./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-invgen/MADWiFi-encode_ie_ok.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_57dac93d-0595-49ee-8b49-04ce08fcd1e0/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_57dac93d-0595-49ee-8b49-04ce08fcd1e0/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_57dac93d-0595-49ee-8b49-04ce08fcd1e0/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_57dac93d-0595-49ee-8b49-04ce08fcd1e0/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/loop-invgen/MADWiFi-encode_ie_ok.i -s /tmp/vcloud-vcloud-master/worker/run_dir_57dac93d-0595-49ee-8b49-04ce08fcd1e0/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_57dac93d-0595-49ee-8b49-04ce08fcd1e0/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 77e92a11a4549a6f714898b45c2d349723607a29 ................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-678e011 [2019-11-19 22:36:13,361 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-19 22:36:13,363 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-19 22:36:13,376 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-19 22:36:13,376 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-19 22:36:13,378 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-19 22:36:13,379 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-19 22:36:13,388 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-19 22:36:13,392 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-19 22:36:13,396 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-19 22:36:13,397 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-19 22:36:13,398 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-19 22:36:13,398 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-19 22:36:13,400 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-19 22:36:13,401 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-19 22:36:13,402 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-19 22:36:13,403 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-19 22:36:13,404 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-19 22:36:13,406 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-19 22:36:13,410 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-19 22:36:13,413 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-19 22:36:13,415 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-19 22:36:13,418 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-19 22:36:13,418 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-19 22:36:13,422 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-19 22:36:13,422 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-19 22:36:13,423 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-19 22:36:13,424 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-19 22:36:13,424 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-19 22:36:13,425 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-19 22:36:13,425 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-19 22:36:13,426 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-19 22:36:13,427 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-19 22:36:13,427 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-19 22:36:13,428 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-19 22:36:13,428 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-19 22:36:13,429 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-19 22:36:13,429 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-19 22:36:13,429 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-19 22:36:13,430 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-19 22:36:13,431 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-19 22:36:13,432 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_57dac93d-0595-49ee-8b49-04ce08fcd1e0/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-19 22:36:13,456 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-19 22:36:13,457 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-19 22:36:13,467 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-19 22:36:13,467 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-19 22:36:13,467 INFO L138 SettingsManager]: * Use SBE=true [2019-11-19 22:36:13,468 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-19 22:36:13,468 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-19 22:36:13,468 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-19 22:36:13,468 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-19 22:36:13,468 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-19 22:36:13,468 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-19 22:36:13,469 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-19 22:36:13,469 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-19 22:36:13,469 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-19 22:36:13,469 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-19 22:36:13,469 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-19 22:36:13,469 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-19 22:36:13,470 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-19 22:36:13,470 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-19 22:36:13,470 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-19 22:36:13,470 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-19 22:36:13,470 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-19 22:36:13,471 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-19 22:36:13,471 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-19 22:36:13,471 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-19 22:36:13,471 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-19 22:36:13,471 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-19 22:36:13,471 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-19 22:36:13,472 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_57dac93d-0595-49ee-8b49-04ce08fcd1e0/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 -> 77e92a11a4549a6f714898b45c2d349723607a29 [2019-11-19 22:36:13,648 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-19 22:36:13,665 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-19 22:36:13,667 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-19 