./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/float_req_bl_1232b.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_efcb7189-904f-4afd-ae59-872f97a71fe7/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_efcb7189-904f-4afd-ae59-872f97a71fe7/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_efcb7189-904f-4afd-ae59-872f97a71fe7/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_efcb7189-904f-4afd-ae59-872f97a71fe7/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1232b.c -s /tmp/vcloud-vcloud-master/worker/run_dir_efcb7189-904f-4afd-ae59-872f97a71fe7/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_efcb7189-904f-4afd-ae59-872f97a71fe7/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 38561929b5142acce65cab4da64e7c4ae5f17524 ...................................................................................................................................................................................................................................................................................................... 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_efcb7189-904f-4afd-ae59-872f97a71fe7/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_efcb7189-904f-4afd-ae59-872f97a71fe7/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_efcb7189-904f-4afd-ae59-872f97a71fe7/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_efcb7189-904f-4afd-ae59-872f97a71fe7/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1232b.c -s /tmp/vcloud-vcloud-master/worker/run_dir_efcb7189-904f-4afd-ae59-872f97a71fe7/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_efcb7189-904f-4afd-ae59-872f97a71fe7/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 38561929b5142acce65cab4da64e7c4ae5f17524 ..................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-22 13:06:26,525 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-22 13:06:26,529 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-22 13:06:26,591 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-22 13:06:26,592 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-22 13:06:26,599 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-22 13:06:26,602 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-22 13:06:26,607 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-22 13:06:26,609 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-22 13:06:26,618 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-22 13:06:26,619 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-22 13:06:26,621 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-22 13:06:26,621 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-22 13:06:26,625 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-22 13:06:26,627 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-22 13:06:26,630 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-22 13:06:26,631 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-22 13:06:26,635 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-22 13:06:26,639 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-22 13:06:26,649 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-22 13:06:26,651 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-22 13:06:26,653 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-22 13:06:26,655 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-22 13:06:26,656 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-22 13:06:26,659 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-22 13:06:26,660 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-22 13:06:26,660 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-22 13:06:26,662 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-22 13:06:26,663 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-22 13:06:26,664 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-22 13:06:26,665 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-22 13:06:26,666 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-22 13:06:26,668 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-22 13:06:26,669 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-22 13:06:26,670 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-22 13:06:26,670 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-22 13:06:26,671 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-22 13:06:26,672 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-22 13:06:26,672 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-22 13:06:26,673 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-22 13:06:26,674 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-22 13:06:26,674 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_efcb7189-904f-4afd-ae59-872f97a71fe7/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-11-22 13:06:26,700 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-22 13:06:26,701 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-22 13:06:26,701 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-22 13:06:26,702 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-22 13:06:26,702 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-22 13:06:26,702 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-22 13:06:26,702 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-22 13:06:26,702 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-22 13:06:26,703 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-22 13:06:26,703 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-22 13:06:26,703 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-22 13:06:26,703 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-22 13:06:26,703 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-22 13:06:26,704 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-22 13:06:26,704 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-22 13:06:26,704 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-22 13:06:26,705 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-22 13:06:26,705 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-22 13:06:26,705 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-22 13:06:26,705 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-22 13:06:26,705 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-22 13:06:26,706 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-22 13:06:26,706 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-22 13:06:26,706 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-22 13:06:26,706 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-22 13:06:26,706 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-22 13:06:26,707 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-22 13:06:26,707 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-22 13:06:26,707 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-22 13:06:26,707 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-22 13:06:26,707 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-22 13:06:26,708 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-22 13:06:26,708 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-22 13:06:26,708 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-22 13:06:26,708 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-22 13:06:26,708 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-22 13:06:26,709 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-22 13:06:26,709 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-22 13:06:26,709 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-22 13:06:26,709 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-22 13:06:26,709 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_efcb7189-904f-4afd-ae59-872f97a71fe7/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_efcb7189-904f-4afd-ae59-872f97a71fe7/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 38561929b5142acce65cab4da64e7c4ae5f17524 [2020-11-22 13:06:26,941 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-22 13:06:26,970 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-22 13:06:26,975 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-22 13:06:26,976 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-22 13:06:26,977 INFO L275 PluginConnector]: CDTParser initialized [2020-11-22 13:06:26,978 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_efcb7189-904f-4afd-ae59-872f97a71fe7/bin/utaipan/../../sv-benchmarks/c/float-newlib/float_req_bl_1232b.c [2020-11-22 13:06:27,070 