./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/double_req_bl_1072a.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f470102c Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_98cf04b1-ab5b-4096-a349-77d7d664ec4e/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_98cf04b1-ab5b-4096-a349-77d7d664ec4e/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_98cf04b1-ab5b-4096-a349-77d7d664ec4e/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_98cf04b1-ab5b-4096-a349-77d7d664ec4e/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1072a.c -s /tmp/vcloud-vcloud-master/worker/run_dir_98cf04b1-ab5b-4096-a349-77d7d664ec4e/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_98cf04b1-ab5b-4096-a349-77d7d664ec4e/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 6677b5df0de82d6f15e79744b3d0d69c2e6d1112 ........................................................................................................................................................................................................................................................................................................ 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/run_dir_98cf04b1-ab5b-4096-a349-77d7d664ec4e/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_98cf04b1-ab5b-4096-a349-77d7d664ec4e/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_98cf04b1-ab5b-4096-a349-77d7d664ec4e/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_98cf04b1-ab5b-4096-a349-77d7d664ec4e/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1072a.c -s /tmp/vcloud-vcloud-master/worker/run_dir_98cf04b1-ab5b-4096-a349-77d7d664ec4e/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_98cf04b1-ab5b-4096-a349-77d7d664ec4e/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 6677b5df0de82d6f15e79744b3d0d69c2e6d1112 ................................................................................................................................................................................................................................................................................................................ 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 0.1.25-f470102 [2019-12-07 14:53:47,129 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 14:53:47,131 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 14:53:47,139 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 14:53:47,140 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 14:53:47,141 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 14:53:47,142 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 14:53:47,144 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 14:53:47,145 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 14:53:47,146 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 14:53:47,147 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 14:53:47,148 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 14:53:47,148 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 14:53:47,149 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 14:53:47,149 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 14:53:47,150 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 14:53:47,151 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 14:53:47,151 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 14:53:47,152 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 14:53:47,154 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 14:53:47,155 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 14:53:47,156 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 14:53:47,157 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 14:53:47,157 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 14:53:47,159 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 14:53:47,159 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 14:53:47,160 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 14:53:47,160 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 14:53:47,160 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 14:53:47,161 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 14:53:47,161 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 14:53:47,161 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 14:53:47,162 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 14:53:47,163 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 14:53:47,163 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 14:53:47,164 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 14:53:47,164 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 14:53:47,164 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 14:53:47,164 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 14:53:47,165 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 14:53:47,166 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 14:53:47,166 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_98cf04b1-ab5b-4096-a349-77d7d664ec4e/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2019-12-07 14:53:47,179 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 14:53:47,179 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 14:53:47,180 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-12-07 14:53:47,180 INFO L138 SettingsManager]: * User list type=DISABLED [2019-12-07 14:53:47,181 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-12-07 14:53:47,181 INFO L138 SettingsManager]: * Explicit value domain=true [2019-12-07 14:53:47,181 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-12-07 14:53:47,181 INFO L138 SettingsManager]: * Octagon Domain=false [2019-12-07 14:53:47,181 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-12-07 14:53:47,181 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-12-07 14:53:47,182 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-12-07 14:53:47,182 INFO L138 SettingsManager]: * Interval Domain=false [2019-12-07 14:53:47,182 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-12-07 14:53:47,182 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-12-07 14:53:47,182 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-12-07 14:53:47,183 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 14:53:47,183 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-07 14:53:47,183 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-07 14:53:47,184 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-07 14:53:47,184 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 14:53:47,184 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-07 14:53:47,184 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-07 