./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_f93c3030-1d4d-4d81-8f0f-7fc4f9a2d521/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_f93c3030-1d4d-4d81-8f0f-7fc4f9a2d521/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_f93c3030-1d4d-4d81-8f0f-7fc4f9a2d521/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_f93c3030-1d4d-4d81-8f0f-7fc4f9a2d521/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-benchs/filter2_iterated.c -s /tmp/vcloud-vcloud-master/worker/run_dir_f93c3030-1d4d-4d81-8f0f-7fc4f9a2d521/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_f93c3030-1d4d-4d81-8f0f-7fc4f9a2d521/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_f93c3030-1d4d-4d81-8f0f-7fc4f9a2d521/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_f93c3030-1d4d-4d81-8f0f-7fc4f9a2d521/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_f93c3030-1d4d-4d81-8f0f-7fc4f9a2d521/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_f93c3030-1d4d-4d81-8f0f-7fc4f9a2d521/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-benchs/filter2_iterated.c -s /tmp/vcloud-vcloud-master/worker/run_dir_f93c3030-1d4d-4d81-8f0f-7fc4f9a2d521/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_f93c3030-1d4d-4d81-8f0f-7fc4f9a2d521/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 [2020-11-22 13:02:27,328 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-22 13:02:27,330 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-22 13:02:27,394 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-22 13:02:27,394 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-22 13:02:27,395 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-22 13:02:27,397 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-22 13:02:27,399 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-22 13:02:27,402 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-22 13:02:27,403 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-22 13:02:27,404 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-22 13:02:27,405 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-22 13:02:27,406 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-22 13:02:27,407 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-22 13:02:27,408 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-22 13:02:27,409 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-22 13:02:27,410 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-22 13:02:27,411 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-22 13:02:27,413 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-22 13:02:27,415 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-22 13:02:27,417 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-22 13:02:27,423 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-22 13:02:27,424 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-22 13:02:27,425 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-22 13:02:27,428 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-22 13:02:27,428 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-22 13:02:27,429 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-22 13:02:27,429 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-22 13:02:27,430 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-22 13:02:27,431 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-22 13:02:27,431 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-22 13:02:27,432 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-22 13:02:27,433 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-22 13:02:27,434 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-22 13:02:27,435 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-22 13:02:27,435 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-22 13:02:27,436 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-22 13:02:27,436 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-22 13:02:27,437 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-22 13:02:27,438 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-22 13:02:27,438 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-22 13:02:27,445 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_f93c3030-1d4d-4d81-8f0f-7fc4f9a2d521/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-11-22 13:02:27,479 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-22 13:02:27,480 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-22 13:02:27,481 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-22 13:02:27,481 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-22 13:02:27,482 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-22 13:02:27,482 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-22 13:02:27,482 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-22 13:02:27,482 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-22 13:02:27,482 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-22 13:02:27,482 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-22 13:02:27,483 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-22 13:02:27,484 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-22 13:02:27,484 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-22 13:02:27,484 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-22 13:02:27,484 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-22 13:02:27,485 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-22 13:02:27,485 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-22 13:02:27,485 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-22 13:02:27,485 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-22 13:02:27,485 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-22 13:02:27,486 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-22 13:02:27,486 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-22 13:02:27,486 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-22 13:02:27,486 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-22 13:02:27,486 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-22 13:02:27,486 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-22 13:02:27,487 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-22 13:02:27,487 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-22 13:02:27,487 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-22 13:02:27,488 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-22 13:02:27,489 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-22 13:02:27,489 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-22 13:02:27,489 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-22 13:02:27,489 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-22 13:02:27,489 