./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-floats-scientific-comp/loop2-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b5699aa Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_8f60ec9b-18a8-4c3a-a16c-96f10a0764ea/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_8f60ec9b-18a8-4c3a-a16c-96f10a0764ea/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_8f60ec9b-18a8-4c3a-a16c-96f10a0764ea/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_8f60ec9b-18a8-4c3a-a16c-96f10a0764ea/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-floats-scientific-comp/loop2-1.c -s /tmp/vcloud-vcloud-master/worker/run_dir_8f60ec9b-18a8-4c3a-a16c-96f10a0764ea/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_8f60ec9b-18a8-4c3a-a16c-96f10a0764ea/bin/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 46b366fd2d10429563cb722af2c8528eb816bb82 .......................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_8f60ec9b-18a8-4c3a-a16c-96f10a0764ea/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_8f60ec9b-18a8-4c3a-a16c-96f10a0764ea/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_8f60ec9b-18a8-4c3a-a16c-96f10a0764ea/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_8f60ec9b-18a8-4c3a-a16c-96f10a0764ea/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-floats-scientific-comp/loop2-1.c -s /tmp/vcloud-vcloud-master/worker/run_dir_8f60ec9b-18a8-4c3a-a16c-96f10a0764ea/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_8f60ec9b-18a8-4c3a-a16c-96f10a0764ea/bin/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 46b366fd2d10429563cb722af2c8528eb816bb82 ....................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.1.24-6b5699a [2019-11-26 02:49:44,665 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-26 02:49:44,667 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-26 02:49:44,677 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-26 02:49:44,678 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-26 02:49:44,679 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-26 02:49:44,680 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-26 02:49:44,682 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-26 02:49:44,684 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-26 02:49:44,685 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-26 02:49:44,686 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-26 02:49:44,687 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-26 02:49:44,687 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-26 02:49:44,688 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-26 02:49:44,689 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-26 02:49:44,690 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-26 02:49:44,691 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-26 02:49:44,692 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-26 02:49:44,694 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-26 02:49:44,696 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-26 02:49:44,698 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-26 02:49:44,699 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-26 02:49:44,700 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-26 02:49:44,701 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-26 02:49:44,703 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-26 02:49:44,704 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-26 02:49:44,704 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-26 02:49:44,705 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-26 02:49:44,705 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-26 02:49:44,706 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-26 02:49:44,707 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-26 02:49:44,707 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-26 02:49:44,708 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-26 02:49:44,709 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-26 02:49:44,710 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-26 02:49:44,710 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-26 02:49:44,711 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-26 02:49:44,711 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-26 02:49:44,712 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-26 02:49:44,712 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-26 02:49:44,713 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-26 02:49:44,714 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_8f60ec9b-18a8-4c3a-a16c-96f10a0764ea/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2019-11-26 02:49:44,727 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-26 02:49:44,727 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-26 02:49:44,728 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-26 02:49:44,728 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-26 02:49:44,728 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-26 02:49:44,728 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-26 02:49:44,728 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-11-26 02:49:44,729 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-26 02:49:44,729 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-26 02:49:44,729 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-11-26 02:49:44,729 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-11-26 02:49:44,729 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-26 02:49:44,730 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-11-26 02:49:44,730 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-11-26 02:49:44,730 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-11-26 02:49:44,731 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-26 02:49:44,731 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-26 02:49:44,731 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-26 02:49:44,731 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-26 02:49:44,732 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-26 02:49:44,732 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-26 02:49:44,732 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-26 02:49:44,732 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-26 02:49:44,732 