14:53:47,184 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-07 14:53:47,184 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-12-07 14:53:47,185 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-07 14:53:47,185 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 14:53:47,185 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 14:53:47,185 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-07 14:53:47,185 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 14:53:47,186 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-07 14:53:47,186 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-07 14:53:47,186 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 14:53:47,186 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 14:53:47,186 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-07 14:53:47,186 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-07 14:53:47,187 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-12-07 14:53:47,187 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-07 14:53:47,187 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-07 14:53:47,187 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 14:53:47,187 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-12-07 14:53:47,187 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/run_dir_98cf04b1-ab5b-4096-a349-77d7d664ec4e/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 -> 6677b5df0de82d6f15e79744b3d0d69c2e6d1112 [2019-12-07 14:53:47,285 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 14:53:47,293 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 14:53:47,296 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 14:53:47,297 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 14:53:47,297 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 14:53:47,297 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_98cf04b1-ab5b-4096-a349-77d7d664ec4e/bin/utaipan/../../sv-benchmarks/c/float-newlib/double_req_bl_1072a.c [2019-12-07 14:53:47,334 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_98cf04b1-ab5b-4096-a349-77d7d664ec4e/bin/utaipan/data/3fd13ccaa/fedae60687dc4ba8839a1c144fdc0b97/FLAG74b2fd422 [2019-12-07 14:53:47,661 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 14:53:47,662 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_98cf04b1-ab5b-4096-a349-77d7d664ec4e/sv-benchmarks/c/float-newlib/double_req_bl_1072a.c [2019-12-07 14:53:47,666 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_98cf04b1-ab5b-4096-a349-77d7d664ec4e/bin/utaipan/data/3fd13ccaa/fedae60687dc4ba8839a1c144fdc0b97/FLAG74b2fd422 [2019-12-07 14:53:47,675 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_98cf04b1-ab5b-4096-a349-77d7d664ec4e/bin/utaipan/data/3fd13ccaa/fedae60687dc4ba8839a1c144fdc0b97 [2019-12-07 14:53:47,677 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 14:53:47,678 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 14:53:47,678 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 14:53:47,678 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 14:53:47,681 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 14:53:47,681 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 02:53:47" (1/1) ... [2019-12-07 14:53:47,684 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3dcd8b83 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:53:47, skipping insertion in model container [2019-12-07 14:53:47,684 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 02:53:47" (1/1) ... [2019-12-07 14:53:47,690 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 14:53:47,705 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 14:53:47,854 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 14:53:47,857 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 14:53:47,877 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 14:53:47,891 INFO L208 MainTranslator]: Completed translation [2019-12-07 14:53:47,891 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:53:47 WrapperNode [2019-12-07 14:53:47,891 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 14:53:47,892 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 14:53:47,892 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 14:53:47,892 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 14:53:47,897 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:53:47" (1/1) ... [2019-12-07 14:53:47,904 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:53:47" (1/1) ... [2019-12-07 14:53:47,921 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 14:53:47,922 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 14:53:47,922 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 14:53:47,922 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 14:53:47,928 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:53:47" (1/1) ... [2019-12-07 14:53:47,928 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:53:47" (1/1) ... [2019-12-07 14:53:47,930 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:53:47" (1/1) ... [2019-12-07 14:53:47,931 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:53:47" (1/1) ... [2019-12-07 14:53:47,937 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:53:47" (1/1) ... [2019-12-07 14:53:47,940 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:53:47" (1/1) ... [2019-12-07 14:53:47,942 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:53:47" (1/1) ... [2019-12-07 14:53:47,944 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 14:53:47,944 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 14:53:47,944 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 14:53:47,944 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 14:53:47,945 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:53:47" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_98cf04b1-ab5b-4096-a349-77d7d664ec4e/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 [2019-12-07 14:53:47,986 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-12-07 14:53:47,986 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2019-12-07 14:53:47,986 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-12-07 14:53:47,986 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2019-12-07 14:53:47,986 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 14:53:47,986 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 14:53:47,986 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-12-07 14:53:47,987 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-12-07 14:53:48,237 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 14:53:48,237 INFO L287 CfgBuilder]: Removed 