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-22 13:02:27,490 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-22 13:02:27,490 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-22 13:02:27,490 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-22 13:02:27,490 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-22 13:02:27,490 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-22 13:02:27,491 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_f93c3030-1d4d-4d81-8f0f-7fc4f9a2d521/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_f93c3030-1d4d-4d81-8f0f-7fc4f9a2d521/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4d18c017f419dc210dcbafa8af1edf74b131b258 [2020-11-22 13:02:27,707 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-22 13:02:27,744 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-22 13:02:27,746 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-22 13:02:27,747 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-22 13:02:27,749 INFO L275 PluginConnector]: CDTParser initialized [2020-11-22 13:02:27,750 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_f93c3030-1d4d-4d81-8f0f-7fc4f9a2d521/bin/utaipan/../../sv-benchmarks/c/float-benchs/filter2_iterated.c [2020-11-22 13:02:27,814 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_f93c3030-1d4d-4d81-8f0f-7fc4f9a2d521/bin/utaipan/data/e8f022bfc/a8e04cb95ab64331aaad3b6d7d914674/FLAG526f8125c [2020-11-22 13:02:28,235 INFO L306 CDTParser]: Found 1 translation units. [2020-11-22 13:02:28,236 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_f93c3030-1d4d-4d81-8f0f-7fc4f9a2d521/sv-benchmarks/c/float-benchs/filter2_iterated.c [2020-11-22 13:02:28,242 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_f93c3030-1d4d-4d81-8f0f-7fc4f9a2d521/bin/utaipan/data/e8f022bfc/a8e04cb95ab64331aaad3b6d7d914674/FLAG526f8125c [2020-11-22 13:02:28,628 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_f93c3030-1d4d-4d81-8f0f-7fc4f9a2d521/bin/utaipan/data/e8f022bfc/a8e04cb95ab64331aaad3b6d7d914674 [2020-11-22 13:02:28,632 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-22 13:02:28,634 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-22 13:02:28,636 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-22 13:02:28,636 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-22 13:02:28,643 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-22 13:02:28,644 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:02:28" (1/1) ... [2020-11-22 13:02:28,646 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ab52bbc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:02:28, skipping insertion in model container [2020-11-22 13:02:28,646 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:02:28" (1/1) ... [2020-11-22 13:02:28,652 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-22 13:02:28,666 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-22 13:02:28,873 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 13:02:28,881 INFO L203 MainTranslator]: Completed pre-run [2020-11-22 13:02:28,909 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 13:02:28,926 INFO L208 MainTranslator]: Completed translation [2020-11-22 13:02:28,929 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:02:28 WrapperNode [2020-11-22 13:02:28,929 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-22 13:02:28,930 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-22 13:02:28,930 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-22 13:02:28,931 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-22 13:02:28,938 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:02:28" (1/1) ... [2020-11-22 13:02:28,948 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:02:28" (1/1) ... [2020-11-22 13:02:28,973 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-22 13:02:28,974 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-22 13:02:28,974 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-22 13:02:28,974 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-22 13:02:28,982 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:02:28" (1/1) ... [2020-11-22 13:02:28,983 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:02:28" (1/1) ... [2020-11-22 13:02:28,986 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:02:28" (1/1) ... [2020-11-22 13:02:28,986 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:02:28" (1/1) ... [2020-11-22 13:02:29,019 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:02:28" (1/1) ... [2020-11-22 13:02:29,022 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:02:28" (1/1) ... [2020-11-22 13:02:29,024 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:02:28" (1/1) ... [2020-11-22 13:02:29,027 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-22 13:02:29,028 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-22 13:02:29,028 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-22 13:02:29,028 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-22 13:02:29,045 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:02:28" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f93c3030-1d4d-4d81-8f0f-7fc4f9a2d521/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 [2020-11-22 13:02:29,114 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-22 13:02:29,114 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-22 13:02:29,115 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-11-22 13:02:29,115 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-11-22 13:02:29,115 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-22 13:02:29,115 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-22 13:02:29,116 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-11-22 13:02:30,698 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-22 13:02:30,698 INFO L298 CfgBuilder]: Removed 13 assume(true) statements. [2020-11-22 13:02:30,700 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:02:30 BoogieIcfgContainer [2020-11-22 13:02:30,701 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-22 13:02:30,702 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-22 13:02:30,703 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-22 13:02:30,708 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-22 13:02:30,709 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 01:02:28" (1/3) ... [2020-11-22 13:02:30,710 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34052bb3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:02:30, skipping insertion in model container [2020-11-22 13:02:30,710 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:02:28" (2/3) ... [2020-11-22 13:02:30,711 