./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/double_req_bl_0730b.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_26aa13ad-1d23-445b-954f-a6e71396392f/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_26aa13ad-1d23-445b-954f-a6e71396392f/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_26aa13ad-1d23-445b-954f-a6e71396392f/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_26aa13ad-1d23-445b-954f-a6e71396392f/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_0730b.c -s /tmp/vcloud-vcloud-master/worker/run_dir_26aa13ad-1d23-445b-954f-a6e71396392f/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_26aa13ad-1d23-445b-954f-a6e71396392f/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 8e7d1cf180b9d7ec82be720739bf017cddebb7c7 .......................................................................................................................................................................................................................................................................................................... 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_26aa13ad-1d23-445b-954f-a6e71396392f/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_26aa13ad-1d23-445b-954f-a6e71396392f/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_26aa13ad-1d23-445b-954f-a6e71396392f/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_26aa13ad-1d23-445b-954f-a6e71396392f/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_0730b.c -s /tmp/vcloud-vcloud-master/worker/run_dir_26aa13ad-1d23-445b-954f-a6e71396392f/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_26aa13ad-1d23-445b-954f-a6e71396392f/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 8e7d1cf180b9d7ec82be720739bf017cddebb7c7 ................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-28 07:42:52,327 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 07:42:52,330 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 07:42:52,415 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 07:42:52,415 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 07:42:52,421 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 07:42:52,423 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 07:42:52,430 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 07:42:52,433 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 07:42:52,439 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 07:42:52,440 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 07:42:52,442 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 07:42:52,442 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 07:42:52,446 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 07:42:52,447 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 07:42:52,450 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 07:42:52,451 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 07:42:52,454 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 07:42:52,457 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 07:42:52,465 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 07:42:52,467 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 07:42:52,468 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 07:42:52,471 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 07:42:52,472 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 07:42:52,480 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 07:42:52,481 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 07:42:52,481 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 07:42:52,483 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 07:42:52,484 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 07:42:52,485 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 07:42:52,486 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 07:42:52,487 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 07:42:52,489 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 07:42:52,490 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 07:42:52,491 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 07:42:52,491 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 07:42:52,492 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 07:42:52,492 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 07:42:52,493 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 07:42:52,495 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 07:42:52,495 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 07:42:52,498 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_26aa13ad-1d23-445b-954f-a6e71396392f/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-11-28 07:42:52,539 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 07:42:52,540 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 07:42:52,541 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-28 07:42:52,541 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-28 07:42:52,541 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-28 07:42:52,542 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-28 07:42:52,542 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-28 07:42:52,542 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-28 07:42:52,542 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-28 07:42:52,542 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-28 07:42:52,544 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-28 07:42:52,544 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-28 07:42:52,544 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-28 07:42:52,544 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-28 07:42:52,545 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-28 07:42:52,545 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 07:42:52,546 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 07:42:52,546 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 07:42:52,546 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 07:42:52,546 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 07:42:52,546 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 07:42:52,546 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 07:42:52,547 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 07:42:52,547 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-28 07:42:52,547 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 07:42:52,547 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 07:42:52,547 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 07:42:52,548 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 07:42:52,548 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 07:42:52,548 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 07:42:52,548 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 07:42:52,549 