./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-regression/test14.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 54858612 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/test14.c -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 8aeea2893945070836fa246c32e0f0e8804eb1dc ....................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-5485861 [2020-10-25 22:05:03,205 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-25 22:05:03,210 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-25 22:05:03,249 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-25 22:05:03,250 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-25 22:05:03,251 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-25 22:05:03,253 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-25 22:05:03,256 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-25 22:05:03,258 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-25 22:05:03,259 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-25 22:05:03,260 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-25 22:05:03,262 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-25 22:05:03,262 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-25 22:05:03,264 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-25 22:05:03,265 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-25 22:05:03,266 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-25 22:05:03,267 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-25 22:05:03,269 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-25 22:05:03,271 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-25 22:05:03,273 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-25 22:05:03,275 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-25 22:05:03,279 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-25 22:05:03,281 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-25 22:05:03,282 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-25 22:05:03,285 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-25 22:05:03,286 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-25 22:05:03,286 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-25 22:05:03,287 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-25 22:05:03,288 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-25 22:05:03,289 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-25 22:05:03,290 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-25 22:05:03,291 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-25 22:05:03,292 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-25 22:05:03,293 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-25 22:05:03,294 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-25 22:05:03,295 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-25 22:05:03,296 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-25 22:05:03,296 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-25 22:05:03,296 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-25 22:05:03,297 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-25 22:05:03,298 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-25 22:05:03,299 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-25 22:05:03,343 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-25 22:05:03,343 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-25 22:05:03,346 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-25 22:05:03,346 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-25 22:05:03,346 INFO L138 SettingsManager]: * Use SBE=true [2020-10-25 22:05:03,347 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-25 22:05:03,347 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-25 22:05:03,348 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-25 22:05:03,348 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-25 22:05:03,348 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-25 22:05:03,348 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-25 22:05:03,349 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-25 22:05:03,349 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-25 22:05:03,349 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-25 22:05:03,349 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-25 22:05:03,349 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-25 22:05:03,350 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-25 22:05:03,350 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-25 22:05:03,351 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-25 22:05:03,351 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-25 22:05:03,351 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-25 22:05:03,352 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-25 22:05:03,352 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-25 22:05:03,352 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-25 22:05:03,352 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-25 22:05:03,353 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-25 22:05:03,353 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-25 22:05:03,353 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-25 22:05:03,353 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-25 22:05:03,353 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8aeea2893945070836fa246c32e0f0e8804eb1dc [2020-10-25 22:05:03,762 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-25 22:05:03,792 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-25 22:05:03,796 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-25 22:05:03,797 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-25 22:05:03,798 INFO L275 PluginConnector]: CDTParser initialized [2020-10-25 22:05:03,799 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-regression/test14.c [2020-10-25 22:05:03,903 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/948d08ccf/58e97235105d44d6a6477eaeea577838/FLAGfc7f99637 [2020-10-25 22:05:04,638 INFO L306 CDTParser]: Found 1 translation units. [2020-10-25 22:05:04,640 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-regression/test14.c [2020-10-25 