./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loops/trex01-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_28b64a9b-ffe7-4210-a1ac-1e3928d32c73/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_28b64a9b-ffe7-4210-a1ac-1e3928d32c73/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_28b64a9b-ffe7-4210-a1ac-1e3928d32c73/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_28b64a9b-ffe7-4210-a1ac-1e3928d32c73/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/loops/trex01-2.i -s /tmp/vcloud-vcloud-master/worker/run_dir_28b64a9b-ffe7-4210-a1ac-1e3928d32c73/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_28b64a9b-ffe7-4210-a1ac-1e3928d32c73/bin/uautomizer --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 447515879dde6ddadac2168313caab8f63c0c815 ....................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-30 00:40:04,294 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 00:40:04,297 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 00:40:04,398 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 00:40:04,399 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 00:40:04,404 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 00:40:04,409 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 00:40:04,414 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 00:40:04,418 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 00:40:04,427 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 00:40:04,428 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 00:40:04,431 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 00:40:04,431 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 00:40:04,436 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 00:40:04,437 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 00:40:04,440 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 00:40:04,441 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 00:40:04,443 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 00:40:04,449 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 00:40:04,459 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 00:40:04,462 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 00:40:04,463 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 00:40:04,466 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 00:40:04,467 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 00:40:04,474 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 00:40:04,474 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 00:40:04,475 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 00:40:04,476 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 00:40:04,476 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 00:40:04,478 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 00:40:04,478 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 00:40:04,479 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 00:40:04,480 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 00:40:04,481 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 00:40:04,482 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 00:40:04,482 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 00:40:04,483 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 00:40:04,483 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 00:40:04,483 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 00:40:04,484 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 00:40:04,485 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 00:40:04,486 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_28b64a9b-ffe7-4210-a1ac-1e3928d32c73/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-30 00:40:04,514 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 00:40:04,514 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 00:40:04,515 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-30 00:40:04,516 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-30 00:40:04,516 INFO L138 SettingsManager]: * Use SBE=true [2020-11-30 00:40:04,516 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 00:40:04,516 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-30 00:40:04,517 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-30 00:40:04,517 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-30 00:40:04,517 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 00:40:04,517 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-30 00:40:04,517 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-30 00:40:04,518 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-30 00:40:04,518 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-30 00:40:04,518 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-30 00:40:04,518 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 00:40:04,519 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-30 00:40:04,519 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 00:40:04,519 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-30 00:40:04,519 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-30 00:40:04,519 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-30 00:40:04,520 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 00:40:04,520 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 00:40:04,520 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-30 00:40:04,520 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-30 00:40:04,521 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-30 00:40:04,521 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-30 00:40:04,521 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-30 