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 07:42:52,549 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 07:42:52,549 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 07:42:52,549 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 07:42:52,550 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-28 07:42:52,550 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 07:42:52,550 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 07:42:52,550 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 07:42:52,550 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-28 07:42:52,551 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_26aa13ad-1d23-445b-954f-a6e71396392f/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_26aa13ad-1d23-445b-954f-a6e71396392f/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8e7d1cf180b9d7ec82be720739bf017cddebb7c7 [2020-11-28 07:42:52,834 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 07:42:52,867 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 07:42:52,870 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 07:42:52,871 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 07:42:52,876 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 07:42:52,877 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_26aa13ad-1d23-445b-954f-a6e71396392f/bin/utaipan/../../sv-benchmarks/c/float-newlib/double_req_bl_0730b.c [2020-11-28 07:42:52,951 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_26aa13ad-1d23-445b-954f-a6e71396392f/bin/utaipan/data/ba5e24368/297a94237bb9451b92bac49577d43ef9/FLAG8240dd035 [2020-11-28 07:42:53,381 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 07:42:53,382 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_26aa13ad-1d23-445b-954f-a6e71396392f/sv-benchmarks/c/float-newlib/double_req_bl_0730b.c [2020-11-28 07:42:53,396 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_26aa13ad-1d23-445b-954f-a6e71396392f/bin/utaipan/data/ba5e24368/297a94237bb9451b92bac49577d43ef9/FLAG8240dd035 [2020-11-28 07:42:53,765 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_26aa13ad-1d23-445b-954f-a6e71396392f/bin/utaipan/data/ba5e24368/297a94237bb9451b92bac49577d43ef9 [2020-11-28 07:42:53,768 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 07:42:53,769 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 07:42:53,772 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 07:42:53,773 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 07:42:53,776 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 07:42:53,777 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:42:53" (1/1) ... [2020-11-28 07:42:53,779 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1cafc490 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:42:53, skipping insertion in model container [2020-11-28 07:42:53,779 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:42:53" (1/1) ... [2020-11-28 07:42:53,786 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 07:42:53,806 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 07:42:54,064 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:42:54,078 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 07:42:54,146 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:42:54,173 INFO L208 MainTranslator]: Completed translation [2020-11-28 07:42:54,175 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:42:54 WrapperNode [2020-11-28 07:42:54,176 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 07:42:54,178 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 07:42:54,178 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 07:42:54,179 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 07:42:54,186 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:42:54" (1/1) ... [2020-11-28 07:42:54,207 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:42:54" (1/1) ... [2020-11-28 07:42:54,257 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 07:42:54,258 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 07:42:54,259 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 07:42:54,259 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 07:42:54,268 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:42:54" (1/1) ... [2020-11-28 07:42:54,269 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:42:54" (1/1) ... [2020-11-28 07:42:54,284 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:42:54" (1/1) ... [2020-11-28 07:42:54,284 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:42:54" (1/1) ... [2020-11-28 07:42:54,299 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:42:54" (1/1) ... [2020-11-28 07:42:54,318 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:42:54" (1/1) ... [2020-11-28 07:42:54,323 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:42:54" (1/1) ... [2020-11-28 07:42:54,333 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 07:42:54,334 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 07:42:54,334 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 07:42:54,334 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 07:42:54,335 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:42:54" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_26aa13ad-1d23-445b-954f-a6e71396392f/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 07:42:54,417 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-28 07:42:54,417 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 07:42:54,417 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-11-28 07:42:54,417 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-28 07:42:54,418 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-11-28 07:42:54,418 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 07:42:54,418 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 07:42:54,418 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-28 07:42:54,420 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-28 07:42:55,749 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 07:42:55,749 INFO L298 CfgBuilder]: Removed 20 assume(true) statements. [2020-11-28 07:42:55,751 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:42:55 BoogieIcfgContainer [2020-11-28 07:42:55,751 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 07:42:55,753 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 07:42:55,753 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 07:42:55,757 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 07:42:55,758 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 07:42:53" (1/3) ... [2020-11-28 07:42:55,759 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38700131 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:42:55, skipping insertion in model container [2020-11-28 07:42:55,759 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:42:54" (2/3) ... [2020-11-28 07:42:55,759 