./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-regression/test_overflow.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 20ed64ec Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-regression/test_overflow.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-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 ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 38da1da4caa7eb99f00a98b2f3d509f4ee377565 ................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-20ed64e [2021-08-26 02:11:06,542 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-26 02:11:06,544 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-26 02:11:06,578 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-26 02:11:06,578 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-26 02:11:06,581 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-26 02:11:06,582 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-26 02:11:06,585 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-26 02:11:06,587 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-26 02:11:06,590 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-26 02:11:06,591 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-26 02:11:06,597 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-26 02:11:06,597 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-26 02:11:06,599 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-26 02:11:06,600 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-26 02:11:06,602 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-26 02:11:06,603 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-26 02:11:06,603 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-26 02:11:06,605 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-26 02:11:06,609 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-26 02:11:06,609 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-26 02:11:06,610 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-26 02:11:06,611 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-26 02:11:06,612 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-26 02:11:06,616 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-26 02:11:06,617 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-26 02:11:06,617 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-26 02:11:06,618 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-26 02:11:06,618 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-26 02:11:06,619 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-26 02:11:06,619 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-26 02:11:06,619 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-26 02:11:06,620 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-26 02:11:06,621 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-26 02:11:06,621 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-26 02:11:06,621 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-26 02:11:06,622 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-26 02:11:06,622 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-26 02:11:06,622 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-26 02:11:06,623 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-26 02:11:06,624 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-26 02:11:06,627 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-08-26 02:11:06,655 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-26 02:11:06,655 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-26 02:11:06,656 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-26 02:11:06,656 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-26 02:11:06,657 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-26 02:11:06,657 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-26 02:11:06,657 INFO L138 SettingsManager]: * Use SBE=true [2021-08-26 02:11:06,657 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-26 02:11:06,657 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-26 02:11:06,658 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-26 02:11:06,658 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-26 02:11:06,658 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-26 02:11:06,658 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-26 02:11:06,658 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-26 02:11:06,658 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-26 02:11:06,659 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-26 02:11:06,659 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-26 02:11:06,659 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-26 02:11:06,659 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-26 02:11:06,659 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-26 02:11:06,659 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-26 02:11:06,659 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-26 02:11:06,659 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-26 02:11:06,659 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-26 02:11:06,659 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-26 02:11:06,659 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-26 02:11:06,660 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-26 02:11:06,660 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-26 02:11:06,660 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-26 02:11:06,660 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-26 02:11:06,660 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 38da1da4caa7eb99f00a98b2f3d509f4ee377565 [2021-08-26 02:11:06,920 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-26 02:11:06,941 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-26 02:11:06,943 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-26 02:11:06,944 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-26 02:11:06,945 INFO L275 PluginConnector]: CDTParser initialized [2021-08-26 02:11:06,946 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-regression/test_overflow.i [2021-08-26 02:11:07,000 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d510d2578/0da2688830a84a88a4d6253c64cecc84/FLAG4b7c0a6c3 [2021-08-26 02:11:07,393 INFO L306 CDTParser]: Found 1 translation units. [2021-08-26 02:11:07,393 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-regression/test_overflow.i [2021-08-26 02:11:07,405 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d510d2578/0da2688830a84a88a4d6253c64cecc84/FLAG4b7c0a6c3 [2021-08-26 02:11:07,758 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d510d2578/0da2688830a84a88a4d6253c64cecc84 [2021-08-26 02:11:07,759 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-26 02:11:07,760 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-26 02:11:07,762 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-26 02:11:07,762 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-26 02:11:07,765 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-26 02:11:07,766 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 02:11:07" (1/1) ... [2021-08-26 02:11:07,767 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3fcf9ff8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 02:11:07, skipping insertion in model container [2021-08-26 02:11:07,769 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 02:11:07" (1/1) ... [2021-08-26 02:11:07,773 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-26 02:11:07,803 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-26 02:11:08,134 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-regression/test_overflow.i[33387,33400] [2021-08-26 02:11:08,142 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-26 02:11:08,148 