00:40:04,521 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 00:40:04,522 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:/tmp/vcloud-vcloud-master/worker/run_dir_28b64a9b-ffe7-4210-a1ac-1e3928d32c73/bin/uautomizer/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_28b64a9b-ffe7-4210-a1ac-1e3928d32c73/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 447515879dde6ddadac2168313caab8f63c0c815 [2020-11-30 00:40:04,877 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 00:40:04,902 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 00:40:04,905 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 00:40:04,907 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 00:40:04,908 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 00:40:04,909 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_28b64a9b-ffe7-4210-a1ac-1e3928d32c73/bin/uautomizer/../../sv-benchmarks/c/loops/trex01-2.i [2020-11-30 00:40:05,006 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_28b64a9b-ffe7-4210-a1ac-1e3928d32c73/bin/uautomizer/data/692408a68/2d38c59c1b4c455ab3a4201cf1707c58/FLAG0344318f1 [2020-11-30 00:40:05,540 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 00:40:05,541 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_28b64a9b-ffe7-4210-a1ac-1e3928d32c73/sv-benchmarks/c/loops/trex01-2.i [2020-11-30 00:40:05,553 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_28b64a9b-ffe7-4210-a1ac-1e3928d32c73/bin/uautomizer/data/692408a68/2d38c59c1b4c455ab3a4201cf1707c58/FLAG0344318f1 [2020-11-30 00:40:05,905 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_28b64a9b-ffe7-4210-a1ac-1e3928d32c73/bin/uautomizer/data/692408a68/2d38c59c1b4c455ab3a4201cf1707c58 [2020-11-30 00:40:05,908 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 00:40:05,910 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-30 00:40:05,912 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 00:40:05,912 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 00:40:05,916 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 00:40:05,917 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 12:40:05" (1/1) ... [2020-11-30 00:40:05,919 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26ab983f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:40:05, skipping insertion in model container [2020-11-30 00:40:05,919 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 12:40:05" (1/1) ... [2020-11-30 00:40:05,928 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 00:40:05,946 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 00:40:06,181 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 00:40:06,196 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 00:40:06,234 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 00:40:06,257 INFO L208 MainTranslator]: Completed translation [2020-11-30 00:40:06,259 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:40:06 WrapperNode [2020-11-30 00:40:06,260 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 00:40:06,262 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-30 00:40:06,262 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-30 00:40:06,263 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-30 00:40:06,272 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:40:06" (1/1) ... [2020-11-30 00:40:06,284 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:40:06" (1/1) ... [2020-11-30 00:40:06,326 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-30 00:40:06,327 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 00:40:06,329 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 00:40:06,329 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 00:40:06,339 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:40:06" (1/1) ... [2020-11-30 00:40:06,339 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:40:06" (1/1) ... [2020-11-30 00:40:06,357 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:40:06" (1/1) ... [2020-11-30 00:40:06,357 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:40:06" (1/1) ... [2020-11-30 00:40:06,362 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:40:06" (1/1) ... [2020-11-30 00:40:06,367 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:40:06" (1/1) ... [2020-11-30 00:40:06,378 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:40:06" (1/1) ... [2020-11-30 00:40:06,380 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 00:40:06,381 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 00:40:06,381 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 00:40:06,381 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 00:40:06,392 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:40:06" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_28b64a9b-ffe7-4210-a1ac-1e3928d32c73/bin/uautomizer/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 [2020-11-30 00:40:06,462 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-30 00:40:06,462 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-30 00:40:06,463 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 00:40:06,463 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 00:40:06,911 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 00:40:06,912 INFO L298 CfgBuilder]: Removed 20 assume(true) statements. [2020-11-30 00:40:06,914 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:40:06 BoogieIcfgContainer [2020-11-30 00:40:06,914 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 00:40:06,917 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-30 00:40:06,920 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-30 