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38700131 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:42:55, skipping insertion in model container [2020-11-28 07:42:55,759 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:42:55" (3/3) ... [2020-11-28 07:42:55,761 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_0730b.c [2020-11-28 07:42:55,771 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 07:42:55,775 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-28 07:42:55,788 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-28 07:42:55,812 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 07:42:55,813 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 07:42:55,813 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 07:42:55,813 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 07:42:55,813 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 07:42:55,813 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 07:42:55,813 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 07:42:55,813 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 07:42:55,827 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states. [2020-11-28 07:42:55,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-11-28 07:42:55,832 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:42:55,833 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:42:55,833 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:42:55,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:42:55,839 INFO L82 PathProgramCache]: Analyzing trace with hash 1451113073, now seen corresponding path program 1 times [2020-11-28 07:42:55,849 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:42:55,849 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1584734091] [2020-11-28 07:42:55,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:42:55,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:42:55,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:42:55,976 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1584734091] [2020-11-28 07:42:55,977 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:42:55,977 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 07:42:55,978 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760436517] [2020-11-28 07:42:55,982 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-28 07:42:55,982 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:42:55,995 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-28 07:42:55,996 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-28 07:42:55,998 INFO L87 Difference]: Start difference. First operand 27 states. Second operand 2 states. [2020-11-28 07:42:56,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:42:56,019 INFO L93 Difference]: Finished difference Result 53 states and 85 transitions. [2020-11-28 07:42:56,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-28 07:42:56,022 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 7 [2020-11-28 07:42:56,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:42:56,038 INFO L225 Difference]: With dead ends: 53 [2020-11-28 07:42:56,039 INFO L226 Difference]: Without dead ends: 25 [2020-11-28 07:42:56,043 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-28 07:42:56,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2020-11-28 07:42:56,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2020-11-28 07:42:56,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-11-28 07:42:56,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 34 transitions. [2020-11-28 07:42:56,086 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 34 transitions. Word has length 7 [2020-11-28 07:42:56,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:42:56,087 INFO L481 AbstractCegarLoop]: Abstraction has 25 states and 34 transitions. [2020-11-28 07:42:56,087 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-28 07:42:56,088 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 34 transitions. [2020-11-28 07:42:56,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-28 07:42:56,088 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:42:56,089 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:42:56,089 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-28 07:42:56,090 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:42:56,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:42:56,094 INFO L82 PathProgramCache]: Analyzing trace with hash -237034198, now seen corresponding path program 1 times [2020-11-28 07:42:56,094 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:42:56,095 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578165143] [2020-11-28 07:42:56,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:42:56,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 07:42:56,165 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 07:42:56,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 07:42:56,223 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 07:42:56,249 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2020-11-28 07:42:56,249 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-28 07:42:56,250 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-28 07:42:56,279 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 07:42:56 BoogieIcfgContainer [2020-11-28 07:42:56,279 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 07:42:56,280 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 07:42:56,280 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 07:42:56,280 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 07:42:56,281 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:42:55" (3/4) ... [2020-11-28 07:42:56,284 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-28 07:42:56,284 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 07:42:56,287 INFO L168 Benchmark]: Toolchain (without parser) took 2516.33 ms. Allocated memory was 92.3 MB in the beginning and 113.2 MB in the end (delta: 21.0 MB). Free memory was 61.4 MB in the beginning and 51.4 MB in the end (delta: 10.0 MB). Peak memory consumption was 27.3 MB. Max. memory is 16.1 GB. [2020-11-28 07:42:56,287 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 92.3 MB. Free memory is still 53.6 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:42:56,288 INFO L168 Benchmark]: CACSL2BoogieTranslator took 403.78 ms. Allocated memory was 92.3 MB in the beginning and 113.2 MB in the end (delta: 21.0 MB). Free memory was 61.1 MB in the beginning and 87.9 MB in the end (delta: -26.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-28 07:42:56,289 INFO L168 Benchmark]: Boogie Procedure Inliner took 79.70 ms. Allocated memory is still 113.2 MB. Free memory was 87.9 MB in the beginning and 85.8 MB in the end (delta: 2.