./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 cad46833 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_eccacb33-0fc7-476e-beef-3666401522a2/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_eccacb33-0fc7-476e-beef-3666401522a2/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_eccacb33-0fc7-476e-beef-3666401522a2/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_eccacb33-0fc7-476e-beef-3666401522a2/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-benchs/cast_union_tight.c -s /tmp/vcloud-vcloud-master/worker/working_dir_eccacb33-0fc7-476e-beef-3666401522a2/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_eccacb33-0fc7-476e-beef-3666401522a2/bin/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 6c0005e6146056cc1de3f3f086fde77a54c02f63 .................................................................................................................................................................................................................................................. Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_eccacb33-0fc7-476e-beef-3666401522a2/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_eccacb33-0fc7-476e-beef-3666401522a2/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_eccacb33-0fc7-476e-beef-3666401522a2/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_eccacb33-0fc7-476e-beef-3666401522a2/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-benchs/cast_union_tight.c -s /tmp/vcloud-vcloud-master/worker/working_dir_eccacb33-0fc7-476e-beef-3666401522a2/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_eccacb33-0fc7-476e-beef-3666401522a2/bin/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 6c0005e6146056cc1de3f3f086fde77a54c02f63 ................................................................................................................................................................................................................................................... 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 0.1.24-cad4683 [2019-10-22 11:21:05,533 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-22 11:21:05,534 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-22 11:21:05,545 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-22 11:21:05,546 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-22 11:21:05,547 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-22 11:21:05,548 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-22 11:21:05,550 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-22 11:21:05,553 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-22 11:21:05,554 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-22 11:21:05,556 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-22 11:21:05,556 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-22 11:21:05,557 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-22 11:21:05,557 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-22 11:21:05,558 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-22 11:21:05,559 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-22 11:21:05,560 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-22 11:21:05,560 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-22 11:21:05,561 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-22 11:21:05,562 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-22 11:21:05,564 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-22 11:21:05,564 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-22 11:21:05,565 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-22 11:21:05,566 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-22 11:21:05,567 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-22 11:21:05,568 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-22 11:21:05,568 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-22 11:21:05,569 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-22 11:21:05,569 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-22 11:21:05,570 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-22 11:21:05,570 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-22 11:21:05,570 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-22 11:21:05,571 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-22 11:21:05,572 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-22 11:21:05,572 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-22 11:21:05,573 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-22 11:21:05,573 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-22 11:21:05,573 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-22 11:21:05,573 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-22 11:21:05,574 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-22 11:21:05,575 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-22 11:21:05,575 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_eccacb33-0fc7-476e-beef-3666401522a2/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2019-10-22 11:21:05,585 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-22 11:21:05,586 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-22 11:21:05,586 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-10-22 11:21:05,587 INFO L138 SettingsManager]: * User list type=DISABLED [2019-10-22 11:21:05,587 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-10-22 11:21:05,587 INFO L138 SettingsManager]: * Explicit value domain=true [2019-10-22 11:21:05,587 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-10-22 11:21:05,587 INFO L138 SettingsManager]: * Octagon Domain=false [2019-10-22 11:21:05,587 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-10-22 11:21:05,588 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-10-22 11:21:05,588 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-10-22 11:21:05,588 INFO L138 SettingsManager]: * Interval Domain=false [2019-10-22 11:21:05,588 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-22 11:21:05,589 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-22 11:21:05,589 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-22 11:21:05,589 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-22 11:21:05,589 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-22 11:21:05,589 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-22 11:21:05,589 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-22 