./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-invgen/id_build.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_ca1c724b-df4d-4cfb-9869-bc314c53b948/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_ca1c724b-df4d-4cfb-9869-bc314c53b948/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_ca1c724b-df4d-4cfb-9869-bc314c53b948/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_ca1c724b-df4d-4cfb-9869-bc314c53b948/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/loop-invgen/id_build.i -s /tmp/vcloud-vcloud-master/worker/run_dir_ca1c724b-df4d-4cfb-9869-bc314c53b948/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_ca1c724b-df4d-4cfb-9869-bc314c53b948/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 595e0ffd0ff086ae45c2b9536863374b9b9c0fb6 ............................................................................................................................................................................................................................................................................................................... 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 10:37:07,179 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-20 10:37:07,181 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-20 10:37:07,195 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-20 10:37:07,195 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-20 10:37:07,197 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-20 10:37:07,199 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-20 10:37:07,207 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-20 10:37:07,211 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-20 10:37:07,215 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-20 10:37:07,216 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-20 10:37:07,217 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-20 10:37:07,217 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-20 10:37:07,219 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-20 10:37:07,221 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-20 10:37:07,222 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-20 10:37:07,223 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-20 10:37:07,223 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-20 10:37:07,226 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-20 10:37:07,229 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-20 10:37:07,233 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-20 10:37:07,235 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-20 10:37:07,237 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-20 10:37:07,238 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-20 10:37:07,241 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-20 10:37:07,241 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-20 10:37:07,241 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-20 10:37:07,243 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-20 10:37:07,243 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-20 10:37:07,244 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-20 10:37:07,244 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-20 10:37:07,245 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-20 10:37:07,245 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-20 10:37:07,246 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-20 10:37:07,247 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-20 10:37:07,247 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-20 10:37:07,248 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-20 10:37:07,248 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-20 10:37:07,248 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-20 10:37:07,249 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-20 10:37:07,250 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-20 10:37:07,250 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_ca1c724b-df4d-4cfb-9869-bc314c53b948/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-20 10:37:07,273 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-20 10:37:07,283 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-20 10:37:07,284 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-20 10:37:07,284 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-20 10:37:07,284 INFO L138 SettingsManager]: * Use SBE=true [2019-11-20 10:37:07,284 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-20 10:37:07,285 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-20 10:37:07,285 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-20 10:37:07,285 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-20 10:37:07,285 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-20 10:37:07,287 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-20 10:37:07,288 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-20 10:37:07,288 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-20 10:37:07,288 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-20 10:37:07,288 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-20 10:37:07,288 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-20 10:37:07,289 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-20 10:37:07,289 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-20 10:37:07,289 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-20 10:37:07,289 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-20 10:37:07,290 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-20 10:37:07,291 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-20 10:37:07,291 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-20 10:37:07,293 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-20 10:37:07,294 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-20 10:37:07,294 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-20 10:37:07,294 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-20 10:37:07,294 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-20 10:37:07,295 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_ca1c724b-df4d-4cfb-9869-bc314c53b948/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 -> 595e0ffd0ff086ae45c2b9536863374b9b9c0fb6 [2019-11-20 10:37:07,429 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-20 10:37:07,439 