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-26 02:49:44,733 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-26 02:49:44,733 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-26 02:49:44,733 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-26 02:49:44,733 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-26 02:49:44,734 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-26 02:49:44,734 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-26 02:49:44,734 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-26 02:49:44,734 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-26 02:49:44,734 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-26 02:49:44,735 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-11-26 02:49:44,735 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-26 02:49:44,735 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-26 02:49:44,735 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-26 02:49:44,735 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_8f60ec9b-18a8-4c3a-a16c-96f10a0764ea/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 46b366fd2d10429563cb722af2c8528eb816bb82 [2019-11-26 02:49:44,870 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-26 02:49:44,880 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-26 02:49:44,883 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-26 02:49:44,885 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-26 02:49:44,885 INFO L275 PluginConnector]: CDTParser initialized [2019-11-26 02:49:44,886 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_8f60ec9b-18a8-4c3a-a16c-96f10a0764ea/bin/utaipan/../../sv-benchmarks/c/loop-floats-scientific-comp/loop2-1.c [2019-11-26 02:49:44,939 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_8f60ec9b-18a8-4c3a-a16c-96f10a0764ea/bin/utaipan/data/a630ab7df/d0d9df9c036945e6abd34cb6e1a5ddd2/FLAGa73bae93c [2019-11-26 02:49:45,389 INFO L306 CDTParser]: Found 1 translation units. [2019-11-26 02:49:45,390 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_8f60ec9b-18a8-4c3a-a16c-96f10a0764ea/sv-benchmarks/c/loop-floats-scientific-comp/loop2-1.c [2019-11-26 02:49:45,396 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_8f60ec9b-18a8-4c3a-a16c-96f10a0764ea/bin/utaipan/data/a630ab7df/d0d9df9c036945e6abd34cb6e1a5ddd2/FLAGa73bae93c [2019-11-26 02:49:45,413 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_8f60ec9b-18a8-4c3a-a16c-96f10a0764ea/bin/utaipan/data/a630ab7df/d0d9df9c036945e6abd34cb6e1a5ddd2 [2019-11-26 02:49:45,417 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-26 02:49:45,418 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-26 02:49:45,419 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-26 02:49:45,425 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-26 02:49:45,428 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-26 02:49:45,429 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 02:49:45" (1/1) ... [2019-11-26 02:49:45,431 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@272bfaaa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:49:45, skipping insertion in model container [2019-11-26 02:49:45,432 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 02:49:45" (1/1) ... [2019-11-26 02:49:45,439 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-26 02:49:45,457 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-26 02:49:45,722 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-26 02:49:45,727 INFO L201 MainTranslator]: Completed pre-run [2019-11-26 02:49:45,752 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-26 02:49:45,765 INFO L205 MainTranslator]: Completed translation [2019-11-26 02:49:45,766 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:49:45 WrapperNode [2019-11-26 02:49:45,766 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-26 02:49:45,767 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-26 02:49:45,767 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-26 02:49:45,767 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-26 02:49:45,775 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:49:45" (1/1) ... [2019-11-26 02:49:45,781 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:49:45" (1/1) ... [2019-11-26 02:49:45,799 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-26 02:49:45,800 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-26 02:49:45,800 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-26 02:49:45,800 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-26 02:49:45,808 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:49:45" (1/1) ... [2019-11-26 02:49:45,809 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:49:45" (1/1) ... [2019-11-26 02:49:45,810 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:49:45" (1/1) ... [2019-11-26 02:49:45,810 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:49:45" (1/1) ... [2019-11-26 02:49:45,814 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:49:45" (1/1) ... [2019-11-26 02:49:45,827 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:49:45" (1/1) ... [2019-11-26 02:49:45,829 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:49:45" (1/1) ... [2019-11-26 02:49:45,837 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-26 02:49:45,838 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-26 02:49:45,839 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-26 02:49:45,839 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-26 02:49:45,840 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:49:45" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8f60ec9b-18a8-4c3a-a16c-96f10a0764ea/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-26 02:49:45,908 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-26 02:49:45,909 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-26 02:49:46,202 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-26 02:49:46,203 INFO L284 CfgBuilder]: Removed 7 assume(true) statements. [2019-11-26 02:49:46,204 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:49:46 BoogieIcfgContainer [2019-11-26 02:49:46,204 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-26 02:49:46,204 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-26 02:49:46,205 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-26 02:49:46,224 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-26 