./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-benchs/filter2_iterated.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_69dcee67-1bd5-40d5-911f-441906160228/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_69dcee67-1bd5-40d5-911f-441906160228/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_69dcee67-1bd5-40d5-911f-441906160228/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_69dcee67-1bd5-40d5-911f-441906160228/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-benchs/filter2_iterated.c -s /tmp/vcloud-vcloud-master/worker/run_dir_69dcee67-1bd5-40d5-911f-441906160228/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_69dcee67-1bd5-40d5-911f-441906160228/bin/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 4d18c017f419dc210dcbafa8af1edf74b131b258 .................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_69dcee67-1bd5-40d5-911f-441906160228/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_69dcee67-1bd5-40d5-911f-441906160228/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_69dcee67-1bd5-40d5-911f-441906160228/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_69dcee67-1bd5-40d5-911f-441906160228/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-benchs/filter2_iterated.c -s /tmp/vcloud-vcloud-master/worker/run_dir_69dcee67-1bd5-40d5-911f-441906160228/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_69dcee67-1bd5-40d5-911f-441906160228/bin/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 4d18c017f419dc210dcbafa8af1edf74b131b258 ...................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000)Received EOF on stdin. stderr output: (error "out of memory") --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-28 07:27:01,884 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 07:27:01,886 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 07:27:01,922 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 07:27:01,923 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 07:27:01,924 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 07:27:01,926 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 07:27:01,928 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 07:27:01,930 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 07:27:01,931 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 07:27:01,932 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 07:27:01,933 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 07:27:01,934 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 07:27:01,935 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 07:27:01,936 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 07:27:01,937 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 07:27:01,938 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 07:27:01,939 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 07:27:01,941 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 07:27:01,943 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 07:27:01,945 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 07:27:01,946 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 07:27:01,948 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 07:27:01,949 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 07:27:01,952 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 07:27:01,952 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 07:27:01,952 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 07:27:01,953 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 07:27:01,954 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 07:27:01,955 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 07:27:01,955 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 07:27:01,956 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 07:27:01,957 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 07:27:01,958 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 07:27:01,959 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 07:27:01,960 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 07:27:01,960 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 07:27:01,961 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 07:27:01,961 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 07:27:01,962 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 07:27:01,963 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 07:27:01,964 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_69dcee67-1bd5-40d5-911f-441906160228/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-11-28 07:27:01,994 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 07:27:01,995 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 07:27:01,996 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-28 07:27:01,996 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-28 07:27:01,996 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-28 07:27:01,997 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-28 07:27:01,997 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-28 07:27:01,997 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-28 07:27:01,999 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-28 07:27:02,000 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-28 07:27:02,001 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-28 07:27:02,001 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-28 07:27:02,001 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-28 07:27:02,002 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-28 07:27:02,002 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-28 07:27:02,002 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 07:27:02,003 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 07:27:02,003 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 07:27:02,003 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 07:27:02,003 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 07:27:02,003 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 07:27:02,004 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 07:27:02,004 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 07:27:02,004 