11:21:05,589 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-22 11:21:05,590 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-22 11:21:05,590 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-22 11:21:05,590 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-22 11:21:05,590 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-22 11:21:05,590 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-22 11:21:05,590 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-22 11:21:05,591 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-22 11:21:05,591 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-22 11:21:05,591 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-22 11:21:05,591 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-22 11:21:05,592 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-22 11:21:05,592 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-10-22 11:21:05,592 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-22 11:21:05,592 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-22 11:21:05,592 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-22 11:21:05,592 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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/working_dir_eccacb33-0fc7-476e-beef-3666401522a2/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(__VERIFIER_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 -> 6c0005e6146056cc1de3f3f086fde77a54c02f63 [2019-10-22 11:21:05,623 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-22 11:21:05,635 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-22 11:21:05,638 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-22 11:21:05,641 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-22 11:21:05,641 INFO L275 PluginConnector]: CDTParser initialized [2019-10-22 11:21:05,642 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_eccacb33-0fc7-476e-beef-3666401522a2/bin/utaipan/../../sv-benchmarks/c/float-benchs/cast_union_tight.c [2019-10-22 11:21:05,690 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_eccacb33-0fc7-476e-beef-3666401522a2/bin/utaipan/data/3243e7610/5363e72e604c4acca9a0686d132cab7a/FLAG6a17ebc24 [2019-10-22 11:21:06,062 INFO L306 CDTParser]: Found 1 translation units. [2019-10-22 11:21:06,062 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_eccacb33-0fc7-476e-beef-3666401522a2/sv-benchmarks/c/float-benchs/cast_union_tight.c [2019-10-22 11:21:06,070 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_eccacb33-0fc7-476e-beef-3666401522a2/bin/utaipan/data/3243e7610/5363e72e604c4acca9a0686d132cab7a/FLAG6a17ebc24 [2019-10-22 11:21:06,422 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_eccacb33-0fc7-476e-beef-3666401522a2/bin/utaipan/data/3243e7610/5363e72e604c4acca9a0686d132cab7a [2019-10-22 11:21:06,424 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-22 11:21:06,426 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-10-22 11:21:06,427 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-22 11:21:06,430 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-22 11:21:06,433 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-22 11:21:06,434 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 11:21:06" (1/1) ... [2019-10-22 11:21:06,437 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@683a5ac2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:21:06, skipping insertion in model container [2019-10-22 11:21:06,437 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 11:21:06" (1/1) ... [2019-10-22 11:21:06,444 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-22 11:21:06,461 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-22 11:21:06,644 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 11:21:06,648 INFO L188 MainTranslator]: Completed pre-run [2019-10-22 11:21:06,729 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 11:21:06,746 INFO L192 MainTranslator]: Completed translation [2019-10-22 11:21:06,746 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:21:06 WrapperNode [2019-10-22 11:21:06,747 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-22 11:21:06,747 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-10-22 11:21:06,748 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-10-22 11:21:06,748 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-10-22 11:21:06,755 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:21:06" (1/1) ... [2019-10-22 11:21:06,763 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:21:06" (1/1) ... [2019-10-22 11:21:06,780 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-10-22 11:21:06,780 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-22 11:21:06,780 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-22 11:21:06,781 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-22 11:21:06,789 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:21:06" (1/1) ... [2019-10-22 11:21:06,789 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:21:06" (1/1) ... [2019-10-22 11:21:06,791 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:21:06" (1/1) ... [2019-10-22 11:21:06,792 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:21:06" (1/1) ... [2019-10-22 11:21:06,797 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:21:06" (1/1) ... [2019-10-22 11:21:06,799 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:21:06" (1/1) ... [2019-10-22 11:21:06,800 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:21:06" (1/1) ... [2019-10-22 11:21:06,801 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-22 11:21:06,802 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-22 11:21:06,802 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-22 11:21:06,802 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-22 11:21:06,803 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:21:06" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_eccacb33-0fc7-476e-beef-3666401522a2/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 [2019-10-22 11:21:06,854 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2019-10-22 11:21:06,855 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-22 11:21:06,855 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-22 11:21:06,855 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-22 11:21:06,855 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-22 11:21:06,855 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-22 