02:49:46,224 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 02:49:45" (1/3) ... [2019-11-26 02:49:46,225 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@435c287e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 02:49:46, skipping insertion in model container [2019-11-26 02:49:46,225 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:49:45" (2/3) ... [2019-11-26 02:49:46,226 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@435c287e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 02:49:46, skipping insertion in model container [2019-11-26 02:49:46,226 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:49:46" (3/3) ... [2019-11-26 02:49:46,227 INFO L109 eAbstractionObserver]: Analyzing ICFG loop2-1.c [2019-11-26 02:49:46,241 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-26 02:49:46,259 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-26 02:49:46,270 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-26 02:49:46,292 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-26 02:49:46,292 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-26 02:49:46,293 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-26 02:49:46,293 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-26 02:49:46,293 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-26 02:49:46,293 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-26 02:49:46,293 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-26 02:49:46,294 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-26 02:49:46,313 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states. [2019-11-26 02:49:46,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-11-26 02:49:46,318 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:49:46,319 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-11-26 02:49:46,320 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:49:46,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:49:46,326 INFO L82 PathProgramCache]: Analyzing trace with hash 67920598, now seen corresponding path program 1 times [2019-11-26 02:49:46,335 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:49:46,335 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438259913] [2019-11-26 02:49:46,336 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:49:46,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:49:46,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:49:46,459 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1438259913] [2019-11-26 02:49:46,460 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:49:46,461 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-26 02:49:46,462 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579919589] [2019-11-26 02:49:46,466 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-26 02:49:46,467 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-26 02:49:46,479 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-26 02:49:46,480 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-26 02:49:46,482 INFO L87 Difference]: Start difference. First operand 9 states. Second operand 2 states. [2019-11-26 02:49:46,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:49:46,498 INFO L93 Difference]: Finished difference Result 15 states and 17 transitions. [2019-11-26 02:49:46,498 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-26 02:49:46,500 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 5 [2019-11-26 02:49:46,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:49:46,509 INFO L225 Difference]: With dead ends: 15 [2019-11-26 02:49:46,509 INFO L226 Difference]: Without dead ends: 7 [2019-11-26 02:49:46,516 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-26 02:49:46,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2019-11-26 02:49:46,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2019-11-26 02:49:46,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2019-11-26 02:49:46,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 7 transitions. [2019-11-26 02:49:46,543 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 7 transitions. Word has length 5 [2019-11-26 02:49:46,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:49:46,543 INFO L462 AbstractCegarLoop]: Abstraction has 7 states and 7 transitions. [2019-11-26 02:49:46,543 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-26 02:49:46,543 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 7 transitions. [2019-11-26 02:49:46,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-11-26 02:49:46,544 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:49:46,544 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-11-26 02:49:46,544 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:49:46,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:49:46,545 INFO L82 PathProgramCache]: Analyzing trace with hash 2104433358, now seen corresponding path program 1 times [2019-11-26 02:49:46,545 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:49:46,545 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672934509] [2019-11-26 02:49:46,546 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:49:46,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-26 02:49:46,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-26 02:49:46,602 INFO L174 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2019-11-26 02:49:46,602 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-26 02:49:46,625 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.11 02:49:46 BoogieIcfgContainer [2019-11-26 02:49:46,625 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-26 02:49:46,626 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-26 02:49:46,626 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-26 02:49:46,626 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-26 02:49:46,627 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:49:46" (3/4) ... [2019-11-26 02:49:46,630 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-11-26 02:49:46,630 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-26 02:49:46,632 INFO L168 Benchmark]: Toolchain (without parser) took 1213.68 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 157.8 MB). Free memory was 950.1 MB in the beginning and 1.1 GB in the end (delta: -157.5 MB). Peak memory consumption was 346.3 kB. Max. memory is 11.5 