INFO L203 MainTranslator]: Completed pre-run [2021-08-26 02:11:08,178 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-regression/test_overflow.i[33387,33400] [2021-08-26 02:11:08,180 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-26 02:11:08,215 INFO L208 MainTranslator]: Completed translation [2021-08-26 02:11:08,216 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 02:11:08 WrapperNode [2021-08-26 02:11:08,217 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-26 02:11:08,218 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-26 02:11:08,218 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-26 02:11:08,218 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-26 02:11:08,223 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 02:11:08" (1/1) ... [2021-08-26 02:11:08,248 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 02:11:08" (1/1) ... [2021-08-26 02:11:08,270 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-26 02:11:08,270 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-26 02:11:08,271 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-26 02:11:08,271 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-26 02:11:08,276 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 02:11:08" (1/1) ... [2021-08-26 02:11:08,276 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 02:11:08" (1/1) ... [2021-08-26 02:11:08,280 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 02:11:08" (1/1) ... [2021-08-26 02:11:08,280 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 02:11:08" (1/1) ... [2021-08-26 02:11:08,291 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 02:11:08" (1/1) ... [2021-08-26 02:11:08,292 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 02:11:08" (1/1) ... [2021-08-26 02:11:08,293 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 02:11:08" (1/1) ... [2021-08-26 02:11:08,301 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-26 02:11:08,302 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-26 02:11:08,302 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-26 02:11:08,302 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-26 02:11:08,303 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 02:11:08" (1/1) ... [2021-08-26 02:11:08,307 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-26 02:11:08,324 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 02:11:08,336 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-08-26 02:11:08,342 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-08-26 02:11:08,375 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-26 02:11:08,375 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-26 02:11:08,376 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-26 02:11:08,376 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-26 02:11:08,622 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-26 02:11:08,623 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-08-26 02:11:08,624 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 02:11:08 BoogieIcfgContainer [2021-08-26 02:11:08,624 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-26 02:11:08,626 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-26 02:11:08,626 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-26 02:11:08,628 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-26 02:11:08,628 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.08 02:11:07" (1/3) ... [2021-08-26 02:11:08,629 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64285484 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 02:11:08, skipping insertion in model container [2021-08-26 02:11:08,629 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 02:11:08" (2/3) ... [2021-08-26 02:11:08,629 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64285484 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 02:11:08, skipping insertion in model container [2021-08-26 02:11:08,629 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 02:11:08" (3/3) ... [2021-08-26 02:11:08,630 INFO L111 eAbstractionObserver]: Analyzing ICFG test_overflow.i [2021-08-26 02:11:08,634 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-26 02:11:08,634 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-08-26 02:11:08,670 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-26 02:11:08,677 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-08-26 02:11:08,677 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-08-26 02:11:08,690 INFO L276 IsEmpty]: Start isEmpty. Operand has 10 states, 8 states have (on average 1.25) internal successors, (10), 9 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 02:11:08,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-08-26 02:11:08,701 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 02:11:08,701 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-08-26 02:11:08,702 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-26 02:11:08,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 02:11:08,706 INFO L82 PathProgramCache]: Analyzing trace with hash 28692867, now seen corresponding path program 1 times [2021-08-26 02:11:08,711 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 02:11:08,712 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2044893116] [2021-08-26 02:11:08,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 02:11:08,713 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 02:11:08,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 02:11:08,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 02:11:08,864 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 02:11:08,864 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2044893116] [2021-08-26 02:11:08,865 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2044893116] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 02:11:08,865 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 02:11:08,865 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-26 02:11:08,866 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491044930] [2021-08-26 02:11:08,877 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-26 02:11:08,877 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 02:11:08,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-26 02:11:08,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-26 02:11:08,886 INFO L87 Difference]: Start difference. First operand has 10 states, 8 states have (on average 1.25) internal successors, (10), 9 states have internal predecessors, (10), 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, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 02:11:08,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 02:11:08,904 INFO L93 Difference]: Finished difference Result 14 states and 13 transitions. [2021-08-26 02:11:08,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-26 02:11:08,906 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-08-26 02:11:08,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 02:11:08,909 INFO L225 Difference]: With dead ends: 14 [2021-08-26 02:11:08,909 INFO L226 Difference]: Without dead ends: 0 [2021-08-26 02:11:08,911 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.7ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-26 02:11:08,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-08-26 02:11:08,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-08-26 02:11:08,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 02:11:08,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-08-26 02:11:08,925 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 5 [2021-08-26 02:11:08,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 02:11:08,925 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-08-26 