./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/float_req_bl_1210.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_e2b3b5f6-dd3c-4bfe-a573-929a3c55f033/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_e2b3b5f6-dd3c-4bfe-a573-929a3c55f033/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_e2b3b5f6-dd3c-4bfe-a573-929a3c55f033/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_e2b3b5f6-dd3c-4bfe-a573-929a3c55f033/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1210.c -s /tmp/vcloud-vcloud-master/worker/run_dir_e2b3b5f6-dd3c-4bfe-a573-929a3c55f033/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_e2b3b5f6-dd3c-4bfe-a573-929a3c55f033/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 6a2ce6cad1ff26c462bd542dafb3ac3798055daa .................................................................................................................................................................................................................................................................................................................... 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_e2b3b5f6-dd3c-4bfe-a573-929a3c55f033/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_e2b3b5f6-dd3c-4bfe-a573-929a3c55f033/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_e2b3b5f6-dd3c-4bfe-a573-929a3c55f033/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_e2b3b5f6-dd3c-4bfe-a573-929a3c55f033/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1210.c -s /tmp/vcloud-vcloud-master/worker/run_dir_e2b3b5f6-dd3c-4bfe-a573-929a3c55f033/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_e2b3b5f6-dd3c-4bfe-a573-929a3c55f033/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 6a2ce6cad1ff26c462bd542dafb3ac3798055daa ........................................................................................................................................................................................................................................................................................................................................................................................................................... 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 [2020-11-30 02:13:30,486 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 02:13:30,490 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 02:13:30,594 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 02:13:30,594 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 02:13:30,596 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 02:13:30,598 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 02:13:30,601 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 02:13:30,604 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 02:13:30,606 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 02:13:30,607 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 02:13:30,609 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 02:13:30,610 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 02:13:30,612 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 02:13:30,614 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 02:13:30,616 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 02:13:30,617 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 02:13:30,619 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 02:13:30,622 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 02:13:30,626 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 02:13:30,629 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 02:13:30,631 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 02:13:30,633 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 02:13:30,635 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 02:13:30,640 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 02:13:30,640 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 02:13:30,641 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 02:13:30,643 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 02:13:30,644 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 02:13:30,645 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 02:13:30,646 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 02:13:30,648 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 02:13:30,649 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 02:13:30,650 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 02:13:30,652 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 02:13:30,653 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 02:13:30,654 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 02:13:30,655 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 02:13:30,655 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 02:13:30,657 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 02:13:30,658 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 02:13:30,664 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_e2b3b5f6-dd3c-4bfe-a573-929a3c55f033/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-11-30 02:13:30,715 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 02:13:30,716 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 02:13:30,717 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-30 02:13:30,717 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-30 02:13:30,717 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-30 02:13:30,718 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-30 02:13:30,718 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-30 02:13:30,718 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-30 02:13:30,719 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-30 02:13:30,719 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-30 02:13:30,719 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-30 02:13:30,719 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-30 02:13:30,720 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-30 02:13:30,720 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-30 02:13:30,720 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-30 02:13:30,721 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 02:13:30,722 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-30 02:13:30,722 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-30 02:13:30,722 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-30 02:13:30,723 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 02:13:30,723 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-30 02:13:30,723 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-30 02:13:30,724 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-30 02:13:30,724 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-30 02:13:30,724 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-30 02:13:30,724 