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-28 07:27:02,004 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 07:27:02,004 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 07:27:02,004 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 07:27:02,005 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 07:27:02,005 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 07:27:02,005 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 07:27:02,005 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 07:27:02,005 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 07:27:02,006 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 07:27:02,006 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 07:27:02,006 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 07:27:02,006 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-28 07:27:02,006 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 07:27:02,007 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 07:27:02,007 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 07:27:02,007 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-28 07:27:02,007 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_69dcee67-1bd5-40d5-911f-441906160228/bin/utaipan/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_69dcee67-1bd5-40d5-911f-441906160228/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4d18c017f419dc210dcbafa8af1edf74b131b258 [2020-11-28 07:27:02,245 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 07:27:02,273 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 07:27:02,277 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 07:27:02,278 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 07:27:02,279 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 07:27:02,279 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_69dcee67-1bd5-40d5-911f-441906160228/bin/utaipan/../../sv-benchmarks/c/float-benchs/filter2_iterated.c [2020-11-28 07:27:02,375 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_69dcee67-1bd5-40d5-911f-441906160228/bin/utaipan/data/50ecc5e44/ccbb9d94df3a40c7b4c2988889ce4b05/FLAGf8d9b3340 [2020-11-28 07:27:02,800 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 07:27:02,800 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_69dcee67-1bd5-40d5-911f-441906160228/sv-benchmarks/c/float-benchs/filter2_iterated.c [2020-11-28 07:27:02,807 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_69dcee67-1bd5-40d5-911f-441906160228/bin/utaipan/data/50ecc5e44/ccbb9d94df3a40c7b4c2988889ce4b05/FLAGf8d9b3340 [2020-11-28 07:27:03,186 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_69dcee67-1bd5-40d5-911f-441906160228/bin/utaipan/data/50ecc5e44/ccbb9d94df3a40c7b4c2988889ce4b05 [2020-11-28 07:27:03,189 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 07:27:03,190 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 07:27:03,192 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 07:27:03,192 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 07:27:03,195 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 07:27:03,195 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:27:03" (1/1) ... [2020-11-28 07:27:03,197 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@34be96d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:27:03, skipping insertion in model container [2020-11-28 07:27:03,197 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:27:03" (1/1) ... [2020-11-28 07:27:03,204 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 07:27:03,220 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 07:27:03,390 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:27:03,399 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 07:27:03,427 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:27:03,444 INFO L208 MainTranslator]: Completed translation [2020-11-28 07:27:03,444 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:27:03 WrapperNode [2020-11-28 07:27:03,445 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 07:27:03,446 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 07:27:03,446 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 07:27:03,462 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 07:27:03,470 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:27:03" (1/1) ... [2020-11-28 07:27:03,487 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:27:03" (1/1) ... [2020-11-28 07:27:03,530 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 07:27:03,532 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 07:27:03,533 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 07:27:03,533 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 07:27:03,546 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:27:03" (1/1) ... [2020-11-28 07:27:03,546 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:27:03" (1/1) ... [2020-11-28 07:27:03,552 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:27:03" (1/1) ... [2020-11-28 07:27:03,553 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:27:03" (1/1) ... [2020-11-28 07:27:03,573 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:27:03" (1/1) ... [2020-11-28 07:27:03,580 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:27:03" (1/1) ... [2020-11-28 07:27:03,587 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:27:03" (1/1) ... [2020-11-28 07:27:03,594 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 07:27:03,596 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 07:27:03,597 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 07:27:03,599 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 07:27:03,600 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:27:03" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_69dcee67-1bd5-40d5-911f-441906160228/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 [2020-11-28 07:27:03,672 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-28 07:27:03,672 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 07:27:03,673 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-11-28 07:27:03,673 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-11-28 07:27:03,673 