./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-regression/test03.c --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_fe2820eb-e6a1-4a0c-b2ed-155b722dc060/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_fe2820eb-e6a1-4a0c-b2ed-155b722dc060/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_fe2820eb-e6a1-4a0c-b2ed-155b722dc060/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_fe2820eb-e6a1-4a0c-b2ed-155b722dc060/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-regression/test03.c -s /tmp/vcloud-vcloud-master/worker/run_dir_fe2820eb-e6a1-4a0c-b2ed-155b722dc060/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_fe2820eb-e6a1-4a0c-b2ed-155b722dc060/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 096d3328266eb6def3b8e487a1924a44a09934d2 .................................................................................................................................................................................................................................................................... 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 05:22:34,261 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-20 05:22:34,263 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-20 05:22:34,284 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-20 05:22:34,285 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-20 05:22:34,286 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-20 05:22:34,289 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-20 05:22:34,299 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-20 05:22:34,305 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-20 05:22:34,309 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-20 05:22:34,311 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-20 05:22:34,312 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-20 05:22:34,313 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-20 05:22:34,316 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-20 05:22:34,317 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-20 05:22:34,318 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-20 05:22:34,319 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-20 05:22:34,320 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-20 05:22:34,323 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-20 05:22:34,328 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-20 05:22:34,334 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-20 05:22:34,336 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-20 05:22:34,341 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-20 05:22:34,342 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-20 05:22:34,347 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-20 05:22:34,348 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-20 05:22:34,348 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-20 05:22:34,350 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-20 05:22:34,351 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-20 05:22:34,352 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-20 05:22:34,353 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-20 05:22:34,354 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-20 05:22:34,354 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-20 05:22:34,356 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-20 05:22:34,357 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-20 05:22:34,357 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-20 05:22:34,358 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-20 05:22:34,358 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-20 05:22:34,358 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-20 05:22:34,359 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-20 05:22:34,361 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-20 05:22:34,362 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_fe2820eb-e6a1-4a0c-b2ed-155b722dc060/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-20 05:22:34,393 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-20 05:22:34,406 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-20 05:22:34,407 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-20 05:22:34,407 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-20 05:22:34,408 INFO L138 SettingsManager]: * Use SBE=true [2019-11-20 05:22:34,408 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-20 05:22:34,408 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-20 05:22:34,409 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-20 05:22:34,409 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-20 05:22:34,409 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-20 05:22:34,409 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-20 05:22:34,410 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-20 05:22:34,410 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-20 05:22:34,410 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-20 05:22:34,410 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-20 05:22:34,411 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-20 05:22:34,411 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-20 05:22:34,411 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-20 05:22:34,412 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-20 05:22:34,412 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-20 05:22:34,412 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-20 05:22:34,413 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-20 05:22:34,413 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-20 05:22:34,413 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-20 05:22:34,413 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-20 05:22:34,414 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-20 05:22:34,414 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-20 05:22:34,414 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-20 05:22:34,415 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_fe2820eb-e6a1-4a0c-b2ed-155b722dc060/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 -> 096d3328266eb6def3b8e487a1924a44a09934d2 [2019-11-20 05:22:34,619 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-20 05:22:34,630 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-20 05:22:34,634 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-20 05:22:34,636 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-20 05:22:34,637 INFO L275 PluginConnector]: CDTParser initialized [2019-11-20 05:22:34,637 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_fe2820eb-e6a1-4a0c-b2ed-155b722dc060/bin/uautomizer/../../sv-benchmarks/c/ldv-regression/test03.c [2019-11-20 05:22:34,706 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_fe2820eb-e6a1-4a0c-b2ed-155b722dc060/bin/uautomizer/data/34ca150f8/81bed5901c694c0c8e1161e0e39e722e/FLAGf9e4b4541 [2019-11-20 05:22:35,150 INFO L306 CDTParser]: Found 1 translation units. [2019-11-20 05:22:35,151 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_fe2820eb-e6a1-4a0c-b2ed-155b722dc060/sv-benchmarks/c/ldv-regression/test03.c [2019-11-20 05:22:35,158 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_fe2820eb-e6a1-4a0c-b2ed-155b722dc060/bin/uautomizer/data/34ca150f8/81bed5901c694c0c8e1161e0e39e722e/FLAGf9e4b4541 [2019-11-20 05:22:35,522 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_fe2820eb-e6a1-4a0c-b2ed-155b722dc060/bin/uautomizer/data/34ca150f8/81bed5901c694c0c8e1161e0e39e722e [2019-11-20 05:22:35,526 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-20 05:22:35,527 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-20 05:22:35,529 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-20 05:22:35,529 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-20 05:22:35,533 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-20 05:22:35,534 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 05:22:35" (1/1) ... [2019-11-20 05:22:35,537 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a13f8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:22:35, skipping insertion in model container [2019-11-20 05:22:35,538 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 05:22:35" (1/1) ... [2019-11-20 05:22:35,546 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-20 05:22:35,566 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-20 05:22:35,737 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 05:22:35,741 INFO L188 MainTranslator]: Completed pre-run [2019-11-20 05:22:35,838 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 05:22:35,862 INFO L192 MainTranslator]: Completed translation [2019-11-20 05:22:35,863 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:22:35 WrapperNode [2019-11-20 05:22:35,863 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-20 05:22:35,865 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-20 05:22:35,865 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-20 05:22:35,865 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-20 05:22:35,876 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:22:35" (1/1) ... [2019-11-20 05:22:35,885 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:22:35" (1/1) ... [2019-11-20 05:22:35,909 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-20 05:22:35,909 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-20 05:22:35,909 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-20 05:22:35,910 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-20 05:22:35,920 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:22:35" (1/1) ... [2019-11-20 05:22:35,921 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:22:35" (1/1) ... [2019-11-20 05:22:35,922 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:22:35" (1/1) ... [2019-11-20 05:22:35,923 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:22:35" (1/1) ... [2019-11-20 05:22:35,931 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:22:35" (1/1) ... [2019-11-20 05:22:35,933 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:22:35" (1/1) ... [2019-11-20 05:22:35,934 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:22:35" (1/1) ... [2019-11-20 05:22:35,937 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-20 05:22:35,937 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-20 05:22:35,937 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-20 05:22:35,938 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-20 05:22:35,939 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:22:35" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fe2820eb-e6a1-4a0c-b2ed-155b722dc060/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 05:22:36,007 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-20 05:22:36,007 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-20 05:22:36,007 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-20 05:22:36,007 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-20 05:22:36,008 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-20 05:22:36,008 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-20 05:22:36,196 INFO L280 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-20 05:22:36,196 INFO L285 CfgBuilder]: Removed 6 assume(true) statements. [2019-11-20 05:22:36,197 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 05:22:36 BoogieIcfgContainer [2019-11-20 05:22:36,198 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-20 05:22:36,198 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-20 05:22:36,198 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-20 05:22:36,201 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-20 05:22:36,202 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 05:22:35" (1/3) ... [2019-11-20 05:22:36,202 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@343d28e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 05:22:36, skipping insertion in model container [2019-11-20 05:22:36,203 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:22:35" (2/3) ... [2019-11-20 05:22:36,203 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@343d28e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 05:22:36, skipping insertion in model container [2019-11-20 05:22:36,204 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 05:22:36" (3/3) ... [2019-11-20 05:22:36,205 INFO L109 eAbstractionObserver]: Analyzing ICFG test03.c [2019-11-20 05:22:36,217 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-20 05:22:36,224 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-20 05:22:36,233 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-20 05:22:36,256 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-20 05:22:36,256 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-20 05:22:36,257 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-20 05:22:36,257 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-20 05:22:36,257 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-20 05:22:36,257 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-20 05:22:36,257 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-20 05:22:36,258 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-20 05:22:36,272 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states. [2019-11-20 05:22:36,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-11-20 05:22:36,278 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 05:22:36,279 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-11-20 05:22:36,279 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 05:22:36,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 05:22:36,285 INFO L82 PathProgramCache]: Analyzing trace with hash 28692805, now seen corresponding path program 1 times [2019-11-20 05:22:36,293 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 05:22:36,294 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031080115] [2019-11-20 05:22:36,294 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 05:22:36,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 05:22:36,544 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 05:22:36,544 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031080115] [2019-11-20 05:22:36,545 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-20 05:22:36,546 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-20 05:22:36,547 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694173500] [2019-11-20 05:22:36,552 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-20 05:22:36,554 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 05:22:36,572 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-20 05:22:36,574 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-20 05:22:36,576 