./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-benchs/cast_union_tight.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_9eea2e09-537f-4211-a32b-2932f9f04f5b/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_9eea2e09-537f-4211-a32b-2932f9f04f5b/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_9eea2e09-537f-4211-a32b-2932f9f04f5b/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_9eea2e09-537f-4211-a32b-2932f9f04f5b/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-benchs/cast_union_tight.c -s /tmp/vcloud-vcloud-master/worker/run_dir_9eea2e09-537f-4211-a32b-2932f9f04f5b/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_9eea2e09-537f-4211-a32b-2932f9f04f5b/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 3d31f2d0d6b0c3e8ac2e406df583c8b091e17f75 ............................................................................................................................................................................................................................................................... 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_9eea2e09-537f-4211-a32b-2932f9f04f5b/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_9eea2e09-537f-4211-a32b-2932f9f04f5b/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_9eea2e09-537f-4211-a32b-2932f9f04f5b/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_9eea2e09-537f-4211-a32b-2932f9f04f5b/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-benchs/cast_union_tight.c -s /tmp/vcloud-vcloud-master/worker/run_dir_9eea2e09-537f-4211-a32b-2932f9f04f5b/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_9eea2e09-537f-4211-a32b-2932f9f04f5b/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 3d31f2d0d6b0c3e8ac2e406df583c8b091e17f75 .............................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-22 12:56:53,933 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-22 12:56:53,937 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-22 12:56:53,992 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-22 12:56:53,993 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-22 12:56:53,997 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-22 12:56:54,000 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-22 12:56:54,011 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-22 12:56:54,014 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-22 12:56:54,019 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-22 12:56:54,020 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-22 12:56:54,022 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-22 12:56:54,023 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-22 12:56:54,026 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-22 12:56:54,028 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-22 12:56:54,031 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-22 12:56:54,032 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-22 12:56:54,036 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-22 12:56:54,040 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-22 12:56:54,050 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-22 12:56:54,052 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-22 12:56:54,053 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-22 12:56:54,056 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-22 12:56:54,057 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-22 12:56:54,065 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-22 12:56:54,066 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-22 12:56:54,066 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-22 12:56:54,068 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-22 12:56:54,069 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-22 12:56:54,070 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-22 12:56:54,071 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-22 12:56:54,072 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-22 12:56:54,074 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-22 12:56:54,075 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-22 12:56:54,079 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-22 12:56:54,079 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-22 12:56:54,079 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-22 12:56:54,080 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-22 12:56:54,080 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-22 12:56:54,081 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-22 12:56:54,081 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-22 12:56:54,084 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_9eea2e09-537f-4211-a32b-2932f9f04f5b/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-11-22 12:56:54,130 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-22 12:56:54,130 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-22 12:56:54,131 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-22 12:56:54,131 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-22 12:56:54,132 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-22 12:56:54,132 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-22 12:56:54,132 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-22 12:56:54,132 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-22 12:56:54,132 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-22 12:56:54,133 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-22 12:56:54,133 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-22 12:56:54,133 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-22 12:56:54,133 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-22 12:56:54,133 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-22 12:56:54,134 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-22 12:56:54,138 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-22 12:56:54,139 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-22 12:56:54,139 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-22 12:56:54,139 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-22 12:56:54,139 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-22 12:56:54,139 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-22 12:56:54,139 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-22 12:56:54,140 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-22 12:56:54,140 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-22 12:56:54,140 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-22 12:56:54,140 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-22 12:56:54,141 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-22 12:56:54,141 