./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_8f070a5c-0b74-4a24-a52b-389ecfa9f812/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_8f070a5c-0b74-4a24-a52b-389ecfa9f812/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_8f070a5c-0b74-4a24-a52b-389ecfa9f812/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_8f070a5c-0b74-4a24-a52b-389ecfa9f812/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1232b.c -s /tmp/vcloud-vcloud-master/worker/run_dir_8f070a5c-0b74-4a24-a52b-389ecfa9f812/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_8f070a5c-0b74-4a24-a52b-389ecfa9f812/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_8f070a5c-0b74-4a24-a52b-389ecfa9f812/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_8f070a5c-0b74-4a24-a52b-389ecfa9f812/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_8f070a5c-0b74-4a24-a52b-389ecfa9f812/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_8f070a5c-0b74-4a24-a52b-389ecfa9f812/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1232b.c -s /tmp/vcloud-vcloud-master/worker/run_dir_8f070a5c-0b74-4a24-a52b-389ecfa9f812/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_8f070a5c-0b74-4a24-a52b-389ecfa9f812/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 [2020-11-28 07:42:14,880 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 07:42:14,888 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 07:42:14,943 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 07:42:14,944 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 07:42:14,950 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 07:42:14,953 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 07:42:14,958 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 07:42:14,961 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 07:42:14,970 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 07:42:14,971 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 07:42:14,974 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 07:42:14,975 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 07:42:14,979 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 07:42:14,980 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 07:42:14,983 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 07:42:14,984 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 07:42:14,989 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 07:42:14,993 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 07:42:14,997 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 07:42:14,999 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 07:42:15,001 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 07:42:15,002 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 07:42:15,003 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 07:42:15,006 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 07:42:15,007 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 07:42:15,007 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 07:42:15,008 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 07:42:15,009 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 07:42:15,010 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 07:42:15,011 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 07:42:15,012 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 07:42:15,013 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 07:42:15,014 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 07:42:15,015 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 07:42:15,015 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 07:42:15,016 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 07:42:15,016 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 07:42:15,016 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 07:42:15,017 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 07:42:15,018 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 07:42:15,019 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_8f070a5c-0b74-4a24-a52b-389ecfa9f812/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-11-28 07:42:15,045 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 07:42:15,045 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 07:42:15,046 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-28 07:42:15,046 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-28 07:42:15,046 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-28 07:42:15,047 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-28 07:42:15,047 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-28 07:42:15,047 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-28 07:42:15,047 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-28 07:42:15,047 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-28 07:42:15,048 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-28 07:42:15,048 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-28 07:42:15,048 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-28 07:42:15,048 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-28 07:42:15,048 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-28 07:42:15,049 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 07:42:15,050 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 07:42:15,050 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 07:42:15,050 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 07:42:15,050 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 07:42:15,050 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 07:42:15,051 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 07:42:15,051 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 07:42:15,051 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-28 07:42:15,051 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 07:42:15,051 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 07:42:15,052 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 07:42:15,052 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 07:42:15,052 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 07:42:15,052 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 07:42:15,053 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 07:42:15,053 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 07:42:15,053 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 07:42:15,053 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 07:42:15,053 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 07:42:15,054 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-28 07:42:15,054 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 07:42:15,054 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 07:42:15,054 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 07:42:15,054 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-28 07:42:15,055 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_8f070a5c-0b74-4a24-a52b-389ecfa9f812/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_8f070a5c-0b74-4a24-a52b-389ecfa9f812/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 38561929b5142acce65cab4da64e7c4ae5f17524 [2020-11-28 07:42:15,305 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 07:42:15,328 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 07:42:15,331 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 07:42:15,332 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 07:42:15,333 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 07:42:15,334 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_8f070a5c-0b74-4a24-a52b-389ecfa9f812/bin/utaipan/../../sv-benchmarks/c/float-newlib/float_req_bl_1232b.c [2020-11-28 07:42:15,409 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_8f070a5c-0b74-4a24-a52b-389ecfa9f812/bin/utaipan/data/bd2b1fe6d/0b21c43c17c145a7bb159a9e02c611a4/FLAG09f92a3ce [2020-11-28 07:42:15,927 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 07:42:15,928 