./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loops/while_infinite_loop_2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cad46833 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_ceea97d4-456a-4cc8-bb1f-ded20f830e25/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_ceea97d4-456a-4cc8-bb1f-ded20f830e25/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_ceea97d4-456a-4cc8-bb1f-ded20f830e25/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_ceea97d4-456a-4cc8-bb1f-ded20f830e25/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/loops/while_infinite_loop_2.c -s /tmp/vcloud-vcloud-master/worker/working_dir_ceea97d4-456a-4cc8-bb1f-ded20f830e25/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_ceea97d4-456a-4cc8-bb1f-ded20f830e25/bin/utaipan --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash ac6fc95614e4af693eaa4f1b073012c44a5dd7d3 ......................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-cad4683 [2019-10-22 11:26:23,917 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-22 11:26:23,919 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-22 11:26:23,932 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-22 11:26:23,933 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-22 11:26:23,933 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-22 11:26:23,935 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-22 11:26:23,937 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-22 11:26:23,939 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-22 11:26:23,940 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-22 11:26:23,942 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-22 11:26:23,943 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-22 11:26:23,943 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-22 11:26:23,944 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-22 11:26:23,945 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-22 11:26:23,946 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-22 11:26:23,946 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-22 11:26:23,947 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-22 11:26:23,956 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-22 11:26:23,958 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-22 11:26:23,959 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-22 11:26:23,964 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-22 11:26:23,965 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-22 11:26:23,966 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-22 11:26:23,967 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-22 11:26:23,967 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-22 11:26:23,968 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-22 11:26:23,971 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-22 11:26:23,972 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-22 11:26:23,972 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-22 11:26:23,973 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-22 11:26:23,973 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-22 11:26:23,974 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-22 11:26:23,974 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-22 11:26:23,975 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-22 11:26:23,975 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-22 11:26:23,976 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-22 11:26:23,978 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-22 11:26:23,978 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-22 11:26:23,979 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-22 11:26:23,979 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-22 11:26:23,980 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_ceea97d4-456a-4cc8-bb1f-ded20f830e25/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2019-10-22 11:26:24,005 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-22 11:26:24,006 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-22 11:26:24,006 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-10-22 11:26:24,006 INFO L138 SettingsManager]: * User list type=DISABLED [2019-10-22 11:26:24,007 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-10-22 11:26:24,007 INFO L138 SettingsManager]: * Explicit value domain=true [2019-10-22 11:26:24,007 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-10-22 11:26:24,007 INFO L138 SettingsManager]: * Octagon Domain=false [2019-10-22 11:26:24,007 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-10-22 11:26:24,008 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-10-22 11:26:24,008 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-10-22 11:26:24,008 INFO L138 SettingsManager]: * Interval Domain=false [2019-10-22 11:26:24,009 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-22 11:26:24,009 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-22 11:26:24,009 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-22 11:26:24,009 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-22 11:26:24,009 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-22 11:26:24,010 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-22 11:26:24,010 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-22 11:26:24,010 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-22 11:26:24,010 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-22 11:26:24,010 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-22 11:26:24,010 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-22 11:26:24,011 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-22 11:26:24,011 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-22 11:26:24,011 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-22 11:26:24,011 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-22 11:26:24,011 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-22 11:26:24,012 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-22 11:26:24,012 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-22 11:26:24,012 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-22 11:26:24,015 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-10-22 11:26:24,015 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-22 11:26:24,015 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-22 11:26:24,015 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-22 11:26:24,015 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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/working_dir_ceea97d4-456a-4cc8-bb1f-ded20f830e25/bin/utaipan 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 -> Taipan 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 -> ac6fc95614e4af693eaa4f1b073012c44a5dd7d3 [2019-10-22 11:26:24,058 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-22 11:26:24,072 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-22 11:26:24,075 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-22 11:26:24,077 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-22 11:26:24,077 INFO L275 PluginConnector]: CDTParser initialized [2019-10-22 11:26:24,078 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_ceea97d4-456a-4cc8-bb1f-ded20f830e25/bin/utaipan/../../sv-benchmarks/c/loops/while_infinite_loop_2.c [2019-10-22 11:26:24,129 