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34052bb3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:02:30, skipping insertion in model container [2020-11-22 13:02:30,711 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:02:30" (3/3) ... [2020-11-22 13:02:30,713 INFO L111 eAbstractionObserver]: Analyzing ICFG filter2_iterated.c [2020-11-22 13:02:30,728 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-22 13:02:30,733 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-22 13:02:30,746 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-22 13:02:30,781 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-22 13:02:30,782 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-22 13:02:30,782 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-22 13:02:30,782 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-22 13:02:30,782 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-22 13:02:30,783 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-22 13:02:30,783 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-22 13:02:30,784 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-22 13:02:30,795 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states. [2020-11-22 13:02:30,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-11-22 13:02:30,802 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:02:30,802 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-11-22 13:02:30,803 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:02:30,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:02:30,809 INFO L82 PathProgramCache]: Analyzing trace with hash 2693043, now seen corresponding path program 1 times [2020-11-22 13:02:30,818 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:02:30,820 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2124712658] [2020-11-22 13:02:30,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:02:31,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-22 13:02:31,147 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-22 13:02:31,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-22 13:02:31,306 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-22 13:02:31,359 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2020-11-22 13:02:31,359 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-22 13:02:31,360 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-22 13:02:31,399 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 01:02:31 BoogieIcfgContainer [2020-11-22 13:02:31,399 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-22 13:02:31,401 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-22 13:02:31,401 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-22 13:02:31,401 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-22 13:02:31,402 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:02:30" (3/4) ... [2020-11-22 13:02:31,407 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-22 13:02:31,407 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-22 13:02:31,411 INFO L168 Benchmark]: Toolchain (without parser) took 2774.38 ms. Allocated memory was 88.1 MB in the beginning and 107.0 MB in the end (delta: 18.9 MB). Free memory was 57.0 MB in the beginning and 77.9 MB in the end (delta: -20.9 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 13:02:31,412 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 69.2 MB. Free memory was 31.5 MB in the beginning and 31.4 MB in the end (delta: 29.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 13:02:31,414 INFO L168 Benchmark]: CACSL2BoogieTranslator took 293.96 ms. Allocated memory is still 88.1 MB. Free memory was 56.7 MB in the beginning and 64.9 MB in the end (delta: -8.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-22 13:02:31,414 INFO L168 Benchmark]: Boogie Procedure Inliner took 42.94 ms. Allocated memory is still 88.1 MB. Free memory was 64.9 MB in the beginning and 63.2 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-22 13:02:31,415 INFO L168 Benchmark]: Boogie Preprocessor took 53.28 ms. Allocated memory is still 88.1 MB. Free memory was 62.8 MB in the beginning and 61.6 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 13:02:31,416 INFO L168 Benchmark]: RCFGBuilder took 1672.96 ms. Allocated memory was 88.1 MB in the beginning and 107.0 MB in the end (delta: 18.9 MB). Free memory was 61.6 MB in the beginning and 83.4 MB in the end (delta: -21.8 MB). Peak memory consumption was 39.0 MB. Max. memory is 16.1 GB. [2020-11-22 13:02:31,417 INFO L168 Benchmark]: TraceAbstraction took 696.59 ms. Allocated memory is still 107.0 MB. Free memory was 82.7 MB in the beginning and 77.9 MB in the end (delta: 4.8 MB). Peak memory consumption was 41.9 MB. Max. memory is 16.1 GB. [2020-11-22 13:02:31,418 INFO L168 Benchmark]: Witness Printer took 6.78 ms. Allocated memory is still 107.0 MB. Free memory is still 77.9 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 13:02:31,428 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 69.2 MB. Free memory was 31.5 MB in the beginning and 31.4 MB in the end (delta: 29.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 293.96 ms. Allocated memory is still 88.1 MB. Free memory was 56.7 MB in the beginning and 64.9 MB in the end (delta: -8.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 42.94 ms. Allocated memory is still 88.1 MB. Free memory was 64.9 MB in the beginning and 63.2 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 53.28 ms. Allocated memory is still 88.1 MB. Free memory was 62.8 MB in the beginning and 61.6 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 1672.96 ms. Allocated memory was 88.1 MB in the beginning and 107.0 MB in the end (delta: 18.9 MB). Free memory was 61.6 MB in the beginning and 83.4 MB in the end (delta: -21.8 MB). Peak memory consumption was 39.0 MB. Max. memory is 16.1 GB. * TraceAbstraction took 696.59 ms. Allocated memory is still 107.0 MB. Free memory was 82.7 MB in the beginning and 77.9 MB in the end (delta: 4.8 MB). Peak memory consumption was 41.9 MB. Max. memory is 16.1 GB. * Witness Printer took 6.78 ms. Allocated memory is still 107.0 MB. Free memory is still 77.9 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: 0.5s, 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, 0.2s 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 [2020-11-22 13:02:33,667 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-22 13:02:33,669 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-22 13:02:33,712 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-22 13:02:33,713 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-22 13:02:33,717 