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-22 12:56:54,142 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-22 12:56:54,142 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-22 12:56:54,142 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-22 12:56:54,142 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-22 12:56:54,143 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-22 12:56:54,143 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-22 12:56:54,143 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-22 12:56:54,143 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-22 12:56:54,144 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-22 12:56:54,144 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-22 12:56:54,145 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-22 12:56:54,145 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-22 12:56:54,145 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_9eea2e09-537f-4211-a32b-2932f9f04f5b/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_9eea2e09-537f-4211-a32b-2932f9f04f5b/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3d31f2d0d6b0c3e8ac2e406df583c8b091e17f75 [2020-11-22 12:56:54,450 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-22 12:56:54,480 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-22 12:56:54,484 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-22 12:56:54,485 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-22 12:56:54,486 INFO L275 PluginConnector]: CDTParser initialized [2020-11-22 12:56:54,487 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_9eea2e09-537f-4211-a32b-2932f9f04f5b/bin/utaipan/../../sv-benchmarks/c/float-benchs/cast_union_tight.c [2020-11-22 12:56:54,581 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_9eea2e09-537f-4211-a32b-2932f9f04f5b/bin/utaipan/data/e945d803f/94bfe353cacf45d5b1796dc7c49a1170/FLAG3d2f49626 [2020-11-22 12:56:55,023 INFO L306 CDTParser]: Found 1 translation units. [2020-11-22 12:56:55,024 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_9eea2e09-537f-4211-a32b-2932f9f04f5b/sv-benchmarks/c/float-benchs/cast_union_tight.c [2020-11-22 12:56:55,034 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_9eea2e09-537f-4211-a32b-2932f9f04f5b/bin/utaipan/data/e945d803f/94bfe353cacf45d5b1796dc7c49a1170/FLAG3d2f49626 [2020-11-22 12:56:55,393 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_9eea2e09-537f-4211-a32b-2932f9f04f5b/bin/utaipan/data/e945d803f/94bfe353cacf45d5b1796dc7c49a1170 [2020-11-22 12:56:55,396 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-22 12:56:55,397 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-22 12:56:55,399 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-22 12:56:55,399 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-22 12:56:55,403 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-22 12:56:55,404 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 12:56:55" (1/1) ... [2020-11-22 12:56:55,406 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f12988 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:56:55, skipping insertion in model container [2020-11-22 12:56:55,406 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 12:56:55" (1/1) ... [2020-11-22 12:56:55,414 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-22 12:56:55,427 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-22 12:56:55,626 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 12:56:55,634 INFO L203 MainTranslator]: Completed pre-run [2020-11-22 12:56:55,660 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 12:56:55,679 INFO L208 MainTranslator]: Completed translation [2020-11-22 12:56:55,681 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:56:55 WrapperNode [2020-11-22 12:56:55,681 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-22 12:56:55,682 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-22 12:56:55,682 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-22 12:56:55,683 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-22 12:56:55,691 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:56:55" (1/1) ... [2020-11-22 12:56:55,698 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:56:55" (1/1) ... [2020-11-22 12:56:55,713 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-22 12:56:55,714 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-22 12:56:55,714 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-22 12:56:55,714 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-22 12:56:55,721 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:56:55" (1/1) ... [2020-11-22 12:56:55,721 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:56:55" (1/1) ... [2020-11-22 12:56:55,723 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:56:55" (1/1) ... [2020-11-22 12:56:55,724 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:56:55" (1/1) ... [2020-11-22 12:56:55,730 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:56:55" (1/1) ... [2020-11-22 12:56:55,732 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:56:55" (1/1) ... [2020-11-22 12:56:55,733 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:56:55" (1/1) ... [2020-11-22 12:56:55,735 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-22 12:56:55,738 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-22 12:56:55,738 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-22 12:56:55,738 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-22 12:56:55,739 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:56:55" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9eea2e09-537f-4211-a32b-2932f9f04f5b/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-22 12:56:55,819 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-22 12:56:55,820 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-22 12:56:55,820 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-11-22 12:56:55,820 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-22 12:56:55,821 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-22 12:56:55,821 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-22 12:56:55,821 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-22 12:56:55,821 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-22 12:56:56,299 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-22 12:56:56,299 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-11-22 12:56:56,306 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:56:56 BoogieIcfgContainer [2020-11-22 12:56:56,306 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-22 12:56:56,307 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-22 12:56:56,307 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-22 