./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/floats-cdfpl/newton_2_8.i --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_868a82ad-9eb7-4b8a-97dd-16a700891a84/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_868a82ad-9eb7-4b8a-97dd-16a700891a84/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_868a82ad-9eb7-4b8a-97dd-16a700891a84/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_868a82ad-9eb7-4b8a-97dd-16a700891a84/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/floats-cdfpl/newton_2_8.i -s /tmp/vcloud-vcloud-master/worker/run_dir_868a82ad-9eb7-4b8a-97dd-16a700891a84/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_868a82ad-9eb7-4b8a-97dd-16a700891a84/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 80de2bcb413ca82cf36ee5cabb22cc23421a986b .................................................................................................................................................................................................................................................... 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_868a82ad-9eb7-4b8a-97dd-16a700891a84/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_868a82ad-9eb7-4b8a-97dd-16a700891a84/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_868a82ad-9eb7-4b8a-97dd-16a700891a84/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_868a82ad-9eb7-4b8a-97dd-16a700891a84/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/floats-cdfpl/newton_2_8.i -s /tmp/vcloud-vcloud-master/worker/run_dir_868a82ad-9eb7-4b8a-97dd-16a700891a84/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_868a82ad-9eb7-4b8a-97dd-16a700891a84/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 80de2bcb413ca82cf36ee5cabb22cc23421a986b ................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-22 13:03:18,402 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-22 13:03:18,405 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-22 13:03:18,465 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-22 13:03:18,465 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-22 13:03:18,470 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-22 13:03:18,473 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-22 13:03:18,477 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-22 13:03:18,479 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-22 13:03:18,485 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-22 13:03:18,486 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-22 13:03:18,489 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-22 13:03:18,489 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-22 13:03:18,493 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-22 13:03:18,494 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-22 13:03:18,496 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-22 13:03:18,497 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-22 13:03:18,501 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-22 13:03:18,505 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-22 13:03:18,512 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-22 13:03:18,514 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-22 13:03:18,515 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-22 13:03:18,518 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-22 13:03:18,519 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-22 13:03:18,527 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-22 13:03:18,528 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-22 13:03:18,528 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-22 13:03:18,530 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-22 13:03:18,531 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-22 13:03:18,532 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-22 13:03:18,533 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-22 13:03:18,534 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-22 13:03:18,536 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-22 13:03:18,537 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-22 13:03:18,538 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-22 13:03:18,538 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-22 13:03:18,539 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-22 13:03:18,540 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-22 13:03:18,540 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-22 13:03:18,541 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-22 13:03:18,542 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-22 13:03:18,544 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_868a82ad-9eb7-4b8a-97dd-16a700891a84/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-11-22 13:03:18,584 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-22 13:03:18,585 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-22 13:03:18,586 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-22 13:03:18,586 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-22 13:03:18,586 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-22 13:03:18,587 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-22 13:03:18,587 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-22 13:03:18,587 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-22 13:03:18,587 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-22 13:03:18,588 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-22 13:03:18,589 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-22 13:03:18,589 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-22 13:03:18,589 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-22 13:03:18,589 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-22 13:03:18,590 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-22 13:03:18,590 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-22 13:03:18,591 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-22 13:03:18,591 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-22 13:03:18,591 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-22 13:03:18,591 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-22 