22:36:13,669 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-19 22:36:13,669 INFO L275 PluginConnector]: CDTParser initialized [2019-11-19 22:36:13,670 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_57dac93d-0595-49ee-8b49-04ce08fcd1e0/bin/uautomizer/../../sv-benchmarks/c/loop-invgen/MADWiFi-encode_ie_ok.i [2019-11-19 22:36:13,730 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_57dac93d-0595-49ee-8b49-04ce08fcd1e0/bin/uautomizer/data/d5157e5e1/72f50958f58a490da0a46ced3338173e/FLAGe7c491b1f [2019-11-19 22:36:14,086 INFO L306 CDTParser]: Found 1 translation units. [2019-11-19 22:36:14,087 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_57dac93d-0595-49ee-8b49-04ce08fcd1e0/sv-benchmarks/c/loop-invgen/MADWiFi-encode_ie_ok.i [2019-11-19 22:36:14,091 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_57dac93d-0595-49ee-8b49-04ce08fcd1e0/bin/uautomizer/data/d5157e5e1/72f50958f58a490da0a46ced3338173e/FLAGe7c491b1f [2019-11-19 22:36:14,103 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_57dac93d-0595-49ee-8b49-04ce08fcd1e0/bin/uautomizer/data/d5157e5e1/72f50958f58a490da0a46ced3338173e [2019-11-19 22:36:14,105 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-19 22:36:14,106 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-19 22:36:14,107 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-19 22:36:14,107 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-19 22:36:14,110 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-19 22:36:14,111 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 10:36:14" (1/1) ... [2019-11-19 22:36:14,113 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5f3d127e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:36:14, skipping insertion in model container [2019-11-19 22:36:14,114 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 10:36:14" (1/1) ... [2019-11-19 22:36:14,120 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-19 22:36:14,135 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-19 22:36:14,279 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-19 22:36:14,283 INFO L188 MainTranslator]: Completed pre-run [2019-11-19 22:36:14,399 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-19 22:36:14,412 INFO L192 MainTranslator]: Completed translation [2019-11-19 22:36:14,413 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:36:14 WrapperNode [2019-11-19 22:36:14,413 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-19 22:36:14,414 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-19 22:36:14,414 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-19 22:36:14,414 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-19 22:36:14,423 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:36:14" (1/1) ... [2019-11-19 22:36:14,429 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:36:14" (1/1) ... [2019-11-19 22:36:14,451 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-19 22:36:14,452 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-19 22:36:14,453 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-19 22:36:14,453 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-19 22:36:14,461 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:36:14" (1/1) ... [2019-11-19 22:36:14,462 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:36:14" (1/1) ... [2019-11-19 22:36:14,463 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:36:14" (1/1) ... [2019-11-19 22:36:14,463 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:36:14" (1/1) ... [2019-11-19 22:36:14,474 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:36:14" (1/1) ... [2019-11-19 22:36:14,479 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:36:14" (1/1) ... [2019-11-19 22:36:14,480 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:36:14" (1/1) ... [2019-11-19 22:36:14,481 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-19 22:36:14,482 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-19 22:36:14,482 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-19 22:36:14,482 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-19 22:36:14,483 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:36:14" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_57dac93d-0595-49ee-8b49-04ce08fcd1e0/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 [2019-11-19 22:36:14,530 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-19 22:36:14,531 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-19 22:36:14,886 INFO L280 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-19 22:36:14,886 INFO L285 CfgBuilder]: Removed 9 assume(true) statements. [2019-11-19 22:36:14,887 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 10:36:14 BoogieIcfgContainer [2019-11-19 22:36:14,887 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-19 22:36:14,888 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-19 22:36:14,888 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-19 22:36:14,891 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-19 22:36:14,891 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 10:36:14" (1/3) ... [2019-11-19 22:36:14,892 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70c5cd3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 10:36:14, skipping insertion in model container [2019-11-19 22:36:14,892 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:36:14" (2/3) ... [2019-11-19 22:36:14,895 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70c5cd3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 10:36:14, skipping insertion in model container [2019-11-19 22:36:14,895 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 10:36:14" (3/3) ... [2019-11-19 22:36:14,896 INFO L109 eAbstractionObserver]: Analyzing ICFG MADWiFi-encode_ie_ok.i [2019-11-19 22:36:14,905 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-19 22:36:14,910 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2019-11-19 22:36:14,917 INFO L249 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2019-11-19 22:36:14,936 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-19 22:36:14,936 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-19 22:36:14,936 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-19 22:36:14,936 