18 assume(true) statements. [2019-12-07 14:53:48,238 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 02:53:48 BoogieIcfgContainer [2019-12-07 14:53:48,238 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 14:53:48,239 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-07 14:53:48,239 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-07 14:53:48,241 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-07 14:53:48,242 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 02:53:47" (1/3) ... [2019-12-07 14:53:48,242 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78f6e402 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 02:53:48, skipping insertion in model container [2019-12-07 14:53:48,242 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:53:47" (2/3) ... [2019-12-07 14:53:48,243 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78f6e402 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 02:53:48, skipping insertion in model container [2019-12-07 14:53:48,243 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 02:53:48" (3/3) ... [2019-12-07 14:53:48,244 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1072a.c [2019-12-07 14:53:48,250 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-07 14:53:48,255 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-12-07 14:53:48,262 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-12-07 14:53:48,278 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-07 14:53:48,278 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-07 14:53:48,278 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-07 14:53:48,278 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 14:53:48,278 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 14:53:48,278 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-07 14:53:48,278 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 14:53:48,278 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-07 14:53:48,287 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2019-12-07 14:53:48,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-12-07 14:53:48,292 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 14:53:48,292 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 14:53:48,293 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 14:53:48,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:53:48,296 INFO L82 PathProgramCache]: Analyzing trace with hash 1270339564, now seen corresponding path program 1 times [2019-12-07 14:53:48,302 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 14:53:48,302 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [187489928] [2019-12-07 14:53:48,302 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 14:53:48,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:53:48,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 14:53:48,382 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [187489928] [2019-12-07 14:53:48,382 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 14:53:48,382 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-07 14:53:48,383 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945998825] [2019-12-07 14:53:48,386 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-12-07 14:53:48,386 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 14:53:48,395 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-12-07 14:53:48,395 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-12-07 14:53:48,397 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 2 states. [2019-12-07 14:53:48,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 14:53:48,409 INFO L93 Difference]: Finished difference Result 47 states and 75 transitions. [2019-12-07 14:53:48,410 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-12-07 14:53:48,411 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2019-12-07 14:53:48,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 14:53:48,418 INFO L225 Difference]: With dead ends: 47 [2019-12-07 14:53:48,418 INFO L226 Difference]: Without dead ends: 22 [2019-12-07 14:53:48,420 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-12-07 14:53:48,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2019-12-07 14:53:48,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2019-12-07 14:53:48,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2019-12-07 14:53:48,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 25 transitions. [2019-12-07 14:53:48,444 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 25 transitions. Word has length 11 [2019-12-07 14:53:48,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 14:53:48,444 INFO L462 AbstractCegarLoop]: Abstraction has 22 states and 25 transitions. [2019-12-07 14:53:48,444 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-12-07 14:53:48,444 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 25 transitions. [2019-12-07 14:53:48,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-12-07 14:53:48,444 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 14:53:48,445 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 14:53:48,445 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 14:53:48,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:53:48,445 INFO L82 PathProgramCache]: Analyzing trace with hash -1216840604, now seen corresponding path program 1 times [2019-12-07 14:53:48,445 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 14:53:48,445 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921930470] [2019-12-07 14:53:48,445 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 14:53:48,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 14:53:48,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 14:53:48,567 INFO L174 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2019-12-07 14:53:48,567 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-12-07 14:53:48,586 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 02:53:48 BoogieIcfgContainer [2019-12-07 14:53:48,586 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-07 14:53:48,586 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 14:53:48,586 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 14:53:48,586 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 14:53:48,587 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 02:53:48" (3/4) ... [2019-12-07 14:53:48,589 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-12-07 14:53:48,589 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 14:53:48,591 INFO L168 Benchmark]: Toolchain (without parser) took 912.70 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 101.7 MB). Free memory was 938.8 MB in the beginning and 1.0 GB in the end (delta: -90.7 MB). Peak memory consumption was 11.0 MB. Max. memory is 11.5 GB. [2019-12-07 14:53:48,591 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 1.0 GB. Free memory is still 955.