionObserver]: Analyzing ICFG PrefixDecrement.i [2022-02-21 03:02:11,440 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-02-21 03:02:11,451 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-02-21 03:02:11,548 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-21 03:02:11,553 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, 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, mLoopAccelerationTechnique=FAST_UPR [2022-02-21 03:02:11,565 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-02-21 03:02:11,593 INFO L276 IsEmpty]: Start isEmpty. Operand has 9 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 8 states have internal predecessors, (8), 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) [2022-02-21 03:02:11,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-02-21 03:02:11,612 INFO L506 BasicCegarLoop]: Found error trace [2022-02-21 03:02:11,613 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1] [2022-02-21 03:02:11,623 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-02-21 03:02:11,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-21 03:02:11,632 INFO L85 PathProgramCache]: Analyzing trace with hash 29856, now seen corresponding path program 1 times [2022-02-21 03:02:11,639 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-21 03:02:11,660 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [143350724] [2022-02-21 03:02:11,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-21 03:02:11,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-21 03:02:11,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-21 03:02:11,923 INFO L290 TraceCheckUtils]: 0: Hoare triple {12#true} assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(4, 1);call write~init~int(37, 1, 0, 1);call write~init~int(100, 1, 1, 1);call write~init~int(10, 1, 2, 1);call write~init~int(0, 1, 3, 1); {12#true} is VALID [2022-02-21 03:02:11,936 INFO L290 TraceCheckUtils]: 1: Hoare triple {12#true} assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~pre28#1, main_#t~nondet29#1, main_~x~0#1;main_~x~0#1 := -2147483648; {14#(<= (+ |ULTIMATE.start_main_~x~0#1| 2147483648) 0)} is VALID [2022-02-21 03:02:11,938 INFO L290 TraceCheckUtils]: 2: Hoare triple {14#(<= (+ |ULTIMATE.start_main_~x~0#1| 2147483648) 0)} assume !(main_~x~0#1 - 1 <= 2147483647); {13#false} is VALID [2022-02-21 03:02:11,940 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-21 03:02:11,940 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-21 03:02:11,941 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [143350724] [2022-02-21 03:02:11,942 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [143350724] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-21 03:02:11,942 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-21 03:02:11,942 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-02-21 03:02:11,944 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599610225] [2022-02-21 03:02:11,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-21 03:02:11,963 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2022-02-21 03:02:11,965 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-02-21 03:02:11,967 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-21 03:02:11,977 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 3 edges. 3 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-02-21 03:02:11,978 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-02-21 03:02:11,978 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-21 03:02:12,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-02-21 03:02:12,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-02-21 03:02:12,016 INFO L87 Difference]: Start difference. First operand has 9 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 8 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-21 03:02:12,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-21 03:02:12,075 INFO L93 Difference]: Finished difference Result 9 states and 8 transitions. [2022-02-21 03:02:12,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-02-21 03:02:12,076 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2022-02-21 03:02:12,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-21 03:02:12,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-21 03:02:12,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 8 transitions. [2022-02-21 03:02:12,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-21 03:02:12,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 8 transitions. [2022-02-21 03:02:12,084 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 3 states and 8 transitions. [2022-02-21 03:02:12,105 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 8 edges. 