GB. [2019-11-26 02:49:46,633 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-26 02:49:46,634 INFO L168 Benchmark]: CACSL2BoogieTranslator took 347.48 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 157.8 MB). Free memory was 950.1 MB in the beginning and 1.2 GB in the end (delta: -202.7 MB). Peak memory consumption was 22.9 MB. Max. memory is 11.5 GB. [2019-11-26 02:49:46,634 INFO L168 Benchmark]: Boogie Procedure Inliner took 32.23 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-26 02:49:46,634 INFO L168 Benchmark]: Boogie Preprocessor took 37.98 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-26 02:49:46,635 INFO L168 Benchmark]: RCFGBuilder took 365.99 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 23.7 MB). Peak memory consumption was 23.7 MB. Max. memory is 11.5 GB. [2019-11-26 02:49:46,636 INFO L168 Benchmark]: TraceAbstraction took 420.84 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 21.5 MB). Peak memory consumption was 21.5 MB. Max. memory is 11.5 GB. [2019-11-26 02:49:46,636 INFO L168 Benchmark]: Witness Printer took 4.59 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-26 02:49:46,639 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 347.48 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 157.8 MB). Free memory was 950.1 MB in the beginning and 1.2 GB in the end (delta: -202.7 MB). Peak memory consumption was 22.9 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 32.23 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 37.98 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 365.99 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 23.7 MB). Peak memory consumption was 23.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 420.84 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 21.5 MB). Peak memory consumption was 21.5 MB. Max. memory is 11.5 GB. * Witness Printer took 4.59 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 7]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 44, overapproximation of someBinaryArithmeticFLOAToperation at line 27. Possible FailurePath: [L9] float pi = 3.14159 ; [L15] float x = __VERIFIER_nondet_float() ; [L16] float octant = pi/3 ; [L18] float oddExp = x ; [L19] float evenExp = 1.0 ; [L20] float term = x ; [L21] unsigned int count = 2 ; [L22] int multFactor = 0 ; [L23] int temp ; VAL [pi=314159/100000] [L25] COND TRUE 1 [L27] term = term * (x/count) [L28] EXPR (count>>1 % 2 == 0) ? 1 : -1 [L28] multFactor = (count>>1 % 2 == 0) ? 1 : -1 [L30] evenExp = evenExp + multFactor*term [L32] count++ [L34] term = term * (x/count) [L36] oddExp = oddExp + multFactor*term [L38] count++ [L40] temp = __VERIFIER_nondet_int() [L41] COND TRUE temp == 0 VAL [pi=314159/100000] [L7] COND TRUE !(cond) VAL [pi=314159/100000] [L7] __VERIFIER_error() VAL [pi=314159/100000] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 9 locations, 1 error locations. Result: UNSAFE, OverallTime: 0.3s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 9 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=9occurred 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, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 11 NumberOfCodeBlocks, 11 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 4 ConstructedInterpolants, 0 QuantifiedInterpolants, 16 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.24-6b5699a [2019-11-26 02:49:48,647 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-26 02:49:48,649 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-26 02:49:48,666 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-26 02:49:48,666 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-26 02:49:48,668 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-26 02:49:48,670 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-26 02:49:48,682 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-26 02:49:48,684 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-26 02:49:48,686 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-26 02:49:48,686 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-26 02:49:48,687 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-26 02:49:48,687 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-26 02:49:48,688 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-26 02:49:48,689 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-26 02:49:48,690 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-26 02:49:48,691 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-26 02:49:48,692 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-26 02:49:48,694 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-26 02:49:48,696 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-26 02:49:48,697 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-26 02:49:48,698 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-26 02:49:48,699 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-26 02:49:48,700 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-26 02:49:48,703 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-26 02:49:48,703 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-26 02:49:48,703 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-26 02:49:48,704 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-26 02:49:48,704 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-26 02:49:48,705 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-26 02:49:48,705 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-26 02:49:48,706 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-26 02:49:48,707 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-26 02:49:48,708 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-26 02:49:48,709 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-26 02:49:48,709 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-26 02:49:48,709 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-26 02:49:48,710 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-26 02:49:48,710 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-26 02:49:48,711 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-26 02:49:48,712 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-26 02:49:48,712 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_8f60ec9b-18a8-4c3a-a16c-96f10a0764ea/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2019-11-26 