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-19 22:36:14,937 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-19 22:36:14,937 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-19 22:36:14,937 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-19 22:36:14,937 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-19 22:36:14,949 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states. [2019-11-19 22:36:14,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-11-19 22:36:14,954 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 22:36:14,955 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-19 22:36:14,955 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-19 22:36:14,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 22:36:14,966 INFO L82 PathProgramCache]: Analyzing trace with hash 1314021635, now seen corresponding path program 1 times [2019-11-19 22:36:14,973 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 22:36:14,973 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1783142926] [2019-11-19 22:36:14,973 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 22:36:15,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:36:15,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 22:36:15,145 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1783142926] [2019-11-19 22:36:15,146 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-19 22:36:15,146 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-19 22:36:15,147 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922335564] [2019-11-19 22:36:15,151 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-19 22:36:15,151 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-19 22:36:15,160 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-19 22:36:15,161 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-19 22:36:15,162 INFO L87 Difference]: Start difference. First operand 22 states. Second operand 5 states. [2019-11-19 22:36:15,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 22:36:15,266 INFO L93 Difference]: Finished difference Result 43 states and 56 transitions. [2019-11-19 22:36:15,267 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-19 22:36:15,268 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2019-11-19 22:36:15,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 22:36:15,276 INFO L225 Difference]: With dead ends: 43 [2019-11-19 22:36:15,277 INFO L226 Difference]: Without dead ends: 18 [2019-11-19 22:36:15,280 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 [2019-11-19 22:36:15,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2019-11-19 22:36:15,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 17. [2019-11-19 22:36:15,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2019-11-19 22:36:15,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2019-11-19 22:36:15,305 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 12 [2019-11-19 22:36:15,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 22:36:15,305 INFO L462 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2019-11-19 22:36:15,306 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-19 22:36:15,306 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2019-11-19 22:36:15,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-11-19 22:36:15,306 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 22:36:15,306 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-19 22:36:15,307 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-19 22:36:15,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 22:36:15,307 INFO L82 PathProgramCache]: Analyzing trace with hash 54563046, now seen corresponding path program 1 times [2019-11-19 22:36:15,307 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 22:36:15,308 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [513404088] [2019-11-19 22:36:15,308 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 22:36:15,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:36:15,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 22:36:15,380 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [513404088] [2019-11-19 22:36:15,380 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-19 22:36:15,380 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-19 22:36:15,380 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337983851] [2019-11-19 22:36:15,382 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-19 22:36:15,382 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-19 22:36:15,382 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-19 22:36:15,382 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-19 22:36:15,383 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand 5 states. [2019-11-19 22:36:15,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 22:36:15,447 INFO L93 Difference]: Finished difference Result 24 states and 24 transitions. [2019-11-19 22:36:15,447 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-19 22:36:15,447 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2019-11-19 22:36:15,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 22:36:15,448 INFO L225 Difference]: With dead ends: 24 [2019-11-19 22:36:15,448 INFO L226 Difference]: Without dead ends: 22 [2019-11-19 22:36:15,449 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 [2019-11-19 22:36:15,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2019-11-19 22:36:15,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 21. [2019-11-19 22:36:15,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2019-11-19 22:36:15,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 21 transitions. [2019-11-19 22:36:15,455 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 21 transitions. Word has length 14 [2019-11-19 22:36:15,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 22:36:15,455 INFO L462 AbstractCegarLoop]: Abstraction has 21 states and 21 transitions. [2019-11-19 22:36:15,455 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-19 22:36:15,455 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 21 transitions. [2019-11-19 22:36:15,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-11-19 22:36:15,456 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 22:36:15,456 