13:03:18,592 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-22 13:03:18,592 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-22 13:03:18,592 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-22 13:03:18,592 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-22 13:03:18,593 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-22 13:03:18,593 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-22 13:03:18,593 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-22 13:03:18,593 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-22 13:03:18,594 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-22 13:03:18,594 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-22 13:03:18,594 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-22 13:03:18,594 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-22 13:03:18,595 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-22 13:03:18,595 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-22 13:03:18,595 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-22 13:03:18,595 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-22 13:03:18,596 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-22 13:03:18,596 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-22 13:03:18,596 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-22 13:03:18,596 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-22 13:03:18,597 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_868a82ad-9eb7-4b8a-97dd-16a700891a84/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_868a82ad-9eb7-4b8a-97dd-16a700891a84/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 80de2bcb413ca82cf36ee5cabb22cc23421a986b [2020-11-22 13:03:18,835 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-22 13:03:18,864 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-22 13:03:18,867 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-22 13:03:18,868 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-22 13:03:18,869 INFO L275 PluginConnector]: CDTParser initialized [2020-11-22 13:03:18,870 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_868a82ad-9eb7-4b8a-97dd-16a700891a84/bin/utaipan/../../sv-benchmarks/c/floats-cdfpl/newton_2_8.i [2020-11-22 13:03:18,928 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_868a82ad-9eb7-4b8a-97dd-16a700891a84/bin/utaipan/data/6745d7266/b83752d6223a41b1ae2af9d2eaa9eaf6/FLAG922257bc4 [2020-11-22 13:03:19,343 INFO L306 CDTParser]: Found 1 translation units. [2020-11-22 13:03:19,344 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_868a82ad-9eb7-4b8a-97dd-16a700891a84/sv-benchmarks/c/floats-cdfpl/newton_2_8.i [2020-11-22 13:03:19,349 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_868a82ad-9eb7-4b8a-97dd-16a700891a84/bin/utaipan/data/6745d7266/b83752d6223a41b1ae2af9d2eaa9eaf6/FLAG922257bc4 [2020-11-22 13:03:19,739 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_868a82ad-9eb7-4b8a-97dd-16a700891a84/bin/utaipan/data/6745d7266/b83752d6223a41b1ae2af9d2eaa9eaf6 [2020-11-22 13:03:19,749 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-22 13:03:19,750 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-22 13:03:19,753 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-22 13:03:19,753 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-22 13:03:19,756 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-22 13:03:19,757 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:03:19" (1/1) ... [2020-11-22 13:03:19,759 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1c5c452 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:03:19, skipping insertion in model container [2020-11-22 13:03:19,760 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:03:19" (1/1) ... [2020-11-22 13:03:19,768 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-22 13:03:19,788 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-22 13:03:20,037 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 13:03:20,046 INFO L203 MainTranslator]: Completed pre-run [2020-11-22 13:03:20,064 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 13:03:20,078 INFO L208 MainTranslator]: Completed translation [2020-11-22 13:03:20,079 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:03:20 WrapperNode [2020-11-22 13:03:20,079 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-22 13:03:20,080 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-22 13:03:20,080 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-22 13:03:20,080 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-22 13:03:20,088 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:03:20" (1/1) ... [2020-11-22 13:03:20,094 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:03:20" (1/1) ... [2020-11-22 13:03:20,113 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-22 13:03:20,113 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-22 13:03:20,114 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-22 13:03:20,114 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-22 13:03:20,121 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:03:20" (1/1) ... [2020-11-22 13:03:20,122 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:03:20" (1/1) ... [2020-11-22 13:03:20,124 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:03:20" (1/1) ... [2020-11-22 13:03:20,124 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:03:20" (1/1) ... [2020-11-22 13:03:20,129 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:03:20" (1/1) ... [2020-11-22 13:03:20,131 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:03:20" (1/1) ... [2020-11-22 13:03:20,132 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:03:20" (1/1) ... [2020-11-22 13:03:20,134 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-22 13:03:20,135 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-22 13:03:20,135 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-22 13:03:20,135 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-22 13:03:20,136 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:03:20" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_868a82ad-9eb7-4b8a-97dd-16a700891a84/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 