02:49:48,726 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-26 02:49:48,726 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-26 02:49:48,727 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-26 02:49:48,727 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-26 02:49:48,727 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-26 02:49:48,727 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-26 02:49:48,727 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-26 02:49:48,728 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-26 02:49:48,728 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-26 02:49:48,729 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-26 02:49:48,729 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-26 02:49:48,729 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-26 02:49:48,729 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-26 02:49:48,729 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-26 02:49:48,730 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-26 02:49:48,730 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-26 02:49:48,730 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-11-26 02:49:48,730 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-11-26 02:49:48,731 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-11-26 02:49:48,731 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-26 02:49:48,731 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-26 02:49:48,731 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-26 02:49:48,731 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-26 02:49:48,732 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-26 02:49:48,732 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-26 02:49:48,732 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-26 02:49:48,732 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-26 02:49:48,732 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-26 02:49:48,733 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-26 02:49:48,733 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-26 02:49:48,733 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-26 02:49:48,733 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2019-11-26 02:49:48,734 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-11-26 02:49:48,734 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-26 02:49:48,734 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-26 02:49:48,734 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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_8f60ec9b-18a8-4c3a-a16c-96f10a0764ea/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 46b366fd2d10429563cb722af2c8528eb816bb82 [2019-11-26 02:49:49,010 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-26 02:49:49,020 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-26 02:49:49,028 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-26 02:49:49,029 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-26 02:49:49,030 INFO L275 PluginConnector]: CDTParser initialized [2019-11-26 02:49:49,030 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_8f60ec9b-18a8-4c3a-a16c-96f10a0764ea/bin/utaipan/../../sv-benchmarks/c/loop-floats-scientific-comp/loop2-1.c [2019-11-26 02:49:49,088 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_8f60ec9b-18a8-4c3a-a16c-96f10a0764ea/bin/utaipan/data/1496a4131/d3f75239a25946198318bba2ffed4379/FLAGf48293d12 [2019-11-26 02:49:49,420 INFO L306 CDTParser]: Found 1 translation units. [2019-11-26 02:49:49,420 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_8f60ec9b-18a8-4c3a-a16c-96f10a0764ea/sv-benchmarks/c/loop-floats-scientific-comp/loop2-1.c [2019-11-26 02:49:49,426 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_8f60ec9b-18a8-4c3a-a16c-96f10a0764ea/bin/utaipan/data/1496a4131/d3f75239a25946198318bba2ffed4379/FLAGf48293d12 [2019-11-26 02:49:49,814 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_8f60ec9b-18a8-4c3a-a16c-96f10a0764ea/bin/utaipan/data/1496a4131/d3f75239a25946198318bba2ffed4379 [2019-11-26 02:49:49,816 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-26 02:49:49,817 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-26 02:49:49,818 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-26 02:49:49,818 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-26 02:49:49,822 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-26 02:49:49,823 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 02:49:49" (1/1) ... [2019-11-26 02:49:49,825 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@313d6228 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:49:49, skipping insertion in model container [2019-11-26 02:49:49,826 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 02:49:49" (1/1) ... [2019-11-26 02:49:49,833 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-26 02:49:49,849 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-26 02:49:50,047 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-26 02:49:50,054 INFO L201 MainTranslator]: Completed pre-run [2019-11-26 02:49:50,082 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-26 02:49:50,102 INFO L205 MainTranslator]: Completed translation [2019-11-26 02:49:50,103 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:49:50 WrapperNode [2019-11-26 02:49:50,103 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-26 02:49:50,103 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-26 02:49:50,104 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-26 02:49:50,104 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-26 02:49:50,112 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:49:50" (1/1) ... [2019-11-26 02:49:50,121 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:49:50" (1/1) ... [2019-11-26 02:49:50,228 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-26 02:49:50,228 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-26 02:49:50,229 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-26 02:49:50,229 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-26 02:49:50,237 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:49:50" (1/1) ... [2019-11-26 02:49:50,238 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:49:50" (1/1) ... [2019-11-26 02:49:50,240 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:49:50" (1/1) ... [2019-11-26 