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:42:56,290 INFO L168 Benchmark]: Boogie Preprocessor took 74.55 ms. Allocated memory is still 113.2 MB. Free memory was 85.8 MB in the beginning and 83.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-28 07:42:56,291 INFO L168 Benchmark]: RCFGBuilder took 1417.69 ms. Allocated memory is still 113.2 MB. Free memory was 83.8 MB in the beginning and 73.9 MB in the end (delta: 9.9 MB). Peak memory consumption was 54.5 MB. Max. memory is 16.1 GB. [2020-11-28 07:42:56,291 INFO L168 Benchmark]: TraceAbstraction took 526.61 ms. Allocated memory is still 113.2 MB. Free memory was 73.9 MB in the beginning and 51.7 MB in the end (delta: 22.2 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. [2020-11-28 07:42:56,292 INFO L168 Benchmark]: Witness Printer took 4.55 ms. Allocated memory is still 113.2 MB. Free memory was 51.7 MB in the beginning and 51.4 MB in the end (delta: 310.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:42:56,296 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 92.3 MB. Free memory is still 53.6 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 403.78 ms. Allocated memory was 92.3 MB in the beginning and 113.2 MB in the end (delta: 21.0 MB). Free memory was 61.1 MB in the beginning and 87.9 MB in the end (delta: -26.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 79.70 ms. Allocated memory is still 113.2 MB. Free memory was 87.9 MB in the beginning and 85.8 MB in the end (delta: 2.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 74.55 ms. Allocated memory is still 113.2 MB. Free memory was 85.8 MB in the beginning and 83.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1417.69 ms. Allocated memory is still 113.2 MB. Free memory was 83.8 MB in the beginning and 73.9 MB in the end (delta: 9.9 MB). Peak memory consumption was 54.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 526.61 ms. Allocated memory is still 113.2 MB. Free memory was 73.9 MB in the beginning and 51.7 MB in the end (delta: 22.2 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. * Witness Printer took 4.55 ms. Allocated memory is still 113.2 MB. Free memory was 51.7 MB in the beginning and 51.4 MB in the end (delta: 310.7 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 someUnaryDOUBLEoperation at line 151, overapproximation of someBinaryArithmeticDOUBLEoperation at line 35, overapproximation of bitwiseAnd at line 34, overapproximation of someBinaryDOUBLEComparisonOperation at line 155. Possible FailurePath: [L19] static const double one_sqrt = 1.0, tiny_sqrt = 1.0e-300; [L151] double x = -0.0; [L22] double z; [L23] __int32_t sign = 0x80000000; [L24] __uint32_t r, t1, s1, ix1, q1; [L25] __int32_t ix0, s0, q, m, t, i; VAL [one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L28] ieee_double_shape_type ew_u; [L29] ew_u.value = (x) [L30] EXPR ew_u.parts.msw [L30] (ix0) = ew_u.parts.msw [L31] EXPR ew_u.parts.lsw [L31] (ix1) = ew_u.parts.lsw [L34] COND TRUE (ix0 & 0x7ff00000) == 0x7ff00000 [L35] return x * x + x; VAL [one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L152] double res = __ieee754_sqrt(x); [L155] EXPR res == -0.0 && __signbit_double(res) == 1 VAL [one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L155] COND TRUE !(res == -0.0 && __signbit_double(res) == 1) [L3] __assert_fail("0", "double_req_bl_0730b.c", 3, "reach_error") VAL [one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 27 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: 36 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=27occurred 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, 15 NumberOfCodeBlocks, 15 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 6 ConstructedInterpolants, 0 QuantifiedInterpolants, 36 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.0-a4ecdab [2020-11-28 07:42:58,970 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 07:42:58,974 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 07:42:59,014 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 07:42:59,014 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 07:42:59,015 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 07:42:59,017 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 07:42:59,020 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 07:42:59,022 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 07:42:59,023 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 07:42:59,025 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 07:42:59,026 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 07:42:59,027 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 07:42:59,028 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 07:42:59,029 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 07:42:59,031 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 07:42:59,032 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 07:42:59,033 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 07:42:59,035 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 07:42:59,037 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 07:42:59,039 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 07:42:59,041 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 07:42:59,042 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 07:42:59,043 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 07:42:59,047 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 07:42:59,048 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 07:42:59,048 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 07:42:59,049 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 07:42:59,050 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 07:42:59,051 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 07:42:59,051 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 07:42:59,052 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 07:42:59,053 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 07:42:59,054 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 07:42:59,055 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 07:42:59,059 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 07:42:59,060 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 07:42:59,061 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 07:42:59,061 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 07:42:59,062 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 07:42:59,063 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 07:42:59,066 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_26aa13ad-1d23-445b-954f-a6e71396392f/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2020-11-28 07:42:59,092 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 07:42:59,092 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 07:42:59,093 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-28 