13:03:20,225 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-22 13:03:20,225 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-22 13:03:20,225 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-22 13:03:20,225 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-22 13:03:20,693 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-22 13:03:20,693 INFO L298 CfgBuilder]: Removed 16 assume(true) statements. [2020-11-22 13:03:20,695 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:03:20 BoogieIcfgContainer [2020-11-22 13:03:20,695 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-22 13:03:20,698 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-22 13:03:20,699 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-22 13:03:20,703 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-22 13:03:20,703 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 01:03:19" (1/3) ... [2020-11-22 13:03:20,704 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23b60c37 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:03:20, skipping insertion in model container [2020-11-22 13:03:20,704 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:03:20" (2/3) ... [2020-11-22 13:03:20,705 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23b60c37 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:03:20, skipping insertion in model container [2020-11-22 13:03:20,705 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:03:20" (3/3) ... [2020-11-22 13:03:20,706 INFO L111 eAbstractionObserver]: Analyzing ICFG newton_2_8.i [2020-11-22 13:03:20,720 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-22 13:03:20,724 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-22 13:03:20,735 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-22 13:03:20,757 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-22 13:03:20,757 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-22 13:03:20,757 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-22 13:03:20,758 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-22 13:03:20,758 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-22 13:03:20,758 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-22 13:03:20,758 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-22 13:03:20,758 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-22 13:03:20,770 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states. [2020-11-22 13:03:20,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-11-22 13:03:20,774 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:03:20,774 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-11-22 13:03:20,775 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:03:20,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:03:20,780 INFO L82 PathProgramCache]: Analyzing trace with hash 2284137, now seen corresponding path program 1 times [2020-11-22 13:03:20,789 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:03:20,789 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2101538878] [2020-11-22 13:03:20,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:03:20,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-22 13:03:20,911 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-22 13:03:20,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-22 13:03:20,935 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-22 13:03:20,953 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2020-11-22 13:03:20,954 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-22 13:03:20,954 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-22 13:03:20,977 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 01:03:20 BoogieIcfgContainer [2020-11-22 13:03:20,978 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-22 13:03:20,979 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-22 13:03:20,979 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-22 13:03:20,980 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-22 13:03:20,980 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:03:20" (3/4) ... [2020-11-22 13:03:20,982 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-22 13:03:20,983 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-22 13:03:20,985 INFO L168 Benchmark]: Toolchain (without parser) took 1233.36 ms. Allocated memory was 94.4 MB in the beginning and 113.2 MB in the end (delta: 18.9 MB). Free memory was 64.1 MB in the beginning and 88.0 MB in the end (delta: -23.9 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 13:03:20,986 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 94.4 MB. Free memory was 53.2 MB in the beginning and 53.1 MB in the end (delta: 39.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 13:03:20,986 INFO L168 Benchmark]: CACSL2BoogieTranslator took 326.46 ms. Allocated memory is still 94.4 MB. Free memory was 63.9 MB in the beginning and 70.6 MB in the end (delta: -6.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-22 13:03:20,987 INFO L168 Benchmark]: Boogie Procedure Inliner took 32.91 ms. Allocated memory is still 94.4 MB. Free memory was 70.6 MB in the beginning and 69.2 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-22 13:03:20,988 INFO L168 Benchmark]: Boogie Preprocessor took 20.80 ms. Allocated memory is still 94.4 MB. Free memory was 69.2 MB in the beginning and 67.8 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-22 13:03:20,989 INFO L168 Benchmark]: RCFGBuilder took 560.22 ms. Allocated memory is still 94.4 MB. Free memory was 67.8 MB in the beginning and 50.3 MB in the end (delta: 17.5 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2020-11-22 13:03:20,989 INFO L168 Benchmark]: TraceAbstraction took 280.11 ms. Allocated memory was 94.4 MB in the beginning and 113.2 MB in the end (delta: 18.9 MB). Free memory was 50.0 MB in the beginning and 88.6 MB in the end (delta: -38.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 13:03:20,990 INFO L168 Benchmark]: Witness Printer took 3.31 ms. Allocated memory is still 113.2 MB. Free memory was 88.6 MB in the beginning and 88.0 MB in the end (delta: 570.