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_8f070a5c-0b74-4a24-a52b-389ecfa9f812/sv-benchmarks/c/float-newlib/float_req_bl_1232b.c [2020-11-28 07:42:15,941 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_8f070a5c-0b74-4a24-a52b-389ecfa9f812/bin/utaipan/data/bd2b1fe6d/0b21c43c17c145a7bb159a9e02c611a4/FLAG09f92a3ce [2020-11-28 07:42:16,289 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_8f070a5c-0b74-4a24-a52b-389ecfa9f812/bin/utaipan/data/bd2b1fe6d/0b21c43c17c145a7bb159a9e02c611a4 [2020-11-28 07:42:16,291 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 07:42:16,292 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 07:42:16,299 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 07:42:16,300 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 07:42:16,304 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 07:42:16,304 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:42:16" (1/1) ... [2020-11-28 07:42:16,306 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a6e530b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:42:16, skipping insertion in model container [2020-11-28 07:42:16,306 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:42:16" (1/1) ... [2020-11-28 07:42:16,315 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 07:42:16,331 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 07:42:16,536 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:42:16,545 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 07:42:16,568 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:42:16,583 INFO L208 MainTranslator]: Completed translation [2020-11-28 07:42:16,584 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:42:16 WrapperNode [2020-11-28 07:42:16,584 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 07:42:16,585 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 07:42:16,585 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 07:42:16,586 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 07:42:16,593 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:42:16" (1/1) ... [2020-11-28 07:42:16,601 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:42:16" (1/1) ... [2020-11-28 07:42:16,626 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 07:42:16,627 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 07:42:16,627 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 07:42:16,627 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 07:42:16,635 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:42:16" (1/1) ... [2020-11-28 07:42:16,635 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:42:16" (1/1) ... [2020-11-28 07:42:16,639 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:42:16" (1/1) ... [2020-11-28 07:42:16,639 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:42:16" (1/1) ... [2020-11-28 07:42:16,647 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:42:16" (1/1) ... [2020-11-28 07:42:16,652 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:42:16" (1/1) ... [2020-11-28 07:42:16,654 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:42:16" (1/1) ... [2020-11-28 07:42:16,657 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 07:42:16,658 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 07:42:16,659 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 07:42:16,659 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 07:42:16,660 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:42:16" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8f070a5c-0b74-4a24-a52b-389ecfa9f812/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 [2020-11-28 07:42:16,729 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-28 07:42:16,729 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 07:42:16,729 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-11-28 07:42:16,730 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 07:42:16,733 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 07:42:16,733 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-28 07:42:16,734 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-28 07:42:17,508 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 07:42:17,508 INFO L298 CfgBuilder]: Removed 20 assume(true) statements. [2020-11-28 07:42:17,510 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:42:17 BoogieIcfgContainer [2020-11-28 07:42:17,511 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 07:42:17,512 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 07:42:17,513 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 07:42:17,520 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 07:42:17,520 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 07:42:16" (1/3) ... [2020-11-28 07:42:17,521 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2906ecda and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:42:17, skipping insertion in model container [2020-11-28 07:42:17,522 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:42:16" (2/3) ... [2020-11-28 07:42:17,523 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2906ecda and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:42:17, skipping insertion in model container [2020-11-28 07:42:17,523 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:42:17" (3/3) ... [2020-11-28 07:42:17,533 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1232b.c [2020-11-28 07:42:17,551 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 07:42:17,556 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-28 07:42:17,569 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-28 07:42:17,608 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 07:42:17,609 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 07:42:17,609 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 07:42:17,609 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 07:42:17,609 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 07:42:17,609 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 07:42:17,610 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 07:42:17,610 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 07:42:17,623 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states. [2020-11-28 07:42:17,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-28 07:42:17,632 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:42:17,633 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:42:17,633 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:42:17,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:42:17,640 INFO L82 PathProgramCache]: Analyzing trace with hash 709760188, now seen corresponding path program 1 times [2020-11-28 07:42:17,649 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:42:17,649 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890148109] [2020-11-28 07:42:17,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:42:17,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:42:17,768 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:42:17,769 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890148109] [2020-11-28 07:42:17,770 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:42:17,770 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 07:42:17,771 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624277906] [2020-11-28 07:42:17,775 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-28 07:42:17,775 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:42:17,789 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-28 07:42:17,790 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-28 07:42:17,792 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 2 states. [2020-11-28 07:42:17,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:42:17,809 INFO L93 Difference]: Finished difference Result 35 states and 51 transitions. [2020-11-28 07:42:17,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-28 07:42:17,810 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-11-28 