07:42:59,093 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-28 07:42:59,093 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-28 07:42:59,093 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-28 07:42:59,094 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-28 07:42:59,094 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-28 07:42:59,094 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-28 07:42:59,095 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 07:42:59,095 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 07:42:59,095 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 07:42:59,096 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 07:42:59,096 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 07:42:59,096 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 07:42:59,096 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 07:42:59,096 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-28 07:42:59,097 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-11-28 07:42:59,097 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-11-28 07:42:59,097 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 07:42:59,097 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 07:42:59,098 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 07:42:59,098 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 07:42:59,098 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 07:42:59,098 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-28 07:42:59,099 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 07:42:59,099 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 07:42:59,099 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 07:42:59,099 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 07:42:59,100 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 07:42:59,100 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 07:42:59,100 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2020-11-28 07:42:59,100 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-11-28 07:42:59,100 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 07:42:59,101 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 07:42:59,119 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-28 07:42:59,119 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_26aa13ad-1d23-445b-954f-a6e71396392f/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_26aa13ad-1d23-445b-954f-a6e71396392f/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8e7d1cf180b9d7ec82be720739bf017cddebb7c7 [2020-11-28 07:42:59,515 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 07:42:59,549 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 07:42:59,554 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 07:42:59,555 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 07:42:59,558 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 07:42:59,559 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_26aa13ad-1d23-445b-954f-a6e71396392f/bin/utaipan/../../sv-benchmarks/c/float-newlib/double_req_bl_0730b.c [2020-11-28 07:42:59,640 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_26aa13ad-1d23-445b-954f-a6e71396392f/bin/utaipan/data/9d2c4eff3/9ef64a2c3ef54d5db93a155c8dac24ad/FLAG7c2292b06 [2020-11-28 07:43:00,137 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 07:43:00,142 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_26aa13ad-1d23-445b-954f-a6e71396392f/sv-benchmarks/c/float-newlib/double_req_bl_0730b.c [2020-11-28 07:43:00,151 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_26aa13ad-1d23-445b-954f-a6e71396392f/bin/utaipan/data/9d2c4eff3/9ef64a2c3ef54d5db93a155c8dac24ad/FLAG7c2292b06 [2020-11-28 07:43:00,507 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_26aa13ad-1d23-445b-954f-a6e71396392f/bin/utaipan/data/9d2c4eff3/9ef64a2c3ef54d5db93a155c8dac24ad [2020-11-28 07:43:00,509 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 07:43:00,513 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 07:43:00,515 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 07:43:00,515 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 07:43:00,519 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 07:43:00,520 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:43:00" (1/1) ... [2020-11-28 07:43:00,530 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4505559c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:43:00, skipping insertion in model container [2020-11-28 07:43:00,530 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:43:00" (1/1) ... [2020-11-28 07:43:00,539 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 07:43:00,598 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 07:43:00,805 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:43:00,819 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 07:43:00,878 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:43:00,922 INFO L208 MainTranslator]: Completed translation [2020-11-28 07:43:00,928 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:43:00 WrapperNode [2020-11-28 07:43:00,928 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 07:43:00,929 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 07:43:00,930 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 07:43:00,930 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 07:43:00,938 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:43:00" (1/1) ... [2020-11-28 07:43:00,952 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:43:00" (1/1) ... [2020-11-28 07:43:00,981 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 07:43:00,981 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 07:43:00,982 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 07:43:00,982 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 07:43:00,991 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:43:00" (1/1) ... [2020-11-28 07:43:00,991 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:43:00" (1/1) ... [2020-11-28 07:43:00,998 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:43:00" (1/1) ... [2020-11-28 07:43:01,012 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:43:00" (1/1) ... [2020-11-28 07:43:01,024 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:43:00" (1/1) ... [2020-11-28 07:43:01,042 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:43:00" (1/1) ... [2020-11-28 07:43:01,045 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:43:00" (1/1) ... [2020-11-28 07:43:01,054 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 07:43:01,060 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 07:43:01,061 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 07:43:01,061 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 07:43:01,068 