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 07:27:03,673 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 07:27:03,674 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-11-28 07:27:05,414 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 07:27:05,414 INFO L298 CfgBuilder]: Removed 13 assume(true) statements. [2020-11-28 07:27:05,417 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:27:05 BoogieIcfgContainer [2020-11-28 07:27:05,417 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 07:27:05,419 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 07:27:05,419 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 07:27:05,423 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 07:27:05,423 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 07:27:03" (1/3) ... [2020-11-28 07:27:05,424 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4511089d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:27:05, skipping insertion in model container [2020-11-28 07:27:05,425 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:27:03" (2/3) ... [2020-11-28 07:27:05,425 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4511089d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:27:05, skipping insertion in model container [2020-11-28 07:27:05,425 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:27:05" (3/3) ... [2020-11-28 07:27:05,427 INFO L111 eAbstractionObserver]: Analyzing ICFG filter2_iterated.c [2020-11-28 07:27:05,442 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 07:27:05,446 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-28 07:27:05,458 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-28 07:27:05,492 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 07:27:05,493 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 07:27:05,493 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 07:27:05,493 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 07:27:05,493 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 07:27:05,494 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 07:27:05,494 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 07:27:05,494 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 07:27:05,508 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states. [2020-11-28 07:27:05,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-11-28 07:27:05,515 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:27:05,516 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-11-28 07:27:05,517 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:27:05,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:27:05,523 INFO L82 PathProgramCache]: Analyzing trace with hash 2693043, now seen corresponding path program 1 times [2020-11-28 07:27:05,532 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:27:05,533 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1212843188] [2020-11-28 07:27:05,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:27:05,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 07:27:05,805 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 07:27:06,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 07:27:06,059 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 07:27:06,108 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2020-11-28 07:27:06,108 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-28 07:27:06,109 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-28 07:27:06,181 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 07:27:06 BoogieIcfgContainer [2020-11-28 07:27:06,182 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 07:27:06,184 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 07:27:06,184 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 07:27:06,185 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 07:27:06,185 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:27:05" (3/4) ... [2020-11-28 07:27:06,198 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-28 07:27:06,202 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 07:27:06,205 INFO L168 Benchmark]: Toolchain (without parser) took 3013.36 ms. Allocated memory was 83.9 MB in the beginning and 134.2 MB in the end (delta: 50.3 MB). Free memory was 48.2 MB in the beginning and 107.1 MB in the end (delta: -58.9 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:27:06,206 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 83.9 MB. Free memory was 49.1 MB in the beginning and 49.0 MB in the end (delta: 61.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:27:06,208 INFO L168 Benchmark]: CACSL2BoogieTranslator took 253.23 ms. Allocated memory is still 83.9 MB. Free memory was 48.0 MB in the beginning and 37.0 MB in the end (delta: 11.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-28 07:27:06,210 INFO L168 Benchmark]: Boogie Procedure Inliner took 85.54 ms. Allocated memory was 83.9 MB in the beginning and 111.1 MB in the end (delta: 27.3 MB). Free memory was 37.0 MB in the beginning and 89.6 MB in the end (delta: -52.6 MB). Peak memory consumption was 6.4 MB. Max. memory is 16.1 GB. [2020-11-28 07:27:06,212 INFO L168 Benchmark]: Boogie Preprocessor took 63.90 ms. Allocated memory is still 111.1 MB. Free memory was 89.5 MB in the beginning and 89.8 MB in the end (delta: -219.5 kB). Peak memory consumption was 2.3 MB. Max. memory is 16.1 GB. [2020-11-28 07:27:06,213 INFO L168 Benchmark]: RCFGBuilder took 1820.63 ms. Allocated memory is still 111.1 MB. Free memory was 89.8 MB in the beginning and 74.7 MB in the end (delta: 15.1 MB). Peak memory consumption was 61.0 MB. Max. memory is 16.1 GB. [2020-11-28 07:27:06,215 INFO L168 Benchmark]: TraceAbstraction took 762.80 ms. Allocated memory was 111.1 MB in the beginning and 134.2 MB in the end (delta: 23.1 MB). Free memory was 74.2 MB in the beginning and 108.2 MB in the end (delta: -34.0 MB). Peak memory consumption was 45.7 MB. Max. memory is 16.1 GB. [2020-11-28 07:27:06,216 INFO L168 Benchmark]: Witness Printer took 18.58 ms. Allocated memory is still 134.2 MB. Free memory was 108.2 MB in the beginning and 107.1 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:27:06,223 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 83.9 MB. Free memory was 49.1 MB in the beginning and 49.0 MB in the end (delta: 61.