./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/float_req_bl_1252b.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_5d8c23ea-78ed-46f7-9939-a5db99f29ef3/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_5d8c23ea-78ed-46f7-9939-a5db99f29ef3/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_5d8c23ea-78ed-46f7-9939-a5db99f29ef3/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_5d8c23ea-78ed-46f7-9939-a5db99f29ef3/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1252b.c -s /tmp/vcloud-vcloud-master/worker/run_dir_5d8c23ea-78ed-46f7-9939-a5db99f29ef3/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_5d8c23ea-78ed-46f7-9939-a5db99f29ef3/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 5fb4ea5d2ba4e3ce5c37a1ed90f4b993cc1661a1 ...................................................................................................................................................................................................................................................................................................... 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_5d8c23ea-78ed-46f7-9939-a5db99f29ef3/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_5d8c23ea-78ed-46f7-9939-a5db99f29ef3/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_5d8c23ea-78ed-46f7-9939-a5db99f29ef3/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_5d8c23ea-78ed-46f7-9939-a5db99f29ef3/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1252b.c -s /tmp/vcloud-vcloud-master/worker/run_dir_5d8c23ea-78ed-46f7-9939-a5db99f29ef3/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_5d8c23ea-78ed-46f7-9939-a5db99f29ef3/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 5fb4ea5d2ba4e3ce5c37a1ed90f4b993cc1661a1 ..................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 07:44:02,129 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 07:44:02,132 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 07:44:02,207 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 07:44:02,208 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 07:44:02,214 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 07:44:02,218 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 07:44:02,225 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 07:44:02,230 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 07:44:02,234 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 07:44:02,235 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 07:44:02,238 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 07:44:02,239 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 07:44:02,246 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 07:44:02,248 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 07:44:02,249 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 07:44:02,252 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 07:44:02,253 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 07:44:02,256 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 07:44:02,263 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 07:44:02,269 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 07:44:02,270 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 07:44:02,271 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 07:44:02,274 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 07:44:02,277 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 07:44:02,280 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 07:44:02,280 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 07:44:02,282 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 07:44:02,283 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 07:44:02,284 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 07:44:02,285 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 07:44:02,286 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 07:44:02,288 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 07:44:02,289 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 07:44:02,290 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 07:44:02,290 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 07:44:02,291 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 07:44:02,291 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 07:44:02,291 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 07:44:02,292 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 07:44:02,293 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 07:44:02,293 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_5d8c23ea-78ed-46f7-9939-a5db99f29ef3/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-11-28 07:44:02,318 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 07:44:02,319 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 07:44:02,319 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-28 07:44:02,320 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-28 07:44:02,320 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-28 07:44:02,320 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-28 07:44:02,320 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-28 07:44:02,320 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-28 07:44:02,321 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-28 07:44:02,321 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-28 07:44:02,321 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-28 07:44:02,321 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-28 07:44:02,322 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-28 07:44:02,322 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-28 07:44:02,322 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-28 07:44:02,323 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 07:44:02,323 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 07:44:02,323 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 07:44:02,323 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 07:44:02,323 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 07:44:02,324 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 07:44:02,324 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 07:44:02,324 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 07:44:02,324 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-28 07:44:02,324 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 07:44:02,325 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 07:44:02,325 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 07:44:02,325 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 07:44:02,325 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 07:44:02,325 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 07:44:02,326 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 07:44:02,326 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 07:44:02,326 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 07:44:02,326 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 07:44:02,326 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 07:44:02,327 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-28 07:44:02,327 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 07:44:02,327 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 07:44:02,327 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 07:44:02,327 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-28 07:44:02,328 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_5d8c23ea-78ed-46f7-9939-a5db99f29ef3/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_5d8c23ea-78ed-46f7-9939-a5db99f29ef3/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5fb4ea5d2ba4e3ce5c37a1ed90f4b993cc1661a1 [2020-11-28 07:44:02,598 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 07:44:02,637 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 07:44:02,643 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 07:44:02,644 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 07:44:02,645 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 07:44:02,646 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_5d8c23ea-78ed-46f7-9939-a5db99f29ef3/bin/utaipan/../../sv-benchmarks/c/float-newlib/float_req_bl_1252b.c [2020-11-28 07:44:02,738 