./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/loop-zilu/benchmark05_conjunctive.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 20ed64ec Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/loop-zilu/benchmark05_conjunctive.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-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 ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash dc958b9ca44e6df037a80498d8cbf6f2fc13bb26 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-20ed64e [2021-08-27 11:28:47,994 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-27 11:28:47,995 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-27 11:28:48,020 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-27 11:28:48,022 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-27 11:28:48,025 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-27 11:28:48,027 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-27 11:28:48,031 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-27 11:28:48,032 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-27 11:28:48,036 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-27 11:28:48,036 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-27 11:28:48,047 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-27 11:28:48,047 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-27 11:28:48,049 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-27 11:28:48,051 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-27 11:28:48,052 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-27 11:28:48,053 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-27 11:28:48,053 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-27 11:28:48,056 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-27 11:28:48,061 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-27 11:28:48,062 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-27 11:28:48,063 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-27 11:28:48,064 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-27 11:28:48,065 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-27 11:28:48,069 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-27 11:28:48,069 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-27 11:28:48,070 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-27 11:28:48,071 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-27 11:28:48,071 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-27 11:28:48,072 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-27 11:28:48,072 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-27 11:28:48,073 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-27 11:28:48,074 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-27 11:28:48,074 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-27 11:28:48,075 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-27 11:28:48,075 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-27 11:28:48,076 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-27 11:28:48,076 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-27 11:28:48,076 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-27 11:28:48,077 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-27 11:28:48,078 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-27 11:28:48,079 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2021-08-27 11:28:48,113 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-27 11:28:48,113 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-27 11:28:48,114 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-27 11:28:48,114 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-27 11:28:48,116 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-27 11:28:48,116 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-27 11:28:48,116 INFO L138 SettingsManager]: * Use SBE=true [2021-08-27 11:28:48,116 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-27 11:28:48,116 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-27 11:28:48,116 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-08-27 11:28:48,117 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-27 11:28:48,117 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-27 11:28:48,117 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-27 11:28:48,118 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-27 11:28:48,118 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-27 11:28:48,118 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-27 11:28:48,118 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-08-27 11:28:48,118 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-27 11:28:48,118 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-27 11:28:48,118 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-27 11:28:48,119 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-27 11:28:48,119 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-27 11:28:48,119 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-27 11:28:48,119 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-27 11:28:48,119 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-27 11:28:48,119 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-27 11:28:48,120 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-27 11:28:48,120 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-27 11:28:48,120 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-27 11:28:48,120 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-27 11:28:48,120 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-27 11:28:48,120 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-27 11:28:48,121 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dc958b9ca44e6df037a80498d8cbf6f2fc13bb26 [2021-08-27 11:28:48,385 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-27 11:28:48,400 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-27 11:28:48,403 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-27 11:28:48,403 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-27 11:28:48,404 INFO L275 PluginConnector]: CDTParser initialized [2021-08-27 11:28:48,406 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loop-zilu/benchmark05_conjunctive.i [2021-08-27 11:28:48,453 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4d7dbccad/f93ce10d9a6742ce992b3e13e56696e3/FLAGec50585c3 [2021-08-27 11:28:48,755 INFO L306 CDTParser]: Found 1 translation units. [2021-08-27 11:28:48,755 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-zilu/benchmark05_conjunctive.i [2021-08-27 11:28:48,759 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4d7dbccad/f93ce10d9a6742ce992b3e13e56696e3/FLAGec50585c3 [2021-08-27 11:28:49,197 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4d7dbccad/f93ce10d9a6742ce992b3e13e56696e3 [2021-08-27 11:28:49,199 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-27 11:28:49,200 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-27 11:28:49,201 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-27 11:28:49,201 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-27 11:28:49,206 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-27 11:28:49,206 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 11:28:49" (1/1) ... [2021-08-27 11:28:49,207 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e4c0f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:28:49, skipping insertion in model container [2021-08-27 11:28:49,207 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 11:28:49" (1/1) ... [2021-08-27 11:28:49,220 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-27 11:28:49,229 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-27 11:28:49,312 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/loop-zilu/benchmark05_conjunctive.i[873,886] [2021-08-27 11:28:49,316 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 11:28:49,321 INFO L203 MainTranslator]: Completed pre-run [2021-08-27 11:28:49,328 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/loop-zilu/benchmark05_conjunctive.i[873,886] [2021-08-27 11:28:49,330 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 11:28:49,337 INFO L208 MainTranslator]: Completed translation [2021-08-27 11:28:49,337 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:28:49 WrapperNode [2021-08-27 11:28:49,338 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-27 11:28:49,338 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-27 11:28:49,338 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-27 11:28:49,338 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-27 11:28:49,342 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:28:49" (1/1) ... [2021-08-27 11:28:49,346 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:28:49" (1/1) ... [2021-08-27 11:28:49,359 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-27 11:28:49,360 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-27 11:28:49,360 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-27 11:28:49,360 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-27 11:28:49,375 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:28:49" (1/1) ... [2021-08-27 11:28:49,375 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:28:49" (1/1) ... [2021-08-27 11:28:49,376 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:28:49" (1/1) ... [2021-08-27 11:28:49,376 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:28:49" (1/1) ... [2021-08-27 11:28:49,387 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:28:49" (1/1) ... [2021-08-27 11:28:49,391 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:28:49" (1/1) ... [2021-08-27 11:28:49,391 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:28:49" (1/1) ... [2021-08-27 11:28:49,395 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-27 11:28:49,396 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-27 11:28:49,396 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-27 11:28:49,396 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-27 11:28:49,397 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:28:49" (1/1) ... [2021-08-27 11:28:49,401 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-27 11:28:49,405 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 11:28:49,415 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-08-27 11:28:49,416 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-08-27 11:28:49,441 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-27 11:28:49,441 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-27 11:28:49,442 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-27 11:28:49,442 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-27 11:28:49,582 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-27 11:28:49,582 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-08-27 11:28:49,583 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 11:28:49 BoogieIcfgContainer [2021-08-27 11:28:49,583 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-27 11:28:49,584 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-27 11:28:49,584 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-27 11:28:49,586 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-27 11:28:49,586 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.08 11:28:49" (1/3) ... [2021-08-27 11:28:49,587 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ab58b2b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 11:28:49, skipping insertion in model container [2021-08-27 11:28:49,587 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:28:49" (2/3) ... [2021-08-27 11:28:49,587 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ab58b2b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 11:28:49, skipping insertion in model container [2021-08-27 11:28:49,587 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 11:28:49" (3/3) ... [2021-08-27 11:28:49,588 INFO L111 eAbstractionObserver]: Analyzing ICFG benchmark05_conjunctive.i [2021-08-27 11:28:49,591 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-27 11:28:49,591 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2021-08-27 11:28:49,627 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-27 11:28:49,631 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-08-27 11:28:49,631 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-08-27 11:28:49,643 INFO L276 IsEmpty]: Start isEmpty. Operand has 19 states, 14 states have (on average 1.6428571428571428) internal successors, (23), 18 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 11:28:49,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-08-27 11:28:49,646 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 11:28:49,646 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-08-27 11:28:49,646 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-08-27 11:28:49,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 11:28:49,650 INFO L82 PathProgramCache]: Analyzing trace with hash 28695973, now seen corresponding path program 1 times [2021-08-27 11:28:49,655 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 11:28:49,655 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [427164257] [2021-08-27 11:28:49,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 11:28:49,656 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 11:28:49,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 11:28:49,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 11:28:49,813 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 11:28:49,813 