02:49:50,240 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:49:50" (1/1) ... [2019-11-26 02:49:50,246 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:49:50" (1/1) ... [2019-11-26 02:49:50,254 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:49:50" (1/1) ... [2019-11-26 02:49:50,256 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:49:50" (1/1) ... [2019-11-26 02:49:50,262 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-26 02:49:50,264 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-26 02:49:50,265 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-26 02:49:50,265 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-26 02:49:50,266 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:49:50" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8f60ec9b-18a8-4c3a-a16c-96f10a0764ea/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-26 02:49:50,324 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-26 02:49:50,324 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-26 02:49:54,527 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-26 02:49:54,528 INFO L284 CfgBuilder]: Removed 7 assume(true) statements. [2019-11-26 02:49:54,529 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:49:54 BoogieIcfgContainer [2019-11-26 02:49:54,529 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-26 02:49:54,530 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-26 02:49:54,530 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-26 02:49:54,533 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-26 02:49:54,533 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 02:49:49" (1/3) ... [2019-11-26 02:49:54,534 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7760f270 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 02:49:54, skipping insertion in model container [2019-11-26 02:49:54,534 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:49:50" (2/3) ... [2019-11-26 02:49:54,535 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7760f270 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 02:49:54, skipping insertion in model container [2019-11-26 02:49:54,535 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:49:54" (3/3) ... [2019-11-26 02:49:54,536 INFO L109 eAbstractionObserver]: Analyzing ICFG loop2-1.c [2019-11-26 02:49:54,546 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-26 02:49:54,552 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-26 02:49:54,562 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-26 02:49:54,581 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-26 02:49:54,581 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-26 02:49:54,581 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-26 02:49:54,581 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-26 02:49:54,582 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-26 02:49:54,582 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-26 02:49:54,582 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-26 02:49:54,582 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-26 02:49:54,595 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states. [2019-11-26 02:49:54,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-11-26 02:49:54,600 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:49:54,600 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-11-26 02:49:54,601 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:49:54,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:49:54,607 INFO L82 PathProgramCache]: Analyzing trace with hash 890122407, now seen corresponding path program 1 times [2019-11-26 02:49:54,617 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-11-26 02:49:54,617 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2053200893] [2019-11-26 02:49:54,617 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8f60ec9b-18a8-4c3a-a16c-96f10a0764ea/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 [2019-11-26 02:49:54,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:49:54,760 INFO L255 TraceCheckSpWp]: Trace formula consists of 17 conjuncts, 1 conjunts are in the unsatisfiable core [2019-11-26 02:49:54,763 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:49:54,774 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:49:54,774 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:49:54,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:49:54,777 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2053200893] [2019-11-26 02:49:54,778 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:49:54,778 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2019-11-26 02:49:54,780 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67157795] [2019-11-26 02:49:54,783 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-26 02:49:54,783 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-11-26 02:49:54,796 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-26 02:49:54,796 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-26 02:49:54,798 INFO L87 Difference]: Start difference. First operand 14 states. Second operand 2 states. [2019-11-26 02:49:54,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:49:54,811 INFO L93 Difference]: Finished difference Result 22 states and 26 transitions. [2019-11-26 02:49:54,811 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-26 02:49:54,812 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 6 [2019-11-26 02:49:54,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:49:54,820 INFO L225 Difference]: With dead ends: 22 [2019-11-26 02:49:54,821 INFO L226 Difference]: Without dead ends: 10 [2019-11-26 02:49:54,824 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-26 02:49:54,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2019-11-26 02:49:54,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2019-11-26 02:49:54,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2019-11-26 02:49:54,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 11 transitions. [2019-11-26 02:49:54,854 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 11 transitions. Word has length 6 [2019-11-26 02:49:54,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:49:54,854 INFO L462 AbstractCegarLoop]: Abstraction has 10 states and 11 transitions. [2019-11-26 02:49:54,854 