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-20 10:37:07,442 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-20 10:37:07,443 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-20 10:37:07,444 INFO L275 PluginConnector]: CDTParser initialized [2019-11-20 10:37:07,444 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_ca1c724b-df4d-4cfb-9869-bc314c53b948/bin/uautomizer/../../sv-benchmarks/c/loop-invgen/id_build.i [2019-11-20 10:37:07,496 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_ca1c724b-df4d-4cfb-9869-bc314c53b948/bin/uautomizer/data/93f85269c/9c897b27a6ad4f62affce7300e5206a8/FLAGfdc100d64 [2019-11-20 10:37:07,873 INFO L306 CDTParser]: Found 1 translation units. [2019-11-20 10:37:07,874 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_ca1c724b-df4d-4cfb-9869-bc314c53b948/sv-benchmarks/c/loop-invgen/id_build.i [2019-11-20 10:37:07,880 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_ca1c724b-df4d-4cfb-9869-bc314c53b948/bin/uautomizer/data/93f85269c/9c897b27a6ad4f62affce7300e5206a8/FLAGfdc100d64 [2019-11-20 10:37:07,895 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_ca1c724b-df4d-4cfb-9869-bc314c53b948/bin/uautomizer/data/93f85269c/9c897b27a6ad4f62affce7300e5206a8 [2019-11-20 10:37:07,897 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-20 10:37:07,899 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-20 10:37:07,901 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-20 10:37:07,901 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-20 10:37:07,904 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-20 10:37:07,905 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:37:07" (1/1) ... [2019-11-20 10:37:07,907 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@203f0c88 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:37:07, skipping insertion in model container [2019-11-20 10:37:07,907 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:37:07" (1/1) ... [2019-11-20 10:37:07,914 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-20 10:37:07,930 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-20 10:37:08,099 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 10:37:08,102 INFO L188 MainTranslator]: Completed pre-run [2019-11-20 10:37:08,222 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 10:37:08,234 INFO L192 MainTranslator]: Completed translation [2019-11-20 10:37:08,235 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:37:08 WrapperNode [2019-11-20 10:37:08,235 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-20 10:37:08,235 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-20 10:37:08,235 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-20 10:37:08,235 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-20 10:37:08,241 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:37:08" (1/1) ... [2019-11-20 10:37:08,244 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:37:08" (1/1) ... [2019-11-20 10:37:08,258 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-20 10:37:08,258 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-20 10:37:08,258 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-20 10:37:08,258 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-20 10:37:08,265 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:37:08" (1/1) ... [2019-11-20 10:37:08,266 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:37:08" (1/1) ... [2019-11-20 10:37:08,266 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:37:08" (1/1) ... [2019-11-20 10:37:08,266 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:37:08" (1/1) ... [2019-11-20 10:37:08,268 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:37:08" (1/1) ... [2019-11-20 10:37:08,271 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:37:08" (1/1) ... [2019-11-20 10:37:08,272 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:37:08" (1/1) ... [2019-11-20 10:37:08,273 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-20 10:37:08,274 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-20 10:37:08,274 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-20 10:37:08,274 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-20 10:37:08,275 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:37:08" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ca1c724b-df4d-4cfb-9869-bc314c53b948/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 10:37:08,323 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-20 10:37:08,323 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-20 10:37:08,480 INFO L280 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-20 10:37:08,480 INFO L285 CfgBuilder]: Removed 10 assume(true) statements. [2019-11-20 10:37:08,481 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:37:08 BoogieIcfgContainer [2019-11-20 10:37:08,481 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-20 10:37:08,482 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-20 10:37:08,482 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-20 10:37:08,485 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-20 10:37:08,485 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 10:37:07" (1/3) ... [2019-11-20 10:37:08,486 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@827e251 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 10:37:08, skipping insertion in model container [2019-11-20 10:37:08,486 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:37:08" (2/3) ... [2019-11-20 10:37:08,487 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@827e251 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 10:37:08, skipping insertion in model container [2019-11-20 10:37:08,487 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:37:08" (3/3) ... [2019-11-20 10:37:08,488 INFO L109 eAbstractionObserver]: Analyzing ICFG id_build.i [2019-11-20 10:37:08,496 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-20 10:37:08,502 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2019-11-20 10:37:08,512 INFO L249 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2019-11-20 10:37:08,531 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-20 10:37:08,531 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-20 10:37:08,531 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-20 10:37:08,531 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-20 10:37:08,532 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-20 