00:40:06,925 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-30 00:40:06,926 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 12:40:05" (1/3) ... [2020-11-30 00:40:06,927 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@586136dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 12:40:06, skipping insertion in model container [2020-11-30 00:40:06,928 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:40:06" (2/3) ... [2020-11-30 00:40:06,928 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@586136dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 12:40:06, skipping insertion in model container [2020-11-30 00:40:06,929 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:40:06" (3/3) ... [2020-11-30 00:40:06,931 INFO L111 eAbstractionObserver]: Analyzing ICFG trex01-2.i [2020-11-30 00:40:06,944 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-30 00:40:06,952 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-11-30 00:40:06,969 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-11-30 00:40:07,023 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-30 00:40:07,028 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-30 00:40:07,029 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-30 00:40:07,034 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-30 00:40:07,034 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-30 00:40:07,034 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-30 00:40:07,034 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-30 00:40:07,034 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-30 00:40:07,051 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states. [2020-11-30 00:40:07,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-30 00:40:07,058 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:40:07,059 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:40:07,060 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:40:07,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:40:07,069 INFO L82 PathProgramCache]: Analyzing trace with hash -1538483378, now seen corresponding path program 1 times [2020-11-30 00:40:07,078 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:40:07,079 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024223141] [2020-11-30 00:40:07,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:40:07,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:40:07,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:40:07,278 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2024223141] [2020-11-30 00:40:07,279 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:40:07,280 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-30 00:40:07,281 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267011908] [2020-11-30 00:40:07,286 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-30 00:40:07,287 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:40:07,302 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-30 00:40:07,303 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-30 00:40:07,305 INFO L87 Difference]: Start difference. First operand 37 states. Second operand 2 states. [2020-11-30 00:40:07,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:40:07,336 INFO L93 Difference]: Finished difference Result 65 states and 102 transitions. [2020-11-30 00:40:07,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-30 00:40:07,338 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-11-30 00:40:07,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:40:07,352 INFO L225 Difference]: With dead ends: 65 [2020-11-30 00:40:07,353 INFO L226 Difference]: Without dead ends: 19 [2020-11-30 00:40:07,356 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-30 00:40:07,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2020-11-30 00:40:07,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2020-11-30 00:40:07,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-11-30 00:40:07,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2020-11-30 00:40:07,401 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 10 [2020-11-30 00:40:07,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:40:07,401 INFO L481 AbstractCegarLoop]: Abstraction has 19 states and 20 transitions. [2020-11-30 00:40:07,401 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-30 00:40:07,402 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 20 transitions. [2020-11-30 00:40:07,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-30 00:40:07,403 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:40:07,403 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:40:07,403 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-30 00:40:07,403 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:40:07,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:40:07,415 INFO L82 PathProgramCache]: Analyzing trace with hash -1652999982, now seen corresponding path program 1 times [2020-11-30 00:40:07,415 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:40:07,416 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546285571] [2020-11-30 00:40:07,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:40:07,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:40:07,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:40:07,544 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1546285571] [2020-11-30 00:40:07,545 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:40:07,545 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-30 00:40:07,545 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031432372] [2020-11-30 00:40:07,547 