07:42:17,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:42:17,819 INFO L225 Difference]: With dead ends: 35 [2020-11-28 07:42:17,819 INFO L226 Difference]: Without dead ends: 16 [2020-11-28 07:42:17,822 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 [2020-11-28 07:42:17,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2020-11-28 07:42:17,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2020-11-28 07:42:17,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-11-28 07:42:17,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 17 transitions. [2020-11-28 07:42:17,855 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 17 transitions. Word has length 8 [2020-11-28 07:42:17,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:42:17,856 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 17 transitions. [2020-11-28 07:42:17,856 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-28 07:42:17,856 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions. [2020-11-28 07:42:17,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-28 07:42:17,856 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:42:17,857 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:42:17,857 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-28 07:42:17,857 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:42:17,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:42:17,858 INFO L82 PathProgramCache]: Analyzing trace with hash -1365755737, now seen corresponding path program 1 times [2020-11-28 07:42:17,858 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:42:17,859 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [663560775] [2020-11-28 07:42:17,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:42:17,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 07:42:17,944 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 07:42:18,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 07:42:18,008 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 07:42:18,039 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2020-11-28 07:42:18,039 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-28 07:42:18,040 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-28 07:42:18,074 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 07:42:18 BoogieIcfgContainer [2020-11-28 07:42:18,074 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 07:42:18,075 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 07:42:18,076 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 07:42:18,077 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 07:42:18,077 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:42:17" (3/4) ... [2020-11-28 07:42:18,081 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-28 07:42:18,081 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 07:42:18,085 INFO L168 Benchmark]: Toolchain (without parser) took 1790.21 ms. Allocated memory is still 94.4 MB. Free memory was 63.6 MB in the beginning and 47.6 MB in the end (delta: 16.0 MB). Peak memory consumption was 14.2 MB. Max. memory is 16.1 GB. [2020-11-28 07:42:18,087 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 77.6 MB. Free memory was 47.8 MB in the beginning and 47.8 MB in the end (delta: 27.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:42:18,089 INFO L168 Benchmark]: CACSL2BoogieTranslator took 285.23 ms. Allocated memory is still 94.4 MB. Free memory was 63.2 MB in the beginning and 71.9 MB in the end (delta: -8.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-28 07:42:18,090 INFO L168 Benchmark]: Boogie Procedure Inliner took 41.07 ms. Allocated memory is still 94.4 MB. Free memory was 71.9 MB in the beginning and 70.2 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 07:42:18,091 INFO L168 Benchmark]: Boogie Preprocessor took 30.55 ms. Allocated memory is still 94.4 MB. Free memory was 70.2 MB in the beginning and 68.6 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 07:42:18,092 INFO L168 Benchmark]: RCFGBuilder took 852.49 ms. Allocated memory is still 94.4 MB. Free memory was 68.6 MB in the beginning and 70.2 MB in the end (delta: -1.6 MB). Peak memory consumption was 35.8 MB. Max. memory is 16.1 GB. [2020-11-28 07:42:18,092 INFO L168 Benchmark]: TraceAbstraction took 562.09 ms. Allocated memory is still 94.4 MB. Free memory was 69.7 MB in the beginning and 47.6 MB in the end (delta: 22.1 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. [2020-11-28 07:42:18,093 INFO L168 Benchmark]: Witness Printer took 6.22 ms. Allocated memory is still 94.4 MB. Free memory is still 47.6 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:42:18,102 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 77.6 MB. Free memory was 47.8 MB in the beginning and 47.8 MB in the end (delta: 27.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 285.23 ms. Allocated memory is still 94.4 MB. Free memory was 63.2 MB in the beginning and 71.9 MB in the end (delta: -8.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 41.07 ms. Allocated memory is still 94.4 MB. Free memory was 71.9 MB in the beginning and 70.2 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 30.55 ms. Allocated memory is still 94.4 MB. Free memory was 70.2 MB in the beginning and 68.6 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 852.49 ms. Allocated memory is still 94.4 MB. Free memory was 68.6 MB in the beginning and 70.2 MB in the end (delta: -1.6 MB). Peak memory consumption was 35.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 562.09 ms. Allocated memory is still 94.4 MB. Free memory was 69.7 MB in the beginning and 47.6 MB in the end (delta: 22.1 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. * Witness Printer took 6.22 ms. Allocated memory is still 94.4 MB. Free memory is still 47.6 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 3]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 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: 0.4s, 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 [2020-11-28 07:42:20,611 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 07:42:20,615 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 07:42:20,669 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 07:42:20,670 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 07:42:20,675 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 07:42:20,677 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 07:42:20,682 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 07:42:20,685 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 07:42:20,691 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 07:42:20,693 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 07:42:20,698 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 07:42:20,698 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 07:42:20,704 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 07:42:20,705 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 07:42:20,707 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 07:42:20,708 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 07:42:20,712 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 07:42:20,716 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 07:42:20,723 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 07:42:20,726 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 07:42:20,727 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 07:42:20,736 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 07:42:20,737 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 07:42:20,744 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 07:42:20,747 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 07:42:20,748 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 07:42:20,749 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 07:42:20,751 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 07:42:20,752 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 07:42:20,753 