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_5d8c23ea-78ed-46f7-9939-a5db99f29ef3/bin/utaipan/data/f9a7abcf8/2112b135bd20474c96fac1b77cb5ecb5/FLAG8e51dd890 [2020-11-28 07:44:03,206 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 07:44:03,207 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_5d8c23ea-78ed-46f7-9939-a5db99f29ef3/sv-benchmarks/c/float-newlib/float_req_bl_1252b.c [2020-11-28 07:44:03,221 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_5d8c23ea-78ed-46f7-9939-a5db99f29ef3/bin/utaipan/data/f9a7abcf8/2112b135bd20474c96fac1b77cb5ecb5/FLAG8e51dd890 [2020-11-28 07:44:03,562 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_5d8c23ea-78ed-46f7-9939-a5db99f29ef3/bin/utaipan/data/f9a7abcf8/2112b135bd20474c96fac1b77cb5ecb5 [2020-11-28 07:44:03,565 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 07:44:03,567 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 07:44:03,568 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 07:44:03,569 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 07:44:03,572 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 07:44:03,573 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:44:03" (1/1) ... [2020-11-28 07:44:03,575 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e77ca6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:44:03, skipping insertion in model container [2020-11-28 07:44:03,575 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:44:03" (1/1) ... [2020-11-28 07:44:03,582 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 07:44:03,598 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 07:44:03,788 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:44:03,805 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 07:44:03,856 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:44:03,873 INFO L208 MainTranslator]: Completed translation [2020-11-28 07:44:03,873 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:44:03 WrapperNode [2020-11-28 07:44:03,873 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 07:44:03,874 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 07:44:03,874 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 07:44:03,875 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 07:44:03,884 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:44:03" (1/1) ... [2020-11-28 07:44:03,892 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:44:03" (1/1) ... [2020-11-28 07:44:03,934 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 07:44:03,935 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 07:44:03,935 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 07:44:03,935 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 07:44:03,943 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:44:03" (1/1) ... [2020-11-28 07:44:03,944 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:44:03" (1/1) ... [2020-11-28 07:44:03,947 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:44:03" (1/1) ... [2020-11-28 07:44:03,947 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:44:03" (1/1) ... [2020-11-28 07:44:03,962 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:44:03" (1/1) ... [2020-11-28 07:44:03,973 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:44:03" (1/1) ... [2020-11-28 07:44:03,975 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:44:03" (1/1) ... [2020-11-28 07:44:03,986 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 07:44:03,987 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 07:44:03,987 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 07:44:03,987 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 07:44:03,994 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:44:03" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5d8c23ea-78ed-46f7-9939-a5db99f29ef3/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 07:44:04,072 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-28 07:44:04,072 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 07:44:04,072 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-11-28 07:44:04,073 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 07:44:04,073 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 07:44:04,073 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-28 07:44:04,073 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-28 07:44:04,904 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 07:44:04,905 INFO L298 CfgBuilder]: Removed 20 assume(true) statements. [2020-11-28 07:44:04,907 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:44:04 BoogieIcfgContainer [2020-11-28 07:44:04,907 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 07:44:04,908 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 07:44:04,908 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 07:44:04,912 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 07:44:04,912 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 07:44:03" (1/3) ... [2020-11-28 07:44:04,913 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@715dad2f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:44:04, skipping insertion in model container [2020-11-28 07:44:04,913 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:44:03" (2/3) ... [2020-11-28 07:44:04,913 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@715dad2f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:44:04, skipping insertion in model container [2020-11-28 07:44:04,913 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:44:04" (3/3) ... [2020-11-28 07:44:04,915 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1252b.c [2020-11-28 07:44:04,926 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 07:44:04,930 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-28 07:44:04,942 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-28 07:44:04,965 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 07:44:04,965 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 07:44:04,965 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 07:44:04,966 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 07:44:04,966 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 07:44:04,966 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 07:44:04,966 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 07:44:04,966 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 07:44:04,978 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states. [2020-11-28 07:44:04,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-28 07:44:04,983 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:44:04,983 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:44:04,984 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:44:04,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:44:04,989 INFO L82 PathProgramCache]: Analyzing trace with hash 709760188, now seen corresponding path program 1 times [2020-11-28 07:44:04,999 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:44:04,999 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708773001] [2020-11-28 07:44:04,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:44:05,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:44:05,125 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 07:44:05,126 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1708773001] [2020-11-28 07:44:05,127 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:44:05,127 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 07:44:05,128 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989137630] [2020-11-28 07:44:05,132 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-28 07:44:05,132 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:44:05,146 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-28 07:44:05,147 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-28 07:44:05,149 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 2 states. [2020-11-28 07:44:05,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:44:05,164 INFO L93 Difference]: Finished difference Result 35 states and 51 transitions. [2020-11-28 07:44:05,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-28 07:44:05,166 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-11-28 07:44:05,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:44:05,174 INFO L225 Difference]: With dead ends: 35 [2020-11-28 