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:43:00" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_26aa13ad-1d23-445b-954f-a6e71396392f/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 07:43:01,154 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2020-11-28 07:43:01,155 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2020-11-28 07:43:01,157 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-11-28 07:43:01,157 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 07:43:01,158 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-11-28 07:43:01,158 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 07:43:01,158 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 07:43:01,158 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2020-11-28 07:43:01,158 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-28 07:43:04,932 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 07:43:04,932 INFO L298 CfgBuilder]: Removed 20 assume(true) statements. [2020-11-28 07:43:04,933 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:43:04 BoogieIcfgContainer [2020-11-28 07:43:04,934 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 07:43:04,935 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 07:43:04,935 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 07:43:04,938 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 07:43:04,939 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 07:43:00" (1/3) ... [2020-11-28 07:43:04,939 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@83ae105 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:43:04, skipping insertion in model container [2020-11-28 07:43:04,940 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:43:00" (2/3) ... [2020-11-28 07:43:04,940 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@83ae105 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:43:04, skipping insertion in model container [2020-11-28 07:43:04,940 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:43:04" (3/3) ... [2020-11-28 07:43:04,942 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_0730b.c [2020-11-28 07:43:04,952 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 07:43:04,957 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-28 07:43:04,969 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-28 07:43:05,001 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 07:43:05,001 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 07:43:05,001 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 07:43:05,001 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 07:43:05,001 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 07:43:05,001 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 07:43:05,002 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 07:43:05,002 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 07:43:05,013 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states. [2020-11-28 07:43:05,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-28 07:43:05,019 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:43:05,019 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:43:05,020 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:43:05,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:43:05,025 INFO L82 PathProgramCache]: Analyzing trace with hash 361085180, now seen corresponding path program 1 times [2020-11-28 07:43:05,037 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-28 07:43:05,037 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [667471283] [2020-11-28 07:43:05,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_26aa13ad-1d23-445b-954f-a6e71396392f/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 07:43:05,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:43:05,554 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 1 conjunts are in the unsatisfiable core [2020-11-28 07:43:05,558 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:43:05,573 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 07:43:05,573 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:43:05,576 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 07:43:05,577 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [667471283] [2020-11-28 07:43:05,578 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:43:05,578 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-11-28 07:43:05,579 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380306318] [2020-11-28 07:43:05,583 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-28 07:43:05,583 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-28 07:43:05,596 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-28 07:43:05,597 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-28 07:43:05,599 INFO L87 Difference]: Start difference. First operand 54 states. Second operand 2 states. [2020-11-28 07:43:05,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:43:05,620 INFO L93 Difference]: Finished difference Result 105 states and 167 transitions. [2020-11-28 07:43:05,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-28 07:43:05,621 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-11-28 07:43:05,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:43:05,631 INFO L225 Difference]: With dead ends: 105 [2020-11-28 07:43:05,631 INFO L226 Difference]: Without dead ends: 50 [2020-11-28 07:43:05,634 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 14 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 07:43:05,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-11-28 07:43:05,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2020-11-28 07:43:05,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-11-28 07:43:05,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 70 transitions. [2020-11-28 07:43:05,670 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 70 transitions. Word has length 8 [2020-11-28 07:43:05,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:43:05,670 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 70 transitions. [2020-11-28 07:43:05,670 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-28 07:43:05,671 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 70 transitions. [2020-11-28 07:43:05,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-28 07:43:05,671 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:43:05,671 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:43:05,892 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-11-28 07:43:05,893 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:43:05,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:43:05,894 INFO L82 PathProgramCache]: Analyzing trace with hash 331839487, now seen corresponding path program 1 times [2020-11-28 07:43:05,894 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-28 07:43:05,895 