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_ceea97d4-456a-4cc8-bb1f-ded20f830e25/bin/utaipan/data/f19ff9663/834d9b4ba5974100abb29be0383319a3/FLAG80dd86146 [2019-10-22 11:26:24,534 INFO L306 CDTParser]: Found 1 translation units. [2019-10-22 11:26:24,535 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_ceea97d4-456a-4cc8-bb1f-ded20f830e25/sv-benchmarks/c/loops/while_infinite_loop_2.c [2019-10-22 11:26:24,541 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_ceea97d4-456a-4cc8-bb1f-ded20f830e25/bin/utaipan/data/f19ff9663/834d9b4ba5974100abb29be0383319a3/FLAG80dd86146 [2019-10-22 11:26:24,554 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_ceea97d4-456a-4cc8-bb1f-ded20f830e25/bin/utaipan/data/f19ff9663/834d9b4ba5974100abb29be0383319a3 [2019-10-22 11:26:24,557 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-22 11:26:24,558 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-10-22 11:26:24,559 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-22 11:26:24,560 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-22 11:26:24,563 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-22 11:26:24,564 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 11:26:24" (1/1) ... [2019-10-22 11:26:24,567 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d9eac59 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:24, skipping insertion in model container [2019-10-22 11:26:24,567 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 11:26:24" (1/1) ... [2019-10-22 11:26:24,574 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-22 11:26:24,589 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-22 11:26:24,765 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 11:26:24,771 INFO L188 MainTranslator]: Completed pre-run [2019-10-22 11:26:24,899 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 11:26:24,916 INFO L192 MainTranslator]: Completed translation [2019-10-22 11:26:24,916 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:24 WrapperNode [2019-10-22 11:26:24,917 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-22 11:26:24,917 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-10-22 11:26:24,918 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-10-22 11:26:24,918 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-10-22 11:26:24,927 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:24" (1/1) ... [2019-10-22 11:26:24,933 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:24" (1/1) ... [2019-10-22 11:26:24,953 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-10-22 11:26:24,953 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-22 11:26:24,954 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-22 11:26:24,954 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-22 11:26:24,963 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:24" (1/1) ... [2019-10-22 11:26:24,964 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:24" (1/1) ... [2019-10-22 11:26:24,965 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:24" (1/1) ... [2019-10-22 11:26:24,966 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:24" (1/1) ... [2019-10-22 11:26:24,968 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:24" (1/1) ... [2019-10-22 11:26:24,974 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:24" (1/1) ... [2019-10-22 11:26:24,976 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:24" (1/1) ... [2019-10-22 11:26:24,977 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-22 11:26:24,978 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-22 11:26:24,979 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-22 11:26:24,979 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-22 11:26:24,980 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:24" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ceea97d4-456a-4cc8-bb1f-ded20f830e25/bin/utaipan/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 [2019-10-22 11:26:25,053 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-22 11:26:25,054 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-22 11:26:25,217 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-22 11:26:25,217 INFO L284 CfgBuilder]: Removed 9 assume(true) statements. [2019-10-22 11:26:25,218 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:26:25 BoogieIcfgContainer [2019-10-22 11:26:25,218 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-22 11:26:25,221 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-22 11:26:25,221 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-22 11:26:25,224 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-22 11:26:25,224 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 11:26:24" (1/3) ... [2019-10-22 11:26:25,225 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7bbaae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 11:26:25, skipping insertion in model container [2019-10-22 11:26:25,226 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:24" (2/3) ... [2019-10-22 11:26:25,226 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7bbaae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 11:26:25, skipping insertion in model container [2019-10-22 11:26:25,226 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:26:25" (3/3) ... [2019-10-22 11:26:25,228 INFO L109 eAbstractionObserver]: Analyzing ICFG while_infinite_loop_2.c [2019-10-22 11:26:25,242 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-22 11:26:25,253 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2019-10-22 11:26:25,269 INFO L249 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2019-10-22 11:26:25,296 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-22 11:26:25,296 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-22 11:26:25,297 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-22 11:26:25,297 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-22 11:26:25,297 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-22 11:26:25,297 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-22 11:26:25,297 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-22 11:26:25,297 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-22 11:26:25,314 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states. [2019-10-22 11:26:25,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-10-22 11:26:25,320 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:26:25,321 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-10-22 11:26:25,323 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:26:25,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:26:25,330 INFO L82 PathProgramCache]: Analyzing trace with hash 963340, now seen corresponding path program 1 times [2019-10-22 11:26:25,340 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:26:25,340 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059387630] [2019-10-22 11:26:25,341 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:26:25,341 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:26:25,341 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:26:25,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:26:25,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:26:25,600 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059387630] [2019-10-22 11:26:25,601 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:26:25,601 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-22 