07:44:05,174 INFO L226 Difference]: Without dead ends: 16 [2020-11-28 07:44:05,178 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 07:44:05,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2020-11-28 07:44:05,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2020-11-28 07:44:05,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-11-28 07:44:05,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 17 transitions. [2020-11-28 07:44:05,211 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 17 transitions. Word has length 8 [2020-11-28 07:44:05,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:44:05,212 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 17 transitions. [2020-11-28 07:44:05,212 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-28 07:44:05,212 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions. [2020-11-28 07:44:05,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-28 07:44:05,212 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:44:05,213 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:44:05,213 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-28 07:44:05,213 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:44:05,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:44:05,214 INFO L82 PathProgramCache]: Analyzing trace with hash -1365755737, now seen corresponding path program 1 times [2020-11-28 07:44:05,214 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:44:05,215 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [843348275] [2020-11-28 07:44:05,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:44:05,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 07:44:05,297 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 07:44:05,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 07:44:05,361 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 07:44:05,382 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2020-11-28 07:44:05,383 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-28 07:44:05,384 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-28 07:44:05,408 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 07:44:05 BoogieIcfgContainer [2020-11-28 07:44:05,408 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 07:44:05,409 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 07:44:05,409 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 07:44:05,409 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 07:44:05,410 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:44:04" (3/4) ... [2020-11-28 07:44:05,413 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-28 07:44:05,413 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 07:44:05,415 INFO L168 Benchmark]: Toolchain (without parser) took 1847.41 ms. Allocated memory is still 88.1 MB. Free memory was 56.9 MB in the beginning and 62.3 MB in the end (delta: -5.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:44:05,416 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 73.4 MB. Free memory was 44.4 MB in the beginning and 44.4 MB in the end (delta: 26.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:44:05,416 INFO L168 Benchmark]: CACSL2BoogieTranslator took 305.22 ms. Allocated memory is still 88.1 MB. Free memory was 56.7 MB in the beginning and 64.9 MB in the end (delta: -8.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-28 07:44:05,417 INFO L168 Benchmark]: Boogie Procedure Inliner took 59.70 ms. Allocated memory is still 88.1 MB. Free memory was 64.9 MB in the beginning and 62.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 07:44:05,418 INFO L168 Benchmark]: Boogie Preprocessor took 51.35 ms. Allocated memory is still 88.1 MB. Free memory was 62.9 MB in the beginning and 61.6 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 07:44:05,418 INFO L168 Benchmark]: RCFGBuilder took 920.26 ms. Allocated memory is still 88.1 MB. Free memory was 61.6 MB in the beginning and 55.4 MB in the end (delta: 6.2 MB). Peak memory consumption was 27.3 MB. Max. memory is 16.1 GB. [2020-11-28 07:44:05,419 INFO L168 Benchmark]: TraceAbstraction took 500.14 ms. Allocated memory is still 88.1 MB. Free memory was 54.9 MB in the beginning and 62.8 MB in the end (delta: -7.9 MB). Peak memory consumption was 24.5 MB. Max. memory is 16.1 GB. [2020-11-28 07:44:05,420 INFO L168 Benchmark]: Witness Printer took 4.23 ms. Allocated memory is still 88.1 MB. Free memory was 62.8 MB in the beginning and 62.3 MB in the end (delta: 528.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:44:05,423 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 73.4 MB. Free memory was 44.4 MB in the beginning and 44.4 MB in the end (delta: 26.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 305.22 ms. Allocated memory is still 88.1 MB. Free memory was 56.7 MB in the beginning and 64.9 MB in the end (delta: -8.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 59.70 ms. Allocated memory is still 88.1 MB. Free memory was 64.9 MB in the beginning and 62.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 51.35 ms. Allocated memory is still 88.1 MB. Free memory was 62.9 MB in the beginning and 61.6 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 920.26 ms. Allocated memory is still 88.1 MB. Free memory was 61.6 MB in the beginning and 55.4 MB in the end (delta: 6.2 MB). Peak memory consumption was 27.3 MB. Max. memory is 16.1 GB. * TraceAbstraction took 500.14 ms. Allocated memory is still 88.1 MB. Free memory was 54.9 MB in the beginning and 62.8 MB in the end (delta: -7.9 MB). Peak memory consumption was 24.5 MB. Max. memory is 16.1 GB. * Witness Printer took 4.23 ms. Allocated memory is still 88.1 MB. Free memory was 62.8 MB in the beginning and 62.3 MB in the end (delta: 528.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 3]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 80, overapproximation of someUnaryFLOAToperation at line 76. Possible FailurePath: [L75] float x = 0.0f; [L76] float y = -0.0f; [L23] __uint32_t w; [L26] ieee_float_shape_type gf_u; [L27] gf_u.value = (x) [L28] EXPR gf_u.word [L28] (w) = gf_u.word [L31] COND FALSE !(w == 0x00000000 || w == 0x80000000) [L33-L34] COND FALSE !((w >= 0x00800000 && w <= 0x7f7fffff) || (w >= 0x80800000 && w <= 0xff7fffff)) [L36-L37] COND FALSE !((w >= 0x00000001 && w <= 0x007fffff) || (w >= 0x80000001 && w <= 0x807fffff)) [L39] COND FALSE !(w == 0x7f800000 || w == 0xff800000) [L42] return 0; [L46] COND TRUE __fpclassify_float(x) == 0 [L47] return y; [L77] float res = fmax_float(x, y); [L80] EXPR res == 0.0f && __signbit_float(res) == 0 [L80] COND TRUE !(res == 0.0f && __signbit_float(res) == 0) [L3] __assert_fail("0", "float_req_bl_1252b.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 07:44:07,830 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 07:44:07,834 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 07:44:07,893 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 07:44:07,894 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 07:44:07,898 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 07:44:07,902 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 07:44:07,906 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 07:44:07,910 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 07:44:07,916 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 07:44:07,918 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 07:44:07,923 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 07:44:07,923 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 07:44:07,929 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 07:44:07,931 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 07:44:07,933 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 07:44:07,934 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 07:44:07,937 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 07:44:07,941 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 07:44:07,952 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 07:44:07,954 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 07:44:07,955 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 07:44:07,964 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 07:44:07,966 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 