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 253.23 ms. Allocated memory is still 83.9 MB. Free memory was 48.0 MB in the beginning and 37.0 MB in the end (delta: 11.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 85.54 ms. Allocated memory was 83.9 MB in the beginning and 111.1 MB in the end (delta: 27.3 MB). Free memory was 37.0 MB in the beginning and 89.6 MB in the end (delta: -52.6 MB). Peak memory consumption was 6.4 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 63.90 ms. Allocated memory is still 111.1 MB. Free memory was 89.5 MB in the beginning and 89.8 MB in the end (delta: -219.5 kB). Peak memory consumption was 2.3 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1820.63 ms. Allocated memory is still 111.1 MB. Free memory was 89.8 MB in the beginning and 74.7 MB in the end (delta: 15.1 MB). Peak memory consumption was 61.0 MB. Max. memory is 16.1 GB. * TraceAbstraction took 762.80 ms. Allocated memory was 111.1 MB in the beginning and 134.2 MB in the end (delta: 23.1 MB). Free memory was 74.2 MB in the beginning and 108.2 MB in the end (delta: -34.0 MB). Peak memory consumption was 45.7 MB. Max. memory is 16.1 GB. * Witness Printer took 18.58 ms. Allocated memory is still 134.2 MB. Free memory was 108.2 MB in the beginning and 107.1 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 3]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 63, overapproximation of to_real at line 58, overapproximation of someBinaryArithmeticDOUBLEoperation at line 62. Possible FailurePath: [L13] BOOLEAN INIT1, INIT2; [L14] float X, P; [L18] static float E[2], S[2]; [L38] static float E2[2], S2[2]; [L58] X = 0 [L59] INIT1 = TRUE [L60] INIT2 = TRUE VAL [E={9:0}, E2={6:0}, INIT1=1, INIT2=1, P=0, S={10:0}, S2={11:0}] [L61] COND TRUE \read(TRUE) [L62] X = 0.98*X + 85. [L63] COND FALSE !(X >= -400. && X <= 400.) [L68] COND TRUE X >= -800. && X <= 800. [L39] COND TRUE \read(INIT2) [L40] S2[0] = 0.5*X [L41] P = X [L42] E2[0] = 0.8*X [L43] E2[1] = 0. [L44] S2[1] = 0. [L70] X = X - 50. [L71] INIT2 = FALSE [L9] COND TRUE !(cond) VAL [E={9:0}, E2={6:0}, INIT1=1, INIT2=0, P=61, S={10:0}, S2={11:0}, X=61] [L3] __assert_fail("0", "filter2_iterated.c", 3, "reach_error") VAL [E={9:0}, E2={6:0}, INIT1=1, INIT2=0, P=61, S={10:0}, S2={11:0}, X=61] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 6 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.6s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=6occurred 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, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 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, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.0-a4ecdab [2020-11-28 07:27:08,757 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 07:27:08,759 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 07:27:08,808 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 07:27:08,809 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 07:27:08,814 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 07:27:08,817 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 07:27:08,822 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 07:27:08,826 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 07:27:08,832 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 07:27:08,834 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 07:27:08,844 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 07:27:08,845 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 07:27:08,851 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 07:27:08,852 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 07:27:08,854 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 07:27:08,855 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 07:27:08,858 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 07:27:08,862 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 07:27:08,872 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 07:27:08,874 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 07:27:08,876 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 07:27:08,884 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 07:27:08,886 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 07:27:08,890 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 07:27:08,894 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 07:27:08,894 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 07:27:08,895 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 07:27:08,897 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 07:27:08,899 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 07:27:08,899 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 07:27:08,900 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 07:27:08,902 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 07:27:08,903 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 07:27:08,904 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 07:27:08,905 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 07:27:08,905 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 07:27:08,906 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 07:27:08,906 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 07:27:08,908 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 07:27:08,909 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 07:27:08,910 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_69dcee67-1bd5-40d5-911f-441906160228/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2020-11-28 07:27:08,952 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 07:27:08,952 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 07:27:08,954 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-28 07:27:08,955 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-28 07:27:08,955 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-28 07:27:08,955 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-28 07:27:08,956 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-28 07:27:08,956 