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 14:53:48,592 INFO L168 Benchmark]: CACSL2BoogieTranslator took 213.21 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 101.7 MB). Free memory was 938.8 MB in the beginning and 1.1 GB in the end (delta: -156.6 MB). Peak memory consumption was 23.2 MB. Max. memory is 11.5 GB. [2019-12-07 14:53:48,592 INFO L168 Benchmark]: Boogie Procedure Inliner took 29.89 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2019-12-07 14:53:48,592 INFO L168 Benchmark]: Boogie Preprocessor took 22.12 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 14:53:48,593 INFO L168 Benchmark]: RCFGBuilder took 294.44 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 27.2 MB). Peak memory consumption was 27.2 MB. Max. memory is 11.5 GB. [2019-12-07 14:53:48,593 INFO L168 Benchmark]: TraceAbstraction took 346.55 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 33.3 MB). Peak memory consumption was 33.3 MB. Max. memory is 11.5 GB. [2019-12-07 14:53:48,594 INFO L168 Benchmark]: Witness Printer took 3.20 ms. Allocated memory is still 1.1 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 14:53:48,596 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 1.0 GB. Free memory is still 955.0 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 213.21 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 101.7 MB). Free memory was 938.8 MB in the beginning and 1.1 GB in the end (delta: -156.6 MB). Peak memory consumption was 23.2 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 29.89 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 22.12 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 294.44 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 27.2 MB). Peak memory consumption was 27.2 MB. Max. memory is 11.5 GB. * TraceAbstraction took 346.55 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 33.3 MB). Peak memory consumption was 33.3 MB. Max. memory is 11.5 GB. * Witness Printer took 3.20 ms. Allocated memory is still 1.1 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 89]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of bitwiseOr at line 72, overapproximation of someBinaryArithmeticDOUBLEoperation at line 49, overapproximation of bitwiseAnd at line 71. Possible FailurePath: [L84] double x = 1.0 / 0.0; [L18] int signbit; [L19] int msw; [L20] unsigned int lsw; [L21] int exponent_less_1023; [L23] ieee_double_shape_type ew_u; [L24] ew_u.value = (x) [L25] EXPR ew_u.parts.msw [L25] (msw) = ew_u.parts.msw [L26] EXPR ew_u.parts.lsw [L26] (lsw) = ew_u.parts.lsw [L28] signbit = msw & 0x80000000 [L29] exponent_less_1023 = ((msw & 0x7ff00000) >> 20) - 1023 [L30] COND FALSE !(exponent_less_1023 < 20) [L47] COND TRUE exponent_less_1023 > 51 [L48] COND TRUE exponent_less_1023 == 1024 [L49] return x + x; [L85] double res = trunc_double(x); [L64] __int32_t hx, lx; [L66] ieee_double_shape_type ew_u; [L67] ew_u.value = (x) [L68] EXPR ew_u.parts.msw [L68] (hx) = ew_u.parts.msw [L69] EXPR ew_u.parts.lsw [L69] (lx) = ew_u.parts.lsw [L71] hx &= 0x7fffffff [L72] hx |= (__uint32_t)(lx | (-lx)) >> 31 [L73] hx = 0x7ff00000 - hx [L74] return 1 - (int)((__uint32_t)(hx | (-hx)) >> 31); [L88] COND TRUE !isinf_double(res) [L89] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 24 locations, 1 error locations. Result: UNSAFE, OverallTime: 0.2s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 27 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=24occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 24 NumberOfCodeBlocks, 24 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 10 ConstructedInterpolants, 0 QuantifiedInterpolants, 100 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, 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 0.1.25-f470102 [2019-12-07 14:53:49,954 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 14:53:49,956 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 14:53:49,965 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 14:53:49,965 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 14:53:49,966 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 14:53:49,967 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 14:53:49,969 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 14:53:49,970 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 14:53:49,971 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 14:53:49,972 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 14:53:49,973 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 14:53:49,973 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 14:53:49,974 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 14:53:49,975 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 14:53:49,976 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 14:53:49,977 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 14:53:49,978 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 14:53:49,979 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 14:53:49,981 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 14:53:49,983 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 14:53:49,984 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 14:53:49,985 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 14:53:49,986 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 14:53:49,988 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 14:53:49,988 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 14:53:49,989 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 14:53:49,989 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 14:53:49,990 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 14:53:49,990 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 14:53:49,991 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 14:53:49,991 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 14:53:49,992 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 14:53:49,992 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 14:53:49,993 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 14:53:49,993 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 14:53:49,994 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 14:53:49,994 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 14:53:49,994 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 14:53:49,995 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 