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 07:42:20,754 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 07:42:20,756 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 07:42:20,757 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 07:42:20,758 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 07:42:20,758 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 07:42:20,759 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 07:42:20,760 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 07:42:20,760 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 07:42:20,762 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 07:42:20,763 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 07:42:20,764 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_8f070a5c-0b74-4a24-a52b-389ecfa9f812/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2020-11-28 07:42:20,803 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 07:42:20,804 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 07:42:20,806 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-28 07:42:20,806 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-28 07:42:20,806 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-28 07:42:20,807 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-28 07:42:20,807 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-28 07:42:20,807 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-28 07:42:20,808 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-28 07:42:20,809 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 07:42:20,810 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 07:42:20,811 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 07:42:20,811 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 07:42:20,811 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 07:42:20,812 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 07:42:20,812 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 07:42:20,812 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-28 07:42:20,812 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-11-28 07:42:20,813 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-11-28 07:42:20,813 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 07:42:20,813 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 07:42:20,814 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 07:42:20,814 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 07:42:20,814 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 07:42:20,814 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-28 07:42:20,815 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 07:42:20,815 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 07:42:20,815 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 07:42:20,816 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 07:42:20,816 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 07:42:20,816 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 07:42:20,816 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2020-11-28 07:42:20,817 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-11-28 07:42:20,817 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 07:42:20,817 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 07:42:20,818 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-28 07:42:20,818 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_8f070a5c-0b74-4a24-a52b-389ecfa9f812/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_8f070a5c-0b74-4a24-a52b-389ecfa9f812/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 38561929b5142acce65cab4da64e7c4ae5f17524 [2020-11-28 07:42:21,275 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 07:42:21,301 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 07:42:21,303 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 07:42:21,305 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 07:42:21,305 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 07:42:21,307 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_8f070a5c-0b74-4a24-a52b-389ecfa9f812/bin/utaipan/../../sv-benchmarks/c/float-newlib/float_req_bl_1232b.c [2020-11-28 07:42:21,380 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_8f070a5c-0b74-4a24-a52b-389ecfa9f812/bin/utaipan/data/dec13f6b5/bffa95672f5c43be95798ef8d3e77e3f/FLAG76b78e51d [2020-11-28 07:42:21,875 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 07:42:21,876 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_8f070a5c-0b74-4a24-a52b-389ecfa9f812/sv-benchmarks/c/float-newlib/float_req_bl_1232b.c [2020-11-28 07:42:21,891 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_8f070a5c-0b74-4a24-a52b-389ecfa9f812/bin/utaipan/data/dec13f6b5/bffa95672f5c43be95798ef8d3e77e3f/FLAG76b78e51d [2020-11-28 07:42:22,228 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_8f070a5c-0b74-4a24-a52b-389ecfa9f812/bin/utaipan/data/dec13f6b5/bffa95672f5c43be95798ef8d3e77e3f [2020-11-28 07:42:22,230 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 07:42:22,231 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 07:42:22,234 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 07:42:22,234 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 07:42:22,238 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 07:42:22,239 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:42:22" (1/1) ... [2020-11-28 07:42:22,241 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1884c35b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:42:22, skipping insertion in model container [2020-11-28 07:42:22,241 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:42:22" (1/1) ... [2020-11-28 07:42:22,249 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 07:42:22,264 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 07:42:22,448 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:42:22,475 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 07:42:22,531 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:42:22,583 INFO L208 MainTranslator]: Completed translation [2020-11-28 07:42:22,585 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:42:22 WrapperNode [2020-11-28 07:42:22,585 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 07:42:22,586 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 07:42:22,603 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 07:42:22,603 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 07:42:22,612 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:42:22" (1/1) ... [2020-11-28 07:42:22,651 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:42:22" (1/1) ... [2020-11-28 07:42:22,690 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 07:42:22,692 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 07:42:22,693 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 07:42:22,693 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 07:42:22,701 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:42:22" (1/1) ... [2020-11-28 07:42:22,702 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:42:22" (1/1) ... [2020-11-28 07:42:22,723 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:42:22" (1/1) ... [2020-11-28 07:42:22,723 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:42:22" (1/1) ... [2020-11-28 07:42:22,732 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:42:22" (1/1) ... [2020-11-28 07:42:22,748 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:42:22" (1/1) ... [2020-11-28 07:42:22,756 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:42:22" (1/1) ... [2020-11-28 07:42:22,760 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 07:42:22,766 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 07:42:22,766 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 07:42:22,766 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 07:42:22,767 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:42:22" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8f070a5c-0b74-4a24-a52b-389ecfa9f812/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 [2020-11-28 07:42:22,843 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-11-28 07:42:22,843 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 07:42:22,843 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-11-28 07:42:22,843 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 07:42:22,844 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 07:42:22,844 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2020-11-28 07:42:22,844 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-28 07:42:23,520 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 07:42:23,520 INFO L298 CfgBuilder]: Removed 20 assume(true) statements. [2020-11-28 07:42:23,522 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:42:23 BoogieIcfgContainer [2020-11-28 07:42:23,522 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 07:42:23,524 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 07:42:23,524 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 07:42:23,527 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 07:42:23,528 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 07:42:22" (1/3) ... [2020-11-28 07:42:23,529 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4cfcf190 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:42:23, skipping insertion in model container [2020-11-28 07:42:23,529 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:42:22" (2/3) ... [2020-11-28 07:42:23,529 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4cfcf190 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:42:23, skipping insertion in model container [2020-11-28 07:42:23,530 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:42:23" (3/3) ... [2020-11-28 07:42:23,531 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1232b.c [2020-11-28 07:42:23,542 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 07:42:23,545 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-28 07:42:23,557 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-28 07:42:23,582 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 07:42:23,582 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 07:42:23,583 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 07:42:23,583 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 07:42:23,583 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 07:42:23,583 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 07:42:23,583 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 07:42:23,583 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 07:42:23,596 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2020-11-28 07:42:23,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-28 07:42:23,602 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:42:23,603 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:42:23,603 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:42:23,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:42:23,609 INFO L82 PathProgramCache]: Analyzing trace with hash -958075201, now seen corresponding path program 1 times [2020-11-28 07:42:23,622 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-28 07:42:23,622 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [976553810] [2020-11-28 07:42:23,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8f070a5c-0b74-4a24-a52b-389ecfa9f812/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 [2020-11-28 07:42:23,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:42:23,731 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 1 conjunts are in the unsatisfiable core [2020-11-28 07:42:23,735 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:42:23,751 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:42:23,751 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:42:23,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:42:23,756 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [976553810] [2020-11-28 07:42:23,757 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:42:23,757 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-11-28 07:42:23,758 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917056799] [2020-11-28 07:42:23,762 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-28 07:42:23,763 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-28 07:42:23,776 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-28 07:42:23,777 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-28 07:42:23,779 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 2 states. [2020-11-28 07:42:23,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:42:23,805 INFO L93 Difference]: Finished difference Result 63 states and 99 transitions. [2020-11-28 07:42:23,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-28 07:42:23,806 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-11-28 07:42:23,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:42:23,816 INFO L225 Difference]: With dead ends: 63 [2020-11-28 07:42:23,816 INFO L226 Difference]: Without dead ends: 29 [2020-11-28 07:42:23,819 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 [2020-11-28 07:42:23,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-11-28 07:42:23,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-11-28 07:42:23,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-11-28 07:42:23,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 40 transitions. [2020-11-28 07:42:23,855 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 40 transitions. Word has length 10 [2020-11-28 07:42:23,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:42:23,855 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 40 transitions. [2020-11-28 07:42:23,856 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-28 07:42:23,856 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 40 transitions. [2020-11-28 07:42:23,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-28 07:42:23,857 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:42:23,857 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:42:24,077 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-11-28 07:42:24,079 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:42:24,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:42:24,083 INFO L82 PathProgramCache]: Analyzing trace with hash 1001584898, now seen corresponding path program 1 times [2020-11-28 07:42:24,091 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-28 07:42:24,092 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [123264174] [2020-11-28 07:42:24,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8f070a5c-0b74-4a24-a52b-389ecfa9f812/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 [2020-11-28 07:42:24,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:42:24,228 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 3 conjunts are in the unsatisfiable core [2020-11-28 07:42:24,229 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:42:24,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:42:24,271 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:42:24,335 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:42:24,335 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [123264174] [2020-11-28 07:42:24,335 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:42:24,335 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2020-11-28 07:42:24,336 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449075388] [2020-11-28 07:42:24,337 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-28 07:42:24,337 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-28 07:42:24,343 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-28 07:42:24,344 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-28 07:42:24,344 INFO L87 Difference]: Start difference. First operand 29 states and 40 transitions. Second operand 6 states. [2020-11-28 07:42:24,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:42:24,526 