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-28 07:27:08,956 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-28 07:27:08,958 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 07:27:08,959 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 07:27:08,959 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 07:27:08,960 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 07:27:08,960 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 07:27:08,960 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 07:27:08,960 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 07:27:08,960 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-28 07:27:08,961 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-11-28 07:27:08,961 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-11-28 07:27:08,961 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 07:27:08,961 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 07:27:08,962 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 07:27:08,962 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 07:27:08,962 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 07:27:08,962 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-28 07:27:08,963 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 07:27:08,963 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 07:27:08,963 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 07:27:08,963 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 07:27:08,963 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 07:27:08,964 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 07:27:08,964 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2020-11-28 07:27:08,964 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-11-28 07:27:08,964 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 07:27:08,965 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 07:27:08,965 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-28 07:27:08,965 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_69dcee67-1bd5-40d5-911f-441906160228/bin/utaipan/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_69dcee67-1bd5-40d5-911f-441906160228/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4d18c017f419dc210dcbafa8af1edf74b131b258 [2020-11-28 07:27:09,412 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 07:27:09,439 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 07:27:09,444 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 07:27:09,445 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 07:27:09,446 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 07:27:09,447 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_69dcee67-1bd5-40d5-911f-441906160228/bin/utaipan/../../sv-benchmarks/c/float-benchs/filter2_iterated.c [2020-11-28 07:27:09,521 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_69dcee67-1bd5-40d5-911f-441906160228/bin/utaipan/data/ee2969297/58ca6eb70cc34addbb89e9e11cdcc792/FLAGc05aeffb1 [2020-11-28 07:27:10,147 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 07:27:10,150 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_69dcee67-1bd5-40d5-911f-441906160228/sv-benchmarks/c/float-benchs/filter2_iterated.c [2020-11-28 07:27:10,159 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_69dcee67-1bd5-40d5-911f-441906160228/bin/utaipan/data/ee2969297/58ca6eb70cc34addbb89e9e11cdcc792/FLAGc05aeffb1 [2020-11-28 07:27:10,487 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_69dcee67-1bd5-40d5-911f-441906160228/bin/utaipan/data/ee2969297/58ca6eb70cc34addbb89e9e11cdcc792 [2020-11-28 07:27:10,491 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 07:27:10,494 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 07:27:10,506 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 07:27:10,506 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 07:27:10,510 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 07:27:10,511 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:27:10" (1/1) ... [2020-11-28 07:27:10,514 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4803cdcb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:27:10, skipping insertion in model container [2020-11-28 07:27:10,515 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:27:10" (1/1) ... [2020-11-28 07:27:10,523 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 07:27:10,549 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 07:27:10,822 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:27:10,856 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 07:27:10,950 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:27:10,981 INFO L208 MainTranslator]: Completed translation [2020-11-28 07:27:10,982 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:27:10 WrapperNode [2020-11-28 07:27:10,982 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 07:27:10,984 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 07:27:10,984 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 07:27:10,984 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 07:27:10,992 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:27:10" (1/1) ... [2020-11-28 07:27:11,018 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:27:10" (1/1) ... [2020-11-28 07:27:11,044 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 07:27:11,045 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 07:27:11,045 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 07:27:11,045 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 07:27:11,055 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:27:10" (1/1) ... [2020-11-28 07:27:11,055 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:27:10" (1/1) ... [2020-11-28 07:27:11,070 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:27:10" (1/1) ... [2020-11-28 07:27:11,071 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:27:10" (1/1) ... [2020-11-28 07:27:11,091 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:27:10" (1/1) ... [2020-11-28 07:27:11,111 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:27:10" (1/1) ... [2020-11-28 07:27:11,114 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:27:10" (1/1) ... [2020-11-28 