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1919684828] [2020-11-28 07:43:05,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_26aa13ad-1d23-445b-954f-a6e71396392f/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 07:43:06,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:43:06,351 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-28 07:43:06,353 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:43:06,426 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 07:43:06,426 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:43:06,494 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 07:43:06,494 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1919684828] [2020-11-28 07:43:06,494 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:43:06,495 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2020-11-28 07:43:06,495 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762008578] [2020-11-28 07:43:06,496 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-28 07:43:06,496 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-28 07:43:06,497 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-28 07:43:06,497 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-28 07:43:06,498 INFO L87 Difference]: Start difference. First operand 50 states and 70 transitions. Second operand 6 states. [2020-11-28 07:43:07,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:43:07,426 INFO L93 Difference]: Finished difference Result 59 states and 79 transitions. [2020-11-28 07:43:07,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 07:43:07,764 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 9 [2020-11-28 07:43:07,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:43:07,764 INFO L225 Difference]: With dead ends: 59 [2020-11-28 07:43:07,765 INFO L226 Difference]: Without dead ends: 17 [2020-11-28 07:43:07,766 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-11-28 07:43:07,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2020-11-28 07:43:07,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2020-11-28 07:43:07,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2020-11-28 07:43:07,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2020-11-28 07:43:07,770 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 9 [2020-11-28 07:43:07,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:43:07,770 INFO L481 AbstractCegarLoop]: Abstraction has 17 states and 18 transitions. [2020-11-28 07:43:07,770 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-28 07:43:07,770 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions. [2020-11-28 07:43:07,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-28 07:43:07,771 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:43:07,771 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:43:07,991 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-11-28 07:43:07,992 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:43:07,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:43:07,993 INFO L82 PathProgramCache]: Analyzing trace with hash -1929218748, now seen corresponding path program 1 times [2020-11-28 07:43:07,993 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-28 07:43:07,994 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [18714465] [2020-11-28 07:43:07,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_26aa13ad-1d23-445b-954f-a6e71396392f/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 07:43:08,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:43:08,134 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-28 07:43:08,135 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:43:08,175 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 07:43:08,175 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:43:08,216 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 07:43:08,216 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [18714465] [2020-11-28 07:43:08,216 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:43:08,217 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 7 [2020-11-28 07:43:08,217 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10416409] [2020-11-28 07:43:08,217 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-28 07:43:08,217 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-28 07:43:08,218 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-28 07:43:08,218 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-11-28 07:43:08,218 INFO L87 Difference]: Start difference. First operand 17 states and 18 transitions. Second operand 7 states. [2020-11-28 07:43:10,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:43:10,394 INFO L93 Difference]: Finished difference Result 29 states and 29 transitions. [2020-11-28 07:43:10,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-28 07:43:10,396 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 11 [2020-11-28 07:43:10,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:43:10,396 INFO L225 Difference]: With dead ends: 29 [2020-11-28 07:43:10,396 INFO L226 Difference]: Without dead ends: 26 [2020-11-28 07:43:10,397 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-11-28 07:43:10,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-11-28 07:43:10,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 19. [2020-11-28 07:43:10,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-11-28 07:43:10,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2020-11-28 07:43:10,410 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 11 [2020-11-28 07:43:10,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:43:10,411 INFO L481 AbstractCegarLoop]: Abstraction has 19 states and 20 transitions. [2020-11-28 07:43:10,411 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-28 07:43:10,411 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 20 transitions. [2020-11-28 07:43:10,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-28 07:43:10,412 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:43:10,412 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:43:10,635 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-11-28 07:43:10,635 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:43:10,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:43:10,636 INFO L82 PathProgramCache]: Analyzing trace with hash 239121058, now seen corresponding path program 1 times [2020-11-28 07:43:10,636 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-28 07:43:10,636 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [984324287] [2020-11-28 07:43:10,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_26aa13ad-1d23-445b-954f-a6e71396392f/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 07:43:11,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 07:43:11,808 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 