11:21:06,856 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-22 11:21:07,030 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-22 11:21:07,030 INFO L284 CfgBuilder]: Removed 8 assume(true) statements. [2019-10-22 11:21:07,031 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:21:07 BoogieIcfgContainer [2019-10-22 11:21:07,031 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-22 11:21:07,032 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-22 11:21:07,032 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-22 11:21:07,035 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-22 11:21:07,035 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 11:21:06" (1/3) ... [2019-10-22 11:21:07,036 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22a4941b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 11:21:07, skipping insertion in model container [2019-10-22 11:21:07,036 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:21:06" (2/3) ... [2019-10-22 11:21:07,036 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22a4941b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 11:21:07, skipping insertion in model container [2019-10-22 11:21:07,037 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:21:07" (3/3) ... [2019-10-22 11:21:07,038 INFO L109 eAbstractionObserver]: Analyzing ICFG cast_union_tight.c [2019-10-22 11:21:07,047 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-22 11:21:07,053 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-22 11:21:07,064 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-22 11:21:07,080 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-22 11:21:07,080 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-22 11:21:07,080 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-22 11:21:07,080 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-22 11:21:07,080 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-22 11:21:07,080 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-22 11:21:07,081 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-22 11:21:07,081 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-22 11:21:07,090 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states. [2019-10-22 11:21:07,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-10-22 11:21:07,095 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:21:07,096 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-10-22 11:21:07,098 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:21:07,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:21:07,103 INFO L82 PathProgramCache]: Analyzing trace with hash 28692803, now seen corresponding path program 1 times [2019-10-22 11:21:07,111 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:21:07,112 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1681107376] [2019-10-22 11:21:07,112 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:21:07,112 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:21:07,113 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:21:07,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 11:21:07,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 11:21:07,239 INFO L168 tionRefinementEngine]: Strategy TAIPAN found a feasible trace [2019-10-22 11:21:07,240 INFO L445 BasicCegarLoop]: Counterexample might be feasible [2019-10-22 11:21:07,258 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.10 11:21:07 BoogieIcfgContainer [2019-10-22 11:21:07,258 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-22 11:21:07,258 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-10-22 11:21:07,258 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-10-22 11:21:07,259 INFO L275 PluginConnector]: Witness Printer initialized [2019-10-22 11:21:07,259 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:21:07" (3/4) ... [2019-10-22 11:21:07,262 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-10-22 11:21:07,263 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-10-22 11:21:07,265 INFO L168 Benchmark]: Toolchain (without parser) took 838.37 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 148.9 MB). Free memory was 941.8 MB in the beginning and 1.1 GB in the end (delta: -166.0 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 11:21:07,265 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 1.0 GB. Free memory is still 960.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 11:21:07,266 INFO L168 Benchmark]: CACSL2BoogieTranslator took 319.91 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 148.9 MB). Free memory was 941.8 MB in the beginning and 1.1 GB in the end (delta: -203.2 MB). Peak memory consumption was 20.5 MB. Max. memory is 11.5 GB. [2019-10-22 11:21:07,266 INFO L168 Benchmark]: Boogie Procedure Inliner took 32.71 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 11.5 GB. [2019-10-22 11:21:07,267 INFO L168 Benchmark]: Boogie Preprocessor took 21.24 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 11.5 GB. [2019-10-22 11:21:07,268 INFO L168 Benchmark]: RCFGBuilder took 229.47 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 18.3 MB). Peak memory consumption was 18.3 MB. Max. memory is 11.5 GB. [2019-10-22 11:21:07,268 INFO L168 Benchmark]: TraceAbstraction took 226.06 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 16.2 MB). Peak memory consumption was 16.2 MB. Max. memory is 11.5 GB. [2019-10-22 11:21:07,268 INFO L168 Benchmark]: Witness Printer took 4.28 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 11:21:07,271 INFO L335 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 1.0 GB. Free memory is still 960.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 319.91 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 148.9 MB). Free memory was 941.8 MB in the beginning and 1.1 GB in the end (delta: -203.2 MB). Peak memory consumption was 20.5 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 32.71 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 21.24 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 11.5 GB. * RCFGBuilder took 229.47 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 18.3 MB). Peak memory consumption was 18.3 MB. Max. memory is 11.5 GB. * TraceAbstraction took 226.06 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 16.2 MB). Peak memory consumption was 16.2 MB. Max. memory is 11.5 GB. * Witness Printer took 4.28 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 7]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 32, overapproximation of someBinaryArithmeticDOUBLEoperation at line 21, overapproximation of bitwiseXor at line 20. Possible FailurePath: [L26] int a; [L27] double r; [L29] a = __VERIFIER_nondet_int() [L16] union u x, y; [L17] x.i[0] = 0x43300000 [L18] EXPR x.i[0] [L18] y.i[0] = x.i[0] [L19] x.i[1] = 0x80000000 [L20] EXPR x.i[1] [L20] y.i[1] = i ^ x.i[1] [L21] EXPR y.d [L21] EXPR x.d [L21] return y.d - x.d; [L21] return y.d - x.d; [L21] return y.d - x.d; [L31] r = cast(a) [L7] COND TRUE !