07:27:11,118 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 07:27:11,119 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 07:27:11,119 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 07:27:11,119 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 07:27:11,120 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:27:10" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_69dcee67-1bd5-40d5-911f-441906160228/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 [2020-11-28 07:27:11,209 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4 [2020-11-28 07:27:11,210 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-11-28 07:27:11,211 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 07:27:11,211 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2020-11-28 07:27:11,211 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 07:27:11,212 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 07:27:11,212 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2020-11-28 07:27:23,895 WARN L195 Executor]: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000) stderr output: (error "out of memory") [2020-11-28 07:27:23,896 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000)Received EOF on stdin. stderr output: (error "out of memory") at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:209) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseCheckSatResult(Executor.java:226) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.checkSat(Scriptor.java:153) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.logic.Util.checkSat(Util.java:61) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Statements2TransFormula.constructTransFormula(Statements2TransFormula.java:214) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Statements2TransFormula.getTransFormula(Statements2TransFormula.java:174) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Statements2TransFormula.statementSequence(Statements2TransFormula.java:722) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.util.TransFormulaAdder.addTransitionFormulas(TransFormulaAdder.java:119) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.CfgBuilder$ProcedureCfgBuilder.buildProcedureCfgFromImplementation(CfgBuilder.java:716) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.CfgBuilder$ProcedureCfgBuilder.access$1(CfgBuilder.java:630) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.CfgBuilder.createIcfg(CfgBuilder.java:264) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.RCFGBuilderObserver.process(RCFGBuilderObserver.java:88) at de.uni_freiburg.informatik.ultimate.core.coreplugin.modelwalker.DFSTreeWalker.runObserver(DFSTreeWalker.java:65) at de.uni_freiburg.informatik.ultimate.core.coreplugin.modelwalker.BaseWalker.runObserver(BaseWalker.java:93) at de.uni_freiburg.informatik.ultimate.core.coreplugin.modelwalker.BaseWalker.run(BaseWalker.java:86) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: EOF at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1461) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:654) at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:419) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:206) ... 26 more [2020-11-28 07:27:23,902 INFO L168 Benchmark]: Toolchain (without parser) took 13405.57 ms. Allocated memory was 48.2 MB in the beginning and 58.7 MB in the end (delta: 10.5 MB). Free memory was 23.2 MB in the beginning and 28.5 MB in the end (delta: -5.3 MB). Peak memory consumption was 5.5 MB. Max. memory is 16.1 GB. [2020-11-28 07:27:23,903 INFO L168 Benchmark]: CDTParser took 0.73 ms. Allocated memory is still 48.2 MB. Free memory was 30.0 MB in the beginning and 30.0 MB in the end (delta: 20.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:27:23,905 INFO L168 Benchmark]: CACSL2BoogieTranslator took 476.64 ms. Allocated memory was 48.2 MB in the beginning and 58.7 MB in the end (delta: 10.5 MB). Free memory was 23.0 MB in the beginning and 39.5 MB in the end (delta: -16.5 MB). Peak memory consumption was 3.5 MB. Max. memory is 16.1 GB. [2020-11-28 07:27:23,905 INFO L168 Benchmark]: Boogie Procedure Inliner took 60.60 ms. Allocated memory is still 58.7 MB. Free memory was 39.5 MB in the beginning and 37.5 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 07:27:23,906 INFO L168 Benchmark]: Boogie Preprocessor took 73.00 ms. Allocated memory is still 58.7 MB. Free memory was 37.4 MB in the beginning and 35.6 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 07:27:23,907 INFO L168 Benchmark]: RCFGBuilder took 12780.42 ms. Allocated memory is still 58.7 MB. Free memory was 35.4 MB in the beginning and 28.5 MB in the end (delta: 6.9 MB). Peak memory consumption was 9.7 MB. Max. memory is 16.1 GB. [2020-11-28 07:27:23,910 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.73 ms. Allocated memory is still 48.2 MB. Free memory was 30.0 MB in the beginning and 30.0 MB in the end (delta: 20.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 476.64 ms. Allocated memory was 48.2 MB in the beginning and 58.7 MB in the end (delta: 10.5 MB). Free memory was 23.0 MB in the beginning and 39.5 MB in the end (delta: -16.5 MB). Peak memory consumption was 3.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 60.60 ms. Allocated memory is still 58.7 MB. Free memory was 39.5 MB in the beginning and 37.5 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 73.00 ms. Allocated memory is still 58.7 MB. Free memory was 37.4 MB in the beginning and 35.6 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 12780.42 ms. Allocated memory is still 58.7 MB. Free memory was 35.4 MB in the beginning and 28.5 MB in the end (delta: 6.9 MB). Peak memory consumption was 9.7 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: - ExceptionOrErrorResult: SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000)Received EOF on stdin. stderr output: (error "out of memory") de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000)Received EOF on stdin. stderr output: (error "out of memory") : de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:209) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...