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 13:03:20,994 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 94.4 MB. Free memory was 53.2 MB in the beginning and 53.1 MB in the end (delta: 39.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 326.46 ms. Allocated memory is still 94.4 MB. Free memory was 63.9 MB in the beginning and 70.6 MB in the end (delta: -6.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 32.91 ms. Allocated memory is still 94.4 MB. Free memory was 70.6 MB in the beginning and 69.2 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 20.80 ms. Allocated memory is still 94.4 MB. Free memory was 69.2 MB in the beginning and 67.8 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 560.22 ms. Allocated memory is still 94.4 MB. Free memory was 67.8 MB in the beginning and 50.3 MB in the end (delta: 17.5 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 280.11 ms. Allocated memory was 94.4 MB in the beginning and 113.2 MB in the end (delta: 18.9 MB). Free memory was 50.0 MB in the beginning and 88.6 MB in the end (delta: -38.6 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 3.31 ms. Allocated memory is still 113.2 MB. Free memory was 88.6 MB in the beginning and 88.0 MB in the end (delta: 570.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 12]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 31, overapproximation of someBinaryDOUBLEComparisonOperation at line 41, overapproximation of someBinaryArithmeticFLOAToperation at line 20. Possible FailurePath: [L30] float IN = __VERIFIER_nondet_float(); [L15] COND FALSE !(!cond) [L20] return x - (x*x*x)/6.0f + (x*x*x*x*x)/120.0f + (x*x*x*x*x*x*x)/5040.0f; [L25] return 1 - (x*x)/2.0f + (x*x*x*x)/24.0f + (x*x*x*x*x*x)/720.0f; [L33] float x = IN - f(IN)/fp(IN); [L20] return x - (x*x*x)/6.0f + (x*x*x*x*x)/120.0f + (x*x*x*x*x*x*x)/5040.0f; [L25] return 1 - (x*x)/2.0f + (x*x*x*x)/24.0f + (x*x*x*x*x*x)/720.0f; [L35] x = x - f(x)/fp(x) [L41] COND TRUE !(x < 0.1) [L12] COND FALSE !(0) [L12] __assert_fail ("0", "newton_2_8.c", 3, __extension__ __PRETTY_FUNCTION__) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 7 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.2s, 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=7occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 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 13:03:23,464 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-22 13:03:23,467 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-22 13:03:23,516 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-22 13:03:23,517 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-22 13:03:23,522 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-22 13:03:23,524 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-22 13:03:23,529 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-22 13:03:23,532 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-22 13:03:23,540 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-22 13:03:23,542 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-22 13:03:23,547 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-22 13:03:23,547 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-22 13:03:23,553 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-22 13:03:23,554 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-22 13:03:23,556 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-22 13:03:23,557 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-22 13:03:23,560 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-22 13:03:23,564 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-22 13:03:23,569 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-22 13:03:23,572 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-22 13:03:23,573 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-22 13:03:23,575 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-22 13:03:23,577 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-22 13:03:23,586 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-22 13:03:23,587 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-22 13:03:23,588 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-22 13:03:23,590 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-22 13:03:23,590 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-22 13:03:23,608 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-22 13:03:23,609 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-22 13:03:23,610 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-22 13:03:23,611 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-22 13:03:23,612 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-22 13:03:23,613 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-22 13:03:23,613 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-22 13:03:23,614 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-22 13:03:23,614 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-22 13:03:23,615 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-22 13:03:23,617 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-22 13:03:23,617 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-22 13:03:23,618 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_868a82ad-9eb7-4b8a-97dd-16a700891a84/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2020-11-22 13:03:23,657 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-22 13:03:23,658 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-22 13:03:23,660 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-22 13:03:23,660 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-22 13:03:23,660 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-22 13:03:23,661 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-22 13:03:23,661 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-22 13:03:23,661 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-22 13:03:23,661 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-22 13:03:23,663 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-22 13:03:23,664 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-22 13:03:23,664 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-22 13:03:23,664 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-22 13:03:23,664 