07:43:12,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 07:43:12,886 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 07:43:13,004 INFO L173 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2020-11-28 07:43:13,008 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-28 07:43:13,208 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-11-28 07:43:13,256 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 07:43:13 BoogieIcfgContainer [2020-11-28 07:43:13,257 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 07:43:13,257 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 07:43:13,257 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 07:43:13,257 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 07:43:13,258 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:43:04" (3/4) ... [2020-11-28 07:43:13,260 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-28 07:43:13,309 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_26aa13ad-1d23-445b-954f-a6e71396392f/bin/utaipan/witness.graphml [2020-11-28 07:43:13,309 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 07:43:13,311 INFO L168 Benchmark]: Toolchain (without parser) took 12797.76 ms. Allocated memory was 75.5 MB in the beginning and 94.4 MB in the end (delta: 18.9 MB). Free memory was 42.1 MB in the beginning and 52.6 MB in the end (delta: -10.5 MB). Peak memory consumption was 9.8 MB. Max. memory is 16.1 GB. [2020-11-28 07:43:13,312 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 75.5 MB. Free memory was 58.6 MB in the beginning and 58.6 MB in the end (delta: 64.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:43:13,312 INFO L168 Benchmark]: CACSL2BoogieTranslator took 413.74 ms. Allocated memory is still 75.5 MB. Free memory was 41.9 MB in the beginning and 58.0 MB in the end (delta: -16.1 MB). Peak memory consumption was 7.0 MB. Max. memory is 16.1 GB. [2020-11-28 07:43:13,313 INFO L168 Benchmark]: Boogie Procedure Inliner took 51.38 ms. Allocated memory is still 75.5 MB. Free memory was 57.8 MB in the beginning and 55.8 MB in the end (delta: 2.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:43:13,314 INFO L168 Benchmark]: Boogie Preprocessor took 78.21 ms. Allocated memory is still 75.5 MB. Free memory was 55.8 MB in the beginning and 53.9 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 07:43:13,314 INFO L168 Benchmark]: RCFGBuilder took 3873.32 ms. Allocated memory is still 75.5 MB. Free memory was 53.9 MB in the beginning and 51.5 MB in the end (delta: 2.4 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. [2020-11-28 07:43:13,315 INFO L168 Benchmark]: TraceAbstraction took 8321.52 ms. Allocated memory was 75.5 MB in the beginning and 94.4 MB in the end (delta: 18.9 MB). Free memory was 51.2 MB in the beginning and 55.3 MB in the end (delta: -4.2 MB). Peak memory consumption was 17.8 MB. Max. memory is 16.1 GB. [2020-11-28 07:43:13,315 INFO L168 Benchmark]: Witness Printer took 52.34 ms. Allocated memory is still 94.4 MB. Free memory was 55.3 MB in the beginning and 52.6 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 07:43:13,318 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 75.5 MB. Free memory was 58.6 MB in the beginning and 58.6 MB in the end (delta: 64.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 413.74 ms. Allocated memory is still 75.5 MB. Free memory was 41.9 MB in the beginning and 58.0 MB in the end (delta: -16.1 MB). Peak memory consumption was 7.0 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 51.38 ms. Allocated memory is still 75.5 MB. Free memory was 57.8 MB in the beginning and 55.8 MB in the end (delta: 2.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 78.21 ms. Allocated memory is still 75.5 MB. Free memory was 55.8 MB in the beginning and 53.9 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 3873.32 ms. Allocated memory is still 75.5 MB. Free memory was 53.9 MB in the beginning and 51.5 MB in the end (delta: 2.4 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. * TraceAbstraction took 8321.52 ms. Allocated memory was 75.5 MB in the beginning and 94.4 MB in the end (delta: 18.9 MB). Free memory was 51.2 MB in the beginning and 55.3 MB in the end (delta: -4.2 MB). Peak memory consumption was 17.8 MB. Max. memory is 16.1 GB. * Witness Printer took 52.34 ms. Allocated memory is still 94.4 MB. Free memory was 55.3 MB in the beginning and 52.6 MB in the end (delta: 2.8 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: [L19] static const double one_sqrt = 1.0, tiny_sqrt = 1.0e-300; VAL [one_sqrt=1.0, tiny_sqrt=0.0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000010] [L151] double x = -0.0; [L22] double z; [L23] __int32_t sign = 0x80000000; [L24] __uint32_t r, t1, s1, ix1, q1; [L25] __int32_t ix0, s0, q, m, t, i; VAL [one_sqrt=1.0, tiny_sqrt=0.0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000010] [L28] ieee_double_shape_type ew_u; [L29] ew_u.value = (x) [L30] EXPR ew_u.parts.msw [L30] (ix0) = ew_u.parts.msw [L31] EXPR ew_u.parts.lsw [L31] (ix1) = ew_u.parts.lsw [L34] COND FALSE !((ix0 & 0x7ff00000) == 0x7ff00000) VAL [one_sqrt=1.0, tiny_sqrt=0.0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000010] [L38] COND TRUE ix0 <= 0 VAL [one_sqrt=1.0, tiny_sqrt=0.0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000010] [L39] COND FALSE !(((ix0 & (~sign)) | ix1) == 0) VAL [one_sqrt=1.0, tiny_sqrt=0.0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000010] [L41] COND TRUE ix0 < 0 [L42] return (x - x) / (x - x); VAL [one_sqrt=1.0, tiny_sqrt=0.0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000010] [L152] double res = __ieee754_sqrt(x); [L155] EXPR res == -0.0 && __signbit_double(res) == 1 VAL [one_sqrt=1.0, tiny_sqrt=0.0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000010] [L155] COND TRUE !(res == -0.0 && __signbit_double(res) == 1) [L3] __assert_fail("0", "double_req_bl_0730b.c", 3, "reach_error") VAL [one_sqrt=1.0, tiny_sqrt=0.0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000010] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 54 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 8.2s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 3.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 100 SDtfs, 103 SDslu, 24 SDs, 0 SdLazy, 25 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 54 GetRequests, 40 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=54occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 7 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 1.9s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 40 NumberOfCodeBlocks, 40 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 50 ConstructedInterpolants, 3 QuantifiedInterpolants, 1306 SizeOfPredicates, 10 NumberOfNonLiveVariables, 136 ConjunctsInSsa, 15 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...