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-30 02:13:30,725 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 02:13:30,725 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-30 02:13:30,725 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 02:13:30,726 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-30 02:13:30,726 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-30 02:13:30,726 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 02:13:30,727 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 02:13:30,727 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-30 02:13:30,727 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-30 02:13:30,727 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-30 02:13:30,728 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-30 02:13:30,728 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-30 02:13:30,728 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 02:13:30,729 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-30 02:13:30,729 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_e2b3b5f6-dd3c-4bfe-a573-929a3c55f033/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_e2b3b5f6-dd3c-4bfe-a573-929a3c55f033/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6a2ce6cad1ff26c462bd542dafb3ac3798055daa [2020-11-30 02:13:31,075 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 02:13:31,117 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 02:13:31,125 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 02:13:31,126 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 02:13:31,127 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 02:13:31,129 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_e2b3b5f6-dd3c-4bfe-a573-929a3c55f033/bin/utaipan/../../sv-benchmarks/c/float-newlib/float_req_bl_1210.c [2020-11-30 02:13:31,215 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_e2b3b5f6-dd3c-4bfe-a573-929a3c55f033/bin/utaipan/data/762e506d7/a409f593a995430e9e0ab62276faa8b3/FLAG9ad625880 [2020-11-30 02:13:31,791 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 02:13:31,797 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_e2b3b5f6-dd3c-4bfe-a573-929a3c55f033/sv-benchmarks/c/float-newlib/float_req_bl_1210.c [2020-11-30 02:13:31,813 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_e2b3b5f6-dd3c-4bfe-a573-929a3c55f033/bin/utaipan/data/762e506d7/a409f593a995430e9e0ab62276faa8b3/FLAG9ad625880 [2020-11-30 02:13:32,112 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_e2b3b5f6-dd3c-4bfe-a573-929a3c55f033/bin/utaipan/data/762e506d7/a409f593a995430e9e0ab62276faa8b3 [2020-11-30 02:13:32,115 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 02:13:32,116 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-30 02:13:32,124 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 02:13:32,126 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 02:13:32,130 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 02:13:32,131 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 02:13:32" (1/1) ... [2020-11-30 02:13:32,133 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@595ed1bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:13:32, skipping insertion in model container [2020-11-30 02:13:32,133 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 02:13:32" (1/1) ... [2020-11-30 02:13:32,143 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 02:13:32,177 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 02:13:32,461 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 02:13:32,471 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 02:13:32,523 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 02:13:32,548 INFO L208 MainTranslator]: Completed translation [2020-11-30 02:13:32,550 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:13:32 WrapperNode [2020-11-30 02:13:32,551 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 02:13:32,552 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-30 02:13:32,553 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-30 02:13:32,553 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-30 02:13:32,562 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:13:32" (1/1) ... [2020-11-30 02:13:32,586 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:13:32" (1/1) ... [2020-11-30 02:13:32,629 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-30 02:13:32,633 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 02:13:32,633 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 02:13:32,634 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 02:13:32,643 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:13:32" (1/1) ... [2020-11-30 02:13:32,644 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:13:32" (1/1) ... [2020-11-30 02:13:32,659 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:13:32" (1/1) ... [2020-11-30 02:13:32,660 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:13:32" (1/1) ... [2020-11-30 02:13:32,677 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:13:32" (1/1) ... [2020-11-30 02:13:32,697 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:13:32" (1/1) ... [2020-11-30 02:13:32,700 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:13:32" (1/1) ... [2020-11-30 02:13:32,709 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 02:13:32,710 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 02:13:32,710 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 02:13:32,711 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 02:13:32,712 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:13:32" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e2b3b5f6-dd3c-4bfe-a573-929a3c55f033/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 [2020-11-30 02:13:32,779 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-30 02:13:32,780 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-30 02:13:32,780 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-11-30 02:13:32,780 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-30 02:13:32,780 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-11-30 02:13:32,781 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 02:13:32,781 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 02:13:32,781 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-30 02:13:32,782 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-30 02:13:33,455 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 02:13:33,456 INFO L298 CfgBuilder]: Removed 26 assume(true) statements. [2020-11-30 02:13:33,458 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 02:13:33 BoogieIcfgContainer [2020-11-30 02:13:33,458 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 02:13:33,460 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-30 02:13:33,460 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-30 02:13:33,467 