./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-invgen/nest-if3.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 678e0110 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_dd3b381b-bf43-45f3-9db7-6d800158331f/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_dd3b381b-bf43-45f3-9db7-6d800158331f/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_dd3b381b-bf43-45f3-9db7-6d800158331f/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_dd3b381b-bf43-45f3-9db7-6d800158331f/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/loop-invgen/nest-if3.i -s /tmp/vcloud-vcloud-master/worker/run_dir_dd3b381b-bf43-45f3-9db7-6d800158331f/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_dd3b381b-bf43-45f3-9db7-6d800158331f/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 67bb0790f696b3c18eb630bed2fc34fee971c82b ...................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-678e011 [2019-11-20 03:32:37,327 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-20 03:32:37,330 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-20 03:32:37,341 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-20 03:32:37,342 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-20 03:32:37,343 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-20 03:32:37,346 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-20 03:32:37,347 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-20 03:32:37,349 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-20 03:32:37,349 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-20 03:32:37,350 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-20 03:32:37,351 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-20 03:32:37,352 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-20 03:32:37,353 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-20 03:32:37,354 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-20 03:32:37,355 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-20 03:32:37,355 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-20 03:32:37,356 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-20 03:32:37,358 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-20 03:32:37,361 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-20 03:32:37,362 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-20 03:32:37,363 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-20 03:32:37,365 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-20 03:32:37,365 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-20 03:32:37,369 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-20 03:32:37,369 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-20 03:32:37,369 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-20 03:32:37,370 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-20 03:32:37,371 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-20 03:32:37,372 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-20 03:32:37,372 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-20 03:32:37,373 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-20 03:32:37,373 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-20 03:32:37,374 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-20 03:32:37,375 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-20 03:32:37,375 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-20 03:32:37,376 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-20 03:32:37,376 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-20 03:32:37,376 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-20 03:32:37,377 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-20 03:32:37,378 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-20 03:32:37,378 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_dd3b381b-bf43-45f3-9db7-6d800158331f/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-20 03:32:37,391 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-20 03:32:37,391 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-20 03:32:37,392 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-20 03:32:37,392 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-20 03:32:37,392 INFO L138 SettingsManager]: * Use SBE=true [2019-11-20 03:32:37,393 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-20 03:32:37,393 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-20 03:32:37,393 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-20 03:32:37,393 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-20 03:32:37,393 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-20 03:32:37,394 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-20 03:32:37,394 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-20 03:32:37,394 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-20 03:32:37,394 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-20 03:32:37,394 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-20 03:32:37,394 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-20 03:32:37,395 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-20 03:32:37,395 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-20 03:32:37,395 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-20 03:32:37,395 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-20 03:32:37,395 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-20 03:32:37,396 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-20 03:32:37,396 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-20 03:32:37,396 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-20 03:32:37,396 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-20 03:32:37,396 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-20 03:32:37,396 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-20 03:32:37,397 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-20 03:32:37,397 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_dd3b381b-bf43-45f3-9db7-6d800158331f/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(__VERIFIER_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 -> 67bb0790f696b3c18eb630bed2fc34fee971c82b [2019-11-20 03:32:37,527 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-20 03:32:37,543 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-20 03:32:37,546 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-20 03:32:37,553 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-20 03:32:37,553 INFO L275 PluginConnector]: CDTParser initialized [2019-11-20 03:32:37,555 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_dd3b381b-bf43-45f3-9db7-6d800158331f/bin/uautomizer/../../sv-benchmarks/c/loop-invgen/nest-if3.i [2019-11-20 03:32:37,625 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_dd3b381b-bf43-45f3-9db7-6d800158331f/bin/uautomizer/data/dd0d233b6/8d241ac0f79c4f1a8e603a49897eec9f/FLAG796bd802e [2019-11-20 03:32:37,969 INFO L306 CDTParser]: Found 1 translation units. [2019-11-20 03:32:37,972 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_dd3b381b-bf43-45f3-9db7-6d800158331f/sv-benchmarks/c/loop-invgen/nest-if3.i [2019-11-20 03:32:37,977 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_dd3b381b-bf43-45f3-9db7-6d800158331f/bin/uautomizer/data/dd0d233b6/8d241ac0f79c4f1a8e603a49897eec9f/FLAG796bd802e [2019-11-20 03:32:38,401 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_dd3b381b-bf43-45f3-9db7-6d800158331f/bin/uautomizer/data/dd0d233b6/8d241ac0f79c4f1a8e603a49897eec9f [2019-11-20 03:32:38,404 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-20 03:32:38,415 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-20 03:32:38,418 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-20 03:32:38,419 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-20 03:32:38,422 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-20 03:32:38,423 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 03:32:38" (1/1) ... [2019-11-20 03:32:38,425 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@35b3a05 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 03:32:38, skipping insertion in model container [2019-11-20 03:32:38,426 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 03:32:38" (1/1) ... [2019-11-20 03:32:38,433 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-20 03:32:38,451 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-20 03:32:38,646 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 03:32:38,650 INFO L188 MainTranslator]: Completed pre-run [2019-11-20 03:32:38,741 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 03:32:38,751 INFO L192 MainTranslator]: Completed translation [2019-11-20 03:32:38,752 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 03:32:38 WrapperNode [2019-11-20 03:32:38,752 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-20 03:32:38,753 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-20 03:32:38,753 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-20 03:32:38,753 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-20 03:32:38,761 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 03:32:38" (1/1) ... [2019-11-20 03:32:38,766 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 03:32:38" (1/1) ... [2019-11-20 03:32:38,784 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-20 03:32:38,786 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-20 03:32:38,786 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-20 03:32:38,786 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-20 03:32:38,795 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 03:32:38" (1/1) ... [2019-11-20 03:32:38,795 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 03:32:38" (1/1) ... [2019-11-20 03:32:38,796 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 03:32:38" (1/1) ... [2019-11-20 03:32:38,796 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 03:32:38" (1/1) ... [2019-11-20 03:32:38,800 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 03:32:38" (1/1) ... [2019-11-20 03:32:38,810 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 03:32:38" (1/1) ... [2019-11-20 03:32:38,820 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 03:32:38" (1/1) ... [2019-11-20 03:32:38,821 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-20 03:32:38,822 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-20 03:32:38,822 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-20 03:32:38,822 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-20 03:32:38,823 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 03:32:38" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_dd3b381b-bf43-45f3-9db7-6d800158331f/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 [2019-11-20 03:32:38,890 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-20 03:32:38,891 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-20 03:32:39,128 INFO L280 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-20 03:32:39,128 INFO L285 CfgBuilder]: Removed 8 assume(true) statements. [2019-11-20 03:32:39,130 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 03:32:39 BoogieIcfgContainer [2019-11-20 03:32:39,130 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-20 03:32:39,131 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-20 03:32:39,131 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-20 03:32:39,134 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-20 03:32:39,134 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 03:32:38" (1/3) ... [2019-11-20 03:32:39,135 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@596ddc34 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 03:32:39, skipping insertion in model container [2019-11-20 03:32:39,135 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 03:32:38" (2/3) ... [2019-11-20 03:32:39,135 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@596ddc34 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 03:32:39, skipping insertion in model container [2019-11-20 03:32:39,136 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 03:32:39" (3/3) ... [2019-11-20 03:32:39,137 INFO L109 eAbstractionObserver]: Analyzing ICFG nest-if3.i [2019-11-20 03:32:39,145 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-20 03:32:39,151 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-20 03:32:39,160 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-20 03:32:39,180 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-20 03:32:39,180 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-20 03:32:39,181 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-20 03:32:39,181 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-20 03:32:39,181 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-20 03:32:39,181 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-20 03:32:39,181 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-20 03:32:39,181 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-20 03:32:39,194 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states. [2019-11-20 03:32:39,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-20 03:32:39,199 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 03:32:39,200 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 03:32:39,200 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 03:32:39,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 03:32:39,205 INFO L82 PathProgramCache]: Analyzing trace with hash 1295854517, now seen corresponding path program 1 times [2019-11-20 03:32:39,223 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 03:32:39,224 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [372008120] [2019-11-20 03:32:39,225 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 03:32:39,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 03:32:39,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 03:32:39,393 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [372008120] [2019-11-20 03:32:39,394 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-20 03:32:39,394 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-20 03:32:39,396 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930696715] [2019-11-20 03:32:39,399 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-20 03:32:39,400 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 03:32:39,412 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-20 03:32:39,413 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-20 03:32:39,415 INFO L87 Difference]: Start difference. First operand 16 states. Second operand 5 states. [2019-11-20 03:32:39,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 03:32:39,522 INFO L93 Difference]: Finished difference Result 41 states and 58 transitions. [2019-11-20 03:32:39,522 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-20 03:32:39,523 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 8 [2019-11-20 03:32:39,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 