(cond) [L7] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 10 locations, 1 error locations. Result: UNSAFE, OverallTime: 0.1s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=10occurred 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, 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, 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 0.1.24-cad4683 [2019-10-22 11:21:09,158 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-22 11:21:09,159 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-22 11:21:09,168 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-22 11:21:09,169 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-22 11:21:09,170 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-22 11:21:09,171 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-22 11:21:09,172 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-22 11:21:09,174 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-22 11:21:09,174 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-22 11:21:09,175 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-22 11:21:09,176 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-22 11:21:09,176 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-22 11:21:09,177 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-22 11:21:09,178 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-22 11:21:09,179 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-22 11:21:09,180 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-22 11:21:09,181 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-22 11:21:09,182 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-22 11:21:09,184 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-22 11:21:09,185 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-22 11:21:09,186 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-22 11:21:09,187 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-22 11:21:09,188 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-22 11:21:09,190 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-22 11:21:09,190 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-22 11:21:09,191 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-22 11:21:09,192 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-22 11:21:09,192 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-22 11:21:09,193 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-22 11:21:09,193 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-22 11:21:09,194 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-22 11:21:09,194 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-22 11:21:09,195 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-22 11:21:09,196 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-22 11:21:09,197 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-22 11:21:09,197 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-22 11:21:09,197 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-22 11:21:09,198 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-22 11:21:09,198 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-22 11:21:09,199 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-22 11:21:09,200 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_eccacb33-0fc7-476e-beef-3666401522a2/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2019-10-22 11:21:09,213 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-22 11:21:09,213 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-22 11:21:09,214 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-10-22 11:21:09,214 INFO L138 SettingsManager]: * User list type=DISABLED [2019-10-22 11:21:09,214 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-10-22 11:21:09,214 INFO L138 SettingsManager]: * Explicit value domain=true [2019-10-22 11:21:09,214 INFO L138 SettingsManager]: * Octagon Domain=false [2019-10-22 11:21:09,215 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-10-22 11:21:09,215 INFO L138 SettingsManager]: * Interval Domain=false [2019-10-22 11:21:09,216 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-22 11:21:09,216 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-22 11:21:09,216 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-22 11:21:09,216 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-22 11:21:09,216 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-22 11:21:09,216 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-22 11:21:09,217 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-22 11:21:09,217 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-10-22 11:21:09,217 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-10-22 11:21:09,217 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-22 11:21:09,217 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-22 11:21:09,217 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-22 11:21:09,218 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-22 11:21:09,218 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-22 11:21:09,218 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-22 11:21:09,218 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-22 11:21:09,218 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-22 11:21:09,218 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-22 11:21:09,219 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-22 11:21:09,219 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-22 11:21:09,219 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-22 11:21:09,220 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2019-10-22 11:21:09,220 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-10-22 11:21:09,220 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-22 11:21:09,220 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-22 11:21:09,220 