07:44:07,973 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 07:44:07,974 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 07:44:07,974 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 07:44:07,975 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 07:44:07,977 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 07:44:07,978 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 07:44:07,979 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 07:44:07,980 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 07:44:07,982 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 07:44:07,983 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 07:44:07,984 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 07:44:07,984 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 07:44:07,985 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 07:44:07,985 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 07:44:07,985 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 07:44:07,987 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 07:44:07,988 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 07:44:07,989 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_5d8c23ea-78ed-46f7-9939-a5db99f29ef3/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2020-11-28 07:44:08,034 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 07:44:08,035 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 07:44:08,036 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-28 07:44:08,037 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-28 07:44:08,037 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-28 07:44:08,037 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-28 07:44:08,037 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-28 07:44:08,038 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-28 07:44:08,038 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-28 07:44:08,040 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 07:44:08,041 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 07:44:08,041 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 07:44:08,042 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 07:44:08,042 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 07:44:08,042 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 07:44:08,042 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 07:44:08,042 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-28 07:44:08,043 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-11-28 07:44:08,043 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-11-28 07:44:08,043 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 07:44:08,043 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 07:44:08,044 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 07:44:08,044 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 07:44:08,044 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 07:44:08,044 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-28 07:44:08,045 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 07:44:08,045 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 07:44:08,045 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 07:44:08,045 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 07:44:08,046 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 07:44:08,046 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 07:44:08,046 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2020-11-28 07:44:08,046 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-11-28 07:44:08,046 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 07:44:08,047 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 07:44:08,047 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-28 07:44:08,047 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_5d8c23ea-78ed-46f7-9939-a5db99f29ef3/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_5d8c23ea-78ed-46f7-9939-a5db99f29ef3/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5fb4ea5d2ba4e3ce5c37a1ed90f4b993cc1661a1 [2020-11-28 07:44:08,475 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 07:44:08,497 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 07:44:08,500 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 07:44:08,501 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 07:44:08,502 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 07:44:08,504 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_5d8c23ea-78ed-46f7-9939-a5db99f29ef3/bin/utaipan/../../sv-benchmarks/c/float-newlib/float_req_bl_1252b.c [2020-11-28 07:44:08,574 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_5d8c23ea-78ed-46f7-9939-a5db99f29ef3/bin/utaipan/data/c6dd49756/0040059c995c49c49044962634f00f5b/FLAG39a1ad32e [2020-11-28 07:44:09,011 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 07:44:09,012 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_5d8c23ea-78ed-46f7-9939-a5db99f29ef3/sv-benchmarks/c/float-newlib/float_req_bl_1252b.c [2020-11-28 07:44:09,024 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_5d8c23ea-78ed-46f7-9939-a5db99f29ef3/bin/utaipan/data/c6dd49756/0040059c995c49c49044962634f00f5b/FLAG39a1ad32e [2020-11-28 07:44:09,391 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_5d8c23ea-78ed-46f7-9939-a5db99f29ef3/bin/utaipan/data/c6dd49756/0040059c995c49c49044962634f00f5b [2020-11-28 07:44:09,393 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 07:44:09,395 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 07:44:09,402 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 07:44:09,402 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 07:44:09,405 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 07:44:09,406 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:44:09" (1/1) ... [2020-11-28 07:44:09,409 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a9194d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:44:09, skipping insertion in model container [2020-11-28 07:44:09,415 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:44:09" (1/1) ... [2020-11-28 07:44:09,423 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 07:44:09,441 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 07:44:09,600 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:44:09,614 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 07:44:09,637 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:44:09,659 INFO L208 MainTranslator]: Completed translation [2020-11-28 07:44:09,660 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:44:09 WrapperNode [2020-11-28 07:44:09,660 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 07:44:09,661 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 07:44:09,661 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 07:44:09,661 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 07:44:09,668 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:44:09" (1/1) ... [2020-11-28 07:44:09,682 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:44:09" (1/1) ... [2020-11-28 07:44:09,735 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 07:44:09,736 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 07:44:09,736 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 07:44:09,736 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 07:44:09,745 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:44:09" (1/1) ... [2020-11-28 07:44:09,746 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:44:09" (1/1) ... [2020-11-28 07:44:09,750 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:44:09" (1/1) ... [2020-11-28 07:44:09,751 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:44:09" (1/1) ... [2020-11-28 07:44:09,760 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:44:09" (1/1) ... [2020-11-28 07:44:09,779 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:44:09" (1/1) ... [2020-11-28 07:44:09,782 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:44:09" (1/1) ... [2020-11-28 07:44:09,785 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 07:44:09,786 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 07:44:09,787 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 07:44:09,787 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 07:44:09,788 