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_efcb7189-904f-4afd-ae59-872f97a71fe7/bin/utaipan/data/edccc4784/ce21fec331e84753ba76382048c97d97/FLAG5f2454ae6 [2020-11-22 13:06:27,528 INFO L306 CDTParser]: Found 1 translation units. [2020-11-22 13:06:27,530 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_efcb7189-904f-4afd-ae59-872f97a71fe7/sv-benchmarks/c/float-newlib/float_req_bl_1232b.c [2020-11-22 13:06:27,539 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_efcb7189-904f-4afd-ae59-872f97a71fe7/bin/utaipan/data/edccc4784/ce21fec331e84753ba76382048c97d97/FLAG5f2454ae6 [2020-11-22 13:06:27,890 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_efcb7189-904f-4afd-ae59-872f97a71fe7/bin/utaipan/data/edccc4784/ce21fec331e84753ba76382048c97d97 [2020-11-22 13:06:27,893 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-22 13:06:27,896 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-22 13:06:27,900 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-22 13:06:27,901 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-22 13:06:27,906 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-22 13:06:27,906 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:06:27" (1/1) ... [2020-11-22 13:06:27,908 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@56a06733 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:06:27, skipping insertion in model container [2020-11-22 13:06:27,909 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:06:27" (1/1) ... [2020-11-22 13:06:27,917 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-22 13:06:27,936 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-22 13:06:28,166 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 13:06:28,181 INFO L203 MainTranslator]: Completed pre-run [2020-11-22 13:06:28,202 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 13:06:28,217 INFO L208 MainTranslator]: Completed translation [2020-11-22 13:06:28,217 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:06:28 WrapperNode [2020-11-22 13:06:28,217 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-22 13:06:28,218 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-22 13:06:28,219 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-22 13:06:28,219 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-22 13:06:28,227 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:06:28" (1/1) ... [2020-11-22 13:06:28,235 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:06:28" (1/1) ... [2020-11-22 13:06:28,261 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-22 13:06:28,261 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-22 13:06:28,262 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-22 13:06:28,262 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-22 13:06:28,271 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:06:28" (1/1) ... [2020-11-22 13:06:28,271 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:06:28" (1/1) ... [2020-11-22 13:06:28,284 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:06:28" (1/1) ... [2020-11-22 13:06:28,284 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:06:28" (1/1) ... [2020-11-22 13:06:28,292 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:06:28" (1/1) ... [2020-11-22 13:06:28,296 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:06:28" (1/1) ... [2020-11-22 13:06:28,298 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:06:28" (1/1) ... [2020-11-22 13:06:28,301 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-22 13:06:28,303 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-22 13:06:28,303 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-22 13:06:28,303 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-22 13:06:28,304 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:06:28" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_efcb7189-904f-4afd-ae59-872f97a71fe7/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-22 13:06:28,376 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-22 13:06:28,377 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-22 13:06:28,377 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-11-22 13:06:28,377 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-22 13:06:28,377 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-22 13:06:28,378 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-22 13:06:28,378 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-22 13:06:29,202 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-22 13:06:29,202 INFO L298 CfgBuilder]: Removed 20 assume(true) statements. [2020-11-22 13:06:29,204 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:06:29 BoogieIcfgContainer [2020-11-22 13:06:29,205 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-22 13:06:29,206 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-22 13:06:29,206 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-22 13:06:29,210 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-22 13:06:29,210 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 01:06:27" (1/3) ... [2020-11-22 13:06:29,211 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18dc271a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:06:29, skipping insertion in model container [2020-11-22 13:06:29,212 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:06:28" (2/3) ... [2020-11-22 13:06:29,212 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18dc271a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:06:29, skipping insertion in model container [2020-11-22 13:06:29,212 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:06:29" (3/3) ... [2020-11-22 13:06:29,215 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1232b.c [2020-11-22 13:06:29,231 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-22 13:06:29,235 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-22 13:06:29,248 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-22 13:06:29,275 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-22 13:06:29,276 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-22 13:06:29,276 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-22 13:06:29,276 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-22 13:06:29,276 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-22 13:06:29,276 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-22 13:06:29,277 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-22 13:06:29,277 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-22 13:06:29,288 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states. [2020-11-22 13:06:29,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-22 13:06:29,293 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:06:29,294 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:06:29,294 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:06:29,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:06:29,300 INFO L82 PathProgramCache]: Analyzing trace with hash 709760188, now seen corresponding path program 1 times [2020-11-22 13:06:29,309 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:06:29,310 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1402224572] [2020-11-22 13:06:29,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:06:29,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:06:29,432 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:06:29,433 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1402224572] [2020-11-22 13:06:29,434 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:06:29,434 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-22 13:06:29,435 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134357084] [2020-11-22 13:06:29,439 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-22 13:06:29,439 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:06:29,451 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-22 13:06:29,452 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-22 13:06:29,454 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 2 states. [2020-11-22 13:06:29,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:06:29,470 INFO L93 Difference]: Finished difference Result 35 states and 51 transitions. [2020-11-22 13:06:29,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-22 13:06:29,471 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-11-22 13:06:29,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:06:29,479 INFO L225 Difference]: With dead ends: 35 [2020-11-22 13:06:29,479 INFO L226 Difference]: Without dead ends: 16 [2020-11-22 13:06:29,482 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 [2020-11-22 13:06:29,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2020-11-22 13:06:29,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2020-11-22 13:06:29,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-11-22 13:06:29,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 17 transitions. [2020-11-22 13:06:29,513 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 17 transitions. Word has length 8 [2020-11-22 13:06:29,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:06:29,513 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 17 transitions. [2020-11-22 13:06:29,513 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-22 13:06:29,513 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions. [2020-11-22 13:06:29,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-22 13:06:29,514 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:06:29,514 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:06:29,514 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-22 13:06:29,514 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:06:29,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:06:29,515 INFO L82 PathProgramCache]: Analyzing trace with hash -1365755737, now seen corresponding path program 1 times [2020-11-22 13:06:29,516 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:06:29,516 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1048105956] [2020-11-22 13:06:29,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:06:29,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-22 13:06:29,559 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-22 13:06:29,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-22 13:06:29,601 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-22 13:06:29,633 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2020-11-22 13:06:29,633 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-22 13:06:29,634 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-22 13:06:29,658 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 01:06:29 BoogieIcfgContainer [2020-11-22 13:06:29,658 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-22 13:06:29,659 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-22 13:06:29,659 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-22 13:06:29,659 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-22 13:06:29,659 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:06:29" (3/4) ... [2020-11-22 13:06:29,662 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-22 13:06:29,663 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-22 13:06:29,664 INFO L168 Benchmark]: Toolchain (without parser) took 1767.50 ms. Allocated memory is still 90.2 MB. Free memory was 58.0 MB in the beginning and 42.0 MB in the end (delta: 16.0 MB). Peak memory consumption was 14.0 MB. Max. memory is 16.1 GB. [2020-11-22 13:06:29,665 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 71.3 MB. Free memory was 33.3 MB in the beginning and 33.3 MB in the end (delta: 33.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 13:06:29,666 INFO L168 Benchmark]: CACSL2BoogieTranslator took 317.34 ms. Allocated memory is still 90.2 MB. Free memory was 57.8 MB in the beginning and 66.5 MB in the end (delta: -8.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-22 13:06:29,667 INFO L168 Benchmark]: Boogie Procedure Inliner took 42.38 ms. Allocated memory is still 90.2 MB. Free memory was 66.5 MB in the beginning and 64.8 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-22 13:06:29,667 INFO L168 Benchmark]: Boogie Preprocessor took 40.31 ms. Allocated memory is still 90.2 MB. Free memory was 64.8 MB in the beginning and 63.1 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-22 13:06:29,668 INFO L168 Benchmark]: RCFGBuilder took 902.11 ms. Allocated memory is still 90.2 MB. Free memory was 63.1 MB in the beginning and 65.1 MB in the end (delta: -1.9 MB). Peak memory consumption was 35.7 MB. Max. memory is 16.1 GB. [2020-11-22 13:06:29,669 INFO L168 Benchmark]: TraceAbstraction took 451.76 ms. Allocated memory is still 90.2 MB. Free memory was 64.6 MB in the beginning and 42.5 MB in the end (delta: 22.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. [2020-11-22 13:06:29,669 INFO L168 Benchmark]: Witness Printer took 4.01 ms. Allocated memory is still 90.2 MB. Free memory was 42.5 MB in the beginning and 42.0 MB in the end (delta: 493.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 13:06:29,673 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 71.3 MB. Free memory was 33.3 MB in the beginning and 33.3 MB in the end (delta: 33.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 317.34 ms. Allocated memory is still 90.2 MB. Free memory was 57.8 MB in the beginning and 66.5 MB in the end (delta: -8.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 42.38 ms. Allocated memory is still 90.2 MB. Free memory was 66.5 MB in the beginning and 64.8 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 40.31 ms. Allocated memory is still 90.2 MB. Free memory was 64.8 MB in the beginning and 63.1 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 902.11 ms. Allocated memory is still 90.2 MB. Free memory was 63.1 MB in the beginning and 65.1 MB in the end (delta: -1.9 MB). Peak memory consumption was 35.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 451.76 ms. Allocated memory is still 90.2 MB. Free memory was 64.6 MB in the beginning and 42.5 MB in the end (delta: 22.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. * Witness Printer took 4.01 ms. Allocated memory is still 90.2 MB. Free memory was 42.5 MB in the beginning and 42.0 MB in the end (delta: 493.8 kB). 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 71, overapproximation of someUnaryFLOAToperation at line 66. Possible FailurePath: [L66] float x = -0.0f; [L67] float y = 0.0f; [L15] __uint32_t w; [L18] ieee_float_shape_type gf_u; [L19] gf_u.value = (x) [L20] EXPR gf_u.word [L20] (w) = gf_u.word [L23] COND FALSE !(w == 0x00000000 || w == 0x80000000) [L25-L26] COND FALSE !((w >= 0x00800000 && w <= 0x7f7fffff) || (w >= 0x80800000 && w <= 0xff7fffff)) [L28-L29] COND FALSE !((w >= 0x00000001 && w <= 0x007fffff) || (w >= 0x80000001 && w <= 0x807fffff)) [L31] COND FALSE !(w == 0x7f800000 || w == 0xff800000) [L34] return 0; [L38] COND TRUE __fpclassify_float(x) == 0 [L39] return y; [L68] float res = fmin_float(x, y); [L71] EXPR res == -0.0f && __signbit_float(res) == 1 [L71] COND TRUE !(res == -0.0f && __signbit_float(res) == 1) [L3] __assert_fail("0", "float_req_bl_1232b.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 18 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.3s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 19 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=18occurred 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, 17 NumberOfCodeBlocks, 17 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 7 ConstructedInterpolants, 0 QuantifiedInterpolants, 49 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 [2020-11-22 13:06:32,069 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-22 13:06:32,073 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-22 13:06:32,125 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-22 13:06:32,126 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-22 13:06:32,127 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-22 13:06:32,129 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-22 13:06:32,132 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-22 13:06:32,134 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-22 13:06:32,135 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-22 13:06:32,137 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-22 13:06:32,138 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-22 13:06:32,139 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-22 13:06:32,140 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-22 13:06:32,141 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-22 13:06:32,143 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-22 13:06:32,144 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-22 13:06:32,145 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-22 13:06:32,147 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-22 13:06:32,149 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-22 13:06:32,152 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-22 13:06:32,153 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-22 