INFO L93 Difference]: Finished difference Result 68 states and 85 transitions. [2020-11-28 07:42:24,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-28 07:42:24,528 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2020-11-28 07:42:24,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:42:24,529 INFO L225 Difference]: With dead ends: 68 [2020-11-28 07:42:24,532 INFO L226 Difference]: Without dead ends: 59 [2020-11-28 07:42:24,533 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-11-28 07:42:24,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-11-28 07:42:24,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 31. [2020-11-28 07:42:24,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-11-28 07:42:24,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 42 transitions. [2020-11-28 07:42:24,541 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 42 transitions. Word has length 11 [2020-11-28 07:42:24,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:42:24,541 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 42 transitions. [2020-11-28 07:42:24,542 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-28 07:42:24,542 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 42 transitions. [2020-11-28 07:42:24,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-28 07:42:24,543 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:42:24,543 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:42:24,760 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-11-28 07:42:24,761 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:42:24,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:42:24,762 INFO L82 PathProgramCache]: Analyzing trace with hash 1219247017, now seen corresponding path program 1 times [2020-11-28 07:42:24,762 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-28 07:42:24,763 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1393329588] [2020-11-28 07:42:24,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8f070a5c-0b74-4a24-a52b-389ecfa9f812/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 [2020-11-28 07:42:24,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:42:24,862 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 9 conjunts are in the unsatisfiable core [2020-11-28 07:42:24,864 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:42:24,909 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:42:24,909 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:42:24,977 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:42:24,977 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1393329588] [2020-11-28 07:42:24,977 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:42:24,978 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2020-11-28 07:42:24,978 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291375057] [2020-11-28 07:42:24,978 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 07:42:24,978 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-28 07:42:24,979 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 07:42:24,979 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 07:42:24,979 INFO L87 Difference]: Start difference. First operand 31 states and 42 transitions. Second operand 4 states. [2020-11-28 07:42:25,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:42:25,064 INFO L93 Difference]: Finished difference Result 52 states and 69 transitions. [2020-11-28 07:42:25,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 07:42:25,065 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-11-28 07:42:25,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:42:25,066 INFO L225 Difference]: With dead ends: 52 [2020-11-28 07:42:25,066 INFO L226 Difference]: Without dead ends: 26 [2020-11-28 07:42:25,067 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 22 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-28 07:42:25,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-11-28 07:42:25,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2020-11-28 07:42:25,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-11-28 07:42:25,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 32 transitions. [2020-11-28 07:42:25,080 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 32 transitions. Word has length 14 [2020-11-28 07:42:25,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:42:25,081 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 32 transitions. [2020-11-28 07:42:25,081 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 07:42:25,081 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 32 transitions. [2020-11-28 07:42:25,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-28 07:42:25,082 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:42:25,082 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:42:25,295 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-11-28 07:42:25,296 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:42:25,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:42:25,297 INFO L82 PathProgramCache]: Analyzing trace with hash 1012446717, now seen corresponding path program 1 times [2020-11-28 07:42:25,297 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-28 07:42:25,297 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2146287456] [2020-11-28 07:42:25,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8f070a5c-0b74-4a24-a52b-389ecfa9f812/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 [2020-11-28 07:42:25,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:42:25,408 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 3 conjunts are in the unsatisfiable core [2020-11-28 07:42:25,410 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:42:25,434 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:42:25,434 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:42:25,478 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:42:25,478 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2146287456] [2020-11-28 07:42:25,478 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:42:25,478 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2020-11-28 07:42:25,479 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298862253] [2020-11-28 07:42:25,479 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-28 07:42:25,479 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-28 07:42:25,480 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-28 07:42:25,480 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-28 07:42:25,480 INFO L87 Difference]: Start difference. First operand 26 states and 32 transitions. Second operand 6 states. [2020-11-28 07:42:25,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:42:25,595 INFO L93 Difference]: Finished difference Result 61 states and 71 transitions. [2020-11-28 07:42:25,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-28 07:42:25,596 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2020-11-28 07:42:25,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:42:25,597 INFO L225 Difference]: With dead ends: 61 [2020-11-28 07:42:25,597 INFO L226 Difference]: Without dead ends: 52 [2020-11-28 07:42:25,598 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 [2020-11-28 07:42:25,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-11-28 07:42:25,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 28. [2020-11-28 07:42:25,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-11-28 07:42:25,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 34 transitions. [2020-11-28 07:42:25,604 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 34 transitions. Word has length 16 [2020-11-28 07:42:25,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:42:25,605 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 34 transitions. [2020-11-28 07:42:25,605 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-28 07:42:25,605 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 34 