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:44:09" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5d8c23ea-78ed-46f7-9939-a5db99f29ef3/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 07:44:09,872 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-11-28 07:44:09,873 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 07:44:09,873 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-11-28 07:44:09,873 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 07:44:09,873 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 07:44:09,874 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2020-11-28 07:44:09,874 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-28 07:44:10,495 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 07:44:10,495 INFO L298 CfgBuilder]: Removed 20 assume(true) statements. [2020-11-28 07:44:10,497 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:44:10 BoogieIcfgContainer [2020-11-28 07:44:10,497 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 07:44:10,512 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 07:44:10,512 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 07:44:10,515 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 07:44:10,515 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 07:44:09" (1/3) ... [2020-11-28 07:44:10,516 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b2082d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:44:10, skipping insertion in model container [2020-11-28 07:44:10,516 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:44:09" (2/3) ... [2020-11-28 07:44:10,517 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b2082d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:44:10, skipping insertion in model container [2020-11-28 07:44:10,517 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:44:10" (3/3) ... [2020-11-28 07:44:10,518 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1252b.c [2020-11-28 07:44:10,529 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 07:44:10,534 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-28 07:44:10,546 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-28 07:44:10,571 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 07:44:10,572 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 07:44:10,572 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 07:44:10,572 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 07:44:10,572 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 07:44:10,572 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 07:44:10,572 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 07:44:10,573 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 07:44:10,585 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2020-11-28 07:44:10,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-28 07:44:10,591 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:44:10,591 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:44:10,592 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:44:10,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:44:10,598 INFO L82 PathProgramCache]: Analyzing trace with hash -958075201, now seen corresponding path program 1 times [2020-11-28 07:44:10,609 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-28 07:44:10,610 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1392310343] [2020-11-28 07:44:10,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5d8c23ea-78ed-46f7-9939-a5db99f29ef3/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 07:44:10,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:44:10,710 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 1 conjunts are in the unsatisfiable core [2020-11-28 07:44:10,715 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:44:10,736 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 07:44:10,737 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:44:10,741 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 07:44:10,742 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1392310343] [2020-11-28 07:44:10,743 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:44:10,744 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-11-28 07:44:10,744 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893227298] [2020-11-28 07:44:10,748 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-28 07:44:10,749 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-28 07:44:10,764 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-28 07:44:10,765 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-28 07:44:10,767 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 2 states. [2020-11-28 07:44:10,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:44:10,791 INFO L93 Difference]: Finished difference Result 63 states and 99 transitions. [2020-11-28 07:44:10,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-28 07:44:10,794 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-11-28 07:44:10,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:44:10,813 INFO L225 Difference]: With dead ends: 63 [2020-11-28 07:44:10,816 INFO L226 Difference]: Without dead ends: 29 [2020-11-28 07:44:10,822 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 07:44:10,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-11-28 07:44:10,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-11-28 07:44:10,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-11-28 07:44:10,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 40 transitions. [2020-11-28 07:44:10,862 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 40 transitions. Word has length 10 [2020-11-28 07:44:10,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:44:10,862 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 40 transitions. [2020-11-28 07:44:10,862 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-28 07:44:10,863 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 40 transitions. [2020-11-28 07:44:10,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-28 07:44:10,864 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:44:10,864 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:44:11,085 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-11-28 07:44:11,085 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:44:11,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:44:11,086 INFO L82 PathProgramCache]: Analyzing trace with hash 1001584898, now seen corresponding path program 1 times [2020-11-28 07:44:11,087 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-28 07:44:11,087 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1424504940] [2020-11-28 07:44:11,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5d8c23ea-78ed-46f7-9939-a5db99f29ef3/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 07:44:11,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:44:11,166 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 3 conjunts are in the unsatisfiable core [2020-11-28 07:44:11,167 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:44:11,194 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 07:44:11,194 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:44:11,217 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 07:44:11,217 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1424504940] [2020-11-28 07:44:11,217 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:44:11,217 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2020-11-28 07:44:11,218 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135683513] [2020-11-28 07:44:11,219 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-28 07:44:11,219 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-28 07:44:11,220 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-28 07:44:11,220 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-28 07:44:11,220 INFO L87 Difference]: Start difference. First operand 29 states and 40 transitions. Second operand 6 states. [2020-11-28 07:44:11,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:44:11,366 INFO L93 Difference]: Finished difference Result 68 states and 85 transitions. [2020-11-28 07:44:11,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-28 07:44:11,376 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2020-11-28 