13:06:32,155 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-22 13:06:32,156 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-22 13:06:32,159 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-22 13:06:32,160 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-22 13:06:32,160 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-22 13:06:32,162 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-22 13:06:32,162 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-22 13:06:32,164 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-22 13:06:32,164 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-22 13:06:32,165 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-22 13:06:32,166 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-22 13:06:32,167 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-22 13:06:32,169 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-22 13:06:32,169 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-22 13:06:32,170 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-22 13:06:32,171 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-22 13:06:32,171 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-22 13:06:32,173 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-22 13:06:32,173 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-22 13:06:32,174 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_efcb7189-904f-4afd-ae59-872f97a71fe7/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2020-11-22 13:06:32,199 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-22 13:06:32,200 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-22 13:06:32,201 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-22 13:06:32,201 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-22 13:06:32,201 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-22 13:06:32,202 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-22 13:06:32,202 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-22 13:06:32,202 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-22 13:06:32,202 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-22 13:06:32,203 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-22 13:06:32,204 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-22 13:06:32,204 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-22 13:06:32,204 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-22 13:06:32,204 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-22 13:06:32,205 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-22 13:06:32,205 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-22 13:06:32,205 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-22 13:06:32,205 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-11-22 13:06:32,206 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-11-22 13:06:32,206 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-22 13:06:32,206 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-22 13:06:32,206 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-22 13:06:32,207 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-22 13:06:32,207 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-22 13:06:32,207 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-22 13:06:32,208 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-22 13:06:32,208 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-22 13:06:32,208 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-22 13:06:32,208 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-22 13:06:32,209 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-22 13:06:32,209 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-22 13:06:32,209 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2020-11-22 13:06:32,209 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-11-22 13:06:32,210 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-22 13:06:32,210 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-22 13:06:32,210 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-22 13:06:32,211 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_efcb7189-904f-4afd-ae59-872f97a71fe7/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_efcb7189-904f-4afd-ae59-872f97a71fe7/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 38561929b5142acce65cab4da64e7c4ae5f17524 [2020-11-22 13:06:32,608 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-22 13:06:32,642 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-22 13:06:32,645 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-22 13:06:32,646 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-22 13:06:32,648 INFO L275 PluginConnector]: CDTParser initialized [2020-11-22 13:06:32,649 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_efcb7189-904f-4afd-ae59-872f97a71fe7/bin/utaipan/../../sv-benchmarks/c/float-newlib/float_req_bl_1232b.c [2020-11-22 13:06:32,716 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_efcb7189-904f-4afd-ae59-872f97a71fe7/bin/utaipan/data/a3b4567c2/f6123fdaf9334d98ad368cf17f936a1f/FLAG27d9e6282 [2020-11-22 13:06:33,191 INFO L306 CDTParser]: Found 1 translation units. [2020-11-22 13:06:33,191 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_efcb7189-904f-4afd-ae59-872f97a71fe7/sv-benchmarks/c/float-newlib/float_req_bl_1232b.c [2020-11-22 13:06:33,202 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_efcb7189-904f-4afd-ae59-872f97a71fe7/bin/utaipan/data/a3b4567c2/f6123fdaf9334d98ad368cf17f936a1f/FLAG27d9e6282 [2020-11-22 13:06:33,557 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_efcb7189-904f-4afd-ae59-872f97a71fe7/bin/utaipan/data/a3b4567c2/f6123fdaf9334d98ad368cf17f936a1f [2020-11-22 13:06:33,559 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-22 13:06:33,560 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-22 13:06:33,562 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-22 13:06:33,562 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-22 13:06:33,565 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-22 13:06:33,566 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:06:33" (1/1) ... [2020-11-22 13:06:33,568 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4463b967 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:06:33, skipping insertion in model container [2020-11-22 13:06:33,568 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:06:33" (1/1) ... [2020-11-22 13:06:33,575 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-22 13:06:33,589 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-22 13:06:33,757 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 13:06:33,793 INFO L203 MainTranslator]: Completed pre-run [2020-11-22 13:06:33,830 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 13:06:33,872 INFO L208 MainTranslator]: Completed translation [2020-11-22 13:06:33,872 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:06:33 WrapperNode [2020-11-22 13:06:33,873 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-22 13:06:33,874 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-22 13:06:33,874 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-22 13:06:33,874 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-22 13:06:33,882 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:06:33" (1/1) ... [2020-11-22 13:06:33,893 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:06:33" (1/1) ... [2020-11-22 13:06:33,917 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-22 13:06:33,917 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-22 13:06:33,918 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-22 13:06:33,918 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-22 13:06:33,925 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:06:33" (1/1) ... [2020-11-22 13:06:33,925 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:06:33" (1/1) ... [2020-11-22 13:06:33,929 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:06:33" (1/1) ... [2020-11-22 13:06:33,930 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:06:33" (1/1) ... [2020-11-22 13:06:33,941 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:06:33" (1/1) ... [2020-11-22 13:06:33,946 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:06:33" (1/1) ... [2020-11-22 13:06:33,949 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:06:33" (1/1) ... [2020-11-22 13:06:33,952 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-22 13:06:33,953 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-22 13:06:33,954 