8 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-02-21 03:02:12,128 INFO L225 Difference]: With dead ends: 9 [2022-02-21 03:02:12,129 INFO L226 Difference]: Without dead ends: 5 [2022-02-21 03:02:12,132 INFO L932 BasicCegarLoop]: 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 [2022-02-21 03:02:12,139 INFO L933 BasicCegarLoop]: 2 mSDtfsCounter, 2 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-21 03:02:12,140 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 3 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-21 03:02:12,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5 states. [2022-02-21 03:02:12,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5 to 5. [2022-02-21 03:02:12,181 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-02-21 03:02:12,182 INFO L82 GeneralOperation]: Start isEquivalent. First operand 5 states. Second operand has 5 states, 4 states have (on average 1.0) internal successors, (4), 4 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) [2022-02-21 03:02:12,182 INFO L74 IsIncluded]: Start isIncluded. First operand 5 states. Second operand has 5 states, 4 states have (on average 1.0) internal successors, (4), 4 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) [2022-02-21 03:02:12,183 INFO L87 Difference]: Start difference. First operand 5 states. Second operand has 5 states, 4 states have (on average 1.0) internal successors, (4), 4 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) [2022-02-21 03:02:12,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-21 03:02:12,185 INFO L93 Difference]: Finished difference Result 5 states and 4 transitions. [2022-02-21 03:02:12,185 INFO L276 IsEmpty]: Start isEmpty. Operand 5 states and 4 transitions. [2022-02-21 03:02:12,185 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-02-21 03:02:12,185 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-02-21 03:02:12,186 INFO L74 IsIncluded]: Start isIncluded. First operand has 5 states, 4 states have (on average 1.0) internal successors, (4), 4 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) Second operand 5 states. [2022-02-21 03:02:12,186 INFO L87 Difference]: Start difference. First operand has 5 states, 4 states have (on average 1.0) internal successors, (4), 4 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) Second operand 5 states. [2022-02-21 03:02:12,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-21 03:02:12,188 INFO L93 Difference]: Finished difference Result 5 states and 4 transitions. [2022-02-21 03:02:12,188 INFO L276 IsEmpty]: Start isEmpty. Operand 5 states and 4 transitions. [2022-02-21 03:02:12,188 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-02-21 03:02:12,188 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-02-21 03:02:12,188 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-02-21 03:02:12,195 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-02-21 03:02:12,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 4 states have (on average 1.0) internal successors, (4), 4 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) [2022-02-21 03:02:12,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 4 transitions. [2022-02-21 03:02:12,198 INFO L78 Accepts]: Start accepts. Automaton has 5 states and 4 transitions. Word has length 3 [2022-02-21 03:02:12,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-21 03:02:12,198 INFO L470 AbstractCegarLoop]: Abstraction has 5 states and 4 transitions. [2022-02-21 03:02:12,198 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-21 03:02:12,199 INFO L276 IsEmpty]: Start isEmpty. Operand 5 states and 4 transitions. [2022-02-21 03:02:12,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-02-21 03:02:12,199 INFO L506 BasicCegarLoop]: Found error trace [2022-02-21 03:02:12,200 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2022-02-21 03:02:12,200 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-02-21 03:02:12,200 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-02-21 03:02:12,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-21 03:02:12,202 INFO L85 PathProgramCache]: Analyzing trace with hash 925572, now seen corresponding path program 1 times [2022-02-21 03:02:12,202 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-21 03:02:12,212 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593771231] [2022-02-21 03:02:12,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-21 03:02:12,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-21 03:02:12,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-21 03:02:12,248 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-02-21 03:02:12,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-21 03:02:12,285 INFO L138 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-02-21 03:02:12,285 INFO L628 BasicCegarLoop]: Counterexample is feasible [2022-02-21 03:02:12,288 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2022-02-21 03:02:12,290 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2022-02-21 03:02:12,291 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-02-21 03:02:12,295 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2022-02-21 03:02:12,314 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-02-21 03:02:12,330 WARN L170 areAnnotationChecker]: ULTIMATE.startENTRY has no Hoare annotation [2022-02-21 03:02:12,332 WARN L170 areAnnotationChecker]: L-1 has no Hoare annotation [2022-02-21 03:02:12,332 WARN L170 areAnnotationChecker]: L333 has no Hoare annotation [2022-02-21 03:02:12,332 WARN L170 areAnnotationChecker]: L333 has no Hoare annotation [2022-02-21 03:02:12,332 WARN L170 areAnnotationChecker]: L333-1 has no Hoare annotation [2022-02-21 03:02:12,332 WARN L170 areAnnotationChecker]: L333-1 has no Hoare annotation [2022-02-21 03:02:12,333 WARN L170 areAnnotationChecker]: L335 has no Hoare annotation [2022-02-21 03:02:12,333 WARN L170 areAnnotationChecker]: ULTIMATE.startFINAL has no Hoare annotation [2022-02-21 03:02:12,333 INFO L163 areAnnotationChecker]: CFG has 0 edges. 