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-30 02:13:33,467 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 02:13:32" (1/3) ... [2020-11-30 02:13:33,468 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@195705f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 02:13:33, skipping insertion in model container [2020-11-30 02:13:33,468 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:13:32" (2/3) ... [2020-11-30 02:13:33,469 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@195705f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 02:13:33, skipping insertion in model container [2020-11-30 02:13:33,469 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 02:13:33" (3/3) ... [2020-11-30 02:13:33,471 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1210.c [2020-11-30 02:13:33,484 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-30 02:13:33,489 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-30 02:13:33,504 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-30 02:13:33,533 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-30 02:13:33,533 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-30 02:13:33,534 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-30 02:13:33,534 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-30 02:13:33,534 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-30 02:13:33,534 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-30 02:13:33,534 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-30 02:13:33,535 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-30 02:13:33,550 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states. [2020-11-30 02:13:33,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-30 02:13:33,557 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:13:33,557 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 02:13:33,558 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 02:13:33,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:13:33,565 INFO L82 PathProgramCache]: Analyzing trace with hash 1956391417, now seen corresponding path program 1 times [2020-11-30 02:13:33,576 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:13:33,577 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [676084617] [2020-11-30 02:13:33,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:13:33,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:13:33,738 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:13:33,739 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [676084617] [2020-11-30 02:13:33,740 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:13:33,740 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-30 02:13:33,741 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313579833] [2020-11-30 02:13:33,746 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-30 02:13:33,746 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:13:33,766 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-30 02:13:33,767 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-30 02:13:33,769 INFO L87 Difference]: Start difference. First operand 29 states. Second operand 2 states. [2020-11-30 02:13:33,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:13:33,801 INFO L93 Difference]: Finished difference Result 57 states and 91 transitions. [2020-11-30 02:13:33,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-30 02:13:33,803 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-11-30 02:13:33,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:13:33,814 INFO L225 Difference]: With dead ends: 57 [2020-11-30 02:13:33,814 INFO L226 Difference]: Without dead ends: 27 [2020-11-30 02:13:33,817 INFO L677 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 [2020-11-30 02:13:33,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-11-30 02:13:33,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2020-11-30 02:13:33,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-11-30 02:13:33,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 29 transitions. [2020-11-30 02:13:33,868 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 29 transitions. Word has length 10 [2020-11-30 02:13:33,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:13:33,869 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 29 transitions. [2020-11-30 02:13:33,869 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-30 02:13:33,869 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 29 transitions. [2020-11-30 02:13:33,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-30 02:13:33,871 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:13:33,871 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 02:13:33,871 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-30 02:13:33,872 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 02:13:33,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:13:33,873 INFO L82 PathProgramCache]: Analyzing trace with hash 1481624472, now seen corresponding path program 1 times [2020-11-30 02:13:33,873 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:13:33,873 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [102756377] [2020-11-30 02:13:33,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:13:33,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 02:13:33,964 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 02:13:34,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 02:13:34,068 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 02:13:34,123 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2020-11-30 02:13:34,123 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-30 02:13:34,124 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-30 02:13:34,163 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.11 02:13:34 BoogieIcfgContainer [2020-11-30 02:13:34,164 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-30 02:13:34,165 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 02:13:34,165 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 02:13:34,165 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 02:13:34,166 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 02:13:33" (3/4) ... [2020-11-30 02:13:34,170 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-30 02:13:34,170 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 02:13:34,173 INFO L168 Benchmark]: Toolchain (without parser) took 2055.28 ms. Allocated memory was 100.7 MB in the beginning and 121.6 MB in the end (delta: 21.0 MB). Free memory was 68.3 MB in the beginning and 89.2 MB in the end (delta: -20.9 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 02:13:34,174 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 71.3 MB. Free memory is still 33.4 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 02:13:34,175 INFO L168 Benchmark]: CACSL2BoogieTranslator took 426.87 ms. Allocated memory is still 100.7 MB. Free memory was 68.1 MB in the beginning and 75.2 MB in the end (delta: -7.