07:44:11,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:44:11,378 INFO L225 Difference]: With dead ends: 68 [2020-11-28 07:44:11,379 INFO L226 Difference]: Without dead ends: 59 [2020-11-28 07:44:11,381 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-11-28 07:44:11,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-11-28 07:44:11,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 31. [2020-11-28 07:44:11,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-11-28 07:44:11,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 42 transitions. [2020-11-28 07:44:11,398 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 42 transitions. Word has length 11 [2020-11-28 07:44:11,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:44:11,398 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 42 transitions. [2020-11-28 07:44:11,399 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-28 07:44:11,399 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 42 transitions. [2020-11-28 07:44:11,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-28 07:44:11,400 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:44:11,400 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:44:11,613 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-11-28 07:44:11,614 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:44:11,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:44:11,614 INFO L82 PathProgramCache]: Analyzing trace with hash 1219247017, now seen corresponding path program 1 times [2020-11-28 07:44:11,615 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-28 07:44:11,615 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [126306223] [2020-11-28 07:44:11,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5d8c23ea-78ed-46f7-9939-a5db99f29ef3/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 07:44:11,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:44:11,694 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 9 conjunts are in the unsatisfiable core [2020-11-28 07:44:11,696 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:44:11,725 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 07:44:11,726 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:44:11,778 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 07:44:11,778 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [126306223] [2020-11-28 07:44:11,779 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:44:11,779 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2020-11-28 07:44:11,779 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800558729] [2020-11-28 07:44:11,780 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 07:44:11,780 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-28 07:44:11,780 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 07:44:11,781 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 07:44:11,781 INFO L87 Difference]: Start difference. First operand 31 states and 42 transitions. Second operand 4 states. [2020-11-28 07:44:11,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:44:11,847 INFO L93 Difference]: Finished difference Result 52 states and 69 transitions. [2020-11-28 07:44:11,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 07:44:11,848 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-11-28 07:44:11,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:44:11,849 INFO L225 Difference]: With dead ends: 52 [2020-11-28 07:44:11,849 INFO L226 Difference]: Without dead ends: 26 [2020-11-28 07:44:11,849 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 07:44:11,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-11-28 07:44:11,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2020-11-28 07:44:11,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-11-28 07:44:11,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 32 transitions. [2020-11-28 07:44:11,854 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 32 transitions. Word has length 14 [2020-11-28 07:44:11,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:44:11,854 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 32 transitions. [2020-11-28 07:44:11,854 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 07:44:11,854 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 32 transitions. [2020-11-28 07:44:11,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-28 07:44:11,855 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:44:11,855 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:44:12,066 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-11-28 07:44:12,066 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:44:12,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:44:12,066 INFO L82 PathProgramCache]: Analyzing trace with hash 1012446717, now seen corresponding path program 1 times [2020-11-28 07:44:12,067 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-28 07:44:12,067 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1152121886] [2020-11-28 07:44:12,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5d8c23ea-78ed-46f7-9939-a5db99f29ef3/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 07:44:12,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:44:12,158 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 3 conjunts are in the unsatisfiable core [2020-11-28 07:44:12,160 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:44:12,180 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 07:44:12,181 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:44:12,202 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 07:44:12,203 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1152121886] [2020-11-28 07:44:12,203 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:44:12,203 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2020-11-28 07:44:12,203 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879143113] [2020-11-28 07:44:12,204 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-28 07:44:12,204 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-28 07:44:12,205 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-28 07:44:12,205 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-28 07:44:12,205 INFO L87 Difference]: Start difference. First operand 26 states and 32 transitions. Second operand 6 states. [2020-11-28 07:44:12,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:44:12,298 INFO L93 Difference]: Finished difference Result 61 states and 71 transitions. [2020-11-28 07:44:12,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-28 07:44:12,301 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2020-11-28 07:44:12,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:44:12,302 INFO L225 Difference]: With dead ends: 61 [2020-11-28 07:44:12,302 INFO L226 Difference]: Without dead ends: 52 [2020-11-28 07:44:12,303 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 07:44:12,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-11-28 07:44:12,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 28. [2020-11-28 07:44:12,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-11-28 07:44:12,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 34 transitions. [2020-11-28 07:44:12,308 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 34 transitions. Word has length 16 [2020-11-28 07:44:12,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:44:12,309 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 34 transitions. [2020-11-28 07:44:12,309 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-28 07:44:12,309 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 34 transitions. [2020-11-28 07:44:12,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-28 07:44:12,310 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:44:12,310 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 07:44:12,523 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-11-28 07:44:12,524 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:44:12,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:44:12,524 INFO L82 PathProgramCache]: Analyzing trace with hash -414082333, now seen corresponding path program 1 times [2020-11-28 07:44:12,525 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-28 07:44:12,525 