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [427164257] [2021-08-27 11:28:49,813 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [427164257] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 11:28:49,814 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 11:28:49,814 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-27 11:28:49,815 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778668033] [2021-08-27 11:28:49,818 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-27 11:28:49,818 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 11:28:49,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-27 11:28:49,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-27 11:28:49,827 INFO L87 Difference]: Start difference. First operand has 19 states, 14 states have (on average 1.6428571428571428) internal successors, (23), 18 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 5 states, 4 states have (on average 1.25) internal successors, (5), 5 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) [2021-08-27 11:28:49,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 11:28:49,915 INFO L93 Difference]: Finished difference Result 32 states and 38 transitions. [2021-08-27 11:28:49,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-27 11:28:49,917 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.25) internal successors, (5), 5 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 [2021-08-27 11:28:49,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 11:28:49,921 INFO L225 Difference]: With dead ends: 32 [2021-08-27 11:28:49,921 INFO L226 Difference]: Without dead ends: 13 [2021-08-27 11:28:49,923 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 25.8ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-08-27 11:28:49,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2021-08-27 11:28:49,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 12. [2021-08-27 11:28:49,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 11 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 11:28:49,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 13 transitions. [2021-08-27 11:28:49,942 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 13 transitions. Word has length 5 [2021-08-27 11:28:49,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 11:28:49,942 INFO L470 AbstractCegarLoop]: Abstraction has 12 states and 13 transitions. [2021-08-27 11:28:49,942 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.25) internal successors, (5), 5 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) [2021-08-27 11:28:49,942 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 13 transitions. [2021-08-27 11:28:49,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-08-27 11:28:49,943 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 11:28:49,943 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-08-27 11:28:49,944 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-27 11:28:49,944 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-08-27 11:28:49,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 11:28:49,946 INFO L82 PathProgramCache]: Analyzing trace with hash 889575213, now seen corresponding path program 1 times [2021-08-27 11:28:49,946 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 11:28:49,947 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [447822090] [2021-08-27 11:28:49,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 11:28:49,947 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 11:28:49,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 11:28:49,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 11:28:49,988 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 11:28:49,989 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [447822090] [2021-08-27 11:28:49,989 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [447822090] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 11:28:49,989 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 11:28:49,990 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-27 11:28:49,990 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334778653] [2021-08-27 11:28:49,991 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-27 11:28:49,991 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 11:28:49,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-27 11:28:49,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-27 11:28:49,994 INFO L87 Difference]: Start difference. First operand 12 states and 13 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 11:28:50,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 11:28:50,013 INFO L93 Difference]: Finished difference Result 12 states and 13 transitions. [2021-08-27 11:28:50,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-27 11:28:50,014 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-08-27 11:28:50,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 11:28:50,014 INFO L225 Difference]: With dead ends: 12 [2021-08-27 11:28:50,014 INFO L226 Difference]: Without dead ends: 11 [2021-08-27 11:28:50,015 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 11.0ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-27 11:28:50,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2021-08-27 11:28:50,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2021-08-27 11:28:50,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 10 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 11:28:50,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 12 transitions. [2021-08-27 11:28:50,019 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 12 transitions. Word has length 6 [2021-08-27 11:28:50,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 11:28:50,020 INFO L470 AbstractCegarLoop]: Abstraction has 11 states and 12 transitions. [2021-08-27 11:28:50,020 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 11:28:50,020 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 12 transitions. [2021-08-27 11:28:50,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-08-27 11:28:50,020 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 11:28:50,021 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 11:28:50,021 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-27 11:28:50,021 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-08-27 11:28:50,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 11:28:50,022 INFO L82 PathProgramCache]: Analyzing trace with hash 183289487, now seen corresponding path program 1 times [2021-08-27 11:28:50,023 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 11:28:50,023 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [192943356] [2021-08-27 11:28:50,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 11:28:50,023 