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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/working_dir_eccacb33-0fc7-476e-beef-3666401522a2/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(__VERIFIER_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 -> 6c0005e6146056cc1de3f3f086fde77a54c02f63 [2019-10-22 11:21:09,251 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-22 11:21:09,264 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-22 11:21:09,268 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-22 11:21:09,273 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-22 11:21:09,275 INFO L275 PluginConnector]: CDTParser initialized [2019-10-22 11:21:09,277 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_eccacb33-0fc7-476e-beef-3666401522a2/bin/utaipan/../../sv-benchmarks/c/float-benchs/cast_union_tight.c [2019-10-22 11:21:09,336 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_eccacb33-0fc7-476e-beef-3666401522a2/bin/utaipan/data/d9333a150/e507f528317b470a94aee57ad7b18317/FLAG5d0e4f268 [2019-10-22 11:21:09,762 INFO L306 CDTParser]: Found 1 translation units. [2019-10-22 11:21:09,763 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_eccacb33-0fc7-476e-beef-3666401522a2/sv-benchmarks/c/float-benchs/cast_union_tight.c [2019-10-22 11:21:09,770 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_eccacb33-0fc7-476e-beef-3666401522a2/bin/utaipan/data/d9333a150/e507f528317b470a94aee57ad7b18317/FLAG5d0e4f268 [2019-10-22 11:21:10,127 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_eccacb33-0fc7-476e-beef-3666401522a2/bin/utaipan/data/d9333a150/e507f528317b470a94aee57ad7b18317 [2019-10-22 11:21:10,130 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-22 11:21:10,131 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-10-22 11:21:10,133 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-22 11:21:10,133 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-22 11:21:10,137 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-22 11:21:10,137 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 11:21:10" (1/1) ... [2019-10-22 11:21:10,140 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@20813360 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:21:10, skipping insertion in model container [2019-10-22 11:21:10,141 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 11:21:10" (1/1) ... [2019-10-22 11:21:10,149 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-22 11:21:10,165 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-22 11:21:10,346 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 11:21:10,354 INFO L188 MainTranslator]: Completed pre-run [2019-10-22 11:21:10,385 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 11:21:10,412 INFO L192 MainTranslator]: Completed translation [2019-10-22 11:21:10,412 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:21:10 WrapperNode [2019-10-22 11:21:10,413 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-22 11:21:10,413 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-10-22 11:21:10,414 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-10-22 11:21:10,414 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-10-22 11:21:10,423 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:21:10" (1/1) ... [2019-10-22 11:21:10,433 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:21:10" (1/1) ... [2019-10-22 11:21:10,540 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-10-22 11:21:10,540 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-22 11:21:10,541 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-22 11:21:10,541 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-22 11:21:10,551 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:21:10" (1/1) ... [2019-10-22 11:21:10,552 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:21:10" (1/1) ... [2019-10-22 11:21:10,555 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:21:10" (1/1) ... [2019-10-22 11:21:10,556 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:21:10" (1/1) ... [2019-10-22 11:21:10,569 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:21:10" (1/1) ... [2019-10-22 11:21:10,580 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:21:10" (1/1) ... [2019-10-22 11:21:10,582 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:21:10" (1/1) ... [2019-10-22 11:21:10,585 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-22 11:21:10,587 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-22 11:21:10,587 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-22 11:21:10,587 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-22 11:21:10,589 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:21:10" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_eccacb33-0fc7-476e-beef-3666401522a2/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 [2019-10-22 11:21:10,646 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2019-10-22 11:21:10,647 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2019-10-22 11:21:10,647 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-22 11:21:10,647 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-22 11:21:10,647 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-22 11:21:10,647 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-22 11:21:10,647 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2019-10-22 11:21:10,985 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-22 11:21:10,985 INFO L284 CfgBuilder]: Removed 8 assume(true) statements. [2019-10-22 11:21:10,987 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:21:10 BoogieIcfgContainer [2019-10-22 11:21:10,988 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-22 11:21:10,989 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-22 11:21:10,989 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-22 11:21:10,992 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-22 11:21:10,992 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 11:21:10" (1/3) ... [2019-10-22 11:21:10,993 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23e66c62 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 11:21:10, skipping insertion in model container [2019-10-22 11:21:10,993 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:21:10" (2/3) ... [2019-10-22 11:21:10,994 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23e66c62 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 11:21:10, skipping