11:26:25,601 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831654458] [2019-10-22 11:26:25,611 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-22 11:26:25,618 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:26:25,634 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-22 11:26:25,635 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-22 11:26:25,637 INFO L87 Difference]: Start difference. First operand 12 states. Second operand 4 states. [2019-10-22 11:26:25,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:26:25,677 INFO L93 Difference]: Finished difference Result 15 states and 23 transitions. [2019-10-22 11:26:25,678 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-22 11:26:25,679 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 4 [2019-10-22 11:26:25,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:26:25,686 INFO L225 Difference]: With dead ends: 15 [2019-10-22 11:26:25,687 INFO L226 Difference]: Without dead ends: 0 [2019-10-22 11:26:25,696 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-22 11:26:25,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-22 11:26:25,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-22 11:26:25,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-22 11:26:25,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-22 11:26:25,728 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 4 [2019-10-22 11:26:25,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:26:25,728 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-22 11:26:25,728 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-22 11:26:25,728 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-22 11:26:25,729 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-22 11:26:25,734 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-10-22 11:26:25,756 INFO L443 ceAbstractionStarter]: For program point L4-3(lines 4 6) no Hoare annotation was computed. [2019-10-22 11:26:25,756 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-10-22 11:26:25,757 INFO L439 ceAbstractionStarter]: At program point L4-5(lines 1 18) the Hoare annotation is: false [2019-10-22 11:26:25,757 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2019-10-22 11:26:25,757 INFO L443 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2019-10-22 11:26:25,757 INFO L443 ceAbstractionStarter]: For program point L5-1(line 5) no Hoare annotation was computed. [2019-10-22 11:26:25,757 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-10-22 11:26:25,757 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-10-22 11:26:25,758 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2019-10-22 11:26:25,758 INFO L443 ceAbstractionStarter]: For program point L12-2(lines 12 15) no Hoare annotation was computed. [2019-10-22 11:26:25,758 INFO L443 ceAbstractionStarter]: For program point L4(lines 4 6) no Hoare annotation was computed. [2019-10-22 11:26:25,758 INFO L439 ceAbstractionStarter]: At program point L4-2(lines 3 15) the Hoare annotation is: (= ULTIMATE.start_main_~x~0 0) [2019-10-22 11:26:25,773 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.10 11:26:25 BoogieIcfgContainer [2019-10-22 11:26:25,774 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-22 11:26:25,774 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-10-22 11:26:25,775 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-10-22 11:26:25,775 INFO L275 PluginConnector]: Witness Printer initialized [2019-10-22 11:26:25,776 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:26:25" (3/4) ... [2019-10-22 11:26:25,781 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-10-22 11:26:25,794 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2019-10-22 11:26:25,797 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2019-10-22 11:26:25,844 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_ceea97d4-456a-4cc8-bb1f-ded20f830e25/bin/utaipan/witness.graphml [2019-10-22 11:26:25,846 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-10-22 11:26:25,848 INFO L168 Benchmark]: Toolchain (without parser) took 1289.33 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 168.8 MB). Free memory was 948.5 MB in the beginning and 1.1 GB in the end (delta: -166.2 MB). Peak memory consumption was 2.6 MB. Max. memory is 11.5 GB. [2019-10-22 11:26:25,850 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 967.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 11:26:25,850 INFO L168 Benchmark]: CACSL2BoogieTranslator took 357.60 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 168.8 MB). Free memory was 948.5 MB in the beginning and 1.2 GB in the end (delta: -211.1 MB). Peak memory consumption was 22.7 MB. Max. memory is 11.5 GB. [2019-10-22 11:26:25,852 INFO L168 Benchmark]: Boogie Procedure Inliner took 35.77 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. [2019-10-22 11:26:25,852 INFO L168 Benchmark]: Boogie Preprocessor took 24.20 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. [2019-10-22 11:26:25,853 INFO L168 Benchmark]: RCFGBuilder took 240.65 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: 16.9 MB). Peak memory consumption was 16.9 MB. Max. memory is 11.5 GB. [2019-10-22 11:26:25,854 INFO L168 Benchmark]: TraceAbstraction took 553.54 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: 21.0 MB). Peak memory consumption was 21.0 MB. Max. memory is 11.5 GB. [2019-10-22 11:26:25,856 INFO L168 Benchmark]: Witness Printer took 71.58 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: 7.0 MB). Peak memory consumption was 7.0 MB. Max. memory is 11.5 GB. [2019-10-22 11:26:25,859 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 967.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 357.60 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 168.8 MB). Free memory was 948.5 MB in the beginning and 1.2 GB in the end (delta: -211.1 MB). Peak memory consumption was 22.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 35.77 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 24.20 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 240.65 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: 16.9 MB). Peak memory consumption was 16.9 MB. Max. memory is 11.5 GB. * TraceAbstraction took 553.54 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: 21.0 MB). Peak memory consumption was 21.0 MB. Max. memory is 11.5 GB. * Witness Printer took 71.58 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: 7.0 MB). Peak memory consumption was 7.0 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 5]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 5]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - InvariantResult [Line: 1]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 3]: Loop Invariant Derived loop invariant: x == 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 12 locations, 2 error locations. Result: SAFE, OverallTime: 0.4s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 1 SDtfs, 3 SDslu, 1 SDs, 0 SdLazy, 3 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=12occurred 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, 2 LocationsWithAnnotation, 2 PreInvPairs, 4 NumberOfFragments, 4 HoareAnnotationTreeSize, 2 FomulaSimplifications, 9 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 3 ConstructedInterpolants, 0 QuantifiedInterpolants, 24 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...