22:05:04,649 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/948d08ccf/58e97235105d44d6a6477eaeea577838/FLAGfc7f99637 [2020-10-25 22:05:05,001 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/948d08ccf/58e97235105d44d6a6477eaeea577838 [2020-10-25 22:05:05,004 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-25 22:05:05,011 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-25 22:05:05,013 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-25 22:05:05,013 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-25 22:05:05,020 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-25 22:05:05,021 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 10:05:05" (1/1) ... [2020-10-25 22:05:05,026 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@23c5adc6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:05:05, skipping insertion in model container [2020-10-25 22:05:05,033 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 10:05:05" (1/1) ... [2020-10-25 22:05:05,048 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-25 22:05:05,063 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-25 22:05:05,246 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-25 22:05:05,258 INFO L203 MainTranslator]: Completed pre-run [2020-10-25 22:05:05,278 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-25 22:05:05,294 INFO L208 MainTranslator]: Completed translation [2020-10-25 22:05:05,295 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:05:05 WrapperNode [2020-10-25 22:05:05,295 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-25 22:05:05,297 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-25 22:05:05,297 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-25 22:05:05,297 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-25 22:05:05,306 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:05:05" (1/1) ... [2020-10-25 22:05:05,315 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:05:05" (1/1) ... [2020-10-25 22:05:05,337 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-25 22:05:05,338 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-25 22:05:05,338 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-25 22:05:05,338 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-25 22:05:05,345 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:05:05" (1/1) ... [2020-10-25 22:05:05,346 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:05:05" (1/1) ... [2020-10-25 22:05:05,348 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:05:05" (1/1) ... [2020-10-25 22:05:05,348 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:05:05" (1/1) ... [2020-10-25 22:05:05,353 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:05:05" (1/1) ... [2020-10-25 22:05:05,355 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:05:05" (1/1) ... [2020-10-25 22:05:05,357 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:05:05" (1/1) ... [2020-10-25 22:05:05,363 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-25 22:05:05,366 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-25 22:05:05,366 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-25 22:05:05,369 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-25 22:05:05,370 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:05:05" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-25 22:05:05,447 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-25 22:05:05,447 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-25 22:05:05,447 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-25 22:05:05,447 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-25 22:05:05,448 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-25 22:05:05,448 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-25 22:05:05,726 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-25 22:05:05,726 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-25 22:05:05,728 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 10:05:05 BoogieIcfgContainer [2020-10-25 22:05:05,729 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-25 22:05:05,730 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-25 22:05:05,731 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-25 22:05:05,734 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-25 22:05:05,735 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.10 10:05:05" (1/3) ... [2020-10-25 22:05:05,736 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d19a51 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 10:05:05, skipping insertion in model container [2020-10-25 22:05:05,736 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:05:05" (2/3) ... [2020-10-25 22:05:05,737 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d19a51 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 10:05:05, skipping insertion in model container [2020-10-25 22:05:05,737 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 10:05:05" (3/3) ... [2020-10-25 22:05:05,739 INFO L111 eAbstractionObserver]: Analyzing ICFG test14.c [2020-10-25 22:05:05,751 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-25 22:05:05,755 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-25 22:05:05,766 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-25 22:05:05,793 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-25 22:05:05,793 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-25 22:05:05,793 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-25 22:05:05,794 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-25 22:05:05,794 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-25 22:05:05,794 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-25 22:05:05,794 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-25 22:05:05,794 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-25 22:05:05,810 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states. [2020-10-25 22:05:05,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-25 22:05:05,815 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 22:05:05,816 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 22:05:05,817 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 