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-22 13:02:33,721 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-22 13:02:33,723 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-22 13:02:33,725 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-22 13:02:33,727 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-22 13:02:33,728 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-22 13:02:33,730 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-22 13:02:33,730 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-22 13:02:33,731 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-22 13:02:33,733 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-22 13:02:33,734 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-22 13:02:33,735 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-22 13:02:33,736 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-22 13:02:33,738 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-22 13:02:33,741 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-22 13:02:33,743 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-22 13:02:33,744 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-22 13:02:33,745 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-22 13:02:33,746 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-22 13:02:33,750 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-22 13:02:33,750 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-22 13:02:33,750 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-22 13:02:33,765 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-22 13:02:33,766 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-22 13:02:33,767 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-22 13:02:33,767 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-22 13:02:33,768 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-22 13:02:33,769 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-22 13:02:33,770 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-22 13:02:33,771 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-22 13:02:33,771 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-22 13:02:33,772 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-22 13:02:33,772 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-22 13:02:33,773 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-22 13:02:33,774 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-22 13:02:33,775 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-22 13:02:33,779 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_f93c3030-1d4d-4d81-8f0f-7fc4f9a2d521/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2020-11-22 13:02:33,822 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-22 13:02:33,822 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-22 13:02:33,824 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-22 13:02:33,824 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-22 13:02:33,824 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-22 13:02:33,824 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-22 13:02:33,824 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-22 13:02:33,825 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-22 13:02:33,825 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-22 13:02:33,826 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-22 13:02:33,827 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-22 13:02:33,827 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-22 13:02:33,827 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-22 13:02:33,828 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-22 13:02:33,828 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-22 13:02:33,828 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-22 13:02:33,828 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-22 13:02:33,828 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-11-22 13:02:33,829 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-11-22 13:02:33,829 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-22 13:02:33,829 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-22 13:02:33,829 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-22 13:02:33,829 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-22 13:02:33,830 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-22 13:02:33,830 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-22 13:02:33,830 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-22 13:02:33,830 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-22 13:02:33,830 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-22 13:02:33,831 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-22 13:02:33,831 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-22 13:02:33,831 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-22 13:02:33,831 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2020-11-22 13:02:33,831 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-11-22 13:02:33,831 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-22 13:02:33,832 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-22 13:02:33,832 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-22 13:02:33,832 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_f93c3030-1d4d-4d81-8f0f-7fc4f9a2d521/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_f93c3030-1d4d-4d81-8f0f-7fc4f9a2d521/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4d18c017f419dc210dcbafa8af1edf74b131b258 [2020-11-22 13:02:34,204 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-22 13:02:34,239 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-22 13:02:34,244 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-22 13:02:34,245 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-22 13:02:34,246 INFO L275 PluginConnector]: CDTParser initialized [2020-11-22 13:02:34,248 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_f93c3030-1d4d-4d81-8f0f-7fc4f9a2d521/bin/utaipan/../../sv-benchmarks/c/float-benchs/filter2_iterated.c [2020-11-22 13:02:34,337 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_f93c3030-1d4d-4d81-8f0f-7fc4f9a2d521/bin/utaipan/data/e79ecf177/86291314637547e1bd7b54c4f503f02f/FLAGaf0ec670c [2020-11-22 13:02:34,884 INFO L306 CDTParser]: Found 1 translation units. [2020-11-22 13:02:34,884 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_f93c3030-1d4d-4d81-8f0f-7fc4f9a2d521/sv-benchmarks/c/float-benchs/filter2_iterated.c [2020-11-22 13:02:34,891 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_f93c3030-1d4d-4d81-8f0f-7fc4f9a2d521/bin/utaipan/data/e79ecf177/86291314637547e1bd7b54c4f503f02f/FLAGaf0ec670c [2020-11-22 