./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/recursive/EvenOdd03.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b5699aa Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_ed3392aa-c5ca-4ee3-b8d9-7fdd0085e73c/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_ed3392aa-c5ca-4ee3-b8d9-7fdd0085e73c/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_ed3392aa-c5ca-4ee3-b8d9-7fdd0085e73c/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_ed3392aa-c5ca-4ee3-b8d9-7fdd0085e73c/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/recursive/EvenOdd03.c -s /tmp/vcloud-vcloud-master/worker/run_dir_ed3392aa-c5ca-4ee3-b8d9-7fdd0085e73c/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_ed3392aa-c5ca-4ee3-b8d9-7fdd0085e73c/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 f3d619d2c1c3b5319c1ba41a41e084c9947cb440 .................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.1.24-6b5699a [2019-11-25 08:49:17,996 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-25 08:49:17,998 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-25 08:49:18,012 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-25 08:49:18,013 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-25 08:49:18,014 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-25 08:49:18,015 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-25 08:49:18,024 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-25 08:49:18,028 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-25 08:49:18,032 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-25 08:49:18,033 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-25 08:49:18,034 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-25 08:49:18,034 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-25 08:49:18,036 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-25 08:49:18,037 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-25 08:49:18,038 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-25 08:49:18,039 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-25 08:49:18,040 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-25 08:49:18,042 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-25 08:49:18,046 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-25 08:49:18,049 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-25 08:49:18,052 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-25 08:49:18,054 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-25 08:49:18,055 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-25 08:49:18,058 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-25 08:49:18,058 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-25 08:49:18,058 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-25 08:49:18,060 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-25 08:49:18,060 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-25 08:49:18,061 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-25 08:49:18,061 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-25 08:49:18,062 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-25 08:49:18,063 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-25 08:49:18,064 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-25 08:49:18,064 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-25 08:49:18,065 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-25 08:49:18,065 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-25 08:49:18,065 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-25 08:49:18,066 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-25 08:49:18,066 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-25 08:49:18,067 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-25 08:49:18,068 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_ed3392aa-c5ca-4ee3-b8d9-7fdd0085e73c/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-25 08:49:18,091 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-25 08:49:18,105 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-25 08:49:18,106 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-25 08:49:18,106 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-25 08:49:18,106 INFO L138 SettingsManager]: * Use SBE=true [2019-11-25 08:49:18,107 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-25 08:49:18,107 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-25 08:49:18,107 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-25 08:49:18,107 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-25 08:49:18,108 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-25 08:49:18,108 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-25 08:49:18,109 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-25 08:49:18,109 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-25 08:49:18,109 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-25 08:49:18,109 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-25 08:49:18,109 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-25 08:49:18,110 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-25 08:49:18,110 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-25 08:49:18,110 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-25 08:49:18,110 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-25 08:49:18,110 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-25 08:49:18,111 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-25 08:49:18,111 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-25 08:49:18,111 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-25 08:49:18,111 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-25 08:49:18,112 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-25 08:49:18,112 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-25 08:49:18,112 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-25 08:49:18,112 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_ed3392aa-c5ca-4ee3-b8d9-7fdd0085e73c/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 -> f3d619d2c1c3b5319c1ba41a41e084c9947cb440 [2019-11-25 08:49:18,279 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-25 08:49:18,293 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-25 08:49:18,297 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-25 08:49:18,298 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-25 08:49:18,298 INFO L275 PluginConnector]: CDTParser initialized [2019-11-25 08:49:18,299 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_ed3392aa-c5ca-4ee3-b8d9-7fdd0085e73c/bin/uautomizer/../../sv-benchmarks/c/recursive/EvenOdd03.c [2019-11-25 08:49:18,354 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_ed3392aa-c5ca-4ee3-b8d9-7fdd0085e73c/bin/uautomizer/data/98b7b7f20/43e95b2a1f9f4a59913921b53f50c6ee/FLAG547668e03 [2019-11-25 08:49:18,744 INFO L306 CDTParser]: Found 1 translation units. [2019-11-25 08:49:18,745 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_ed3392aa-c5ca-4ee3-b8d9-7fdd0085e73c/sv-benchmarks/c/recursive/EvenOdd03.c [2019-11-25 08:49:18,751 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_ed3392aa-c5ca-4ee3-b8d9-7fdd0085e73c/bin/uautomizer/data/98b7b7f20/43e95b2a1f9f4a59913921b53f50c6ee/FLAG547668e03 [2019-11-25 08:49:19,154 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_ed3392aa-c5ca-4ee3-b8d9-7fdd0085e73c/bin/uautomizer/data/98b7b7f20/43e95b2a1f9f4a59913921b53f50c6ee [2019-11-25 08:49:19,157 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-25 08:49:19,158 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-25 08:49:19,159 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-25 08:49:19,159 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-25 08:49:19,162 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-25 08:49:19,163 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:49:19" (1/1) ... [2019-11-25 08:49:19,166 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b33eedf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:49:19, skipping insertion in model container [2019-11-25 08:49:19,166 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:49:19" (1/1) ... [2019-11-25 08:49:19,178 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-25 08:49:19,192 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-25 08:49:19,377 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-25 08:49:19,443 INFO L201 MainTranslator]: Completed pre-run [2019-11-25 08:49:19,463 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-25 08:49:19,477 INFO L205 MainTranslator]: Completed translation [2019-11-25 08:49:19,477 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:49:19 WrapperNode [2019-11-25 08:49:19,478 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-25 08:49:19,479 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-25 08:49:19,479 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-25 08:49:19,479 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-25 08:49:19,489 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:49:19" (1/1) ... [2019-11-25 08:49:19,494 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:49:19" (1/1) ... [2019-11-25 08:49:19,508 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-25 08:49:19,508 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-25 08:49:19,508 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-25 08:49:19,509 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-25 08:49:19,519 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:49:19" (1/1) ... [2019-11-25 08:49:19,519 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:49:19" (1/1) ... [2019-11-25 08:49:19,520 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:49:19" (1/1) ... [2019-11-25 08:49:19,520 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:49:19" (1/1) ... [2019-11-25 08:49:19,522 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:49:19" (1/1) ... [2019-11-25 08:49:19,525 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:49:19" (1/1) ... [2019-11-25 08:49:19,526 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:49:19" (1/1) ... [2019-11-25 08:49:19,529 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-25 08:49:19,529 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-25 08:49:19,529 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-25 08:49:19,530 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-25 08:49:19,530 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:49:19" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ed3392aa-c5ca-4ee3-b8d9-7fdd0085e73c/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 [2019-11-25 08:49:19,585 INFO L130 BoogieDeclarations]: Found specification of procedure isEven [2019-11-25 08:49:19,585 INFO L138 BoogieDeclarations]: Found implementation of procedure isEven [2019-11-25 08:49:19,586 INFO L130 BoogieDeclarations]: Found specification of procedure isOdd [2019-11-25 08:49:19,586 INFO L138 BoogieDeclarations]: Found implementation of procedure isOdd [2019-11-25 08:49:19,587 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-25 08:49:19,587 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-25 08:49:19,866 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-25 08:49:19,866 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-11-25 08:49:19,867 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:49:19 BoogieIcfgContainer [2019-11-25 08:49:19,867 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-25 08:49:19,868 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-25 08:49:19,868 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-25 08:49:19,871 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-25 08:49:19,873 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 08:49:19" (1/3) ... [2019-11-25 08:49:19,874 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b9291ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 08:49:19, skipping insertion in model container [2019-11-25 08:49:19,875 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:49:19" (2/3) ... [2019-11-25 08:49:19,875 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b9291ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 