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-26 02:49:54,855 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 11 transitions. [2019-11-26 02:49:54,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-11-26 02:49:54,855 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:49:54,855 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:49:55,069 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2019-11-26 02:49:55,070 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:49:55,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:49:55,070 INFO L82 PathProgramCache]: Analyzing trace with hash 642088082, now seen corresponding path program 1 times [2019-11-26 02:49:55,070 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-11-26 02:49:55,071 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [149000903] [2019-11-26 02:49:55,071 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8f60ec9b-18a8-4c3a-a16c-96f10a0764ea/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 [2019-11-26 02:49:55,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-26 02:49:56,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-26 02:49:56,581 INFO L174 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2019-11-26 02:49:56,582 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-26 02:49:56,783 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2019-11-26 02:49:56,808 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.11 02:49:56 BoogieIcfgContainer [2019-11-26 02:49:56,809 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-26 02:49:56,809 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-26 02:49:56,809 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-26 02:49:56,809 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-26 02:49:56,810 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:49:54" (3/4) ... [2019-11-26 02:49:56,812 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-26 02:49:56,856 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_8f60ec9b-18a8-4c3a-a16c-96f10a0764ea/bin/utaipan/witness.graphml [2019-11-26 02:49:56,856 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-26 02:49:56,858 INFO L168 Benchmark]: Toolchain (without parser) took 7040.89 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 175.1 MB). Free memory was 960.4 MB in the beginning and 1.1 GB in the end (delta: -152.1 MB). Peak memory consumption was 23.0 MB. Max. memory is 11.5 GB. [2019-11-26 02:49:56,859 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 1.0 GB. Free memory is still 987.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-26 02:49:56,860 INFO L168 Benchmark]: CACSL2BoogieTranslator took 284.99 ms. Allocated memory is still 1.0 GB. Free memory was 960.4 MB in the beginning and 949.7 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-11-26 02:49:56,860 INFO L168 Benchmark]: Boogie Procedure Inliner took 124.86 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 175.1 MB). Free memory was 949.7 MB in the beginning and 1.2 GB in the end (delta: -221.7 MB). Peak memory consumption was 15.3 MB. Max. memory is 11.5 GB. [2019-11-26 02:49:56,861 INFO L168 Benchmark]: Boogie Preprocessor took 35.22 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. [2019-11-26 02:49:56,862 INFO L168 Benchmark]: RCFGBuilder took 4265.14 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 13.6 MB). Peak memory consumption was 13.6 MB. Max. memory is 11.5 GB. [2019-11-26 02:49:56,862 INFO L168 Benchmark]: TraceAbstraction took 2278.96 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 38.6 MB). Peak memory consumption was 38.6 MB. Max. memory is 11.5 GB. [2019-11-26 02:49:56,863 INFO L168 Benchmark]: Witness Printer took 47.30 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-26 02:49:56,866 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 1.0 GB. Free memory is still 987.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 284.99 ms. Allocated memory is still 1.0 GB. Free memory was 960.4 MB in the beginning and 949.7 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 124.86 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 175.1 MB). Free memory was 949.7 MB in the beginning and 1.2 GB in the end (delta: -221.7 MB). Peak memory consumption was 15.3 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 35.22 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. * RCFGBuilder took 4265.14 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 13.6 MB). Peak memory consumption was 13.6 MB. Max. memory is 11.5 GB. * TraceAbstraction took 2278.96 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 38.6 MB). Peak memory consumption was 38.6 MB. Max. memory is 11.5 GB. * Witness Printer took 47.30 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 7]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L9] float pi = 3.14159 ; VAL [pi=3.141590118408203] [L15] float x = __VERIFIER_nondet_float() ; [L16] float octant = pi/3 ; [L18] float oddExp = x ; [L19] float evenExp = 1.0 ; [L20] float term = x ; [L21] unsigned int count = 2 ; [L22] int multFactor = 0 ; [L23] int temp ; VAL [pi=3.141590118408203] [L25] COND TRUE 1 [L27] term = term * (x/count) VAL [pi=3.141590118408203] [L28] EXPR (count>>1 % 2 == 0) ? 1 : -1 VAL [pi=3.141590118408203] [L28] multFactor = (count>>1 % 2 == 0) ? 1 : -1 [L30] evenExp = evenExp + multFactor*term [L32] count++ [L34] term = term * (x/count) [L36] oddExp = oddExp + multFactor*term [L38] count++ [L40] temp = __VERIFIER_nondet_int() [L41] COND TRUE temp == 0 VAL [pi=3.141590118408203] [L7] COND TRUE !(cond) VAL [pi=3.141590118408203] [L7] __VERIFIER_error() VAL [pi=3.141590118408203] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 14 locations, 1 error locations. Result: UNSAFE, OverallTime: 2.2s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 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, 10 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=14occurred 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, 0.7s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 15 NumberOfCodeBlocks, 15 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 10 ConstructedInterpolants, 0 QuantifiedInterpolants, 50 SizeOfPredicates, 0 NumberOfNonLiveVariables, 17 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, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...