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [869109941] [2020-11-28 07:44:12,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5d8c23ea-78ed-46f7-9939-a5db99f29ef3/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 07:44:12,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:44:12,615 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-28 07:44:12,616 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:44:12,632 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 07:44:12,632 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:44:12,658 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 07:44:12,659 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [869109941] [2020-11-28 07:44:12,659 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:44:12,659 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2020-11-28 07:44:12,659 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208895627] [2020-11-28 07:44:12,659 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 07:44:12,659 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-28 07:44:12,660 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 07:44:12,660 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-28 07:44:12,660 INFO L87 Difference]: Start difference. First operand 28 states and 34 transitions. Second operand 4 states. [2020-11-28 07:44:12,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:44:12,674 INFO L93 Difference]: Finished difference Result 38 states and 44 transitions. [2020-11-28 07:44:12,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:44:12,675 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2020-11-28 07:44:12,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:44:12,675 INFO L225 Difference]: With dead ends: 38 [2020-11-28 07:44:12,675 INFO L226 Difference]: Without dead ends: 28 [2020-11-28 07:44:12,676 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 07:44:12,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-11-28 07:44:12,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-11-28 07:44:12,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-11-28 07:44:12,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 33 transitions. [2020-11-28 07:44:12,680 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 33 transitions. Word has length 18 [2020-11-28 07:44:12,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:44:12,681 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 33 transitions. [2020-11-28 07:44:12,681 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 07:44:12,681 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 33 transitions. [2020-11-28 07:44:12,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-28 07:44:12,682 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:44:12,682 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 07:44:12,882 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2020-11-28 07:44:12,883 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:44:12,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:44:12,883 INFO L82 PathProgramCache]: Analyzing trace with hash -356824031, now seen corresponding path program 1 times [2020-11-28 07:44:12,884 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-28 07:44:12,884 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1108262967] [2020-11-28 07:44:12,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5d8c23ea-78ed-46f7-9939-a5db99f29ef3/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 07:44:12,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:44:12,970 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 8 conjunts are in the unsatisfiable core [2020-11-28 07:44:12,971 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:44:13,023 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 07:44:13,023 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:44:13,076 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 07:44:13,076 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1108262967] [2020-11-28 07:44:13,076 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:44:13,076 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 9 [2020-11-28 07:44:13,076 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209887710] [2020-11-28 07:44:13,077 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-11-28 07:44:13,077 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-28 07:44:13,077 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-11-28 07:44:13,078 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-11-28 07:44:13,078 INFO L87 Difference]: Start difference. First operand 28 states and 33 transitions. Second operand 9 states. [2020-11-28 07:44:13,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:44:13,190 INFO L93 Difference]: Finished difference Result 40 states and 44 transitions. [2020-11-28 07:44:13,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-28 07:44:13,190 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 18 [2020-11-28 07:44:13,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:44:13,191 INFO L225 Difference]: With dead ends: 40 [2020-11-28 07:44:13,191 INFO L226 Difference]: Without dead ends: 37 [2020-11-28 07:44:13,192 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 07:44:13,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-11-28 07:44:13,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 30. [2020-11-28 07:44:13,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-11-28 07:44:13,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 35 transitions. [2020-11-28 07:44:13,196 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 35 transitions. Word has length 18 [2020-11-28 07:44:13,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:44:13,196 INFO L481 AbstractCegarLoop]: Abstraction has 30 states and 35 transitions. [2020-11-28 07:44:13,196 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-11-28 07:44:13,196 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 35 transitions. [2020-11-28 07:44:13,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-11-28 07:44:13,197 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:44:13,197 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 07:44:13,397 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 mathsat -unsat_core_generation=3 [2020-11-28 07:44:13,398 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:44:13,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:44:13,402 INFO L82 PathProgramCache]: Analyzing trace with hash -208358251, now seen corresponding path program 1 times [2020-11-28 07:44:13,402 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-28 07:44:13,402 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1188600293] [2020-11-28 07:44:13,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5d8c23ea-78ed-46f7-9939-a5db99f29ef3/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 07:44:13,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:44:13,489 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 9 conjunts are in the unsatisfiable core [2020-11-28 07:44:13,491 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:44:13,537 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 07:44:13,537 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:44:13,573 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 07:44:13,573 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1188600293] [2020-11-28 07:44:13,573 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:44:13,573 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2020-11-28 07:44:13,574 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931989601] [2020-11-28 07:44:13,574 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 07:44:13,574 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-28 07:44:13,574 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 07:44:13,575 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-28 07:44:13,575 INFO L87 Difference]: Start difference. First operand 30 states and 35 transitions. Second operand 5 states. [2020-11-28 07:44:13,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:44:13,631 INFO L93 Difference]: Finished difference Result 43 states and 47 transitions. [2020-11-28 07:44:13,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 07:44:13,639 