08:49:19, skipping insertion in model container [2019-11-25 08:49:19,875 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:49:19" (3/3) ... [2019-11-25 08:49:19,876 INFO L109 eAbstractionObserver]: Analyzing ICFG EvenOdd03.c [2019-11-25 08:49:19,883 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-25 08:49:19,889 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-25 08:49:19,898 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-25 08:49:19,919 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-25 08:49:19,919 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-25 08:49:19,920 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-25 08:49:19,920 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-25 08:49:19,920 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-25 08:49:19,920 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-25 08:49:19,920 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-25 08:49:19,920 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-25 08:49:19,940 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2019-11-25 08:49:19,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-25 08:49:19,945 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:49:19,946 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:49:19,947 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:49:19,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:49:19,952 INFO L82 PathProgramCache]: Analyzing trace with hash 1344174607, now seen corresponding path program 1 times [2019-11-25 08:49:19,960 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:49:19,960 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [246911403] [2019-11-25 08:49:19,961 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:49:20,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:49:20,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:49:20,071 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:49:20,072 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-25 08:49:20,090 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 08:49:20 BoogieIcfgContainer [2019-11-25 08:49:20,090 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-25 08:49:20,091 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-25 08:49:20,091 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-25 08:49:20,091 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-25 08:49:20,091 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:49:19" (3/4) ... [2019-11-25 08:49:20,093 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-25 08:49:20,128 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_ed3392aa-c5ca-4ee3-b8d9-7fdd0085e73c/bin/uautomizer/witness.graphml [2019-11-25 08:49:20,128 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-25 08:49:20,130 INFO L168 Benchmark]: Toolchain (without parser) took 971.54 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 159.4 MB). Free memory was 950.1 MB in the beginning and 1.1 GB in the end (delta: -168.2 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-11-25 08:49:20,131 INFO L168 Benchmark]: CDTParser took 0.23 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. [2019-11-25 08:49:20,132 INFO L168 Benchmark]: CACSL2BoogieTranslator took 319.85 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 159.4 MB). Free memory was 950.1 MB in the beginning and 1.2 GB in the end (delta: -201.5 MB). Peak memory consumption was 22.9 MB. Max. memory is 11.5 GB. [2019-11-25 08:49:20,132 INFO L168 Benchmark]: Boogie Procedure Inliner took 28.96 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. [2019-11-25 08:49:20,132 INFO L168 Benchmark]: Boogie Preprocessor took 20.87 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. [2019-11-25 08:49:20,133 INFO L168 Benchmark]: RCFGBuilder took 338.17 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: 20.4 MB). Peak memory consumption was 20.4 MB. Max. memory is 11.5 GB. [2019-11-25 08:49:20,133 INFO L168 Benchmark]: TraceAbstraction took 222.14 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: 12.9 MB). Peak memory consumption was 12.9 MB. Max. memory is 11.5 GB. [2019-11-25 08:49:20,134 INFO L168 Benchmark]: Witness Printer took 37.78 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. [2019-11-25 08:49:20,137 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 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 319.85 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 159.4 MB). Free memory was 950.1 MB in the beginning and 1.2 GB in the end (delta: -201.5 MB). Peak memory consumption was 22.9 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 28.96 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 20.87 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. * RCFGBuilder took 338.17 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: 20.4 MB). Peak memory consumption was 20.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 222.14 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: 12.9 MB). Peak memory consumption was 12.9 MB. Max. memory is 11.5 GB. * Witness Printer took 37.78 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: - CounterExampleResult [Line: 47]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L38] int n = __VERIFIER_nondet_int(); [L39] COND FALSE !(n < 0) [L42] CALL, EXPR isEven(n) VAL [\old(n)=0] [L27] COND TRUE n == 0 [L28] return 1; VAL [\old(n)=0, \result=1, n=0] [L42] RET, EXPR isEven(n) [L42] int result = isEven(n); [L43] int mod = n % 2; [L44] COND FALSE !(result < 0 || result == mod) [L47] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 24 locations, 1 error locations. Result: UNSAFE, OverallTime: 0.1s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=24occurred 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: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 10 NumberOfCodeBlocks, 10 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 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 incorrect! Received shutdown request...