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-30 02:13:34,176 INFO L168 Benchmark]: Boogie Procedure Inliner took 79.49 ms. Allocated memory is still 100.7 MB. Free memory was 75.2 MB in the beginning and 73.6 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 02:13:34,177 INFO L168 Benchmark]: Boogie Preprocessor took 76.48 ms. Allocated memory is still 100.7 MB. Free memory was 73.6 MB in the beginning and 71.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 02:13:34,178 INFO L168 Benchmark]: RCFGBuilder took 748.27 ms. Allocated memory is still 100.7 MB. Free memory was 71.6 MB in the beginning and 42.7 MB in the end (delta: 28.8 MB). Peak memory consumption was 29.4 MB. Max. memory is 16.1 GB. [2020-11-30 02:13:34,179 INFO L168 Benchmark]: TraceAbstraction took 703.79 ms. Allocated memory was 100.7 MB in the beginning and 121.6 MB in the end (delta: 21.0 MB). Free memory was 42.2 MB in the beginning and 89.2 MB in the end (delta: -47.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 02:13:34,180 INFO L168 Benchmark]: Witness Printer took 6.00 ms. Allocated memory is still 121.6 MB. Free memory is still 89.2 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 02:13:34,185 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 71.3 MB. Free memory is still 33.4 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 426.87 ms. Allocated memory is still 100.7 MB. Free memory was 68.1 MB in the beginning and 75.2 MB in the end (delta: -7.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 79.49 ms. Allocated memory is still 100.7 MB. Free memory was 75.2 MB in the beginning and 73.6 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 76.48 ms. Allocated memory is still 100.7 MB. Free memory was 73.6 MB in the beginning and 71.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 748.27 ms. Allocated memory is still 100.7 MB. Free memory was 71.6 MB in the beginning and 42.7 MB in the end (delta: 28.8 MB). Peak memory consumption was 29.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 703.79 ms. Allocated memory was 100.7 MB in the beginning and 121.6 MB in the end (delta: 21.0 MB). Free memory was 42.2 MB in the beginning and 89.2 MB in the end (delta: -47.0 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 6.00 ms. Allocated memory is still 121.6 MB. Free memory is still 89.2 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 3]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 75, overapproximation of someBinaryArithmeticFLOAToperation at line 82, overapproximation of bitwiseAnd at line 28. Possible FailurePath: [L13] static const float one_modf = 1.0; [L82] float x = 0.0f / 0.0f; [L83] float iptr; [L16] __int32_t i0, j0; [L17] __uint32_t i; VAL [one_modf=1] [L19] ieee_float_shape_type gf_u; [L20] gf_u.value = (x) [L21] EXPR gf_u.word [L21] (i0) = gf_u.word [L23] j0 = ((i0 >> 23) & 0xff) - 0x7f VAL [one_modf=1] [L24] COND TRUE j0 < 23 VAL [one_modf=1] [L25] COND TRUE j0 < 0 VAL [one_modf=1] [L27] ieee_float_shape_type sf_u; [L28] sf_u.word = (i0 & 0x80000000) [L29] EXPR sf_u.value [L29] (*iptr) = sf_u.value [L31] return x; VAL [one_modf=1] [L84] float res = modf_float(x, &iptr); [L87] EXPR \read(iptr) [L75] return x != x; [L87] isnan_float(iptr) && !isnan_float(res) [L75] return x != x; [L87] isnan_float(iptr) && !isnan_float(res) VAL [one_modf=1] [L87] COND TRUE isnan_float(iptr) && !isnan_float(res) [L3] __assert_fail("0", "float_req_bl_1210.c", 3, "reach_error") VAL [one_modf=1] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 29 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.5s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 31 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=29occurred 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, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 22 NumberOfCodeBlocks, 22 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 9 ConstructedInterpolants, 0 QuantifiedInterpolants, 81 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, 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 [2020-11-30 02:13:37,056 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 02:13:37,059 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 02:13:37,116 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 02:13:37,117 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 02:13:37,128 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 02:13:37,131 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 02:13:37,136 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 02:13:37,141 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 02:13:37,148 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 02:13:37,150 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 02:13:37,151 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 02:13:37,152 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 02:13:37,153 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 02:13:37,155 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 02:13:37,156 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 02:13:37,157 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 02:13:37,159 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 02:13:37,161 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 02:13:37,164 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 02:13:37,167 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 02:13:37,168 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 02:13:37,170 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 02:13:37,171 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 02:13:37,176 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 02:13:37,176 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 02:13:37,177 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 02:13:37,178 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 02:13:37,179 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 02:13:37,180 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 02:13:37,181 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 02:13:37,182 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 02:13:37,183 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 02:13:37,184 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 02:13:37,186 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 02:13:37,187 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 02:13:37,188 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 02:13:37,188 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 02:13:37,189 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 02:13:37,190 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 02:13:37,191 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 