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-19 22:36:15,456 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-19 22:36:15,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 22:36:15,457 INFO L82 PathProgramCache]: Analyzing trace with hash 1692557492, now seen corresponding path program 1 times [2019-11-19 22:36:15,457 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 22:36:15,457 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [344028699] [2019-11-19 22:36:15,457 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 22:36:15,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:36:15,599 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-19 22:36:15,599 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [344028699] [2019-11-19 22:36:15,600 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1098402818] [2019-11-19 22:36:15,600 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_57dac93d-0595-49ee-8b49-04ce08fcd1e0/bin/uautomizer/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-19 22:36:15,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:36:15,662 INFO L255 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 14 conjunts are in the unsatisfiable core [2019-11-19 22:36:15,667 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 22:36:15,771 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-19 22:36:15,793 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 22:36:15,793 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-19 22:36:15,793 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 11 [2019-11-19 22:36:15,794 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246957299] [2019-11-19 22:36:15,794 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-11-19 22:36:15,794 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-19 22:36:15,795 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-11-19 22:36:15,795 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2019-11-19 22:36:15,795 INFO L87 Difference]: Start difference. First operand 21 states and 21 transitions. Second operand 11 states. [2019-11-19 22:36:16,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 22:36:16,130 INFO L93 Difference]: Finished difference Result 28 states and 29 transitions. [2019-11-19 22:36:16,130 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2019-11-19 22:36:16,130 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 20 [2019-11-19 22:36:16,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 22:36:16,131 INFO L225 Difference]: With dead ends: 28 [2019-11-19 22:36:16,131 INFO L226 Difference]: Without dead ends: 0 [2019-11-19 22:36:16,132 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=167, Invalid=433, Unknown=0, NotChecked=0, Total=600 [2019-11-19 22:36:16,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-19 22:36:16,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-19 22:36:16,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-19 22:36:16,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-19 22:36:16,133 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 20 [2019-11-19 22:36:16,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 22:36:16,133 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-19 22:36:16,134 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-11-19 22:36:16,134 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-19 22:36:16,134 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-19 22:36:16,341 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-19 22:36:16,344 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-19 22:36:16,555 INFO L444 ceAbstractionStarter]: For program point L35-2(lines 35 39) no Hoare annotation was computed. [2019-11-19 22:36:16,556 INFO L440 ceAbstractionStarter]: At program point L35-3(lines 35 39) the Hoare annotation is: (let ((.cse0 (<= 1 ULTIMATE.start_main_~leader_len~0)) (.cse1 (+ (* 2 ULTIMATE.start_main_~ielen~0) ULTIMATE.start_main_~p~0)) (.cse2 (<= 1 ULTIMATE.start_main_~p~0))) (or (and .cse0 (<= .cse1 (+ ULTIMATE.start_main_~bufsize_0~0 (* 2 ULTIMATE.start_main_~i~0))) (= 1 ULTIMATE.start___VERIFIER_assert_~cond) .cse2) (and .cse0 (<= .cse1 ULTIMATE.start_main_~bufsize_0~0) (<= (+ ULTIMATE.start_main_~bufsize~0 ULTIMATE.start_main_~p~0) ULTIMATE.start_main_~bufsize_0~0) .cse2 (<= 0 ULTIMATE.start_main_~i~0)))) [2019-11-19 22:36:16,556 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2019-11-19 22:36:16,556 INFO L444 ceAbstractionStarter]: For program point L23(line 23) no Hoare annotation was computed. [2019-11-19 22:36:16,556 INFO L447 ceAbstractionStarter]: At program point L40(lines 11 42) the Hoare annotation is: true [2019-11-19 22:36:16,557 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-11-19 22:36:16,557 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-11-19 22:36:16,557 INFO L444 ceAbstractionStarter]: For program point L24(line 24) no Hoare annotation was computed. [2019-11-19 22:36:16,557 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2019-11-19 22:36:16,557 INFO L444 ceAbstractionStarter]: For program point L24-1(lines 11 42) no Hoare annotation was computed. [2019-11-19 22:36:16,557 INFO L444 ceAbstractionStarter]: For program point L4(lines 4 6) no Hoare annotation was computed. [2019-11-19 22:36:16,558 INFO L440 ceAbstractionStarter]: At program point L4-2(lines 3 8) the Hoare annotation is: (and (<= 1 ULTIMATE.start_main_~leader_len~0) (<= (+ ULTIMATE.start_main_~p~0 2) ULTIMATE.start_main_~bufsize_0~0) (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond)) (<= (+ (* 2 ULTIMATE.start_main_~ielen~0) ULTIMATE.start_main_~p~0) (+ ULTIMATE.start_main_~bufsize_0~0 (* 2 ULTIMATE.start_main_~i~0))) (<= 1 ULTIMATE.start_main_~p~0)) [2019-11-19 22:36:16,558 INFO L444 ceAbstractionStarter]: For program point L33(lines 33 34) no Hoare annotation was computed. [2019-11-19 22:36:16,558 INFO L444 ceAbstractionStarter]: For program point L4-3(lines 4 6) no Hoare annotation was computed. [2019-11-19 22:36:16,558 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-19 22:36:16,558 INFO L440 ceAbstractionStarter]: At program point L4-5(lines 3 8) the Hoare annotation is: (and (<= 1 ULTIMATE.start_main_~leader_len~0) (<= (+ ULTIMATE.start_main_~p~0 