12:56:56,311 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-22 12:56:56,311 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 12:56:55" (1/3) ... [2020-11-22 12:56:56,312 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a383a22 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 12:56:56, skipping insertion in model container [2020-11-22 12:56:56,312 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:56:55" (2/3) ... [2020-11-22 12:56:56,312 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a383a22 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 12:56:56, skipping insertion in model container [2020-11-22 12:56:56,312 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:56:56" (3/3) ... [2020-11-22 12:56:56,314 INFO L111 eAbstractionObserver]: Analyzing ICFG cast_union_tight.c [2020-11-22 12:56:56,333 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-22 12:56:56,339 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-22 12:56:56,355 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-22 12:56:56,383 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-22 12:56:56,383 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-22 12:56:56,383 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-22 12:56:56,383 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-22 12:56:56,383 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-22 12:56:56,384 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-22 12:56:56,384 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-22 12:56:56,384 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-22 12:56:56,398 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states. [2020-11-22 12:56:56,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-11-22 12:56:56,403 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:56:56,404 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-11-22 12:56:56,404 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:56:56,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:56:56,411 INFO L82 PathProgramCache]: Analyzing trace with hash 51159, now seen corresponding path program 1 times [2020-11-22 12:56:56,421 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:56:56,422 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675741884] [2020-11-22 12:56:56,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:56:56,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-22 12:56:56,591 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-22 12:56:56,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-22 12:56:56,624 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-22 12:56:56,645 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2020-11-22 12:56:56,646 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-22 12:56:56,647 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-22 12:56:56,667 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 12:56:56 BoogieIcfgContainer [2020-11-22 12:56:56,668 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-22 12:56:56,668 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-22 12:56:56,669 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-22 12:56:56,669 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-22 12:56:56,669 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:56:56" (3/4) ... [2020-11-22 12:56:56,673 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-22 12:56:56,673 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-22 12:56:56,675 INFO L168 Benchmark]: Toolchain (without parser) took 1276.59 ms. Allocated memory is still 92.3 MB. Free memory was 61.7 MB in the beginning and 32.4 MB in the end (delta: 29.3 MB). Peak memory consumption was 26.5 MB. Max. memory is 16.1 GB. [2020-11-22 12:56:56,676 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 75.5 MB. Free memory was 37.6 MB in the beginning and 37.5 MB in the end (delta: 36.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 12:56:56,677 INFO L168 Benchmark]: CACSL2BoogieTranslator took 282.17 ms. Allocated memory is still 92.3 MB. Free memory was 61.5 MB in the beginning and 69.2 MB in the end (delta: -7.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-22 12:56:56,678 INFO L168 Benchmark]: Boogie Procedure Inliner took 30.81 ms. Allocated memory is still 92.3 MB. Free memory was 69.2 MB in the beginning and 67.6 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-22 12:56:56,680 INFO L168 Benchmark]: Boogie Preprocessor took 21.93 ms. Allocated memory is still 92.3 MB. Free memory was 67.6 MB in the beginning and 66.5 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-22 12:56:56,681 INFO L168 Benchmark]: RCFGBuilder took 567.94 ms. Allocated memory is still 92.3 MB. Free memory was 66.5 MB in the beginning and 46.7 MB in the end (delta: 19.8 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. [2020-11-22 12:56:56,683 INFO L168 Benchmark]: TraceAbstraction took 360.51 ms. Allocated memory is still 92.3 MB. Free memory was 46.2 MB in the beginning and 32.9 MB in the end (delta: 13.3 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2020-11-22 12:56:56,684 INFO L168 Benchmark]: Witness Printer took 4.62 ms. Allocated memory is still 92.3 MB. Free memory was 32.9 MB in the beginning and 32.4 MB in the end (delta: 453.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 12:56:56,688 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 75.5 MB. Free memory was 37.6 MB in the beginning and 37.5 MB in the end (delta: 36.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 282.17 ms. Allocated memory is still 92.3 MB. Free memory was 61.5 MB in the beginning and 69.2 MB in the end (delta: -7.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 30.81 ms. Allocated memory is still 92.3 MB. Free memory was 69.2 MB in the beginning and 67.6 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 21.93 ms. Allocated memory is still 92.3 MB. Free memory was 67.6 MB in the beginning and 66.5 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 567.94 ms. Allocated memory is still 92.3 MB. Free memory was 66.5 MB in the beginning and 46.7 MB in the end (delta: 19.8 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 360.51 ms. Allocated memory is still 92.3 MB. Free memory was 46.2 MB in the beginning and 32.9 MB in the end (delta: 13.3 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Witness Printer took 4.62 ms. Allocated memory is still 92.3 MB. Free memory was 32.9 MB in the beginning and 32.4 MB in the end (delta: 453.