INFO L87 Difference]: Start difference. First operand 9 states. Second operand 4 states. [2019-11-20 05:22:36,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 05:22:36,769 INFO L93 Difference]: Finished difference Result 12 states and 11 transitions. [2019-11-20 05:22:36,769 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-20 05:22:36,771 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 5 [2019-11-20 05:22:36,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 05:22:36,779 INFO L225 Difference]: With dead ends: 12 [2019-11-20 05:22:36,797 INFO L226 Difference]: Without dead ends: 0 [2019-11-20 05:22:36,800 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-20 05:22:36,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-20 05:22:36,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-20 05:22:36,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-20 05:22:36,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-20 05:22:36,829 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 5 [2019-11-20 05:22:36,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 05:22:36,830 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-20 05:22:36,830 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-20 05:22:36,830 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-20 05:22:36,831 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-20 05:22:36,836 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-20 05:22:36,862 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-20 05:22:36,862 INFO L444 ceAbstractionStarter]: For program point L-1(line -1) no Hoare annotation was computed. [2019-11-20 05:22:36,863 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-11-20 05:22:36,863 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-11-20 05:22:36,863 INFO L440 ceAbstractionStarter]: At program point L27(lines 10 28) the Hoare annotation is: (= 0 |ULTIMATE.start_f_#res|) [2019-11-20 05:22:36,863 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 26) no Hoare annotation was computed. [2019-11-20 05:22:36,864 INFO L440 ceAbstractionStarter]: At program point L21(lines 10 28) the Hoare annotation is: false [2019-11-20 05:22:36,864 INFO L444 ceAbstractionStarter]: For program point L20(lines 20 22) no Hoare annotation was computed. [2019-11-20 05:22:36,864 INFO L440 ceAbstractionStarter]: At program point L5(lines 4 6) the Hoare annotation is: (= 0 |ULTIMATE.start_f_#res|) [2019-11-20 05:22:36,882 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 05:22:36 BoogieIcfgContainer [2019-11-20 05:22:36,882 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-20 05:22:36,883 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-20 05:22:36,883 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-20 05:22:36,883 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-20 05:22:36,884 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 05:22:36" (3/4) ... [2019-11-20 05:22:36,888 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-11-20 05:22:36,901 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2019-11-20 05:22:36,901 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2019-11-20 05:22:36,901 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2019-11-20 05:22:36,927 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: 0 == \result [2019-11-20 05:22:36,928 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: 0 == \result [2019-11-20 05:22:36,963 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_fe2820eb-e6a1-4a0c-b2ed-155b722dc060/bin/uautomizer/witness.graphml [2019-11-20 05:22:36,963 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-20 05:22:36,966 INFO L168 Benchmark]: Toolchain (without parser) took 1437.59 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 154.1 MB). Free memory was 948.8 MB in the beginning and 1.1 GB in the end (delta: -142.9 MB). Peak memory consumption was 11.2 MB. Max. memory is 11.5 GB. [2019-11-20 05:22:36,966 INFO L168 Benchmark]: CDTParser took 0.32 ms. Allocated memory is still 1.0 GB. Free memory is still 966.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 05:22:36,967 INFO L168 Benchmark]: CACSL2BoogieTranslator took 335.70 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 154.1 MB). Free memory was 947.4 MB in the beginning and 1.2 GB in the end (delta: -206.5 MB). Peak memory consumption was 21.8 MB. Max. memory is 11.5 GB. [2019-11-20 05:22:36,968 INFO L168 Benchmark]: Boogie Procedure Inliner took 44.26 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: 5.1 MB). Peak memory consumption was 5.1 MB. Max. memory is 11.5 GB. [2019-11-20 05:22:36,969 INFO L168 Benchmark]: Boogie Preprocessor took 27.75 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: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 11.5 GB. [2019-11-20 05:22:36,969 INFO L168 Benchmark]: RCFGBuilder took 260.54 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: 21.5 MB). Peak memory consumption was 21.5 MB. Max. memory is 11.5 GB. [2019-11-20 05:22:36,970 INFO L168 Benchmark]: TraceAbstraction took 683.78 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: 30.5 MB). Peak memory consumption was 30.5 MB. Max. memory is 11.5 GB. [2019-11-20 05:22:36,971 INFO L168 Benchmark]: Witness Printer took 80.57 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: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 11.5 GB. [2019-11-20 05:22:36,975 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32 ms. Allocated memory is still 1.0 GB. Free memory is still 966.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 335.70 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 154.1 MB). Free memory was 947.4 MB in the beginning and 1.2 GB in the end (delta: -206.5 MB). Peak memory consumption was 21.8 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 44.26 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: 5.1 MB). Peak memory consumption was 5.1 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 27.75 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: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 260.54 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: 21.5 MB). Peak memory consumption was 21.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 683.78 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: 30.5 MB). Peak memory consumption was 30.5 MB. Max. memory is 11.5 GB. * Witness Printer took 80.57 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: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 26]: 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: 4]: Loop Invariant Derived loop invariant: 0 == \result - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: 0 == \result - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 9 locations, 1 error locations. Result: SAFE, OverallTime: 0.6s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 4 SDtfs, 3 SDslu, 4 SDs, 0 SdLazy, 4 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=9occurred 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, 3 LocationsWithAnnotation, 3 PreInvPairs, 4 NumberOfFragments, 7 HoareAnnotationTreeSize, 3 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 5 NumberOfCodeBlocks, 5 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 4 ConstructedInterpolants, 0 QuantifiedInterpolants, 32 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...