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-22 13:06:33,954 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-22 13:06:33,955 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:06:33" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_efcb7189-904f-4afd-ae59-872f97a71fe7/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-22 13:06:34,015 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-11-22 13:06:34,016 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-22 13:06:34,016 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-11-22 13:06:34,016 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-22 13:06:34,016 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-22 13:06:34,016 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2020-11-22 13:06:34,016 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-22 13:06:34,568 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-22 13:06:34,569 INFO L298 CfgBuilder]: Removed 20 assume(true) statements. [2020-11-22 13:06:34,571 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:06:34 BoogieIcfgContainer [2020-11-22 13:06:34,572 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-22 13:06:34,576 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-22 13:06:34,576 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-22 13:06:34,579 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-22 13:06:34,580 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 01:06:33" (1/3) ... [2020-11-22 13:06:34,581 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52e0de12 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:06:34, skipping insertion in model container [2020-11-22 13:06:34,581 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:06:33" (2/3) ... [2020-11-22 13:06:34,582 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52e0de12 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:06:34, skipping insertion in model container [2020-11-22 13:06:34,582 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:06:34" (3/3) ... [2020-11-22 13:06:34,587 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1232b.c [2020-11-22 13:06:34,599 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-22 13:06:34,604 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-22 13:06:34,622 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-22 13:06:34,659 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-22 13:06:34,660 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-22 13:06:34,660 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-22 13:06:34,660 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-22 13:06:34,660 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-22 13:06:34,660 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-22 13:06:34,661 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-22 13:06:34,661 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-22 13:06:34,675 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2020-11-22 13:06:34,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-22 13:06:34,682 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:06:34,682 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:06:34,683 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:06:34,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:06:34,688 INFO L82 PathProgramCache]: Analyzing trace with hash -958075201, now seen corresponding path program 1 times [2020-11-22 13:06:34,701 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-22 13:06:34,702 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1973380491] [2020-11-22 13:06:34,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_efcb7189-904f-4afd-ae59-872f97a71fe7/bin/utaipan/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2020-11-22 13:06:34,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:06:34,830 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 1 conjunts are in the unsatisfiable core [2020-11-22 13:06:34,835 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 13:06:34,857 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:06:34,857 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 13:06:34,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:06:34,864 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1973380491] [2020-11-22 13:06:34,865 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:06:34,865 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-11-22 13:06:34,866 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771067445] [2020-11-22 13:06:34,870 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-22 13:06:34,871 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-22 13:06:34,885 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-22 13:06:34,886 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-22 13:06:34,888 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 2 states. [2020-11-22 13:06:34,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:06:34,920 INFO L93 Difference]: Finished difference Result 63 states and 99 transitions. [2020-11-22 13:06:34,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-22 13:06:34,923 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-11-22 13:06:34,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:06:34,939 INFO L225 Difference]: With dead ends: 63 [2020-11-22 13:06:34,939 INFO L226 Difference]: Without dead ends: 29 [2020-11-22 13:06:34,943 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-22 13:06:34,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-11-22 13:06:34,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-11-22 13:06:34,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-11-22 13:06:34,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 40 transitions. [2020-11-22 13:06:34,983 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 40 transitions. Word has length 10 [2020-11-22 13:06:34,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:06:34,984 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 40 transitions. [2020-11-22 13:06:34,984 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-22 13:06:34,984 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 40 transitions. [2020-11-22 13:06:34,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-22 13:06:34,986 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:06:34,986 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:06:35,198 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-11-22 13:06:35,198 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:06:35,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:06:35,199 INFO L82 PathProgramCache]: Analyzing trace with hash 1001584898, now seen corresponding path program 1 times [2020-11-22 13:06:35,200 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-22 13:06:35,200 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [734497555] [2020-11-22 13:06:35,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_efcb7189-904f-4afd-ae59-872f97a71fe7/bin/utaipan/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2020-11-22 13:06:35,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:06:35,356 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 3 conjunts are in the unsatisfiable core [2020-11-22 13:06:35,358 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 13:06:35,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:06:35,390 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 13:06:35,432 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:06:35,432 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [734497555] [2020-11-22 13:06:35,433 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:06:35,433 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2020-11-22 13:06:35,433 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961370055] [2020-11-22 13:06:35,434 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-22 13:06:35,435 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-22 13:06:35,435 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-22 13:06:35,436 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-22 13:06:35,436 INFO L87 Difference]: Start difference. First operand 29 states and 40 transitions. Second operand 6 states. [2020-11-22 13:06:35,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:06:35,589 INFO L93 Difference]: Finished difference Result 68 states and 85 transitions. [2020-11-22 13:06:35,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-22 13:06:35,591 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2020-11-22 