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 11:28:50,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 11:28:50,074 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 11:28:50,074 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 11:28:50,075 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [192943356] [2021-08-27 11:28:50,075 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [192943356] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 11:28:50,075 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 11:28:50,075 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-27 11:28:50,075 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202734992] [2021-08-27 11:28:50,076 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-27 11:28:50,076 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 11:28:50,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-27 11:28:50,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-27 11:28:50,078 INFO L87 Difference]: Start difference. First operand 11 states and 12 transitions. Second operand has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 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) [2021-08-27 11:28:50,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 11:28:50,141 INFO L93 Difference]: Finished difference Result 19 states and 21 transitions. [2021-08-27 11:28:50,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-27 11:28:50,142 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 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) Word has length 8 [2021-08-27 11:28:50,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 11:28:50,143 INFO L225 Difference]: With dead ends: 19 [2021-08-27 11:28:50,143 INFO L226 Difference]: Without dead ends: 18 [2021-08-27 11:28:50,143 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 29.3ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-08-27 11:28:50,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2021-08-27 11:28:50,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 16. [2021-08-27 11:28:50,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 15 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 11:28:50,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 18 transitions. [2021-08-27 11:28:50,145 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 18 transitions. Word has length 8 [2021-08-27 11:28:50,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 11:28:50,146 INFO L470 AbstractCegarLoop]: Abstraction has 16 states and 18 transitions. [2021-08-27 11:28:50,146 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 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) [2021-08-27 11:28:50,146 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2021-08-27 11:28:50,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-08-27 11:28:50,146 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 11:28:50,146 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 11:28:50,146 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-08-27 11:28:50,146 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-08-27 11:28:50,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 11:28:50,147 INFO L82 PathProgramCache]: Analyzing trace with hash 1387006858, now seen corresponding path program 1 times [2021-08-27 11:28:50,147 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 11:28:50,147 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567098499] [2021-08-27 11:28:50,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 11:28:50,147 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 11:28:50,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 11:28:50,172 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 11:28:50,172 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 11:28:50,173 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567098499] [2021-08-27 11:28:50,173 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1567098499] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 11:28:50,173 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 11:28:50,173 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-27 11:28:50,173 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571046531] [2021-08-27 11:28:50,173 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-27 11:28:50,173 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 11:28:50,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-27 11:28:50,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-27 11:28:50,174 INFO L87 Difference]: Start difference. First operand 16 states and 18 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 11:28:50,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 11:28:50,190 INFO L93 Difference]: Finished difference Result 16 states and 18 transitions. [2021-08-27 11:28:50,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-27 11:28:50,191 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-08-27 11:28:50,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 11:28:50,191 INFO L225 Difference]: With dead ends: 16 [2021-08-27 11:28:50,192 INFO L226 Difference]: Without dead ends: 15 [2021-08-27 11:28:50,192 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.8ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-27 11:28:50,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2021-08-27 11:28:50,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2021-08-27 11:28:50,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 14 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 11:28:50,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions. [2021-08-27 11:28:50,196 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 17 transitions. Word has length 9 [2021-08-27 11:28:50,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 11:28:50,196 INFO L470 AbstractCegarLoop]: Abstraction has 15 states and 17 transitions. [2021-08-27 11:28:50,196 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 11:28:50,196 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2021-08-27 11:28:50,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-08-27 11:28:50,196 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 11:28:50,197 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2021-08-27 11:28:50,197 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-08-27 11:28:50,197 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-08-27 11:28:50,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 11:28:50,199 INFO L82 PathProgramCache]: Analyzing trace with hash 742287368, now seen corresponding path program 1 times [2021-08-27 11:28:50,199 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 11:28:50,200 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [208754239] [2021-08-27 