02:13:37,193 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_e2b3b5f6-dd3c-4bfe-a573-929a3c55f033/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2020-11-30 02:13:37,226 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 02:13:37,226 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 02:13:37,228 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-30 02:13:37,228 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-30 02:13:37,229 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-30 02:13:37,229 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-30 02:13:37,229 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-30 02:13:37,229 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-30 02:13:37,230 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-30 02:13:37,232 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 02:13:37,233 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-30 02:13:37,233 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-30 02:13:37,234 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 02:13:37,234 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-30 02:13:37,234 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-30 02:13:37,234 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-30 02:13:37,235 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-30 02:13:37,235 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-11-30 02:13:37,235 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-11-30 02:13:37,236 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-30 02:13:37,236 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-30 02:13:37,236 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 02:13:37,236 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-30 02:13:37,237 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 02:13:37,237 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-30 02:13:37,237 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-30 02:13:37,238 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-30 02:13:37,238 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 02:13:37,238 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 02:13:37,239 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-30 02:13:37,239 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-30 02:13:37,239 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2020-11-30 02:13:37,240 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-11-30 02:13:37,240 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-30 02:13:37,240 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 02:13:37,241 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-30 02:13:37,241 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_e2b3b5f6-dd3c-4bfe-a573-929a3c55f033/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_e2b3b5f6-dd3c-4bfe-a573-929a3c55f033/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6a2ce6cad1ff26c462bd542dafb3ac3798055daa [2020-11-30 02:13:37,747 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 02:13:37,786 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 02:13:37,791 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 02:13:37,792 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 02:13:37,794 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 02:13:37,794 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_e2b3b5f6-dd3c-4bfe-a573-929a3c55f033/bin/utaipan/../../sv-benchmarks/c/float-newlib/float_req_bl_1210.c [2020-11-30 02:13:37,888 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_e2b3b5f6-dd3c-4bfe-a573-929a3c55f033/bin/utaipan/data/f2707e6f6/c744a4f9984b4c18b73413d68c412788/FLAG556818770 [2020-11-30 02:13:38,573 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 02:13:38,573 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_e2b3b5f6-dd3c-4bfe-a573-929a3c55f033/sv-benchmarks/c/float-newlib/float_req_bl_1210.c [2020-11-30 02:13:38,587 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_e2b3b5f6-dd3c-4bfe-a573-929a3c55f033/bin/utaipan/data/f2707e6f6/c744a4f9984b4c18b73413d68c412788/FLAG556818770 [2020-11-30 02:13:38,899 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_e2b3b5f6-dd3c-4bfe-a573-929a3c55f033/bin/utaipan/data/f2707e6f6/c744a4f9984b4c18b73413d68c412788 [2020-11-30 02:13:38,904 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 02:13:38,906 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-30 02:13:38,917 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 02:13:38,917 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 02:13:38,921 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 02:13:38,923 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 02:13:38" (1/1) ... [2020-11-30 02:13:38,927 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@24b758a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:13:38, skipping insertion in model container [2020-11-30 02:13:38,928 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 02:13:38" (1/1) ... [2020-11-30 02:13:38,937 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 02:13:38,967 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 02:13:39,145 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 02:13:39,165 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 02:13:39,204 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 02:13:39,225 INFO L208 MainTranslator]: Completed translation [2020-11-30 02:13:39,226 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:13:39 WrapperNode [2020-11-30 02:13:39,226 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 02:13:39,227 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-30 02:13:39,228 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-30 02:13:39,228 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-30 02:13:39,236 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:13:39" (1/1) ... [2020-11-30 02:13:39,261 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:13:39" (1/1) ... [2020-11-30 02:13:39,352 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-30 02:13:39,360 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 02:13:39,361 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 02:13:39,362 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 02:13:39,373 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:13:39" (1/1) ... [2020-11-30 02:13:39,373 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:13:39" (1/1) ... [2020-11-30 02:13:39,400 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:13:39" (1/1) ... [2020-11-30 02:13:39,400 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:13:39" (1/1) ... [2020-11-30 02:13:39,427 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:13:39" (1/1) ... [2020-11-30 02:13:39,433 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:13:39" (1/1) ... [2020-11-30 