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-22 13:03:23,665 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-22 13:03:23,665 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-22 13:03:23,665 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-22 13:03:23,665 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-11-22 13:03:23,666 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-11-22 13:03:23,666 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-22 13:03:23,666 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-22 13:03:23,666 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-22 13:03:23,666 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-22 13:03:23,667 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-22 13:03:23,667 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-22 13:03:23,667 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-22 13:03:23,667 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-22 13:03:23,668 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-22 13:03:23,668 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-22 13:03:23,668 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-22 13:03:23,668 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-22 13:03:23,669 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2020-11-22 13:03:23,669 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-11-22 13:03:23,669 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-22 13:03:23,670 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-22 13:03:23,670 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-22 13:03:23,670 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_868a82ad-9eb7-4b8a-97dd-16a700891a84/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_868a82ad-9eb7-4b8a-97dd-16a700891a84/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 80de2bcb413ca82cf36ee5cabb22cc23421a986b [2020-11-22 13:03:24,055 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-22 13:03:24,076 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-22 13:03:24,079 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-22 13:03:24,080 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-22 13:03:24,081 INFO L275 PluginConnector]: CDTParser initialized [2020-11-22 13:03:24,081 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_868a82ad-9eb7-4b8a-97dd-16a700891a84/bin/utaipan/../../sv-benchmarks/c/floats-cdfpl/newton_2_8.i [2020-11-22 13:03:24,155 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_868a82ad-9eb7-4b8a-97dd-16a700891a84/bin/utaipan/data/4dec35fd0/3253a72c1f394a67866de21d8b3d0f51/FLAG8a80b0b74 [2020-11-22 13:03:24,701 INFO L306 CDTParser]: Found 1 translation units. [2020-11-22 13:03:24,702 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_868a82ad-9eb7-4b8a-97dd-16a700891a84/sv-benchmarks/c/floats-cdfpl/newton_2_8.i [2020-11-22 13:03:24,708 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_868a82ad-9eb7-4b8a-97dd-16a700891a84/bin/utaipan/data/4dec35fd0/3253a72c1f394a67866de21d8b3d0f51/FLAG8a80b0b74 [2020-11-22 13:03:25,104 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_868a82ad-9eb7-4b8a-97dd-16a700891a84/bin/utaipan/data/4dec35fd0/3253a72c1f394a67866de21d8b3d0f51 [2020-11-22 13:03:25,108 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-22 13:03:25,110 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-22 13:03:25,112 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-22 13:03:25,112 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-22 13:03:25,116 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-22 13:03:25,117 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:03:25" (1/1) ... [2020-11-22 13:03:25,120 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6ee5e405 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:03:25, skipping insertion in model container [2020-11-22 13:03:25,121 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:03:25" (1/1) ... [2020-11-22 13:03:25,132 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-22 13:03:25,151 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-22 13:03:25,290 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 13:03:25,302 INFO L203 MainTranslator]: Completed pre-run [2020-11-22 13:03:25,322 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 13:03:25,338 INFO L208 MainTranslator]: Completed translation [2020-11-22 13:03:25,339 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:03:25 WrapperNode [2020-11-22 13:03:25,339 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-22 13:03:25,340 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-22 13:03:25,340 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-22 13:03:25,340 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-22 13:03:25,365 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:03:25" (1/1) ... [2020-11-22 13:03:25,392 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:03:25" (1/1) ... [2020-11-22 13:03:25,428 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-22 13:03:25,430 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-22 13:03:25,431 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-22 13:03:25,432 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-22 13:03:25,441 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:03:25" (1/1) ... [2020-11-22 13:03:25,441 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:03:25" (1/1) ... [2020-11-22 13:03:25,449 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:03:25" (1/1) ... [2020-11-22 13:03:25,450 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:03:25" (1/1) ... [2020-11-22 13:03:25,471 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:03:25" (1/1) ... [2020-11-22 13:03:25,485 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:03:25" (1/1) ... [2020-11-22 13:03:25,487 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:03:25" (1/1) ... [2020-11-22 13:03:25,490 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-22 13:03:25,496 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-22 13:03:25,496 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-22 13:03:25,496 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-22 