11:28:50,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 11:28:50,200 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 11:28:50,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 11:28:50,257 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 11:28:50,257 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 11:28:50,257 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [208754239] [2021-08-27 11:28:50,257 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [208754239] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 11:28:50,257 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1875357511] [2021-08-27 11:28:50,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 11:28:50,257 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 11:28:50,258 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 11:28:50,259 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-27 11:28:50,264 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-08-27 11:28:50,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 11:28:50,296 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 7 conjunts are in the unsatisfiable core [2021-08-27 11:28:50,299 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 11:28:50,410 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 11:28:50,410 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1875357511] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 11:28:50,410 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 11:28:50,410 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2021-08-27 11:28:50,410 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648784944] [2021-08-27 11:28:50,411 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-08-27 11:28:50,411 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 11:28:50,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-08-27 11:28:50,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-08-27 11:28:50,412 INFO L87 Difference]: Start difference. First operand 15 states and 17 transitions. Second operand has 10 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 10 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 11:28:50,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 11:28:50,518 INFO L93 Difference]: Finished difference Result 16 states and 18 transitions. [2021-08-27 11:28:50,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-27 11:28:50,518 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 10 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-08-27 11:28:50,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 11:28:50,519 INFO L225 Difference]: With dead ends: 16 [2021-08-27 11:28:50,519 INFO L226 Difference]: Without dead ends: 0 [2021-08-27 11:28:50,519 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 109.9ms TimeCoverageRelationStatistics Valid=56, Invalid=154, Unknown=0, NotChecked=0, Total=210 [2021-08-27 11:28:50,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-08-27 11:28:50,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-08-27 11:28:50,519 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) [2021-08-27 11:28:50,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-08-27 11:28:50,519 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 14 [2021-08-27 11:28:50,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 11:28:50,519 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-08-27 11:28:50,520 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 10 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 11:28:50,520 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-08-27 11:28:50,520 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-08-27 11:28:50,521 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-08-27 11:28:50,522 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-08-27 11:28:50,522 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-08-27 11:28:50,522 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-08-27 11:28:50,543 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-08-27 11:28:50,736 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 11:28:50,738 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-08-27 11:28:50,741 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-27 11:28:50,748 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-27 11:28:50,781 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 25) no Hoare annotation was computed. [2021-08-27 11:28:50,781 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-08-27 11:28:50,781 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 26) no Hoare annotation was computed. [2021-08-27 11:28:50,782 INFO L853 garLoopResultBuilder]: At program point L29(lines 19 30) the Hoare annotation is: (<= ULTIMATE.start_main_~n~0 2147483647) [2021-08-27 11:28:50,782 INFO L857 garLoopResultBuilder]: For program point L25(line 25) no Hoare annotation was computed. [2021-08-27 11:28:50,782 INFO L857 garLoopResultBuilder]: For program point L25-1(line 25) no Hoare annotation was computed. [2021-08-27 11:28:50,782 INFO L857 garLoopResultBuilder]: For program point L23(line 23) no Hoare annotation was computed. [2021-08-27 11:28:50,782 INFO L857 garLoopResultBuilder]: For program point L15(lines 15 17) no Hoare annotation was computed. [2021-08-27 11:28:50,782 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-08-27 11:28:50,782 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 25) no Hoare annotation was computed. [2021-08-27 11:28:50,782 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 26) no Hoare annotation was computed. [2021-08-27 11:28:50,783 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-08-27 11:28:50,783 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-08-27 11:28:50,783 INFO L857 garLoopResultBuilder]: For program point L26(line 26) no Hoare annotation was computed. [2021-08-27 11:28:50,783 INFO L857 garLoopResultBuilder]: For program point L26-1(line 26) no Hoare annotation was computed. [2021-08-27 11:28:50,783 INFO L857 garLoopResultBuilder]: For program point L26-2(line 26) no Hoare annotation was computed. [2021-08-27 11:28:50,783 INFO L853 garLoopResultBuilder]: At program point L26-4(lines 24 27) the Hoare annotation is: (let ((.cse0 (<= 0 ULTIMATE.start_main_~y~0)) (.cse1 (<= ULTIMATE.start_main_~n~0 2147483647))) (or (and .cse0 .cse1 (<= ULTIMATE.start_main_~y~0 2147483646) (<= 0 ULTIMATE.start_main_~x~0)) (and .cse0 (< ULTIMATE.start_main_~y~0 (+ ULTIMATE.start_main_~x~0 1)) .cse1))) [2021-08-27 11:28:50,783 INFO L857 garLoopResultBuilder]: For program point L24-2(lines 24 27) no Hoare annotation was computed. [2021-08-27 11:28:50,783 INFO L857 garLoopResultBuilder]: For program point L14(lines 14 18) no Hoare annotation was