10:37:08,532 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-20 10:37:08,532 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-20 10:37:08,532 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-20 10:37:08,544 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states. [2019-11-20 10:37:08,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-11-20 10:37:08,549 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 10:37:08,550 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-11-20 10:37:08,550 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 10:37:08,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 10:37:08,555 INFO L82 PathProgramCache]: Analyzing trace with hash 29837770, now seen corresponding path program 1 times [2019-11-20 10:37:08,563 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 10:37:08,563 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809994647] [2019-11-20 10:37:08,563 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 10:37:08,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:37:08,698 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 10:37:08,698 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [809994647] [2019-11-20 10:37:08,699 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-20 10:37:08,699 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-20 10:37:08,700 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803155223] [2019-11-20 10:37:08,703 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-20 10:37:08,704 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 10:37:08,712 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-20 10:37:08,712 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-20 10:37:08,714 INFO L87 Difference]: Start difference. First operand 16 states. Second operand 4 states. [2019-11-20 10:37:08,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 10:37:08,786 INFO L93 Difference]: Finished difference Result 36 states and 49 transitions. [2019-11-20 10:37:08,786 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-20 10:37:08,788 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 5 [2019-11-20 10:37:08,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 10:37:08,796 INFO L225 Difference]: With dead ends: 36 [2019-11-20 10:37:08,796 INFO L226 Difference]: Without dead ends: 13 [2019-11-20 10:37:08,799 INFO L630 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 [2019-11-20 10:37:08,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2019-11-20 10:37:08,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 10. [2019-11-20 10:37:08,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2019-11-20 10:37:08,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 11 transitions. [2019-11-20 10:37:08,823 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 11 transitions. Word has length 5 [2019-11-20 10:37:08,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 10:37:08,823 INFO L462 AbstractCegarLoop]: Abstraction has 10 states and 11 transitions. [2019-11-20 10:37:08,823 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-20 10:37:08,824 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 11 transitions. [2019-11-20 10:37:08,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-11-20 10:37:08,824 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 10:37:08,824 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-11-20 10:37:08,825 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 10:37:08,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 10:37:08,825 INFO L82 PathProgramCache]: Analyzing trace with hash -1390518387, now seen corresponding path program 1 times [2019-11-20 10:37:08,825 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 10:37:08,826 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1200576324] [2019-11-20 10:37:08,826 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 10:37:08,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:37:08,859 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 10:37:08,859 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1200576324] [2019-11-20 10:37:08,860 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-20 10:37:08,860 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-20 10:37:08,860 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133497385] [2019-11-20 10:37:08,861 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-20 10:37:08,861 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 10:37:08,862 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-20 10:37:08,862 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-20 10:37:08,862 INFO L87 Difference]: Start difference. First operand 10 states and 11 transitions. Second operand 4 states. [2019-11-20 10:37:08,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 10:37:08,907 INFO L93 Difference]: Finished difference Result 13 states and 15 transitions. [2019-11-20 10:37:08,907 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-20 10:37:08,908 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2019-11-20 10:37:08,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 10:37:08,908 INFO L225 Difference]: With dead ends: 13 [2019-11-20 10:37:08,908 INFO L226 Difference]: Without dead ends: 0 [2019-11-20 10:37:08,909 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-20 10:37:08,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-20 10:37:08,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-20 10:37:08,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-20 10:37:08,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-20 10:37:08,910 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 7 [2019-11-20 10:37:08,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 10:37:08,910 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-20 10:37:08,910 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-20 10:37:08,911 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-20 10:37:08,911 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-20 10:37:08,915 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-20 10:37:08,979 INFO L444 ceAbstractionStarter]: For program point L4-3(lines 4 6) no Hoare annotation was computed. [2019-11-20 10:37:08,979 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-20 10:37:08,979 INFO L440 ceAbstractionStarter]: At program point L4-5(lines 