13:02:35,236 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_f93c3030-1d4d-4d81-8f0f-7fc4f9a2d521/bin/utaipan/data/e79ecf177/86291314637547e1bd7b54c4f503f02f [2020-11-22 13:02:35,240 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-22 13:02:35,243 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-22 13:02:35,247 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-22 13:02:35,247 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-22 13:02:35,251 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-22 13:02:35,252 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:02:35" (1/1) ... [2020-11-22 13:02:35,258 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7c18a86e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:02:35, skipping insertion in model container [2020-11-22 13:02:35,258 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:02:35" (1/1) ... [2020-11-22 13:02:35,264 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-22 13:02:35,280 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-22 13:02:35,441 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 13:02:35,455 INFO L203 MainTranslator]: Completed pre-run [2020-11-22 13:02:35,492 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 13:02:35,511 INFO L208 MainTranslator]: Completed translation [2020-11-22 13:02:35,511 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:02:35 WrapperNode [2020-11-22 13:02:35,511 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-22 13:02:35,513 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-22 13:02:35,513 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-22 13:02:35,513 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-22 13:02:35,519 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:02:35" (1/1) ... [2020-11-22 13:02:35,532 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:02:35" (1/1) ... [2020-11-22 13:02:35,578 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-22 13:02:35,579 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-22 13:02:35,579 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-22 13:02:35,579 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-22 13:02:35,587 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:02:35" (1/1) ... [2020-11-22 13:02:35,588 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:02:35" (1/1) ... [2020-11-22 13:02:35,593 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:02:35" (1/1) ... [2020-11-22 13:02:35,593 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:02:35" (1/1) ... [2020-11-22 13:02:35,606 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:02:35" (1/1) ... [2020-11-22 13:02:35,610 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:02:35" (1/1) ... [2020-11-22 13:02:35,626 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:02:35" (1/1) ... [2020-11-22 13:02:35,630 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-22 13:02:35,631 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-22 13:02:35,631 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-22 13:02:35,631 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-22 13:02:35,632 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:02:35" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f93c3030-1d4d-4d81-8f0f-7fc4f9a2d521/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 [2020-11-22 13:02:35,708 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4 [2020-11-22 13:02:35,708 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-11-22 13:02:35,711 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-22 13:02:35,711 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2020-11-22 13:02:35,712 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-22 13:02:35,712 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-22 13:02:35,712 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2020-11-22 13:02:46,684 WARN L195 Executor]: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000) stderr output: (error "out of memory") [2020-11-22 13:02:46,689 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$do_action(Parser.java:1461) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:654) at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:419) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:206) ... 26 more [2020-11-22 13:02:46,694 INFO L168 Benchmark]: Toolchain (without parser) took 11449.28 ms. Allocated memory is still 81.8 MB. Free memory was 58.5 MB in the beginning and 44.8 MB in the end (delta: 13.7 MB). Peak memory consumption was 14.2 MB. Max. memory is 16.1 GB. [2020-11-22 13:02:46,695 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 54.5 MB. Free memory was 35.4 MB in the beginning and 35.4 MB in the end (delta: 34.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 13:02:46,696 INFO L168 Benchmark]: CACSL2BoogieTranslator took 265.04 ms. Allocated memory is still 81.8 MB. Free memory was 58.3 MB in the beginning and 45.8 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-11-22 13:02:46,696 INFO L168 Benchmark]: Boogie Procedure Inliner took 65.81 ms. Allocated memory is still 81.8 MB. Free memory was 45.8 MB in the beginning and 65.0 MB in the end (delta: -19.2 MB). Peak memory consumption was 5.8 MB. Max. memory is 16.1 GB. [2020-11-22 13:02:46,699 INFO L168 Benchmark]: Boogie Preprocessor took 50.92 ms. Allocated memory is still 81.8 MB. Free memory was 65.0 MB in the beginning and 63.2 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-22 13:02:46,700 INFO L168 Benchmark]: RCFGBuilder took 11060.68 ms. Allocated memory is still 81.8 MB. Free memory was 63.0 MB in the beginning and 44.8 MB in the end (delta: 18.2 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2020-11-22 13:02:46,704 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 54.5 MB. Free memory was 35.4 MB in the beginning and 35.4 MB in the end (delta: 34.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 265.04 ms. Allocated memory is still 81.8 MB. Free memory was 58.3 MB in the beginning and 45.8 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 65.81 ms. Allocated memory is still 81.8 MB. Free memory was 45.8 MB in the beginning and 65.0 MB in the end (delta: -19.2 MB). Peak memory consumption was 5.8 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 50.92 ms. Allocated memory is still 81.8 MB. Free memory was 65.0 MB in the beginning and 63.2 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 11060.68 ms. Allocated memory is still 81.8 MB. Free memory was 63.0 MB in the beginning and 44.8 MB in the end (delta: 18.2 MB). Peak memory consumption was 16.8 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...