13:06:35,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:06:35,593 INFO L225 Difference]: With dead ends: 68 [2020-11-22 13:06:35,593 INFO L226 Difference]: Without dead ends: 59 [2020-11-22 13:06:35,594 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-11-22 13:06:35,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-11-22 13:06:35,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 31. [2020-11-22 13:06:35,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-11-22 13:06:35,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 42 transitions. [2020-11-22 13:06:35,603 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 42 transitions. Word has length 11 [2020-11-22 13:06:35,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:06:35,603 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 42 transitions. [2020-11-22 13:06:35,603 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-22 13:06:35,604 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 42 transitions. [2020-11-22 13:06:35,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-22 13:06:35,604 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:06:35,605 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:06:35,805 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-11-22 13:06:35,806 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:06:35,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:06:35,806 INFO L82 PathProgramCache]: Analyzing trace with hash 1219247017, now seen corresponding path program 1 times [2020-11-22 13:06:35,807 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-22 13:06:35,807 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [332320862] [2020-11-22 13:06:35,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_efcb7189-904f-4afd-ae59-872f97a71fe7/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 [2020-11-22 13:06:35,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:06:35,887 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 9 conjunts are in the unsatisfiable core [2020-11-22 13:06:35,889 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 13:06:35,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:06:35,955 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 13:06:36,018 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:06:36,018 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [332320862] [2020-11-22 13:06:36,018 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:06:36,019 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2020-11-22 13:06:36,019 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085053717] [2020-11-22 13:06:36,019 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-22 13:06:36,019 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-22 13:06:36,020 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-22 13:06:36,020 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-22 13:06:36,020 INFO L87 Difference]: Start difference. First operand 31 states and 42 transitions. Second operand 4 states. [2020-11-22 13:06:36,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:06:36,113 INFO L93 Difference]: Finished difference Result 52 states and 69 transitions. [2020-11-22 13:06:36,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-22 13:06:36,114 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-11-22 13:06:36,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:06:36,115 INFO L225 Difference]: With dead ends: 52 [2020-11-22 13:06:36,115 INFO L226 Difference]: Without dead ends: 26 [2020-11-22 13:06:36,116 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 22 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-22 13:06:36,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-11-22 13:06:36,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2020-11-22 13:06:36,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-11-22 13:06:36,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 32 transitions. [2020-11-22 13:06:36,121 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 32 transitions. Word has length 14 [2020-11-22 13:06:36,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:06:36,121 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 32 transitions. [2020-11-22 13:06:36,122 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-22 13:06:36,122 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 32 transitions. [2020-11-22 13:06:36,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-22 13:06:36,123 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:06:36,123 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:06:36,336 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-11-22 13:06:36,336 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:06:36,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:06:36,337 INFO L82 PathProgramCache]: Analyzing trace with hash 1012446717, now seen corresponding path program 1 times [2020-11-22 13:06:36,337 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-22 13:06:36,338 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [309311620] [2020-11-22 13:06:36,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_efcb7189-904f-4afd-ae59-872f97a71fe7/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 [2020-11-22 13:06:36,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:06:36,432 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 3 conjunts are in the unsatisfiable core [2020-11-22 13:06:36,434 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 13:06:36,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:06:36,456 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 13:06:36,480 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:06:36,480 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [309311620] [2020-11-22 13:06:36,480 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:06:36,480 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2020-11-22 13:06:36,481 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387752134] [2020-11-22 13:06:36,481 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-22 13:06:36,481 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-22 13:06:36,482 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-22 13:06:36,482 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-22 13:06:36,482 INFO L87 Difference]: Start difference. First operand 26 states and 32 transitions. Second operand 6 states. [2020-11-22 13:06:36,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:06:36,584 INFO L93 Difference]: Finished difference Result 61 states and 71 transitions. [2020-11-22 13:06:36,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-22 13:06:36,586 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2020-11-22 13:06:36,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:06:36,588 INFO L225 Difference]: With dead ends: 61 [2020-11-22 13:06:36,588 INFO L226 Difference]: Without dead ends: 52 [2020-11-22 13:06:36,589 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-11-22 13:06:36,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-11-22 13:06:36,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 28. [2020-11-22 13:06:36,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-11-22 13:06:36,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 34 transitions. [2020-11-22 13:06:36,594 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 34 transitions. Word has length 16 [2020-11-22 13:06:36,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:06:36,595 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 34 transitions. [2020-11-22 13:06:36,595 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-22 13:06:36,595 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 34 transitions. [2020-11-22 13:06:36,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-22 13:06:36,601 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:06:36,601 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:06:36,801 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-11-22 13:06:36,802 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:06:36,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:06:36,802 INFO L82 PathProgramCache]: Analyzing trace with hash -414082333, now seen corresponding path program 1 times [2020-11-22 13:06:36,802 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-22 13:06:36,803 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2018202224] [2020-11-22 13:06:36,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_efcb7189-904f-4afd-ae59-872f97a71fe7/bin/utaipan/mathsat