02:13:39,441 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:13:39" (1/1) ... [2020-11-30 02:13:39,452 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 02:13:39,458 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 02:13:39,459 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 02:13:39,460 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 02:13:39,461 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:13:39" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e2b3b5f6-dd3c-4bfe-a573-929a3c55f033/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 [2020-11-30 02:13:39,545 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-11-30 02:13:39,545 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-30 02:13:39,546 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2020-11-30 02:13:39,546 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-11-30 02:13:39,546 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 02:13:39,547 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 02:13:39,547 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2020-11-30 02:13:39,547 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2020-11-30 02:13:39,547 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-30 02:13:40,486 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 02:13:40,486 INFO L298 CfgBuilder]: Removed 26 assume(true) statements. [2020-11-30 02:13:40,488 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 02:13:40 BoogieIcfgContainer [2020-11-30 02:13:40,489 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 02:13:40,491 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-30 02:13:40,491 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-30 02:13:40,494 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-30 02:13:40,494 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 02:13:38" (1/3) ... [2020-11-30 02:13:40,495 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f311a86 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 02:13:40, skipping insertion in model container [2020-11-30 02:13:40,495 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:13:39" (2/3) ... [2020-11-30 02:13:40,496 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f311a86 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 02:13:40, skipping insertion in model container [2020-11-30 02:13:40,496 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 02:13:40" (3/3) ... [2020-11-30 02:13:40,497 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1210.c [2020-11-30 02:13:40,507 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-30 02:13:40,511 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-30 02:13:40,526 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-30 02:13:40,554 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-30 02:13:40,555 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-30 02:13:40,555 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-30 02:13:40,555 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-30 02:13:40,555 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-30 02:13:40,555 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-30 02:13:40,555 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-30 02:13:40,556 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-30 02:13:40,568 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states. [2020-11-30 02:13:40,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-30 02:13:40,574 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:13:40,575 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 02:13:40,575 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 02:13:40,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:13:40,582 INFO L82 PathProgramCache]: Analyzing trace with hash -556426464, now seen corresponding path program 1 times [2020-11-30 02:13:40,596 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-30 02:13:40,596 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [336428311] [2020-11-30 02:13:40,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e2b3b5f6-dd3c-4bfe-a573-929a3c55f033/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 [2020-11-30 02:13:40,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:13:40,824 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 1 conjunts are in the unsatisfiable core [2020-11-30 02:13:40,830 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 02:13:40,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:13:40,850 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 02:13:40,855 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:13:40,857 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [336428311] [2020-11-30 02:13:40,857 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:13:40,858 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-11-30 02:13:40,859 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842950921] [2020-11-30 02:13:40,864 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-30 02:13:40,864 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-30 02:13:40,879 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-30 02:13:40,880 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-30 02:13:40,882 INFO L87 Difference]: Start difference. First operand 35 states. Second operand 2 states. [2020-11-30 02:13:40,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:13:40,905 INFO L93 Difference]: Finished difference Result 67 states and 103 transitions. [2020-11-30 02:13:40,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-30 02:13:40,906 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 13 [2020-11-30 02:13:40,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:13:40,917 INFO L225 Difference]: With dead ends: 67 [2020-11-30 02:13:40,918 INFO L226 Difference]: Without dead ends: 31 [2020-11-30 02:13:40,921 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-30 02:13:40,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-11-30 02:13:40,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2020-11-30 02:13:40,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-11-30 02:13:40,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 34 transitions. [2020-11-30 02:13:40,962 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 34 transitions. Word has length 13 [2020-11-30 02:13:40,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:13:40,962 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 34 transitions. [2020-11-30 02:13:40,962 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-30 02:13:40,962 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 34 transitions. [2020-11-30 02:13:40,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-30 02:13:40,963 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:13:40,964 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 02:13:41,182 