14:53:49,996 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 14:53:49,996 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_98cf04b1-ab5b-4096-a349-77d7d664ec4e/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2019-12-07 14:53:50,009 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 14:53:50,009 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 14:53:50,010 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-12-07 14:53:50,010 INFO L138 SettingsManager]: * User list type=DISABLED [2019-12-07 14:53:50,010 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-12-07 14:53:50,010 INFO L138 SettingsManager]: * Explicit value domain=true [2019-12-07 14:53:50,010 INFO L138 SettingsManager]: * Octagon Domain=false [2019-12-07 14:53:50,010 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-12-07 14:53:50,011 INFO L138 SettingsManager]: * Interval Domain=false [2019-12-07 14:53:50,011 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 14:53:50,011 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-07 14:53:50,011 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-07 14:53:50,012 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 14:53:50,012 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-07 14:53:50,012 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-07 14:53:50,012 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-07 14:53:50,012 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-12-07 14:53:50,012 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-12-07 14:53:50,012 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-12-07 14:53:50,013 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-07 14:53:50,013 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 14:53:50,013 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 14:53:50,013 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-07 14:53:50,013 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 14:53:50,013 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-07 14:53:50,013 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-07 14:53:50,014 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-07 14:53:50,014 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 14:53:50,014 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 14:53:50,014 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-07 14:53:50,014 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-07 14:53:50,014 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2019-12-07 14:53:50,014 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-12-07 14:53:50,014 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-07 14:53:50,015 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 14:53:50,015 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-12-07 14:53:50,015 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/run_dir_98cf04b1-ab5b-4096-a349-77d7d664ec4e/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 -> 6677b5df0de82d6f15e79744b3d0d69c2e6d1112 [2019-12-07 14:53:50,189 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 14:53:50,199 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 14:53:50,202 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 14:53:50,203 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 14:53:50,204 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 14:53:50,204 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_98cf04b1-ab5b-4096-a349-77d7d664ec4e/bin/utaipan/../../sv-benchmarks/c/float-newlib/double_req_bl_1072a.c [2019-12-07 14:53:50,248 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_98cf04b1-ab5b-4096-a349-77d7d664ec4e/bin/utaipan/data/16720b778/04130ebb403041338c645df3787a2044/FLAG1066bfc91 [2019-12-07 14:53:50,681 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 14:53:50,681 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_98cf04b1-ab5b-4096-a349-77d7d664ec4e/sv-benchmarks/c/float-newlib/double_req_bl_1072a.c [2019-12-07 14:53:50,685 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_98cf04b1-ab5b-4096-a349-77d7d664ec4e/bin/utaipan/data/16720b778/04130ebb403041338c645df3787a2044/FLAG1066bfc91 [2019-12-07 14:53:50,694 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_98cf04b1-ab5b-4096-a349-77d7d664ec4e/bin/utaipan/data/16720b778/04130ebb403041338c645df3787a2044 [2019-12-07 14:53:50,696 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 14:53:50,697 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 14:53:50,697 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 14:53:50,698 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 14:53:50,700 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 14:53:50,700 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 02:53:50" (1/1) ... [2019-12-07 14:53:50,702 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@357db60c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:53:50, skipping insertion in model container [2019-12-07 14:53:50,702 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 02:53:50" (1/1) ... [2019-12-07 14:53:50,707 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 14:53:50,719 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 14:53:50,829 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 14:53:50,833 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 14:53:50,855 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 14:53:50,873 INFO L208 MainTranslator]: Completed translation [2019-12-07 14:53:50,873 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:53:50 WrapperNode [2019-12-07 14:53:50,873 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 14:53:50,874 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 14:53:50,874 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 14:53:50,874 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 14:53:50,909 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:53:50" (1/1) ... [2019-12-07 14:53:50,918 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:53:50" (1/1) ... [2019-12-07 14:53:50,939 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 14:53:50,939 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 14:53:50,939 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 14:53:50,939 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 14:53:50,946 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:53:50" (1/1) ... [2019-12-07 14:53:50,946 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:53:50" (1/1) ... [2019-12-07 14:53:50,950 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:53:50" (1/1) ... [2019-12-07 14:53:50,951 