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 3]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryArithmeticDOUBLEoperation at line 23, overapproximation of someBinaryDOUBLEComparisonOperation at line 34, overapproximation of bitwiseXor at line 22. Possible FailurePath: [L28] int a; [L29] double r; [L31] a = __VERIFIER_nondet_int() [L18] union u x, y; [L19] x.i[0] = 0x43300000 [L20] EXPR x.i[0] [L20] y.i[0] = x.i[0] [L21] x.i[1] = 0x80000000 [L22] EXPR x.i[1] [L22] y.i[1] = i ^ x.i[1] [L23] EXPR y.d [L23] EXPR x.d [L23] return y.d - x.d; [L23] return y.d - x.d; [L23] return y.d - x.d; [L33] r = cast(a) [L9] COND TRUE !(cond) [L3] __assert_fail("0", "cast_union_tight.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 6 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.2s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=6occurred 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: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 3 NumberOfCodeBlocks, 3 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.0-a4ecdab [2020-11-22 12:56:59,138 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-22 12:56:59,141 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-22 12:56:59,196 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-22 12:56:59,197 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-22 12:56:59,202 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-22 12:56:59,204 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-22 12:56:59,208 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-22 12:56:59,212 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-22 12:56:59,217 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-22 12:56:59,219 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-22 12:56:59,223 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-22 12:56:59,224 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-22 12:56:59,229 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-22 12:56:59,231 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-22 12:56:59,233 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-22 12:56:59,234 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-22 12:56:59,237 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-22 12:56:59,240 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-22 12:56:59,248 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-22 12:56:59,250 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-22 12:56:59,252 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-22 12:56:59,259 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-22 12:56:59,261 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-22 12:56:59,268 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-22 12:56:59,271 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-22 12:56:59,271 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-22 12:56:59,273 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-22 12:56:59,274 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-22 12:56:59,275 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-22 12:56:59,276 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-22 12:56:59,277 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-22 12:56:59,279 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-22 12:56:59,279 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-22 12:56:59,280 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-22 12:56:59,280 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-22 12:56:59,281 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-22 12:56:59,282 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-22 12:56:59,282 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-22 12:56:59,284 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-22 12:56:59,284 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-22 12:56:59,285 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_9eea2e09-537f-4211-a32b-2932f9f04f5b/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2020-11-22 12:56:59,326 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-22 12:56:59,327 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-22 12:56:59,329 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-22 12:56:59,329 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-22 12:56:59,329 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-22 12:56:59,329 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-22 12:56:59,330 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-22 12:56:59,330 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-22 12:56:59,330 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-22 12:56:59,332 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-22 12:56:59,333 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-22 12:56:59,333 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-22 12:56:59,333 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-22 12:56:59,333 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-22 12:56:59,334 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-22 12:56:59,334 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-22 12:56:59,334 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-22 12:56:59,334 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-11-22 12:56:59,335 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-11-22 12:56:59,335 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-22 12:56:59,335 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-22 12:56:59,335 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-22 12:56:59,335 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-22 12:56:59,336 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-22 12:56:59,336 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-22 12:56:59,336 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-22 12:56:59,336 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-22 12:56:59,337 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-22 12:56:59,337 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-22 12:56:59,347 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-22 12:56:59,347 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-22 12:56:59,348 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2020-11-22 12:56:59,348 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-11-22 12:56:59,348 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-22 12:56:59,348 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-22 12:56:59,349 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-22 12:56:59,349 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_9eea2e09-537f-4211-a32b-2932f9f04f5b/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_9eea2e09-537f-4211-a32b-2932f9f04f5b/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3d31f2d0d6b0c3e8ac2e406df583c8b091e17f75 [2020-11-22 12:56:59,728 