transitions. [2020-11-28 07:42:25,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-28 07:42:25,606 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:42:25,606 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:42:25,809 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-11-28 07:42:25,809 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:42:25,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:42:25,811 INFO L82 PathProgramCache]: Analyzing trace with hash -414082333, now seen corresponding path program 1 times [2020-11-28 07:42:25,812 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-28 07:42:25,812 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2029123187] [2020-11-28 07:42:25,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8f070a5c-0b74-4a24-a52b-389ecfa9f812/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 [2020-11-28 07:42:25,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:42:25,943 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-28 07:42:25,945 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:42:25,977 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:42:25,977 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:42:26,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:42:26,005 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2029123187] [2020-11-28 07:42:26,005 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:42:26,005 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2020-11-28 07:42:26,005 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914250623] [2020-11-28 07:42:26,006 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 07:42:26,006 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-28 07:42:26,006 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 07:42:26,007 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-28 07:42:26,007 INFO L87 Difference]: Start difference. First operand 28 states and 34 transitions. Second operand 4 states. [2020-11-28 07:42:26,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:42:26,023 INFO L93 Difference]: Finished difference Result 38 states and 44 transitions. [2020-11-28 07:42:26,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:42:26,024 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2020-11-28 07:42:26,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:42:26,025 INFO L225 Difference]: With dead ends: 38 [2020-11-28 07:42:26,025 INFO L226 Difference]: Without dead ends: 28 [2020-11-28 07:42:26,025 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 [2020-11-28 07:42:26,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-11-28 07:42:26,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-11-28 07:42:26,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-11-28 07:42:26,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 33 transitions. [2020-11-28 07:42:26,030 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 33 transitions. Word has length 18 [2020-11-28 07:42:26,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:42:26,031 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 33 transitions. [2020-11-28 07:42:26,031 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 07:42:26,031 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 33 transitions. [2020-11-28 07:42:26,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-28 07:42:26,032 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:42:26,032 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:42:26,232 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2020-11-28 07:42:26,232 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:42:26,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:42:26,233 INFO L82 PathProgramCache]: Analyzing trace with hash -356824031, now seen corresponding path program 1 times [2020-11-28 07:42:26,233 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-28 07:42:26,233 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2053374214] [2020-11-28 07:42:26,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8f070a5c-0b74-4a24-a52b-389ecfa9f812/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 [2020-11-28 07:42:26,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:42:26,338 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 8 conjunts are in the unsatisfiable core [2020-11-28 07:42:26,339 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:42:26,409 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:42:26,409 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:42:26,485 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:42:26,486 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2053374214] [2020-11-28 07:42:26,486 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:42:26,486 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 9 [2020-11-28 07:42:26,486 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405409024] [2020-11-28 07:42:26,486 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-11-28 07:42:26,487 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-28 07:42:26,487 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-11-28 07:42:26,487 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-11-28 07:42:26,487 INFO L87 Difference]: Start difference. First operand 28 states and 33 transitions. Second operand 9 states. [2020-11-28 07:42:26,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:42:26,625 INFO L93 Difference]: Finished difference Result 40 states and 44 transitions. [2020-11-28 07:42:26,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-28 07:42:26,626 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 18 [2020-11-28 07:42:26,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:42:26,627 INFO L225 Difference]: With dead ends: 40 [2020-11-28 07:42:26,627 INFO L226 Difference]: Without dead ends: 37 [2020-11-28 07:42:26,628 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 [2020-11-28 07:42:26,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-11-28 07:42:26,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 30. [2020-11-28 07:42:26,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-11-28 07:42:26,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 35 transitions. [2020-11-28 07:42:26,633 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 35 transitions. Word has length 18 [2020-11-28 07:42:26,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:42:26,633 INFO L481 AbstractCegarLoop]: Abstraction has 30 states and 35 transitions. [2020-11-28 07:42:26,633 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-11-28 07:42:26,633 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 35 transitions. [2020-11-28 07:42:26,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-11-28 07:42:26,634 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:42:26,634 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:42:26,848 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 mathsat -unsat_core_generation=3 [2020-11-28 07:42:26,849 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:42:26,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:42:26,849 INFO L82 PathProgramCache]: Analyzing trace with hash -208358251, now seen corresponding path program 1 times [2020-11-28 07:42:26,850 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-28 07:42:26,850 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1500976015] [2020-11-28 07:42:26,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8f070a5c-0b74-4a24-a52b-389ecfa9f812/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 [2020-11-28 07:42:26,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:42:26,940 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 9 conjunts are in the unsatisfiable core [2020-11-28 07:42:26,942 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:42:26,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:42:26,974 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:42:27,003 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:42:27,003 