computed. [2021-08-27 11:28:50,786 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-27 11:28:50,794 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.08 11:28:50 BoogieIcfgContainer [2021-08-27 11:28:50,794 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-27 11:28:50,795 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-27 11:28:50,795 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-27 11:28:50,795 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-27 11:28:50,795 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 11:28:49" (3/4) ... [2021-08-27 11:28:50,797 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-08-27 11:28:50,802 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2021-08-27 11:28:50,803 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-08-27 11:28:50,803 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-08-27 11:28:50,803 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-08-27 11:28:50,822 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-27 11:28:50,823 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-27 11:28:50,824 INFO L168 Benchmark]: Toolchain (without parser) took 1623.21 ms. Allocated memory was 50.3 MB in the beginning and 75.5 MB in the end (delta: 25.2 MB). Free memory was 28.1 MB in the beginning and 52.8 MB in the end (delta: -24.7 MB). Peak memory consumption was 737.6 kB. Max. memory is 16.1 GB. [2021-08-27 11:28:50,824 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 50.3 MB. Free memory is still 31.9 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 11:28:50,824 INFO L168 Benchmark]: CACSL2BoogieTranslator took 136.84 ms. Allocated memory is still 50.3 MB. Free memory was 27.9 MB in the beginning and 30.3 MB in the end (delta: -2.4 MB). Peak memory consumption was 5.0 MB. Max. memory is 16.1 GB. [2021-08-27 11:28:50,825 INFO L168 Benchmark]: Boogie Procedure Inliner took 20.96 ms. Allocated memory was 50.3 MB in the beginning and 62.9 MB in the end (delta: 12.6 MB). Free memory was 30.3 MB in the beginning and 47.2 MB in the end (delta: -17.0 MB). Peak memory consumption was 2.2 MB. Max. memory is 16.1 GB. [2021-08-27 11:28:50,825 INFO L168 Benchmark]: Boogie Preprocessor took 35.96 ms. Allocated memory is still 62.9 MB. Free memory was 47.2 MB in the beginning and 46.2 MB in the end (delta: 998.0 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-27 11:28:50,825 INFO L168 Benchmark]: RCFGBuilder took 187.06 ms. Allocated memory is still 62.9 MB. Free memory was 46.2 MB in the beginning and 33.7 MB in the end (delta: 12.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-08-27 11:28:50,826 INFO L168 Benchmark]: TraceAbstraction took 1210.41 ms. Allocated memory was 62.9 MB in the beginning and 75.5 MB in the end (delta: 12.6 MB). Free memory was 33.2 MB in the beginning and 55.5 MB in the end (delta: -22.3 MB). Peak memory consumption was 18.6 MB. Max. memory is 16.1 GB. [2021-08-27 11:28:50,826 INFO L168 Benchmark]: Witness Printer took 27.93 ms. Allocated memory is still 75.5 MB. Free memory was 55.5 MB in the beginning and 52.8 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-27 11:28:50,827 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 50.3 MB. Free memory is still 31.9 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 136.84 ms. Allocated memory is still 50.3 MB. Free memory was 27.9 MB in the beginning and 30.3 MB in the end (delta: -2.4 MB). Peak memory consumption was 5.0 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 20.96 ms. Allocated memory was 50.3 MB in the beginning and 62.9 MB in the end (delta: 12.6 MB). Free memory was 30.3 MB in the beginning and 47.2 MB in the end (delta: -17.0 MB). Peak memory consumption was 2.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 35.96 ms. Allocated memory is still 62.9 MB. Free memory was 47.2 MB in the beginning and 46.2 MB in the end (delta: 998.0 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 187.06 ms. Allocated memory is still 62.9 MB. Free memory was 46.2 MB in the beginning and 33.7 MB in the end (delta: 12.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1210.41 ms. Allocated memory was 62.9 MB in the beginning and 75.5 MB in the end (delta: 12.6 MB). Free memory was 33.2 MB in the beginning and 55.5 MB in the end (delta: -22.3 MB). Peak memory consumption was 18.6 MB. Max. memory is 16.1 GB. * Witness Printer took 27.93 ms. Allocated memory is still 75.5 MB. Free memory was 55.5 MB in the beginning and 52.8 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 25]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 25]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 26]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 26]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 19 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 1160.3ms, OverallIterations: 5, TraceHistogramMax: 2, EmptinessCheckTime: 6.6ms, AutomataDifference: 321.5ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 43.6ms, InitialAbstractionConstructionTime: 9.0ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 36 SDtfs, 86 SDslu, 59 SDs, 0 SdLazy, 128 SolverSat, 14 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 130.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 47 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 187.0ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=19occurred in iteration=0, InterpolantAutomatonStates: 27, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 19.3ms AutomataMinimizationTime, 5 MinimizatonAttempts, 3 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 6 NumberOfFragments, 29 HoareAnnotationTreeSize, 2 FomulaSimplifications, 59 FormulaSimplificationTreeSizeReduction, 11.1ms HoareSimplificationTime, 2 FomulaSimplificationsInter, 3 FormulaSimplificationTreeSizeReductionInter, 28.2ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 16.9ms SsaConstructionTime, 87.7ms SatisfiabilityAnalysisTime, 306.2ms InterpolantComputationTime, 56 NumberOfCodeBlocks, 56 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 50 ConstructedInterpolants, 0 QuantifiedInterpolants, 140 SizeOfPredicates, 4 NumberOfNonLiveVariables, 65 ConjunctsInSsa, 7 ConjunctsInUnsatCore, 6 InterpolantComputations, 4 PerfectInterpolantSequences, 4/10 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 4 specifications checked. All of them hold - InvariantResult [Line: 24]: Loop Invariant Derived loop invariant: (((0 <= y && n <= 2147483647) && y <= 2147483646) && 0 <= x) || ((0 <= y && y < x + 1) && n <= 2147483647) - InvariantResult [Line: 19]: Loop Invariant Derived loop invariant: n <= 2147483647 RESULT: Ultimate proved your program to be correct! [2021-08-27 11:28:50,853 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...