Starting monitored process 6 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with mathsat -unsat_core_generation=3 [2020-11-22 13:06:36,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:06:36,906 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-22 13:06:36,907 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 13:06:36,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:06:36,925 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 13:06:36,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:06:36,949 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2018202224] [2020-11-22 13:06:36,949 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:06:36,949 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2020-11-22 13:06:36,950 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514901946] [2020-11-22 13:06:36,950 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-22 13:06:36,950 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-22 13:06:36,951 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-22 13:06:36,951 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-22 13:06:36,951 INFO L87 Difference]: Start difference. First operand 28 states and 34 transitions. Second operand 4 states. [2020-11-22 13:06:36,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:06:36,963 INFO L93 Difference]: Finished difference Result 38 states and 44 transitions. [2020-11-22 13:06:36,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 13:06:36,964 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2020-11-22 13:06:36,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:06:36,965 INFO L225 Difference]: With dead ends: 38 [2020-11-22 13:06:36,965 INFO L226 Difference]: Without dead ends: 28 [2020-11-22 13:06:36,965 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 30 SyntacticMatches, 2 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-22 13:06:36,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-11-22 13:06:36,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-11-22 13:06:36,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-11-22 13:06:36,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 33 transitions. [2020-11-22 13:06:36,971 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 33 transitions. Word has length 18 [2020-11-22 13:06:36,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:06:36,971 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 33 transitions. [2020-11-22 13:06:36,971 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-22 13:06:36,972 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 33 transitions. [2020-11-22 13:06:36,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-22 13:06:36,972 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:06:36,973 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:06:37,173 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2020-11-22 13:06:37,173 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:06:37,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:06:37,174 INFO L82 PathProgramCache]: Analyzing trace with hash -356824031, now seen corresponding path program 1 times [2020-11-22 13:06:37,174 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-22 13:06:37,175 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1894238787] [2020-11-22 13:06:37,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_efcb7189-904f-4afd-ae59-872f97a71fe7/bin/utaipan/mathsat Starting monitored process 7 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with mathsat -unsat_core_generation=3 [2020-11-22 13:06:37,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:06:37,274 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 8 conjunts are in the unsatisfiable core [2020-11-22 13:06:37,275 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 13:06:37,359 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:06:37,359 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 13:06:37,423 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:06:37,423 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1894238787] [2020-11-22 13:06:37,423 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:06:37,424 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 9 [2020-11-22 13:06:37,424 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019871624] [2020-11-22 13:06:37,424 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-11-22 13:06:37,424 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-22 13:06:37,425 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-11-22 13:06:37,425 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-11-22 13:06:37,425 INFO L87 Difference]: Start difference. First operand 28 states and 33 transitions. Second operand 9 states. [2020-11-22 13:06:37,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:06:37,564 INFO L93 Difference]: Finished difference Result 40 states and 44 transitions. [2020-11-22 13:06:37,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-22 13:06:37,565 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 18 [2020-11-22 13:06:37,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:06:37,565 INFO L225 Difference]: With dead ends: 40 [2020-11-22 13:06:37,566 INFO L226 Difference]: Without dead ends: 37 [2020-11-22 13:06:37,566 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2020-11-22 13:06:37,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-11-22 13:06:37,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 30. [2020-11-22 13:06:37,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-11-22 13:06:37,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 35 transitions. [2020-11-22 13:06:37,572 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 35 transitions. Word has length 18 [2020-11-22 13:06:37,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:06:37,572 INFO L481 AbstractCegarLoop]: Abstraction has 30 states and 35 transitions. [2020-11-22 13:06:37,573 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-11-22 13:06:37,573 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 35 transitions. [2020-11-22 13:06:37,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-11-22 13:06:37,573 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:06:37,574 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:06:37,778 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 mathsat -unsat_core_generation=3 [2020-11-22 13:06:37,778 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:06:37,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:06:37,779 INFO L82 PathProgramCache]: Analyzing trace with hash -208358251, now seen corresponding path program 1 times [2020-11-22 13:06:37,779 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-22 13:06:37,779 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1431509742] [2020-11-22 13:06:37,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_efcb7189-904f-4afd-ae59-872f97a71fe7/bin/utaipan/mathsat Starting monitored process 8 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with mathsat -unsat_core_generation=3 [2020-11-22 13:06:37,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:06:37,875 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 9 conjunts are in the unsatisfiable core [2020-11-22 13:06:37,877 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 13:06:37,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:06:37,905 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 13:06:37,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:06:37,931 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1431509742] [2020-11-22 13:06:37,931 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:06:37,932 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2020-11-22 13:06:37,932 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150212406] [2020-11-22 13:06:37,932 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-22 13:06:37,932 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-22 13:06:37,933 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-22 13:06:37,933 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-22 13:06:37,933 INFO L87 Difference]: Start difference. First operand 30 states and 35 transitions. Second operand 5 states. [2020-11-22 13:06:38,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:06:38,010 INFO L93 Difference]: Finished difference Result 43 states and 47 transitions. [2020-11-22 13:06:38,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-22 13:06:38,011 