02:11:08,926 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 02:11:08,926 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-08-26 02:11:08,926 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-08-26 02:11:08,927 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 02:11:08,928 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-26 02:11:08,929 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-08-26 02:11:08,932 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 02:11:08,934 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 02:11:08,945 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-08-26 02:11:08,946 INFO L853 garLoopResultBuilder]: At program point L768(lines 764 769) the Hoare annotation is: (= ~globalSize~0 4) [2021-08-26 02:11:08,946 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-08-26 02:11:08,946 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-08-26 02:11:08,946 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-08-26 02:11:08,947 INFO L853 garLoopResultBuilder]: At program point L762(lines 756 763) the Hoare annotation is: (= ~globalSize~0 4) [2021-08-26 02:11:08,947 INFO L857 garLoopResultBuilder]: For program point L760(line 760) no Hoare annotation was computed. [2021-08-26 02:11:08,948 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 752) no Hoare annotation was computed. [2021-08-26 02:11:08,948 INFO L857 garLoopResultBuilder]: For program point L752(line 752) no Hoare annotation was computed. [2021-08-26 02:11:08,949 INFO L857 garLoopResultBuilder]: For program point L750(lines 1 769) no Hoare annotation was computed. [2021-08-26 02:11:08,952 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-26 02:11:08,962 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.08 02:11:08 BoogieIcfgContainer [2021-08-26 02:11:08,962 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-26 02:11:08,969 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-26 02:11:08,969 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-26 02:11:08,969 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-26 02:11:08,970 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 02:11:08" (3/4) ... [2021-08-26 02:11:08,972 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-08-26 02:11:08,979 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2021-08-26 02:11:08,980 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2021-08-26 02:11:08,980 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-08-26 02:11:08,980 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-08-26 02:11:09,017 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-26 02:11:09,018 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-26 02:11:09,019 INFO L168 Benchmark]: Toolchain (without parser) took 1258.19 ms. Allocated memory was 54.5 MB in the beginning and 67.1 MB in the end (delta: 12.6 MB). Free memory was 30.4 MB in the beginning and 46.9 MB in the end (delta: -16.5 MB). Peak memory consumption was 17.9 MB. Max. memory is 16.1 GB. [2021-08-26 02:11:09,019 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 54.5 MB. Free memory was 36.8 MB in the beginning and 36.8 MB in the end (delta: 71.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-26 02:11:09,020 INFO L168 Benchmark]: CACSL2BoogieTranslator took 455.56 ms. Allocated memory was 54.5 MB in the beginning and 67.1 MB in the end (delta: 12.6 MB). Free memory was 30.2 MB in the beginning and 38.2 MB in the end (delta: -8.0 MB). Peak memory consumption was 7.7 MB. Max. memory is 16.1 GB. [2021-08-26 02:11:09,020 INFO L168 Benchmark]: Boogie Procedure Inliner took 52.05 ms. Allocated memory is still 67.1 MB. Free memory was 37.9 MB in the beginning and 36.1 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-26 02:11:09,021 INFO L168 Benchmark]: Boogie Preprocessor took 30.71 ms. Allocated memory is still 67.1 MB. Free memory was 36.1 MB in the beginning and 35.0 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-26 02:11:09,021 INFO L168 Benchmark]: RCFGBuilder took 322.74 ms. Allocated memory is still 67.1 MB. Free memory was 34.8 MB in the beginning and 36.0 MB in the end (delta: -1.1 MB). Peak memory consumption was 5.6 MB. Max. memory is 16.1 GB. [2021-08-26 02:11:09,021 INFO L168 Benchmark]: TraceAbstraction took 337.03 ms. Allocated memory is still 67.1 MB. Free memory was 35.4 MB in the beginning and 31.0 MB in the end (delta: 4.4 MB). Peak memory consumption was 5.6 MB. Max. memory is 16.1 GB. [2021-08-26 02:11:09,022 INFO L168 Benchmark]: Witness Printer took 49.28 ms. Allocated memory is still 67.1 MB. Free memory was 31.0 MB in the beginning and 46.9 MB in the end (delta: -15.9 MB). Peak memory consumption was 4.6 MB. Max. memory is 16.1 GB. [2021-08-26 02:11:09,026 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 54.5 MB. Free memory was 36.8 MB in the beginning and 36.8 MB in the end (delta: 71.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 455.56 ms. Allocated memory was 54.5 MB in the beginning and 67.1 MB in the end (delta: 12.6 MB). Free memory was 30.2 MB in the beginning and 38.2 MB in the end (delta: -8.0 MB). Peak memory consumption was 7.7 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 52.05 ms. Allocated memory is still 67.1 MB. Free memory was 37.9 MB in the beginning and 36.1 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 30.71 ms. Allocated memory is still 67.1 MB. Free memory was 36.1 MB in the beginning and 35.0 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 322.74 ms. Allocated memory is still 67.1 MB. Free memory was 34.8 MB in the beginning and 36.0 MB in the end (delta: -1.1 MB). Peak memory consumption was 5.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 337.03 ms. Allocated memory is still 67.1 MB. Free memory was 35.4 MB in the beginning and 31.0 MB in the end (delta: 4.4 MB). Peak memory consumption was 5.6 MB. Max. memory is 16.1 GB. * Witness Printer took 49.28 ms. Allocated memory is still 67.1 MB. Free memory was 31.0 MB in the beginning and 46.9 MB in the end (delta: -15.9 MB). Peak memory consumption was 4.6 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 752]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 10 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 282.9ms, OverallIterations: 1, TraceHistogramMax: 1, EmptinessCheckTime: 14.8ms, AutomataDifference: 33.2ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 16.3ms, InitialAbstractionConstructionTime: 8.9ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 6 SDtfs, 4 SDslu, 0 SDs, 0 SdLazy, 2 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 7.5ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.7ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=10occurred in iteration=0, InterpolantAutomatonStates: 3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 5.7ms AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 3 NumberOfFragments, 6 HoareAnnotationTreeSize, 2 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 4.2ms HoareSimplificationTime, 2 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 6.6ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 7.4ms SsaConstructionTime, 28.8ms SatisfiabilityAnalysisTime, 66.0ms InterpolantComputationTime, 5 NumberOfCodeBlocks, 5 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 4 ConstructedInterpolants, 0 QuantifiedInterpolants, 8 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 756]: Loop Invariant Derived loop invariant: globalSize == 4 - InvariantResult [Line: 764]: Loop Invariant Derived loop invariant: globalSize == 4 RESULT: Ultimate proved your program to be correct! [2021-08-26 02:11:09,057 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...