1 20) the Hoare annotation is: (and (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond)) (<= 0 ULTIMATE.start_main_~i~0) (< ULTIMATE.start_main_~i~0 ULTIMATE.start_main_~nlen~0)) [2019-11-20 10:37:08,979 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2019-11-20 10:37:08,979 INFO L447 ceAbstractionStarter]: At program point L19(lines 10 20) the Hoare annotation is: true [2019-11-20 10:37:08,980 INFO L444 ceAbstractionStarter]: For program point L13-2(lines 13 18) no Hoare annotation was computed. [2019-11-20 10:37:08,980 INFO L440 ceAbstractionStarter]: At program point L13-3(lines 13 18) the Hoare annotation is: (<= 0 ULTIMATE.start_main_~i~0) [2019-11-20 10:37:08,980 INFO L444 ceAbstractionStarter]: For program point L13-4(lines 13 18) no Hoare annotation was computed. [2019-11-20 10:37:08,980 INFO L444 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2019-11-20 10:37:08,980 INFO L444 ceAbstractionStarter]: For program point L5-1(line 5) no Hoare annotation was computed. [2019-11-20 10:37:08,980 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-11-20 10:37:08,980 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-11-20 10:37:08,981 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2019-11-20 10:37:08,981 INFO L440 ceAbstractionStarter]: At program point L14-2(lines 14 17) the Hoare annotation is: (and (< ULTIMATE.start_main_~i~0 ULTIMATE.start_main_~nlen~0) (<= 0 ULTIMATE.start_main_~i~0)) [2019-11-20 10:37:08,981 INFO L444 ceAbstractionStarter]: For program point L4(lines 4 6) no Hoare annotation was computed. [2019-11-20 10:37:08,981 INFO L440 ceAbstractionStarter]: At program point L4-2(lines 3 8) the Hoare annotation is: (and (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond)) (<= 0 ULTIMATE.start_main_~i~0) (< ULTIMATE.start_main_~i~0 ULTIMATE.start_main_~nlen~0)) [2019-11-20 10:37:08,999 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 10:37:08 BoogieIcfgContainer [2019-11-20 10:37:08,999 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-20 10:37:09,000 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-20 10:37:09,000 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-20 10:37:09,000 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-20 10:37:09,000 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:37:08" (3/4) ... [2019-11-20 10:37:09,003 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-11-20 10:37:09,010 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2019-11-20 10:37:09,011 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2019-11-20 10:37:09,048 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_ca1c724b-df4d-4cfb-9869-bc314c53b948/bin/uautomizer/witness.graphml [2019-11-20 10:37:09,048 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-20 10:37:09,050 INFO L168 Benchmark]: Toolchain (without parser) took 1150.87 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 138.9 MB). Free memory was 947.4 MB in the beginning and 1.1 GB in the end (delta: -130.3 MB). Peak memory consumption was 8.7 MB. Max. memory is 11.5 GB. [2019-11-20 10:37:09,050 INFO L168 Benchmark]: CDTParser took 0.25 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 10:37:09,051 INFO L168 Benchmark]: CACSL2BoogieTranslator took 333.97 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 138.9 MB). Free memory was 947.4 MB in the beginning and 1.1 GB in the end (delta: -189.0 MB). Peak memory consumption was 23.0 MB. Max. memory is 11.5 GB. [2019-11-20 10:37:09,051 INFO L168 Benchmark]: Boogie Procedure Inliner took 22.58 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 10:37:09,052 INFO L168 Benchmark]: Boogie Preprocessor took 15.42 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 10:37:09,052 INFO L168 Benchmark]: RCFGBuilder took 207.82 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: 19.8 MB). Peak memory consumption was 19.8 MB. Max. memory is 11.5 GB. [2019-11-20 10:37:09,053 INFO L168 Benchmark]: TraceAbstraction took 517.19 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: 39.0 MB). Peak memory consumption was 39.0 MB. Max. memory is 11.5 GB. [2019-11-20 10:37:09,053 INFO L168 Benchmark]: Witness Printer took 48.39 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 10:37:09,056 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 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 333.97 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 138.9 MB). Free memory was 947.4 MB in the beginning and 1.1 GB in the end (delta: -189.0 MB). Peak memory consumption was 23.0 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 22.58 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 15.42 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 207.82 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: 19.8 MB). Peak memory consumption was 19.8 MB. Max. memory is 11.5 GB. * TraceAbstraction took 517.19 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: 39.0 MB). Peak memory consumption was 39.0 MB. Max. memory is 11.5 GB. * Witness Printer took 48.39 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. * 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: 1]: Loop Invariant Derived loop invariant: (!(0 == cond) && 0 <= i) && i < nlen - InvariantResult [Line: 13]: Loop Invariant Derived loop invariant: 0 <= i - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: i < nlen && 0 <= i - InvariantResult [Line: 3]: Loop Invariant Derived loop invariant: (!(0 == cond) && 0 <= i) && i < nlen - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 16 locations, 2 error locations. Result: SAFE, OverallTime: 0.4s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 22 SDtfs, 22 SDslu, 16 SDs, 0 SdLazy, 26 SolverSat, 7 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 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, 2 MinimizatonAttempts, 3 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 5 LocationsWithAnnotation, 5 PreInvPairs, 13 NumberOfFragments, 33 HoareAnnotationTreeSize, 5 FomulaSimplifications, 39 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 5 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 12 NumberOfCodeBlocks, 12 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 10 ConstructedInterpolants, 0 QuantifiedInterpolants, 138 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, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...