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-22 12:56:59,748 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-22 12:56:59,751 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-22 12:56:59,752 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-22 12:56:59,755 INFO L275 PluginConnector]: CDTParser initialized [2020-11-22 12:56:59,756 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_9eea2e09-537f-4211-a32b-2932f9f04f5b/bin/utaipan/../../sv-benchmarks/c/float-benchs/cast_union_tight.c [2020-11-22 12:56:59,827 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_9eea2e09-537f-4211-a32b-2932f9f04f5b/bin/utaipan/data/f2e8cf0e4/ffadfeb7791f48eaa3fcb2af8b1bd4f6/FLAGec64760e2 [2020-11-22 12:57:00,291 INFO L306 CDTParser]: Found 1 translation units. [2020-11-22 12:57:00,292 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_9eea2e09-537f-4211-a32b-2932f9f04f5b/sv-benchmarks/c/float-benchs/cast_union_tight.c [2020-11-22 12:57:00,298 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_9eea2e09-537f-4211-a32b-2932f9f04f5b/bin/utaipan/data/f2e8cf0e4/ffadfeb7791f48eaa3fcb2af8b1bd4f6/FLAGec64760e2 [2020-11-22 12:57:00,689 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_9eea2e09-537f-4211-a32b-2932f9f04f5b/bin/utaipan/data/f2e8cf0e4/ffadfeb7791f48eaa3fcb2af8b1bd4f6 [2020-11-22 12:57:00,692 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-22 12:57:00,695 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-22 12:57:00,699 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-22 12:57:00,699 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-22 12:57:00,703 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-22 12:57:00,704 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 12:57:00" (1/1) ... [2020-11-22 12:57:00,709 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f6ffff6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:57:00, skipping insertion in model container [2020-11-22 12:57:00,713 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 12:57:00" (1/1) ... [2020-11-22 12:57:00,720 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-22 12:57:00,735 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-22 12:57:00,887 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 12:57:00,899 INFO L203 MainTranslator]: Completed pre-run [2020-11-22 12:57:00,920 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 12:57:00,943 INFO L208 MainTranslator]: Completed translation [2020-11-22 12:57:00,945 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:57:00 WrapperNode [2020-11-22 12:57:00,946 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-22 12:57:00,948 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-22 12:57:00,948 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-22 12:57:00,949 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-22 12:57:00,967 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:57:00" (1/1) ... [2020-11-22 12:57:01,006 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:57:00" (1/1) ... [2020-11-22 12:57:01,035 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-22 12:57:01,036 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-22 12:57:01,036 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-22 12:57:01,037 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-22 12:57:01,044 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:57:00" (1/1) ... [2020-11-22 12:57:01,045 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:57:00" (1/1) ... [2020-11-22 12:57:01,055 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:57:00" (1/1) ... [2020-11-22 12:57:01,055 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:57:00" (1/1) ... [2020-11-22 12:57:01,076 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:57:00" (1/1) ... [2020-11-22 12:57:01,078 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:57:00" (1/1) ... [2020-11-22 12:57:01,083 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:57:00" (1/1) ... [2020-11-22 12:57:01,090 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-22 12:57:01,093 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-22 12:57:01,094 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-22 12:57:01,095 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-22 12:57:01,096 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:57:00" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9eea2e09-537f-4211-a32b-2932f9f04f5b/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-22 12:57:01,164 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2020-11-22 12:57:01,164 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-11-22 12:57:01,166 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-22 12:57:01,167 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-11-22 12:57:01,167 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-22 12:57:01,167 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-22 12:57:01,168 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-22 12:57:01,168 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2020-11-22 12:57:01,777 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-22 12:57:01,777 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-11-22 12:57:01,779 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:57:01 BoogieIcfgContainer [2020-11-22 12:57:01,780 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-22 12:57:01,781 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-22 12:57:01,782 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-22 12:57:01,785 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-22 12:57:01,786 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 12:57:00" (1/3) ... [2020-11-22 12:57:01,787 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64be25d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 12:57:01, skipping insertion in model container [2020-11-22 12:57:01,787 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:57:00" (2/3) ... [2020-11-22 12:57:01,787 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64be25d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 12:57:01, skipping insertion in model container [2020-11-22 12:57:01,788 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:57:01" (3/3) ... [2020-11-22 12:57:01,789 INFO L111 eAbstractionObserver]: Analyzing ICFG cast_union_tight.c [2020-11-22 12:57:01,811 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-22 12:57:01,815 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-22 12:57:01,827 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-22 12:57:01,864 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-22 12:57:01,864 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-22 12:57:01,864 