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1500976015] [2020-11-28 07:42:27,003 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:42:27,003 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2020-11-28 07:42:27,004 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809394521] [2020-11-28 07:42:27,004 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 07:42:27,004 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-28 07:42:27,004 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 07:42:27,005 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-28 07:42:27,005 INFO L87 Difference]: Start difference. First operand 30 states and 35 transitions. Second operand 5 states. [2020-11-28 07:42:27,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:42:27,061 INFO L93 Difference]: Finished difference Result 43 states and 47 transitions. [2020-11-28 07:42:27,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 07:42:27,066 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 19 [2020-11-28 07:42:27,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:42:27,066 INFO L225 Difference]: With dead ends: 43 [2020-11-28 07:42:27,067 INFO L226 Difference]: Without dead ends: 23 [2020-11-28 07:42:27,068 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 [2020-11-28 07:42:27,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-11-28 07:42:27,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2020-11-28 07:42:27,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-11-28 07:42:27,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 22 transitions. [2020-11-28 07:42:27,071 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 22 transitions. Word has length 19 [2020-11-28 07:42:27,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:42:27,072 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 22 transitions. [2020-11-28 07:42:27,072 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 07:42:27,072 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 22 transitions. [2020-11-28 07:42:27,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-11-28 07:42:27,072 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:42:27,072 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] [2020-11-28 07:42:27,273 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 mathsat -unsat_core_generation=3 [2020-11-28 07:42:27,273 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:42:27,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:42:27,273 INFO L82 PathProgramCache]: Analyzing trace with hash -1524231306, now seen corresponding path program 1 times [2020-11-28 07:42:27,274 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-28 07:42:27,274 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1162194378] [2020-11-28 07:42:27,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8f070a5c-0b74-4a24-a52b-389ecfa9f812/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 [2020-11-28 07:42:27,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 07:42:27,413 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 07:42:27,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 07:42:27,523 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 07:42:27,611 INFO L173 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2020-11-28 07:42:27,611 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-28 07:42:27,812 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 mathsat -unsat_core_generation=3 [2020-11-28 07:42:27,861 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 07:42:27 BoogieIcfgContainer [2020-11-28 07:42:27,862 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 07:42:27,862 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 07:42:27,862 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 07:42:27,863 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 07:42:27,863 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:42:23" (3/4) ... [2020-11-28 07:42:27,865 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-28 07:42:27,946 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_8f070a5c-0b74-4a24-a52b-389ecfa9f812/bin/utaipan/witness.graphml [2020-11-28 07:42:27,953 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 07:42:27,955 INFO L168 Benchmark]: Toolchain (without parser) took 5723.45 ms. Allocated memory was 52.4 MB in the beginning and 75.5 MB in the end (delta: 23.1 MB). Free memory was 30.4 MB in the beginning and 45.5 MB in the end (delta: -15.1 MB). Peak memory consumption was 8.1 MB. Max. memory is 16.1 GB. [2020-11-28 07:42:27,957 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 52.4 MB. Free memory was 35.5 MB in the beginning and 35.4 MB in the end (delta: 63.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:42:27,957 INFO L168 Benchmark]: CACSL2BoogieTranslator took 351.30 ms. Allocated memory was 52.4 MB in the beginning and 62.9 MB in the end (delta: 10.5 MB). Free memory was 30.2 MB in the beginning and 47.1 MB in the end (delta: -16.9 MB). Peak memory consumption was 7.9 MB. Max. memory is 16.1 GB. [2020-11-28 07:42:27,959 INFO L168 Benchmark]: Boogie Procedure Inliner took 104.49 ms. Allocated memory is still 62.9 MB. Free memory was 47.1 MB in the beginning and 45.2 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 07:42:27,959 INFO L168 Benchmark]: Boogie Preprocessor took 72.57 ms. Allocated memory is still 62.9 MB. Free memory was 45.2 MB in the beginning and 43.7 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:42:27,960 INFO L168 Benchmark]: RCFGBuilder took 756.52 ms. Allocated memory is still 62.9 MB. Free memory was 43.7 MB in the beginning and 43.5 MB in the end (delta: 170.4 kB). Peak memory consumption was 22.1 MB. Max. memory is 16.1 GB. [2020-11-28 07:42:27,960 INFO L168 Benchmark]: TraceAbstraction took 4338.02 ms. Allocated memory was 62.9 MB in the beginning and 75.5 MB in the end (delta: 12.6 MB). Free memory was 43.2 MB in the beginning and 48.2 MB in the end (delta: -5.0 MB). Peak memory consumption was 7.5 MB. Max. memory is 16.1 GB. [2020-11-28 07:42:27,961 INFO L168 Benchmark]: Witness Printer took 91.20 ms. Allocated memory is still 75.5 MB. Free memory was 48.2 MB in the beginning and 45.5 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 07:42:27,964 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 52.4 MB. Free memory was 35.5 MB in the beginning and 35.4 MB in the end (delta: 63.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 351.30 ms. Allocated memory was 52.4 MB in the beginning and 62.9 MB in the end (delta: 10.5 MB). Free memory was 30.2 MB in the beginning and 47.1 MB in the end (delta: -16.9 MB). Peak memory consumption was 7.9 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 104.49 ms. Allocated memory is still 62.9 MB. Free memory was 47.1 MB in the beginning and 45.2 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 72.57 ms. Allocated memory is still 62.9 MB. Free memory was 45.2 MB in the beginning and 43.7 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 756.52 ms. Allocated memory is still 62.9 MB. Free memory was 43.7 MB in the beginning and 43.5 MB in the end (delta: 170.4 kB). Peak memory consumption was 22.1 MB. Max. memory is 16.1 GB. * TraceAbstraction took 4338.02 ms. Allocated memory was 62.9 MB in the beginning and 75.5 MB in the end (delta: 12.6 MB). Free memory was 43.2 MB in the beginning and 48.2 MB in the end (delta: -5.0 MB). Peak memory consumption was 7.5 MB. Max. memory is 16.1 GB. * Witness Printer took 91.20 ms. Allocated memory is still 75.5 MB. Free memory was 48.2 MB in the beginning and 45.5 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 3]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [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: 4.2s, 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: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 0.6s 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...