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:53:50" (1/1) ... [2019-12-07 14:53:50,958 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:53:50" (1/1) ... [2019-12-07 14:53:50,961 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:53:50" (1/1) ... [2019-12-07 14:53:50,963 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:53:50" (1/1) ... [2019-12-07 14:53:50,966 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 14:53:50,966 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 14:53:50,966 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 14:53:50,966 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 14:53:50,967 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:53:50" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_98cf04b1-ab5b-4096-a349-77d7d664ec4e/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 [2019-12-07 14:53:51,005 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2019-12-07 14:53:51,005 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2019-12-07 14:53:51,005 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-12-07 14:53:51,005 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2019-12-07 14:53:51,005 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 14:53:51,005 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 14:53:51,005 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2019-12-07 14:53:51,005 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-12-07 14:53:51,287 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 14:53:51,287 INFO L287 CfgBuilder]: Removed 18 assume(true) statements. [2019-12-07 14:53:51,288 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 02:53:51 BoogieIcfgContainer [2019-12-07 14:53:51,288 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 14:53:51,289 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-07 14:53:51,289 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-07 14:53:51,290 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-07 14:53:51,291 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 02:53:50" (1/3) ... [2019-12-07 14:53:51,291 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60fce0ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 02:53:51, skipping insertion in model container [2019-12-07 14:53:51,291 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:53:50" (2/3) ... [2019-12-07 14:53:51,291 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60fce0ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 02:53:51, skipping insertion in model container [2019-12-07 14:53:51,292 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 02:53:51" (3/3) ... [2019-12-07 14:53:51,293 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1072a.c [2019-12-07 14:53:51,299 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-07 14:53:51,303 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-12-07 14:53:51,310 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-12-07 14:53:51,325 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-07 14:53:51,325 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-07 14:53:51,325 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-07 14:53:51,325 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 14:53:51,325 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 14:53:51,325 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-07 14:53:51,325 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 14:53:51,326 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-07 14:53:51,334 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states. [2019-12-07 14:53:51,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-12-07 14:53:51,338 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 14:53:51,339 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 14:53:51,339 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 14:53:51,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:53:51,343 INFO L82 PathProgramCache]: Analyzing trace with hash 748040733, now seen corresponding path program 1 times [2019-12-07 14:53:51,350 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-12-07 14:53:51,350 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [270640543] [2019-12-07 14:53:51,350 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_98cf04b1-ab5b-4096-a349-77d7d664ec4e/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 [2019-12-07 14:53:51,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:53:51,447 INFO L264 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 1 conjunts are in the unsatisfiable core [2019-12-07 14:53:51,450 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 14:53:51,460 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 14:53:51,460 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 14:53:51,463 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 14:53:51,463 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [270640543] [2019-12-07 14:53:51,464 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-12-07 14:53:51,464 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2019-12-07 14:53:51,464 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903877242] [2019-12-07 14:53:51,467 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-12-07 14:53:51,467 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-12-07 14:53:51,476 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-12-07 14:53:51,476 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-12-07 14:53:51,477 INFO L87 Difference]: Start difference. First operand 27 states. Second operand 2 states. [2019-12-07 14:53:51,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 14:53:51,490 INFO L93 Difference]: Finished difference Result 52 states and 80 transitions. [2019-12-07 14:53:51,490 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-12-07 14:53:51,491 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 13 [2019-12-07 14:53:51,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 14:53:51,497 INFO L225 Difference]: With dead ends: 52 [2019-12-07 14:53:51,498 INFO L226 Difference]: Without dead ends: 24 [2019-12-07 14:53:51,500 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-12-07 14:53:51,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2019-12-07 14:53:51,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2019-12-07 14:53:51,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2019-12-07 14:53:51,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 27 transitions. [2019-12-07 14:53:51,522 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 27 transitions. Word has length 13 [2019-12-07 14:53:51,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 