insertion in model container [2019-10-22 11:21:10,994 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:21:10" (3/3) ... [2019-10-22 11:21:10,996 INFO L109 eAbstractionObserver]: Analyzing ICFG cast_union_tight.c [2019-10-22 11:21:11,004 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-22 11:21:11,011 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-22 11:21:11,021 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-22 11:21:11,045 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-22 11:21:11,045 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-22 11:21:11,046 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-22 11:21:11,046 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-22 11:21:11,046 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-22 11:21:11,046 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-22 11:21:11,046 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-22 11:21:11,046 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-22 11:21:11,061 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states. [2019-10-22 11:21:11,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-10-22 11:21:11,067 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:21:11,068 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-10-22 11:21:11,070 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:21:11,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:21:11,076 INFO L82 PathProgramCache]: Analyzing trace with hash 28692803, now seen corresponding path program 1 times [2019-10-22 11:21:11,087 INFO L157 tionRefinementEngine]: Executing refinement strategy WALRUS [2019-10-22 11:21:11,088 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [795496345] [2019-10-22 11:21:11,088 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_eccacb33-0fc7-476e-beef-3666401522a2/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 [2019-10-22 11:21:11,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 11:21:11,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 11:21:11,533 INFO L168 tionRefinementEngine]: Strategy WALRUS found a feasible trace [2019-10-22 11:21:11,534 INFO L445 BasicCegarLoop]: Counterexample might be feasible [2019-10-22 11:21:11,735 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2019-10-22 11:21:11,761 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.10 11:21:11 BoogieIcfgContainer [2019-10-22 11:21:11,761 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-22 11:21:11,761 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-10-22 11:21:11,762 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-10-22 11:21:11,762 INFO L275 PluginConnector]: Witness Printer initialized [2019-10-22 11:21:11,762 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:21:10" (3/4) ... [2019-10-22 11:21:11,765 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-10-22 11:21:11,812 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_eccacb33-0fc7-476e-beef-3666401522a2/bin/utaipan/witness.graphml [2019-10-22 11:21:11,813 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-10-22 11:21:11,815 INFO L168 Benchmark]: Toolchain (without parser) took 1682.72 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 138.4 MB). Free memory was 946.9 MB in the beginning and 1.1 GB in the end (delta: -141.2 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 11:21:11,815 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 1.0 GB. Free memory is still 977.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 11:21:11,816 INFO L168 Benchmark]: CACSL2BoogieTranslator took 280.52 ms. Allocated memory is still 1.0 GB. Free memory was 946.9 MB in the beginning and 936.2 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-10-22 11:21:11,816 INFO L168 Benchmark]: Boogie Procedure Inliner took 126.74 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 138.4 MB). Free memory was 936.2 MB in the beginning and 1.1 GB in the end (delta: -190.7 MB). Peak memory consumption was 18.2 MB. Max. memory is 11.5 GB. [2019-10-22 11:21:11,823 INFO L168 Benchmark]: Boogie Preprocessor took 44.41 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 11:21:11,824 INFO L168 Benchmark]: RCFGBuilder took 400.57 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 19.6 MB). Peak memory consumption was 19.6 MB. Max. memory is 11.5 GB. [2019-10-22 11:21:11,824 INFO L168 Benchmark]: TraceAbstraction took 772.12 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 19.1 MB). Peak memory consumption was 19.1 MB. Max. memory is 11.5 GB. [2019-10-22 11:21:11,824 INFO L168 Benchmark]: Witness Printer took 51.39 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 11:21:11,827 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 1.0 GB. Free memory is still 977.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 280.52 ms. Allocated memory is still 1.0 GB. Free memory was 946.9 MB in the beginning and 936.2 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 126.74 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 138.4 MB). Free memory was 936.2 MB in the beginning and 1.1 GB in the end (delta: -190.7 MB). Peak memory consumption was 18.2 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 44.41 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 400.57 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 19.6 MB). Peak memory consumption was 19.6 MB. Max. memory is 11.5 GB. * TraceAbstraction took 772.12 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 19.1 MB). Peak memory consumption was 19.1 MB. Max. memory is 11.5 GB. * Witness Printer took 51.39 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 7]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L26] int a; [L27] double r; [L29] a = __VERIFIER_nondet_int() [L16] union u x, y; [L17] x.i[0] = 0x43300000 [L18] EXPR x.i[0] [L18] y.i[0] = x.i[0] [L19] x.i[1] = 0x80000000 [L20] EXPR x.i[1] [L20] y.i[1] = i ^ x.i[1] [L21] EXPR y.d [L21] EXPR x.d [L21] return y.d - x.d; [L21] return y.d - x.d; [L21] return y.d - x.d; [L31] r = cast(a) [L7] COND TRUE !(cond) [L7] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 10 locations, 1 error locations. Result: UNSAFE, OverallTime: 0.7s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=10occurred 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, 0.1s 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, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...