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-30 00:40:07,547 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:40:07,548 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-30 00:40:07,549 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-30 00:40:07,549 INFO L87 Difference]: Start difference. First operand 19 states and 20 transitions. Second operand 4 states. [2020-11-30 00:40:07,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:40:07,633 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions. [2020-11-30 00:40:07,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-30 00:40:07,634 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-11-30 00:40:07,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:40:07,634 INFO L225 Difference]: With dead ends: 19 [2020-11-30 00:40:07,635 INFO L226 Difference]: Without dead ends: 0 [2020-11-30 00:40:07,636 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-30 00:40:07,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-30 00:40:07,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-30 00:40:07,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-30 00:40:07,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-30 00:40:07,637 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 10 [2020-11-30 00:40:07,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:40:07,637 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-30 00:40:07,637 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-30 00:40:07,638 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-30 00:40:07,638 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-30 00:40:07,638 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-30 00:40:07,640 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-30 00:40:07,680 INFO L274 CegarLoopResult]: For program point L35-2(line 35) no Hoare annotation was computed. [2020-11-30 00:40:07,681 INFO L274 CegarLoopResult]: For program point L27(lines 27 29) no Hoare annotation was computed. [2020-11-30 00:40:07,681 INFO L274 CegarLoopResult]: For program point L27-1(lines 27 29) no Hoare annotation was computed. [2020-11-30 00:40:07,681 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2020-11-30 00:40:07,681 INFO L274 CegarLoopResult]: For program point L19(line 19) no Hoare annotation was computed. [2020-11-30 00:40:07,681 INFO L274 CegarLoopResult]: For program point L19-1(line 19) no Hoare annotation was computed. [2020-11-30 00:40:07,681 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-30 00:40:07,682 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-11-30 00:40:07,682 INFO L274 CegarLoopResult]: For program point L12(line 12) no Hoare annotation was computed. [2020-11-30 00:40:07,682 INFO L274 CegarLoopResult]: For program point L12-2(line 12) no Hoare annotation was computed. [2020-11-30 00:40:07,682 INFO L274 CegarLoopResult]: For program point L12-3(line 12) no Hoare annotation was computed. [2020-11-30 00:40:07,682 INFO L274 CegarLoopResult]: For program point L12-4(line 12) no Hoare annotation was computed. [2020-11-30 00:40:07,682 INFO L274 CegarLoopResult]: For program point L12-6(line 12) no Hoare annotation was computed. [2020-11-30 00:40:07,683 INFO L274 CegarLoopResult]: For program point L12-7(line 12) no Hoare annotation was computed. [2020-11-30 00:40:07,683 INFO L274 CegarLoopResult]: For program point L38(lines 38 45) no Hoare annotation was computed. [2020-11-30 00:40:07,683 INFO L277 CegarLoopResult]: At program point L38-2(lines 36 46) the Hoare annotation is: true [2020-11-30 00:40:07,683 INFO L274 CegarLoopResult]: For program point L38-3(lines 38 45) no Hoare annotation was computed. [2020-11-30 00:40:07,683 INFO L277 CegarLoopResult]: At program point L38-5(lines 36 46) the Hoare annotation is: true [2020-11-30 00:40:07,684 INFO L270 CegarLoopResult]: At program point L30-2(line 30) the Hoare annotation is: (<= 1 ULTIMATE.start_f_~z~0) [2020-11-30 00:40:07,684 INFO L274 CegarLoopResult]: For program point L30-3(line 30) no Hoare annotation was computed. [2020-11-30 00:40:07,684 INFO L270 CegarLoopResult]: At program point L30-6(line 30) the Hoare annotation is: (<= 1 ULTIMATE.start_f_~z~0) [2020-11-30 00:40:07,684 INFO L274 CegarLoopResult]: For program point L30-7(line 30) no Hoare annotation was computed. [2020-11-30 00:40:07,685 INFO L277 CegarLoopResult]: At program point L55(lines 48 56) the Hoare annotation is: true [2020-11-30 00:40:07,685 INFO L274 CegarLoopResult]: For program point L39(lines 39 40) no Hoare annotation was computed. [2020-11-30 00:40:07,685 INFO L274 CegarLoopResult]: For program point L39-1(lines 39 40) no Hoare annotation was computed. [2020-11-30 00:40:07,685 INFO L274 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-11-30 00:40:07,685 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2020-11-30 00:40:07,685 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-30 00:40:07,686 INFO L277 CegarLoopResult]: At program point L25-1(lines 25 47) the Hoare annotation is: true [2020-11-30 00:40:07,686 INFO L274 CegarLoopResult]: For program point L50(lines 50 54) no Hoare annotation was computed. [2020-11-30 00:40:07,686 INFO L274 CegarLoopResult]: For program point L34(line 34) no Hoare annotation was computed. [2020-11-30 00:40:07,686 INFO L274 CegarLoopResult]: For program point L34-2(line 34) no Hoare annotation was computed. [2020-11-30 00:40:07,686 INFO L274 CegarLoopResult]: For program point L18(lines 18 20) no Hoare annotation was computed. [2020-11-30 00:40:07,687 INFO L277 CegarLoopResult]: At program point L18-2(line 33) the Hoare annotation is: true [2020-11-30 00:40:07,687 INFO L274 CegarLoopResult]: For program point L18-3(lines 18 20) no Hoare annotation was computed. [2020-11-30 00:40:07,687 INFO L277 CegarLoopResult]: At program point L18-5(line 33) the Hoare annotation is: true [2020-11-30 00:40:07,687 INFO L274 CegarLoopResult]: For program point L35(line 35) no Hoare annotation was computed. [2020-11-30 00:40:07,711 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.11 12:40:07 BoogieIcfgContainer [2020-11-30 00:40:07,711 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-30 00:40:07,712 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 00:40:07,712 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 00:40:07,712 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 00:40:07,713 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:40:06" (3/4) ... [2020-11-30 00:40:07,717 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-30 00:40:07,731 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2020-11-30 00:40:07,731 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-11-30 00:40:07,732 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-30 00:40:07,732 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-30 00:40:07,805 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_28b64a9b-ffe7-4210-a1ac-1e3928d32c73/bin/uautomizer/witness.graphml [2020-11-30 00:40:07,809 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 00:40:07,812 INFO L168 Benchmark]: Toolchain (without parser) took 1900.86 ms. Allocated memory is still 104.9 MB. Free memory was 75.1 MB in the beginning and 66.9 MB in the end (delta: 8.2 MB). Peak memory consumption was 7.6 MB. Max. memory is 16.1 GB. [2020-11-30 00:40:07,814 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 86.0 MB. Free memory is still 45.9 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:40:07,815 INFO L168 Benchmark]: CACSL2BoogieTranslator took 348.72 ms. Allocated memory is still 104.9 MB. Free memory was 74.8 MB in the beginning and 82.2 MB in the end (delta: -7.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-30 00:40:07,815 INFO L168 Benchmark]: Boogie Procedure Inliner took 64.51 ms. Allocated memory is still 104.9 MB. Free memory was 82.2 MB in the beginning and 80.7 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 00:40:07,817 INFO L168 Benchmark]: Boogie Preprocessor took 53.00 ms. Allocated memory is still 104.9 MB. Free memory was 80.7 MB in the beginning and 79.5 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:40:07,818 INFO L168 Benchmark]: RCFGBuilder took 534.44 ms. Allocated memory is still 104.9 MB. Free memory was 79.5 MB in the beginning and 62.3 MB in the end (delta: 17.2 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. [2020-11-30 00:40:07,818 INFO L168 Benchmark]: TraceAbstraction took 793.70 ms. Allocated memory is still 104.9 MB. Free memory was 61.8 MB in the beginning and 70.5 MB in the end (delta: -8.7 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:40:07,819 INFO L168 Benchmark]: Witness Printer took 97.76 ms. Allocated memory is still 104.9 MB. Free memory was 70.5 MB in the beginning and 66.9 MB in the end (delta: 3.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 00:40:07,823 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 86.0 MB. Free memory is still 45.9 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 348.72 ms. Allocated memory is still 104.9 MB. Free memory was 74.8 MB in the beginning and 82.2 MB in the end (delta: -7.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 64.51 ms. Allocated memory is still 104.9 MB. Free memory was 82.2 MB in the beginning and 80.7 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 53.00 ms. Allocated memory is still 104.9 MB. Free memory was 80.7 MB in the beginning and 79.5 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 534.44 ms. Allocated memory is still 104.9 MB. Free memory was 79.5 MB in the beginning and 62.3 MB in the end (delta: 17.2 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 793.70 ms. Allocated memory is still 104.9 MB. Free memory was 61.8 MB in the beginning and 70.5 MB in the end (delta: -8.7 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 97.76 ms. Allocated memory is still 104.9 MB. Free memory was 70.5 MB in the beginning and 66.9 MB in the end (delta: 3.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 12]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 12]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - InvariantResult [Line: 33]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 36]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 30]: Loop Invariant Derived loop invariant: 1 <= z - InvariantResult [Line: 48]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 33]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 25]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 30]: Loop Invariant Derived loop invariant: 1 <= z - InvariantResult [Line: 36]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 37 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 0.6s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 55 SDtfs, 4 SDslu, 8 SDs, 0 SdLazy, 10 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=37occurred 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, 8 LocationsWithAnnotation, 8 PreInvPairs, 14 NumberOfFragments, 12 HoareAnnotationTreeSize, 8 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 20 NumberOfCodeBlocks, 20 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 18 ConstructedInterpolants, 0 QuantifiedInterpolants, 243 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...