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-11-30 02:13:41,182 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 02:13:41,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:13:41,183 INFO L82 PathProgramCache]: Analyzing trace with hash -56818241, now seen corresponding path program 1 times [2020-11-30 02:13:41,185 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-30 02:13:41,185 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1537403127] [2020-11-30 02:13:41,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e2b3b5f6-dd3c-4bfe-a573-929a3c55f033/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 [2020-11-30 02:13:41,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:13:41,314 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 8 conjunts are in the unsatisfiable core [2020-11-30 02:13:41,323 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 02:13:41,523 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:13:41,523 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 02:13:41,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:13:41,697 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1537403127] [2020-11-30 02:13:41,697 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:13:41,697 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2020-11-30 02:13:41,697 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163457464] [2020-11-30 02:13:41,699 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-30 02:13:41,699 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-30 02:13:41,700 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-30 02:13:41,701 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-11-30 02:13:41,701 INFO L87 Difference]: Start difference. First operand 31 states and 34 transitions. Second operand 8 states. [2020-11-30 02:13:42,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:13:42,187 INFO L93 Difference]: Finished difference Result 38 states and 41 transitions. [2020-11-30 02:13:42,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-30 02:13:42,189 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 15 [2020-11-30 02:13:42,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:13:42,190 INFO L225 Difference]: With dead ends: 38 [2020-11-30 02:13:42,191 INFO L226 Difference]: Without dead ends: 18 [2020-11-30 02:13:42,193 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-11-30 02:13:42,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2020-11-30 02:13:42,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2020-11-30 02:13:42,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-11-30 02:13:42,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2020-11-30 02:13:42,207 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 15 [2020-11-30 02:13:42,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:13:42,207 INFO L481 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2020-11-30 02:13:42,207 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-30 02:13:42,208 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2020-11-30 02:13:42,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-30 02:13:42,213 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:13:42,213 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 02:13:42,431 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-11-30 02:13:42,431 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 02:13:42,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:13:42,432 INFO L82 PathProgramCache]: Analyzing trace with hash 1951048762, now seen corresponding path program 1 times [2020-11-30 02:13:42,432 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-30 02:13:42,433 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1352030984] [2020-11-30 02:13:42,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e2b3b5f6-dd3c-4bfe-a573-929a3c55f033/bin/utaipan/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2020-11-30 02:13:42,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:13:42,644 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-30 02:13:42,646 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 02:13:42,657 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:13:42,657 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 02:13:42,660 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:13:42,661 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1352030984] [2020-11-30 02:13:42,661 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:13:42,661 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2020-11-30 02:13:42,661 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505203187] [2020-11-30 02:13:42,662 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 02:13:42,662 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-30 02:13:42,663 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 02:13:42,663 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 02:13:42,664 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand 3 states. [2020-11-30 02:13:42,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:13:42,696 INFO L93 Difference]: Finished difference Result 21 states and 20 transitions. [2020-11-30 02:13:42,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 02:13:42,696 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2020-11-30 02:13:42,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:13:42,697 INFO L225 Difference]: With dead ends: 21 [2020-11-30 02:13:42,697 INFO L226 Difference]: Without dead ends: 18 [2020-11-30 02:13:42,698 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 02:13:42,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2020-11-30 02:13:42,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2020-11-30 02:13:42,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-11-30 02:13:42,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 17 transitions. [2020-11-30 02:13:42,702 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 17 transitions. Word has length 16 [2020-11-30 02:13:42,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:13:42,703 INFO L481 AbstractCegarLoop]: Abstraction has 18 states and 17 transitions. [2020-11-30 02:13:42,703 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 02:13:42,703 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 17 transitions. [2020-11-30 02:13:42,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-30 02:13:42,704 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:13:42,704 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 02:13:42,919 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-11-30 02:13:42,920 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 02:13:42,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:13:42,921 INFO L82 PathProgramCache]: Analyzing trace with hash 352844637, now seen corresponding path program 1 times [2020-11-30 02:13:42,921 