22:05:05,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 22:05:05,824 INFO L82 PathProgramCache]: Analyzing trace with hash 119352366, now seen corresponding path program 1 times [2020-10-25 22:05:05,834 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 22:05:05,835 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1531730952] [2020-10-25 22:05:05,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 22:05:05,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 22:05:06,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 22:05:06,187 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1531730952] [2020-10-25 22:05:06,189 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-25 22:05:06,189 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-25 22:05:06,191 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365662087] [2020-10-25 22:05:06,197 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-25 22:05:06,198 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 22:05:06,220 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-25 22:05:06,221 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-25 22:05:06,224 INFO L87 Difference]: Start difference. First operand 15 states. Second operand 4 states. [2020-10-25 22:05:06,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 22:05:06,316 INFO L93 Difference]: Finished difference Result 21 states and 24 transitions. [2020-10-25 22:05:06,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-25 22:05:06,318 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-10-25 22:05:06,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 22:05:06,345 INFO L225 Difference]: With dead ends: 21 [2020-10-25 22:05:06,348 INFO L226 Difference]: Without dead ends: 11 [2020-10-25 22:05:06,355 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-25 22:05:06,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2020-10-25 22:05:06,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2020-10-25 22:05:06,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2020-10-25 22:05:06,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 12 transitions. [2020-10-25 22:05:06,396 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 12 transitions. Word has length 8 [2020-10-25 22:05:06,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 22:05:06,397 INFO L481 AbstractCegarLoop]: Abstraction has 11 states and 12 transitions. [2020-10-25 22:05:06,397 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-25 22:05:06,397 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 12 transitions. [2020-10-25 22:05:06,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-25 22:05:06,398 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 22:05:06,398 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 22:05:06,399 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-25 22:05:06,399 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 22:05:06,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 22:05:06,403 INFO L82 PathProgramCache]: Analyzing trace with hash -1264891372, now seen corresponding path program 1 times [2020-10-25 22:05:06,403 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 22:05:06,404 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1959928803] [2020-10-25 22:05:06,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 22:05:06,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 22:05:06,532 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 22:05:06,532 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1959928803] [2020-10-25 22:05:06,532 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-25 22:05:06,533 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-25 22:05:06,533 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364629488] [2020-10-25 22:05:06,534 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-25 22:05:06,535 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 22:05:06,535 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-25 22:05:06,536 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-25 22:05:06,536 INFO L87 Difference]: Start difference. First operand 11 states and 12 transitions. Second operand 5 states. [2020-10-25 22:05:06,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 22:05:06,576 INFO L93 Difference]: Finished difference Result 11 states and 12 transitions. [2020-10-25 22:05:06,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-25 22:05:06,576 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-10-25 22:05:06,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 22:05:06,577 INFO L225 Difference]: With dead ends: 11 [2020-10-25 22:05:06,577 INFO L226 Difference]: Without dead ends: 0 [2020-10-25 22:05:06,578 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-25 22:05:06,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-25 22:05:06,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-25 22:05:06,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-25 22:05:06,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-25 22:05:06,579 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 10 [2020-10-25 22:05:06,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 22:05:06,580 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-25 22:05:06,580 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-25 22:05:06,580 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-25 22:05:06,580 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-25 22:05:06,580 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-25 22:05:06,583 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-25 22:05:06,600 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-25 22:05:06,601 INFO L274 CegarLoopResult]: For program point L21(line 21) no Hoare annotation was computed. [2020-10-25 22:05:06,601 INFO L274 CegarLoopResult]: For program point L21-2(line 21) no Hoare annotation was computed. [2020-10-25 22:05:06,601 INFO L274 CegarLoopResult]: For program point L11(line 11) no Hoare annotation was computed. [2020-10-25 22:05:06,601 INFO L274 CegarLoopResult]: For program point L11-2(line 11) no Hoare annotation was computed. [2020-10-25 22:05:06,601 