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 19 [2020-11-28 07:44:13,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:44:13,640 INFO L225 Difference]: With dead ends: 43 [2020-11-28 07:44:13,640 INFO L226 Difference]: Without dead ends: 23 [2020-11-28 07:44:13,640 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 07:44:13,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-11-28 07:44:13,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2020-11-28 07:44:13,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-11-28 07:44:13,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 22 transitions. [2020-11-28 07:44:13,644 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 22 transitions. Word has length 19 [2020-11-28 07:44:13,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:44:13,644 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 22 transitions. [2020-11-28 07:44:13,644 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 07:44:13,644 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 22 transitions. [2020-11-28 07:44:13,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-11-28 07:44:13,645 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:44:13,645 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 07:44:13,860 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 mathsat -unsat_core_generation=3 [2020-11-28 07:44:13,861 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:44:13,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:44:13,861 INFO L82 PathProgramCache]: Analyzing trace with hash -1524231306, now seen corresponding path program 1 times [2020-11-28 07:44:13,861 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-28 07:44:13,862 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1261878566] [2020-11-28 07:44:13,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5d8c23ea-78ed-46f7-9939-a5db99f29ef3/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 07:44:13,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 07:44:13,996 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 07:44:14,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 07:44:14,115 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 07:44:14,166 INFO L173 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2020-11-28 07:44:14,166 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-28 07:44:14,376 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 mathsat -unsat_core_generation=3 [2020-11-28 07:44:14,412 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 07:44:14 BoogieIcfgContainer [2020-11-28 07:44:14,412 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 07:44:14,413 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 07:44:14,413 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 07:44:14,413 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 07:44:14,414 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:44:10" (3/4) ... [2020-11-28 07:44:14,416 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-28 07:44:14,476 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_5d8c23ea-78ed-46f7-9939-a5db99f29ef3/bin/utaipan/witness.graphml [2020-11-28 07:44:14,476 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 07:44:14,478 INFO L168 Benchmark]: Toolchain (without parser) took 5082.83 ms. Allocated memory was 54.5 MB in the beginning and 81.8 MB in the end (delta: 27.3 MB). Free memory was 32.5 MB in the beginning and 33.4 MB in the end (delta: -912.6 kB). Peak memory consumption was 27.0 MB. Max. memory is 16.1 GB. [2020-11-28 07:44:14,486 INFO L168 Benchmark]: CDTParser took 0.33 ms. Allocated memory is still 54.5 MB. Free memory was 37.5 MB in the beginning and 37.5 MB in the end (delta: 37.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:44:14,487 INFO L168 Benchmark]: CACSL2BoogieTranslator took 258.65 ms. Allocated memory is still 54.5 MB. Free memory was 32.2 MB in the beginning and 35.0 MB in the end (delta: -2.8 MB). Peak memory consumption was 7.2 MB. Max. memory is 16.1 GB. [2020-11-28 07:44:14,488 INFO L168 Benchmark]: Boogie Procedure Inliner took 74.17 ms. Allocated memory was 54.5 MB in the beginning and 67.1 MB in the end (delta: 12.6 MB). Free memory was 35.0 MB in the beginning and 50.7 MB in the end (delta: -15.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 07:44:14,488 INFO L168 Benchmark]: Boogie Preprocessor took 49.78 ms. Allocated memory is still 67.1 MB. Free memory was 50.7 MB in the beginning and 49.1 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:44:14,489 INFO L168 Benchmark]: RCFGBuilder took 710.80 ms. Allocated memory is still 67.1 MB. Free memory was 49.1 MB in the beginning and 29.2 MB in the end (delta: 19.9 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. [2020-11-28 07:44:14,490 INFO L168 Benchmark]: TraceAbstraction took 3900.83 ms. Allocated memory was 67.1 MB in the beginning and 81.8 MB in the end (delta: 14.7 MB). Free memory was 50.4 MB in the beginning and 36.1 MB in the end (delta: 14.2 MB). Peak memory consumption was 28.4 MB. Max. memory is 16.1 GB. [2020-11-28 07:44:14,490 INFO L168 Benchmark]: Witness Printer took 63.56 ms. Allocated memory is still 81.8 MB. Free memory was 36.1 MB in the beginning and 33.4 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 07:44:14,493 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33 ms. Allocated memory is still 54.5 MB. Free memory was 37.5 MB in the beginning and 37.5 MB in the end (delta: 37.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 258.65 ms. Allocated memory is still 54.5 MB. Free memory was 32.2 MB in the beginning and 35.0 MB in the end (delta: -2.8 MB). Peak memory consumption was 7.2 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 74.17 ms. Allocated memory was 54.5 MB in the beginning and 67.1 MB in the end (delta: 12.6 MB). Free memory was 35.0 MB in the beginning and 50.7 MB in the end (delta: -15.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 49.78 ms. Allocated memory is still 67.1 MB. Free memory was 50.7 MB in the beginning and 49.1 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 710.80 ms. Allocated memory is still 67.1 MB. Free memory was 49.1 MB in the beginning and 29.2 MB in the end (delta: 19.9 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 3900.83 ms. Allocated memory was 67.1 MB in the beginning and 81.8 MB in the end (delta: 14.7 MB). Free memory was 50.4 MB in the beginning and 36.1 MB in the end (delta: 14.2 MB). Peak memory consumption was 28.4 MB. Max. memory is 16.1 GB. * Witness Printer took 63.56 ms. Allocated memory is still 81.8 MB. Free memory was 36.1 MB in the beginning and 33.4 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: [L75] float x = 0.0f; [L76] float y = -0.0f; [L23] __uint32_t w; [L26] ieee_float_shape_type gf_u; [L27] gf_u.value = (x) [L28] EXPR gf_u.word [L28] (w) = gf_u.word [L31] COND TRUE w == 0x00000000 || w == 0x80000000 [L32] return 2; [L46] COND FALSE !(__fpclassify_float(x) == 0) [L23] __uint32_t w; [L26] ieee_float_shape_type gf_u; [L27] gf_u.value = (x) [L28] EXPR gf_u.word [L28] (w) = gf_u.word [L31] COND TRUE w == 0x00000000 || w == 0x80000000 [L32] return 2; [L50] COND FALSE !(__fpclassify_float(y) == 0) [L53] EXPR x > y ? x : y [L53] return x > y ? x : y; [L77] float res = fmax_float(x, y); [L80] EXPR res == 0.0f && __signbit_float(res) == 0 [L57] __uint32_t w; [L60] ieee_float_shape_type gf_u; [L61] gf_u.value = (x) [L62] EXPR gf_u.word [L62] (w) = gf_u.word [L65] return (w & 0x80000000) != 0; [L80] EXPR res == 0.0f && __signbit_float(res) == 0 [L80] COND TRUE !(res == 0.0f && __signbit_float(res) == 0) [L3] __assert_fail("0", "float_req_bl_1252b.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: 3.8s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 0.5s, 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, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 209 GetRequests, 169 SyntacticMatches, 7 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s 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, 0.3s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 128 NumberOfCodeBlocks, 128 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 198 ConstructedInterpolants, 0 QuantifiedInterpolants, 7973 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...