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 19 [2020-11-22 13:06:38,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:06:38,012 INFO L225 Difference]: With dead ends: 43 [2020-11-22 13:06:38,012 INFO L226 Difference]: Without dead ends: 23 [2020-11-22 13:06:38,013 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 31 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-11-22 13:06:38,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-11-22 13:06:38,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2020-11-22 13:06:38,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-11-22 13:06:38,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 22 transitions. [2020-11-22 13:06:38,017 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 22 transitions. Word has length 19 [2020-11-22 13:06:38,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:06:38,017 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 22 transitions. [2020-11-22 13:06:38,017 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-22 13:06:38,017 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 22 transitions. [2020-11-22 13:06:38,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-11-22 13:06:38,018 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:06:38,018 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:06:38,238 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 mathsat -unsat_core_generation=3 [2020-11-22 13:06:38,239 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:06:38,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:06:38,239 INFO L82 PathProgramCache]: Analyzing trace with hash -1524231306, now seen corresponding path program 1 times [2020-11-22 13:06:38,239 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-22 13:06:38,239 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [383186461] [2020-11-22 13:06:38,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_efcb7189-904f-4afd-ae59-872f97a71fe7/bin/utaipan/mathsat Starting monitored process 9 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with mathsat -unsat_core_generation=3 [2020-11-22 13:06:38,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-22 13:06:38,360 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-22 13:06:38,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-22 13:06:38,497 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-22 13:06:38,578 INFO L173 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2020-11-22 13:06:38,579 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-22 13:06:38,779 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 mathsat -unsat_core_generation=3 [2020-11-22 13:06:38,820 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 01:06:38 BoogieIcfgContainer [2020-11-22 13:06:38,820 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-22 13:06:38,821 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-22 13:06:38,821 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-22 13:06:38,821 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-22 13:06:38,822 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:06:34" (3/4) ... [2020-11-22 13:06:38,824 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-22 13:06:38,873 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_efcb7189-904f-4afd-ae59-872f97a71fe7/bin/utaipan/witness.graphml [2020-11-22 13:06:38,874 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-22 13:06:38,876 INFO L168 Benchmark]: Toolchain (without parser) took 5314.65 ms. Allocated memory was 71.3 MB in the beginning and 86.0 MB in the end (delta: 14.7 MB). Free memory was 37.9 MB in the beginning and 43.4 MB in the end (delta: -5.6 MB). Peak memory consumption was 9.4 MB. Max. memory is 16.1 GB. [2020-11-22 13:06:38,876 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 71.3 MB. Free memory is still 54.5 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 13:06:38,877 INFO L168 Benchmark]: CACSL2BoogieTranslator took 311.20 ms. Allocated memory is still 71.3 MB. Free memory was 37.7 MB in the beginning and 55.0 MB in the end (delta: -17.3 MB). Peak memory consumption was 12.8 MB. Max. memory is 16.1 GB. [2020-11-22 13:06:38,878 INFO L168 Benchmark]: Boogie Procedure Inliner took 42.98 ms. Allocated memory is still 71.3 MB. Free memory was 54.8 MB in the beginning and 53.0 MB in the end (delta: 1.8 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 13:06:38,878 INFO L168 Benchmark]: Boogie Preprocessor took 35.23 ms. Allocated memory is still 71.3 MB. Free memory was 53.0 MB in the beginning and 51.6 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-22 13:06:38,879 INFO L168 Benchmark]: RCFGBuilder took 618.46 ms. Allocated memory is still 71.3 MB. Free memory was 51.4 MB in the beginning and 31.4 MB in the end (delta: 20.0 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. [2020-11-22 13:06:38,880 INFO L168 Benchmark]: TraceAbstraction took 4244.71 ms. Allocated memory was 71.3 MB in the beginning and 86.0 MB in the end (delta: 14.7 MB). Free memory was 31.0 MB in the beginning and 46.2 MB in the end (delta: -15.2 MB). Peak memory consumption was 806.9 kB. Max. memory is 16.1 GB. [2020-11-22 13:06:38,880 INFO L168 Benchmark]: Witness Printer took 52.95 ms. Allocated memory is still 86.0 MB. Free memory was 45.6 MB in the beginning and 43.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-22 13:06:38,884 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 71.3 MB. Free memory is still 54.5 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 311.20 ms. Allocated memory is still 71.3 MB. Free memory was 37.7 MB in the beginning and 55.0 MB in the end (delta: -17.3 MB). Peak memory consumption was 12.8 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 42.98 ms. Allocated memory is still 71.3 MB. Free memory was 54.8 MB in the beginning and 53.0 MB in the end (delta: 1.8 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 35.23 ms. Allocated memory is still 71.3 MB. Free memory was 53.0 MB in the beginning and 51.6 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 618.46 ms. Allocated memory is still 71.3 MB. Free memory was 51.4 MB in the beginning and 31.4 MB in the end (delta: 20.0 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. * TraceAbstraction took 4244.71 ms. Allocated memory was 71.3 MB in the beginning and 86.0 MB in the end (delta: 14.7 MB). Free memory was 31.0 MB in the beginning and 46.2 MB in the end (delta: -15.2 MB). Peak memory consumption was 806.9 kB. Max. memory is 16.1 GB. * Witness Printer took 52.95 ms. Allocated memory is still 86.0 MB. Free memory was 45.6 MB in the beginning and 43.4 MB in the end (delta: 2.1 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: [L66] float x = -0.0f; [L67] float y = 0.0f; [L15] __uint32_t w; [L18] ieee_float_shape_type gf_u; [L19] gf_u.value = (x) [L20] EXPR gf_u.word [L20] (w) = gf_u.word [L23] COND TRUE w == 0x00000000 || w == 0x80000000 [L24] return 2; [L38] COND FALSE !(__fpclassify_float(x) == 0) [L15] __uint32_t w; [L18] ieee_float_shape_type gf_u; [L19] gf_u.value = (x) [L20] EXPR gf_u.word [L20] (w) = gf_u.word [L23] COND TRUE w == 0x00000000 || w == 0x80000000 [L24] return 2; [L40] COND FALSE !(__fpclassify_float(y) == 0) [L43] EXPR x < y ? x : y [L43] return x < y ? x : y; [L68] float res = fmin_float(x, y); [L71] EXPR res == -0.0f && __signbit_float(res) == 1 [L47] __uint32_t w; [L50] ieee_float_shape_type gf_u; [L51] gf_u.value = (x) [L52] EXPR gf_u.word [L52] (w) = gf_u.word [L55] return (w & 0x80000000) != 0; [L71] EXPR res == -0.0f && __signbit_float(res) == 1 [L71] COND TRUE !(res == -0.0f && __signbit_float(res) == 1) [L3] __assert_fail("0", "float_req_bl_1232b.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 33 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 4.1s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 222 SDtfs, 175 SDslu, 301 SDs, 0 SdLazy, 100 SolverSat, 15 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 209 GetRequests, 169 SyntacticMatches, 7 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=33occurred 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, 7 MinimizatonAttempts, 59 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 128 NumberOfCodeBlocks, 128 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 198 ConstructedInterpolants, 0 QuantifiedInterpolants, 7783 SizeOfPredicates, 27 NumberOfNonLiveVariables, 433 ConjunctsInSsa, 40 ConjunctsInUnsatCore, 14 InterpolantComputations, 14 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...