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-22 12:57:01,865 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-22 12:57:01,865 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-22 12:57:01,865 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-22 12:57:01,865 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-22 12:57:01,865 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-22 12:57:01,877 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states. [2020-11-22 12:57:01,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-11-22 12:57:01,883 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:57:01,884 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-11-22 12:57:01,884 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:57:01,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:57:01,891 INFO L82 PathProgramCache]: Analyzing trace with hash 28692803, now seen corresponding path program 1 times [2020-11-22 12:57:01,902 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-22 12:57:01,903 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1682551532] [2020-11-22 12:57:01,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9eea2e09-537f-4211-a32b-2932f9f04f5b/bin/utaipan/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2020-11-22 12:57:02,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-22 12:57:02,248 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-22 12:57:02,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-22 12:57:02,465 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-22 12:57:02,504 INFO L173 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2020-11-22 12:57:02,505 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-22 12:57:02,706 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-11-22 12:57:02,727 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 12:57:02 BoogieIcfgContainer [2020-11-22 12:57:02,727 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-22 12:57:02,728 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-22 12:57:02,728 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-22 12:57:02,728 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-22 12:57:02,729 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:57:01" (3/4) ... [2020-11-22 12:57:02,730 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-22 12:57:02,777 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_9eea2e09-537f-4211-a32b-2932f9f04f5b/bin/utaipan/witness.graphml [2020-11-22 12:57:02,777 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-22 12:57:02,780 INFO L168 Benchmark]: Toolchain (without parser) took 2083.57 ms. Allocated memory was 58.7 MB in the beginning and 71.3 MB in the end (delta: 12.6 MB). Free memory was 37.4 MB in the beginning and 52.9 MB in the end (delta: -15.5 MB). Peak memory consumption was 15.2 MB. Max. memory is 16.1 GB. [2020-11-22 12:57:02,781 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 58.7 MB. Free memory was 40.6 MB in the beginning and 40.5 MB in the end (delta: 42.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 12:57:02,782 INFO L168 Benchmark]: CACSL2BoogieTranslator took 247.56 ms. Allocated memory is still 58.7 MB. Free memory was 37.1 MB in the beginning and 26.8 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-22 12:57:02,783 INFO L168 Benchmark]: Boogie Procedure Inliner took 87.61 ms. Allocated memory is still 58.7 MB. Free memory was 26.8 MB in the beginning and 41.4 MB in the end (delta: -14.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-22 12:57:02,783 INFO L168 Benchmark]: Boogie Preprocessor took 55.79 ms. Allocated memory is still 58.7 MB. Free memory was 41.4 MB in the beginning and 40.2 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 12:57:02,784 INFO L168 Benchmark]: RCFGBuilder took 687.00 ms. Allocated memory is still 58.7 MB. Free memory was 40.2 MB in the beginning and 27.2 MB in the end (delta: 13.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-11-22 12:57:02,785 INFO L168 Benchmark]: TraceAbstraction took 946.13 ms. Allocated memory is still 58.7 MB. Free memory was 26.7 MB in the beginning and 25.8 MB in the end (delta: 967.1 kB). Peak memory consumption was 3.2 MB. Max. memory is 16.1 GB. [2020-11-22 12:57:02,786 INFO L168 Benchmark]: Witness Printer took 49.73 ms. Allocated memory was 58.7 MB in the beginning and 71.3 MB in the end (delta: 12.6 MB). Free memory was 25.5 MB in the beginning and 52.9 MB in the end (delta: -27.3 MB). Peak memory consumption was 4.5 MB. Max. memory is 16.1 GB. [2020-11-22 12:57:02,792 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 58.7 MB. Free memory was 40.6 MB in the beginning and 40.5 MB in the end (delta: 42.7 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 247.56 ms. Allocated memory is still 58.7 MB. Free memory was 37.1 MB in the beginning and 26.8 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 87.61 ms. Allocated memory is still 58.7 MB. Free memory was 26.8 MB in the beginning and 41.4 MB in the end (delta: -14.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 55.79 ms. Allocated memory is still 58.7 MB. Free memory was 41.4 MB in the beginning and 40.2 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 687.00 ms. Allocated memory is still 58.7 MB. Free memory was 40.2 MB in the beginning and 27.2 MB in the end (delta: 13.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 946.13 ms. Allocated memory is still 58.7 MB. Free memory was 26.7 MB in the beginning and 25.8 MB in the end (delta: 967.1 kB). Peak memory consumption was 3.2 MB. Max. memory is 16.1 GB. * Witness Printer took 49.73 ms. Allocated memory was 58.7 MB in the beginning and 71.3 MB in the end (delta: 12.6 MB). Free memory was 25.5 MB in the beginning and 52.9 MB in the end (delta: -27.3 MB). Peak memory consumption was 4.5 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: [L28] int a; [L29] double r; [L31] a = __VERIFIER_nondet_int() [L18] union u x, y; [L19] x.i[0] = 0x43300000 [L20] EXPR x.i[0] [L20] y.i[0] = x.i[0] [L21] x.i[1] = 0x80000000 [L22] EXPR x.i[1] [L22] y.i[1] = i ^ x.i[1] [L23] EXPR y.d [L23] EXPR x.d [L23] return y.d - x.d; [L23] return y.d - x.d; [L23] return y.d - x.d; [L33] r = cast(a) [L9] COND TRUE !(cond) [L3] __assert_fail("0", "cast_union_tight.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 11 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.8s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=11occurred 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: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 5 NumberOfCodeBlocks, 5 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 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...