2) ULTIMATE.start_main_~bufsize_0~0) (<= (+ (* 2 ULTIMATE.start_main_~ielen~0) ULTIMATE.start_main_~p~0) (+ ULTIMATE.start_main_~bufsize_0~0 (* 2 ULTIMATE.start_main_~i~0))) (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (<= 1 ULTIMATE.start_main_~p~0)) [2019-11-19 22:36:16,558 INFO L444 ceAbstractionStarter]: For program point L25(lines 11 42) no Hoare annotation was computed. [2019-11-19 22:36:16,559 INFO L444 ceAbstractionStarter]: For program point L21(line 21) no Hoare annotation was computed. [2019-11-19 22:36:16,559 INFO L444 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2019-11-19 22:36:16,559 INFO L444 ceAbstractionStarter]: For program point L5-1(line 5) no Hoare annotation was computed. [2019-11-19 22:36:16,559 INFO L444 ceAbstractionStarter]: For program point L26(lines 11 42) no Hoare annotation was computed. [2019-11-19 22:36:16,559 INFO L444 ceAbstractionStarter]: For program point L22(line 22) no Hoare annotation was computed. [2019-11-19 22:36:16,594 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 10:36:16 BoogieIcfgContainer [2019-11-19 22:36:16,594 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-19 22:36:16,595 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-19 22:36:16,595 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-19 22:36:16,595 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-19 22:36:16,596 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 10:36:14" (3/4) ... [2019-11-19 22:36:16,600 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-11-19 22:36:16,613 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2019-11-19 22:36:16,613 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2019-11-19 22:36:16,703 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_57dac93d-0595-49ee-8b49-04ce08fcd1e0/bin/uautomizer/witness.graphml [2019-11-19 22:36:16,703 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-19 22:36:16,705 INFO L168 Benchmark]: Toolchain (without parser) took 2598.73 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 152.6 MB). Free memory was 951.4 MB in the beginning and 988.0 MB in the end (delta: -36.6 MB). Peak memory consumption was 116.0 MB. Max. memory is 11.5 GB. [2019-11-19 22:36:16,706 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-19 22:36:16,706 INFO L168 Benchmark]: CACSL2BoogieTranslator took 306.78 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 152.6 MB). Free memory was 951.4 MB in the beginning and 1.2 GB in the end (delta: -198.7 MB). Peak memory consumption was 23.0 MB. Max. memory is 11.5 GB. [2019-11-19 22:36:16,707 INFO L168 Benchmark]: Boogie Procedure Inliner took 38.59 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-19 22:36:16,707 INFO L168 Benchmark]: Boogie Preprocessor took 28.88 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2019-11-19 22:36:16,708 INFO L168 Benchmark]: RCFGBuilder took 405.66 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: 18.4 MB). Peak memory consumption was 18.4 MB. Max. memory is 11.5 GB. [2019-11-19 22:36:16,710 INFO L168 Benchmark]: TraceAbstraction took 1706.19 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 993.3 MB in the end (delta: 130.3 MB). Peak memory consumption was 130.3 MB. Max. memory is 11.5 GB. [2019-11-19 22:36:16,710 INFO L168 Benchmark]: Witness Printer took 108.70 ms. Allocated memory is still 1.2 GB. Free memory was 993.3 MB in the beginning and 988.0 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2019-11-19 22:36:16,713 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 306.78 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 152.6 MB). Free memory was 951.4 MB in the beginning and 1.2 GB in the end (delta: -198.7 MB). Peak memory consumption was 23.0 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 38.59 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 28.88 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 405.66 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: 18.4 MB). Peak memory consumption was 18.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1706.19 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 993.3 MB in the end (delta: 130.3 MB). Peak memory consumption was 130.3 MB. Max. memory is 11.5 GB. * Witness Printer took 108.70 ms. Allocated memory is still 1.2 GB. Free memory was 993.3 MB in the beginning and 988.0 MB 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 - 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 2 specifications checked. All of them hold - InvariantResult [Line: 3]: Loop Invariant Derived loop invariant: (((1 <= leader_len && p + 2 <= bufsize_0) && 2 * ielen + p <= bufsize_0 + 2 * i) && 1 == cond) && 1 <= p - InvariantResult [Line: 35]: Loop Invariant Derived loop invariant: (((1 <= leader_len && 2 * ielen + p <= bufsize_0 + 2 * i) && 1 == cond) && 1 <= p) || ((((1 <= leader_len && 2 * ielen + p <= bufsize_0) && bufsize + p <= bufsize_0) && 1 <= p) && 0 <= i) - InvariantResult [Line: 3]: Loop Invariant Derived loop invariant: (((1 <= leader_len && p + 2 <= bufsize_0) && !(0 == cond)) && 2 * ielen + p <= bufsize_0 + 2 * i) && 1 <= p - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 22 locations, 2 error locations. Result: SAFE, OverallTime: 1.6s, OverallIterations: 3, TraceHistogramMax: 2, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, HoareTripleCheckerStatistics: 50 SDtfs, 59 SDslu, 108 SDs, 0 SdLazy, 101 SolverSat, 40 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 55 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=22occurred 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, 3 MinimizatonAttempts, 2 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 17 NumberOfFragments, 98 HoareAnnotationTreeSize, 4 FomulaSimplifications, 102 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 4 FomulaSimplificationsInter, 165 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 66 NumberOfCodeBlocks, 66 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 62 ConstructedInterpolants, 0 QuantifiedInterpolants, 4708 SizeOfPredicates, 8 NumberOfNonLiveVariables, 60 ConjunctsInSsa, 14 ConjunctsInUnsatCore, 4 InterpolantComputations, 2 PerfectInterpolantSequences, 1/8 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...