03:32:39,528 INFO L225 Difference]: With dead ends: 41 [2019-11-20 03:32:39,528 INFO L226 Difference]: Without dead ends: 0 [2019-11-20 03:32:39,531 INFO L630 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 [2019-11-20 03:32:39,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-20 03:32:39,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-20 03:32:39,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-20 03:32:39,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-20 03:32:39,552 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 8 [2019-11-20 03:32:39,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 03:32:39,552 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-20 03:32:39,552 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-20 03:32:39,552 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-20 03:32:39,553 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-20 03:32:39,557 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-20 03:32:39,593 INFO L444 ceAbstractionStarter]: For program point L15(line 15) no Hoare annotation was computed. [2019-11-20 03:32:39,593 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-11-20 03:32:39,594 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-11-20 03:32:39,594 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2019-11-20 03:32:39,594 INFO L444 ceAbstractionStarter]: For program point L16(line 16) no Hoare annotation was computed. [2019-11-20 03:32:39,594 INFO L444 ceAbstractionStarter]: For program point L4(lines 4 6) no Hoare annotation was computed. [2019-11-20 03:32:39,594 INFO L440 ceAbstractionStarter]: At program point L4-2(lines 1 24) the Hoare annotation is: (and (<= 1 ULTIMATE.start_main_~i~0) (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond)) (<= 1 ULTIMATE.start_main_~l~0)) [2019-11-20 03:32:39,595 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-20 03:32:39,595 INFO L444 ceAbstractionStarter]: For program point L21(lines 21 22) no Hoare annotation was computed. [2019-11-20 03:32:39,595 INFO L444 ceAbstractionStarter]: For program point L17-2(lines 17 23) no Hoare annotation was computed. [2019-11-20 03:32:39,595 INFO L440 ceAbstractionStarter]: At program point L17-3(lines 17 23) the Hoare annotation is: (<= 1 ULTIMATE.start_main_~l~0) [2019-11-20 03:32:39,595 INFO L444 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2019-11-20 03:32:39,595 INFO L440 ceAbstractionStarter]: At program point L18-2(lines 18 20) the Hoare annotation is: (and (<= 1 ULTIMATE.start_main_~i~0) (<= 1 ULTIMATE.start_main_~l~0)) [2019-11-20 03:32:39,595 INFO L444 ceAbstractionStarter]: For program point L18-3(lines 18 20) no Hoare annotation was computed. [2019-11-20 03:32:39,596 INFO L444 ceAbstractionStarter]: For program point L14(line 14) no Hoare annotation was computed. [2019-11-20 03:32:39,596 INFO L447 ceAbstractionStarter]: At program point L10(lines 10 24) the Hoare annotation is: true [2019-11-20 03:32:39,609 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 03:32:39 BoogieIcfgContainer [2019-11-20 03:32:39,609 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-20 03:32:39,610 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-20 03:32:39,610 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-20 03:32:39,610 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-20 03:32:39,611 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 03:32:39" (3/4) ... [2019-11-20 03:32:39,614 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-11-20 03:32:39,624 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2019-11-20 03:32:39,624 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2019-11-20 03:32:39,677 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_dd3b381b-bf43-45f3-9db7-6d800158331f/bin/uautomizer/witness.graphml [2019-11-20 03:32:39,677 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-20 03:32:39,679 INFO L168 Benchmark]: Toolchain (without parser) took 1273.97 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 145.8 MB). Free memory was 946.1 MB in the beginning and 1.1 GB in the end (delta: -138.6 MB). Peak memory consumption was 7.1 MB. Max. memory is 11.5 GB. [2019-11-20 03:32:39,680 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 1.0 GB. Free memory is still 962.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 03:32:39,680 INFO L168 Benchmark]: CACSL2BoogieTranslator took 333.83 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 145.8 MB). Free memory was 946.1 MB in the beginning and 1.1 GB in the end (delta: -194.6 MB). Peak memory consumption was 23.0 MB. Max. memory is 11.5 GB. [2019-11-20 03:32:39,681 INFO L168 Benchmark]: Boogie Procedure Inliner took 32.81 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 03:32:39,681 INFO L168 Benchmark]: Boogie Preprocessor took 35.91 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 03:32:39,682 INFO L168 Benchmark]: RCFGBuilder took 308.05 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 17.0 MB). Peak memory consumption was 17.0 MB. Max. memory is 11.5 GB. [2019-11-20 03:32:39,682 INFO L168 Benchmark]: TraceAbstraction took 478.68 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 33.6 MB). Peak memory consumption was 33.6 MB. Max. memory is 11.5 GB. [2019-11-20 03:32:39,682 INFO L168 Benchmark]: Witness Printer took 67.65 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2019-11-20 03:32:39,685 INFO L335 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 1.0 GB. Free memory is still 962.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 333.83 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 145.8 MB). Free memory was 946.1 MB in the beginning and 1.1 GB in the end (delta: -194.6 MB). Peak memory consumption was 23.0 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 32.81 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 35.91 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 308.05 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 17.0 MB). Peak memory consumption was 17.0 MB. Max. memory is 11.5 GB. * TraceAbstraction took 478.68 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 33.6 MB). Peak memory consumption was 33.6 MB. Max. memory is 11.5 GB. * Witness Printer took 67.65 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 5]: 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: 10]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 18]: Loop Invariant Derived loop invariant: 1 <= i && 1 <= l - InvariantResult [Line: 1]: Loop Invariant Derived loop invariant: (1 <= i && !(0 == cond)) && 1 <= l - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: 1 <= l - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 16 locations, 1 error locations. Result: SAFE, OverallTime: 0.4s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 22 SDtfs, 29 SDslu, 27 SDs, 0 SdLazy, 24 SolverSat, 7 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=16occurred 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, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 14 NumberOfFragments, 22 HoareAnnotationTreeSize, 4 FomulaSimplifications, 31 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 4 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 8 NumberOfCodeBlocks, 8 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 7 ConstructedInterpolants, 0 QuantifiedInterpolants, 126 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...