13:03:25,497 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:03:25" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_868a82ad-9eb7-4b8a-97dd-16a700891a84/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 13:03:25,556 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-11-22 13:03:25,556 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-22 13:03:25,556 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-22 13:03:25,557 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-22 13:03:38,073 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-22 13:03:38,073 INFO L298 CfgBuilder]: Removed 16 assume(true) statements. [2020-11-22 13:03:38,074 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:03:38 BoogieIcfgContainer [2020-11-22 13:03:38,075 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-22 13:03:38,076 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-22 13:03:38,076 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-22 13:03:38,079 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-22 13:03:38,079 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 01:03:25" (1/3) ... [2020-11-22 13:03:38,080 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52f869b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:03:38, skipping insertion in model container [2020-11-22 13:03:38,080 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:03:25" (2/3) ... [2020-11-22 13:03:38,081 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52f869b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:03:38, skipping insertion in model container [2020-11-22 13:03:38,081 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:03:38" (3/3) ... [2020-11-22 13:03:38,082 INFO L111 eAbstractionObserver]: Analyzing ICFG newton_2_8.i [2020-11-22 13:03:38,093 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-22 13:03:38,097 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-22 13:03:38,108 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-22 13:03:38,130 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-22 13:03:38,130 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-22 13:03:38,131 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-22 13:03:38,131 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-22 13:03:38,131 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-22 13:03:38,131 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-22 13:03:38,131 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-22 13:03:38,131 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-22 13:03:38,143 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states. [2020-11-22 13:03:38,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-22 13:03:38,148 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:03:38,149 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:03:38,149 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:03:38,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:03:38,155 INFO L82 PathProgramCache]: Analyzing trace with hash -646694038, now seen corresponding path program 1 times [2020-11-22 13:03:38,167 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-22 13:03:38,167 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [64591594] [2020-11-22 13:03:38,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_868a82ad-9eb7-4b8a-97dd-16a700891a84/bin/utaipan/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2020-11-22 13:03:40,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:03:40,524 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 1 conjunts are in the unsatisfiable core [2020-11-22 13:03:40,536 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 13:03:40,560 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:03:40,561 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 13:03:40,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:03:40,568 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [64591594] [2020-11-22 13:03:40,569 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:03:40,569 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-11-22 13:03:40,570 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532645876] [2020-11-22 13:03:40,574 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-22 13:03:40,575 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-22 13:03:40,594 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-22 13:03:40,596 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-22 13:03:40,598 INFO L87 Difference]: Start difference. First operand 16 states. Second operand 2 states. [2020-11-22 13:03:40,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:03:40,615 INFO L93 Difference]: Finished difference Result 29 states and 32 transitions. [2020-11-22 13:03:40,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-22 13:03:40,616 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2020-11-22 13:03:40,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:03:40,638 INFO L225 Difference]: With dead ends: 29 [2020-11-22 13:03:40,647 INFO L226 Difference]: Without dead ends: 12 [2020-11-22 13:03:40,650 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-22 13:03:40,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2020-11-22 13:03:40,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2020-11-22 13:03:40,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2020-11-22 13:03:40,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 11 transitions. [2020-11-22 13:03:40,680 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 11 transitions. Word has length 11 [2020-11-22 13:03:40,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:03:40,681 INFO L481 AbstractCegarLoop]: Abstraction has 12 states and 11 transitions. [2020-11-22 13:03:40,681 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-22 13:03:40,681 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 11 transitions. [2020-11-22 13:03:40,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-22 13:03:40,682 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:03:40,682 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:03:40,905 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-11-22 13:03:40,905 