14:53:51,523 INFO L462 AbstractCegarLoop]: Abstraction has 24 states and 27 transitions. [2019-12-07 14:53:51,523 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-12-07 14:53:51,523 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 27 transitions. [2019-12-07 14:53:51,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-12-07 14:53:51,523 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 14:53:51,523 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 14:53:51,724 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2019-12-07 14:53:51,725 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 14:53:51,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:53:51,726 INFO L82 PathProgramCache]: Analyzing trace with hash 1214246053, now seen corresponding path program 1 times [2019-12-07 14:53:51,729 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-12-07 14:53:51,730 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1357171456] [2019-12-07 14:53:51,730 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_98cf04b1-ab5b-4096-a349-77d7d664ec4e/bin/utaipan/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2019-12-07 14:53:51,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 14:53:52,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 14:53:52,068 INFO L174 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2019-12-07 14:53:52,068 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-12-07 14:53:52,269 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2019-12-07 14:53:52,304 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 02:53:52 BoogieIcfgContainer [2019-12-07 14:53:52,304 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-07 14:53:52,305 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 14:53:52,305 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 14:53:52,305 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 14:53:52,305 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 02:53:51" (3/4) ... [2019-12-07 14:53:52,307 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-12-07 14:53:52,341 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_98cf04b1-ab5b-4096-a349-77d7d664ec4e/bin/utaipan/witness.graphml [2019-12-07 14:53:52,341 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 14:53:52,343 INFO L168 Benchmark]: Toolchain (without parser) took 1645.55 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 132.6 MB). Free memory was 952.4 MB in the beginning and 1.0 GB in the end (delta: -77.6 MB). Peak memory consumption was 55.0 MB. Max. memory is 11.5 GB. [2019-12-07 14:53:52,343 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 981.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 14:53:52,343 INFO L168 Benchmark]: CACSL2BoogieTranslator took 176.23 ms. Allocated memory is still 1.0 GB. Free memory was 952.4 MB in the beginning and 934.9 MB in the end (delta: 17.4 MB). Peak memory consumption was 17.4 MB. Max. memory is 11.5 GB. [2019-12-07 14:53:52,344 INFO L168 Benchmark]: Boogie Procedure Inliner took 65.12 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 132.6 MB). Free memory was 934.9 MB in the beginning and 1.1 GB in the end (delta: -186.7 MB). Peak memory consumption was 10.2 MB. Max. memory is 11.5 GB. [2019-12-07 14:53:52,344 INFO L168 Benchmark]: Boogie Preprocessor took 26.46 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. [2019-12-07 14:53:52,344 INFO L168 Benchmark]: RCFGBuilder took 322.13 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: 31.9 MB). Peak memory consumption was 31.9 MB. Max. memory is 11.5 GB. [2019-12-07 14:53:52,345 INFO L168 Benchmark]: TraceAbstraction took 1015.86 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 52.9 MB). Peak memory consumption was 52.9 MB. Max. memory is 11.5 GB. [2019-12-07 14:53:52,345 INFO L168 Benchmark]: Witness Printer took 36.82 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. [2019-12-07 14:53:52,347 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 981.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 176.23 ms. Allocated memory is still 1.0 GB. Free memory was 952.4 MB in the beginning and 934.9 MB in the end (delta: 17.4 MB). Peak memory consumption was 17.4 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 65.12 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 132.6 MB). Free memory was 934.9 MB in the beginning and 1.1 GB in the end (delta: -186.7 MB). Peak memory consumption was 10.2 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 26.46 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 322.13 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: 31.9 MB). Peak memory consumption was 31.9 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1015.86 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 52.9 MB). Peak memory consumption was 52.9 MB. Max. memory is 11.5 GB. * Witness Printer took 36.82 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 89]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L84] double x = 1.0 / 0.0; [L18] int signbit; [L19] int msw; [L20] unsigned int lsw; [L21] int exponent_less_1023; [L23] ieee_double_shape_type ew_u; [L24] ew_u.value = (x) [L25] EXPR ew_u.parts.msw [L25] (msw) = ew_u.parts.msw [L26] EXPR ew_u.parts.lsw [L26] (lsw) = ew_u.parts.lsw [L28] signbit = msw & 0x80000000 [L29] exponent_less_1023 = ((msw & 0x7ff00000) >> 20) - 1023 [L30] COND FALSE !(exponent_less_1023 < 20) [L47] COND TRUE exponent_less_1023 > 51 [L48] COND TRUE exponent_less_1023 == 1024 [L49] return x + x; [L85] double res = trunc_double(x); [L64] __int32_t hx, lx; [L66] ieee_double_shape_type ew_u; [L67] ew_u.value = (x) [L68] EXPR ew_u.parts.msw [L68] (hx) = ew_u.parts.msw [L69] EXPR ew_u.parts.lsw [L69] (lx) = ew_u.parts.lsw [L71] hx &= 0x7fffffff [L72] hx |= (__uint32_t)(lx | (-lx)) >> 31 [L73] hx = 0x7ff00000 - hx [L74] return 1 - (int)((__uint32_t)(hx | (-hx)) >> 31); [L88] COND TRUE !isinf_double(res) [L89] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 27 locations, 1 error locations. Result: UNSAFE, OverallTime: 0.9s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 30 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 24 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=27occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 28 NumberOfCodeBlocks, 28 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 24 ConstructedInterpolants, 0 QuantifiedInterpolants, 288 SizeOfPredicates, 0 NumberOfNonLiveVariables, 26 ConjunctsInSsa, 1 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 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...