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-30 02:13:42,921 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1534361092] [2020-11-30 02:13:42,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e2b3b5f6-dd3c-4bfe-a573-929a3c55f033/bin/utaipan/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2020-11-30 02:13:43,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 02:13:43,211 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 02:13:43,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 02:13:43,517 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 02:13:43,589 INFO L173 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2020-11-30 02:13:43,589 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-30 02:13:43,790 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-11-30 02:13:43,840 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.11 02:13:43 BoogieIcfgContainer [2020-11-30 02:13:43,840 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-30 02:13:43,841 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 02:13:43,841 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 02:13:43,841 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 02:13:43,842 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 02:13:40" (3/4) ... [2020-11-30 02:13:43,844 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-30 02:13:43,922 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_e2b3b5f6-dd3c-4bfe-a573-929a3c55f033/bin/utaipan/witness.graphml [2020-11-30 02:13:43,922 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 02:13:43,925 INFO L168 Benchmark]: Toolchain (without parser) took 5017.87 ms. Allocated memory was 56.6 MB in the beginning and 83.9 MB in the end (delta: 27.3 MB). Free memory was 36.2 MB in the beginning and 35.7 MB in the end (delta: 526.9 kB). Peak memory consumption was 27.0 MB. Max. memory is 16.1 GB. [2020-11-30 02:13:43,926 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 56.6 MB. Free memory is still 39.5 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 02:13:43,926 INFO L168 Benchmark]: CACSL2BoogieTranslator took 309.84 ms. Allocated memory is still 56.6 MB. Free memory was 35.9 MB in the beginning and 24.5 MB in the end (delta: 11.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-30 02:13:43,927 INFO L168 Benchmark]: Boogie Procedure Inliner took 130.64 ms. Allocated memory was 56.6 MB in the beginning and 69.2 MB in the end (delta: 12.6 MB). Free memory was 24.5 MB in the beginning and 52.9 MB in the end (delta: -28.4 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-30 02:13:43,928 INFO L168 Benchmark]: Boogie Preprocessor took 97.51 ms. Allocated memory is still 69.2 MB. Free memory was 52.9 MB in the beginning and 51.1 MB in the end (delta: 1.7 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 02:13:43,929 INFO L168 Benchmark]: RCFGBuilder took 1030.56 ms. Allocated memory is still 69.2 MB. Free memory was 51.1 MB in the beginning and 45.3 MB in the end (delta: 5.9 MB). Peak memory consumption was 20.3 MB. Max. memory is 16.1 GB. [2020-11-30 02:13:43,930 INFO L168 Benchmark]: TraceAbstraction took 3349.49 ms. Allocated memory was 69.2 MB in the beginning and 83.9 MB in the end (delta: 14.7 MB). Free memory was 45.0 MB in the beginning and 38.4 MB in the end (delta: 6.6 MB). Peak memory consumption was 22.2 MB. Max. memory is 16.1 GB. [2020-11-30 02:13:43,930 INFO L168 Benchmark]: Witness Printer took 82.04 ms. Allocated memory is still 83.9 MB. Free memory was 38.4 MB in the beginning and 35.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 02:13:43,934 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 56.6 MB. Free memory is still 39.5 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 309.84 ms. Allocated memory is still 56.6 MB. Free memory was 35.9 MB in the beginning and 24.5 MB in the end (delta: 11.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 130.64 ms. Allocated memory was 56.6 MB in the beginning and 69.2 MB in the end (delta: 12.6 MB). Free memory was 24.5 MB in the beginning and 52.9 MB in the end (delta: -28.4 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 97.51 ms. Allocated memory is still 69.2 MB. Free memory was 52.9 MB in the beginning and 51.1 MB in the end (delta: 1.7 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 1030.56 ms. Allocated memory is still 69.2 MB. Free memory was 51.1 MB in the beginning and 45.3 MB in the end (delta: 5.9 MB). Peak memory consumption was 20.3 MB. Max. memory is 16.1 GB. * TraceAbstraction took 3349.49 ms. Allocated memory was 69.2 MB in the beginning and 83.9 MB in the end (delta: 14.7 MB). Free memory was 45.0 MB in the beginning and 38.4 MB in the end (delta: 6.6 MB). Peak memory consumption was 22.2 MB. Max. memory is 16.1 GB. * Witness Printer took 82.04 ms. Allocated memory is still 83.9 MB. Free memory was 38.4 MB in the beginning and 35.7 MB in the end (delta: 2.7 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: 3]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L13] static const float one_modf = 1.0; VAL [one_modf=1.0] [L82] float x = 0.0f / 0.0f; [L83] float iptr; [L16] __int32_t i0, j0; [L17] __uint32_t i; VAL [one_modf=1.0] [L19] ieee_float_shape_type gf_u; [L20] gf_u.value = (x) [L21] EXPR gf_u.word [L21] (i0) = gf_u.word [L23] j0 = ((i0 >> 23) & 0xff) - 0x7f VAL [one_modf=1.0] [L24] COND FALSE !(j0 < 23) [L58] __uint32_t ix; [L59] *iptr = x * one_modf VAL [one_modf=1.0] [L61] ieee_float_shape_type gf_u; [L62] gf_u.value = (x) [L63] EXPR gf_u.word [L63] (ix) = gf_u.word [L66] ieee_float_shape_type sf_u; [L67] sf_u.word = (ix & 0x80000000) [L68] EXPR sf_u.value [L68] (x) = sf_u.value [L70] return x; VAL [one_modf=1.0] [L84] float res = modf_float(x, &iptr); [L87] EXPR \read(iptr) [L75] return x != x; VAL [one_modf=1.0] [L87] isnan_float(iptr) && !isnan_float(res) [L75] return x != x; VAL [one_modf=1.0] [L87] isnan_float(iptr) && !isnan_float(res) VAL [one_modf=1.0] [L87] COND TRUE isnan_float(iptr) && !isnan_float(res) [L3] __assert_fail("0", "float_req_bl_1210.c", 3, "reach_error") VAL [one_modf=1.0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 35 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 3.2s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 69 SDtfs, 46 SDslu, 34 SDs, 0 SdLazy, 17 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 85 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=35occurred 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, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 61 NumberOfCodeBlocks, 61 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 82 ConstructedInterpolants, 5 QuantifiedInterpolants, 2476 SizeOfPredicates, 8 NumberOfNonLiveVariables, 204 ConjunctsInSsa, 11 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 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...