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:03:40,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:03:40,906 INFO L82 PathProgramCache]: Analyzing trace with hash 33364332, now seen corresponding path program 1 times [2020-11-22 13:03:40,907 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-22 13:03:40,907 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [515881230] [2020-11-22 13:03:40,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_868a82ad-9eb7-4b8a-97dd-16a700891a84/bin/utaipan/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2020-11-22 13:03:56,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-22 13:03:56,424 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-22 13:04:04,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-22 13:04:04,575 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-22 13:04:04,775 INFO L173 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2020-11-22 13:04:04,775 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-22 13:04:04,976 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-11-22 13:04:05,002 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 01:04:05 BoogieIcfgContainer [2020-11-22 13:04:05,002 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-22 13:04:05,003 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-22 13:04:05,003 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-22 13:04:05,003 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-22 13:04:05,007 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:03:38" (3/4) ... [2020-11-22 13:04:05,009 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-22 13:04:05,048 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_868a82ad-9eb7-4b8a-97dd-16a700891a84/bin/utaipan/witness.graphml [2020-11-22 13:04:05,048 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-22 13:04:05,050 INFO L168 Benchmark]: Toolchain (without parser) took 39939.12 ms. Allocated memory is still 79.7 MB. Free memory was 64.1 MB in the beginning and 42.8 MB in the end (delta: 21.3 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. [2020-11-22 13:04:05,051 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 79.7 MB. Free memory is still 61.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 13:04:05,051 INFO L168 Benchmark]: CACSL2BoogieTranslator took 227.35 ms. Allocated memory is still 79.7 MB. Free memory was 63.8 MB in the beginning and 53.3 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-22 13:04:05,052 INFO L168 Benchmark]: Boogie Procedure Inliner took 89.51 ms. Allocated memory is still 79.7 MB. Free memory was 53.3 MB in the beginning and 62.3 MB in the end (delta: -9.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-22 13:04:05,053 INFO L168 Benchmark]: Boogie Preprocessor took 65.02 ms. Allocated memory is still 79.7 MB. Free memory was 62.3 MB in the beginning and 60.9 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 13:04:05,053 INFO L168 Benchmark]: RCFGBuilder took 12578.84 ms. Allocated memory is still 79.7 MB. Free memory was 60.9 MB in the beginning and 48.5 MB in the end (delta: 12.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-22 13:04:05,054 INFO L168 Benchmark]: TraceAbstraction took 26926.21 ms. Allocated memory is still 79.7 MB. Free memory was 48.0 MB in the beginning and 44.9 MB in the end (delta: 3.1 MB). Peak memory consumption was 7.7 MB. Max. memory is 16.1 GB. [2020-11-22 13:04:05,055 INFO L168 Benchmark]: Witness Printer took 45.69 ms. Allocated memory is still 79.7 MB. Free memory was 44.6 MB in the beginning and 42.8 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-22 13:04:05,058 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 79.7 MB. Free memory is still 61.0 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 227.35 ms. Allocated memory is still 79.7 MB. Free memory was 63.8 MB in the beginning and 53.3 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 89.51 ms. Allocated memory is still 79.7 MB. Free memory was 53.3 MB in the beginning and 62.3 MB in the end (delta: -9.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 65.02 ms. Allocated memory is still 79.7 MB. Free memory was 62.3 MB in the beginning and 60.9 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 12578.84 ms. Allocated memory is still 79.7 MB. Free memory was 60.9 MB in the beginning and 48.5 MB in the end (delta: 12.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 26926.21 ms. Allocated memory is still 79.7 MB. Free memory was 48.0 MB in the beginning and 44.9 MB in the end (delta: 3.1 MB). Peak memory consumption was 7.7 MB. Max. memory is 16.1 GB. * Witness Printer took 45.69 ms. Allocated memory is still 79.7 MB. Free memory was 44.6 MB in the beginning and 42.8 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 12]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L30] float IN = __VERIFIER_nondet_float(); [L15] COND FALSE !(!cond) [L20] return x - (x*x*x)/6.0f + (x*x*x*x*x)/120.0f + (x*x*x*x*x*x*x)/5040.0f; [L25] return 1 - (x*x)/2.0f + (x*x*x*x)/24.0f + (x*x*x*x*x*x)/720.0f; [L33] float x = IN - f(IN)/fp(IN); [L20] return x - (x*x*x)/6.0f + (x*x*x*x*x)/120.0f + (x*x*x*x*x*x*x)/5040.0f; [L25] return 1 - (x*x)/2.0f + (x*x*x*x)/24.0f + (x*x*x*x*x*x)/720.0f; [L35] x = x - f(x)/fp(x) [L41] COND TRUE !(x < 0.1) [L12] COND FALSE !(0) [L12] __assert_fail ("0", "newton_2_8.c", 3, __extension__ __PRETTY_FUNCTION__) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 16 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 26.8s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 15 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 20 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=16occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 17.6s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 22 NumberOfCodeBlocks, 22 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 20 ConstructedInterpolants, 0 QuantifiedInterpolants, 200 SizeOfPredicates, 0 NumberOfNonLiveVariables, 41 ConjunctsInSsa, 1 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 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 proved your program to be incorrect! Received shutdown request...