INFO L270 CegarLoopResult]: At program point L11-3(lines 9 12) the Hoare annotation is: (not (= ULTIMATE.start_main_~pc~0.base 0)) [2020-10-25 22:05:06,602 INFO L274 CegarLoopResult]: For program point L3(line 3) no Hoare annotation was computed. [2020-10-25 22:05:06,602 INFO L274 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-10-25 22:05:06,602 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-10-25 22:05:06,602 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-25 22:05:06,602 INFO L270 CegarLoopResult]: At program point L28(lines 14 29) the Hoare annotation is: (not (= ULTIMATE.start_main_~pc~0.base 0)) [2020-10-25 22:05:06,603 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-10-25 22:05:06,603 INFO L270 CegarLoopResult]: At program point L22(lines 14 29) the Hoare annotation is: false [2020-10-25 22:05:06,603 INFO L274 CegarLoopResult]: For program point L20(lines 20 21) no Hoare annotation was computed. [2020-10-25 22:05:06,603 INFO L274 CegarLoopResult]: For program point L20-2(lines 20 23) no Hoare annotation was computed. [2020-10-25 22:05:06,623 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.10 10:05:06 BoogieIcfgContainer [2020-10-25 22:05:06,624 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-25 22:05:06,624 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-25 22:05:06,624 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-25 22:05:06,625 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-25 22:05:06,625 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 10:05:05" (3/4) ... [2020-10-25 22:05:06,629 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-10-25 22:05:06,642 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2020-10-25 22:05:06,642 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-10-25 22:05:06,643 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-25 22:05:06,643 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-25 22:05:06,700 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-25 22:05:06,702 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-25 22:05:06,708 INFO L168 Benchmark]: Toolchain (without parser) took 1697.49 ms. Allocated memory was 41.9 MB in the beginning and 54.5 MB in the end (delta: 12.6 MB). Free memory was 19.0 MB in the beginning and 23.3 MB in the end (delta: -4.2 MB). Peak memory consumption was 8.1 MB. Max. memory is 16.1 GB. [2020-10-25 22:05:06,709 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 41.9 MB. Free memory was 21.5 MB in the beginning and 21.4 MB in the end (delta: 52.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-25 22:05:06,709 INFO L168 Benchmark]: CACSL2BoogieTranslator took 282.89 ms. Allocated memory was 41.9 MB in the beginning and 54.5 MB in the end (delta: 12.6 MB). Free memory was 18.4 MB in the beginning and 31.0 MB in the end (delta: -12.6 MB). Peak memory consumption was 3.2 MB. Max. memory is 16.1 GB. [2020-10-25 22:05:06,710 INFO L168 Benchmark]: Boogie Procedure Inliner took 40.08 ms. Allocated memory is still 54.5 MB. Free memory was 31.0 MB in the beginning and 29.5 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-25 22:05:06,710 INFO L168 Benchmark]: Boogie Preprocessor took 27.39 ms. Allocated memory is still 54.5 MB. Free memory was 29.5 MB in the beginning and 28.4 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-25 22:05:06,711 INFO L168 Benchmark]: RCFGBuilder took 362.79 ms. Allocated memory is still 54.5 MB. Free memory was 28.4 MB in the beginning and 28.1 MB in the end (delta: 345.7 kB). Peak memory consumption was 7.6 MB. Max. memory is 16.1 GB. [2020-10-25 22:05:06,712 INFO L168 Benchmark]: TraceAbstraction took 893.36 ms. Allocated memory is still 54.5 MB. Free memory was 27.6 MB in the beginning and 26.2 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 16.1 GB. [2020-10-25 22:05:06,712 INFO L168 Benchmark]: Witness Printer took 77.91 ms. Allocated memory is still 54.5 MB. Free memory was 26.2 MB in the beginning and 23.3 MB in the end (delta: 2.9 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-25 22:05:06,716 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 41.9 MB. Free memory was 21.5 MB in the beginning and 21.4 MB in the end (delta: 52.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 282.89 ms. Allocated memory was 41.9 MB in the beginning and 54.5 MB in the end (delta: 12.6 MB). Free memory was 18.4 MB in the beginning and 31.0 MB in the end (delta: -12.6 MB). Peak memory consumption was 3.2 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 40.08 ms. Allocated memory is still 54.5 MB. Free memory was 31.0 MB in the beginning and 29.5 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 27.39 ms. Allocated memory is still 54.5 MB. Free memory was 29.5 MB in the beginning and 28.4 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 362.79 ms. Allocated memory is still 54.5 MB. Free memory was 28.4 MB in the beginning and 28.1 MB in the end (delta: 345.7 kB). Peak memory consumption was 7.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 893.36 ms. Allocated memory is still 54.5 MB. Free memory was 27.6 MB in the beginning and 26.2 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 16.1 GB. * Witness Printer took 77.91 ms. Allocated memory is still 54.5 MB. Free memory was 26.2 MB in the beginning and 23.3 MB in the end (delta: 2.9 MB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 3]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: !(pc == 0) - InvariantResult [Line: 9]: Loop Invariant Derived loop invariant: !(pc == 0) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 15 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 0.7s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 20 SDtfs, 18 SDslu, 21 SDs, 0 SdLazy, 14 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=15occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 4 NumberOfFragments, 9 HoareAnnotationTreeSize, 3 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 18 NumberOfCodeBlocks, 18 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 16 ConstructedInterpolants, 0 QuantifiedInterpolants, 326 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...