0 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. 0 times interpolants missing. [2022-02-21 03:02:12,334 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.02 03:02:12 BoogieIcfgContainer [2022-02-21 03:02:12,339 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-02-21 03:02:12,351 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-02-21 03:02:12,352 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-02-21 03:02:12,352 INFO L275 PluginConnector]: Witness Printer initialized [2022-02-21 03:02:12,352 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 03:02:11" (3/4) ... [2022-02-21 03:02:12,354 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-02-21 03:02:12,399 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-02-21 03:02:12,399 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-02-21 03:02:12,401 INFO L158 Benchmark]: Toolchain (without parser) took 1811.28ms. Allocated memory is still 113.2MB. Free memory was 76.6MB in the beginning and 83.7MB in the end (delta: -7.1MB). There was no memory consumed. Max. memory is 16.1GB. [2022-02-21 03:02:12,401 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 113.2MB. Free memory is still 93.5MB. There was no memory consumed. Max. memory is 16.1GB. [2022-02-21 03:02:12,401 INFO L158 Benchmark]: CACSL2BoogieTranslator took 405.50ms. Allocated memory is still 113.2MB. Free memory was 76.4MB in the beginning and 82.8MB in the end (delta: -6.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-02-21 03:02:12,401 INFO L158 Benchmark]: Boogie Procedure Inliner took 22.19ms. Allocated memory is still 113.2MB. Free memory was 82.8MB in the beginning and 81.2MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-02-21 03:02:12,402 INFO L158 Benchmark]: Boogie Preprocessor took 11.22ms. Allocated memory is still 113.2MB. Free memory was 81.2MB in the beginning and 80.4MB in the end (delta: 736.7kB). There was no memory consumed. Max. memory is 16.1GB. [2022-02-21 03:02:12,402 INFO L158 Benchmark]: RCFGBuilder took 384.43ms. Allocated memory is still 113.2MB. Free memory was 80.4MB in the beginning and 71.1MB in the end (delta: 9.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-02-21 03:02:12,402 INFO L158 Benchmark]: TraceAbstraction took 933.58ms. Allocated memory is still 113.2MB. Free memory was 70.7MB in the beginning and 85.8MB in the end (delta: -15.1MB). There was no memory consumed. Max. memory is 16.1GB. [2022-02-21 03:02:12,412 INFO L158 Benchmark]: Witness Printer took 48.06ms. Allocated memory is still 113.2MB. Free memory was 85.0MB in the beginning and 83.7MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-02-21 03:02:12,417 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - AssertionsEnabledResult: Assertions are enabled Assertions are enabled - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 113.2MB. Free memory is still 93.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 405.50ms. Allocated memory is still 113.2MB. Free memory was 76.4MB in the beginning and 82.8MB in the end (delta: -6.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 22.19ms. Allocated memory is still 113.2MB. Free memory was 82.8MB in the beginning and 81.2MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 11.22ms. Allocated memory is still 113.2MB. Free memory was 81.2MB in the beginning and 80.4MB in the end (delta: 736.7kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 384.43ms. Allocated memory is still 113.2MB. Free memory was 80.4MB in the beginning and 71.1MB in the end (delta: 9.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 933.58ms. Allocated memory is still 113.2MB. Free memory was 70.7MB in the beginning and 85.8MB in the end (delta: -15.1MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 48.06ms. Allocated memory is still 113.2MB. Free memory was 85.0MB in the beginning and 83.7MB in the end (delta: 1.4MB). 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: 333]: integer overflow possible integer overflow possible We found a FailurePath: [L332] int x = -2147483647 - 1; VAL [x=-2147483648] [L333] --x VAL [x=-2147483648] - UnprovableResult [Line: 333]: 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, 9 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.8s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2 mSDsluCounter, 3 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1 mSDsCounter, 1 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2 IncrementalHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1 mSolverCounterUnsat, 2 mSDtfsCounter, 2 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=9occurred in iteration=0, InterpolantAutomatonStates: 3, 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, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 7 NumberOfCodeBlocks, 7 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 2 ConstructedInterpolants, 0 QuantifiedInterpolants, 6 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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! [2022-02-21 03:02:12,459 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)