./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/double_req_bl_1012b.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_29df1d55-9045-45da-883e-9de0ff28f899/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_29df1d55-9045-45da-883e-9de0ff28f899/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_29df1d55-9045-45da-883e-9de0ff28f899/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_29df1d55-9045-45da-883e-9de0ff28f899/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1012b.c -s /tmp/vcloud-vcloud-master/worker/run_dir_29df1d55-9045-45da-883e-9de0ff28f899/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_29df1d55-9045-45da-883e-9de0ff28f899/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 56df0817616f6c5016a1ac832f32db0c87e1c370 ................................................................................................................................................................................................................................................................................................... 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_29df1d55-9045-45da-883e-9de0ff28f899/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_29df1d55-9045-45da-883e-9de0ff28f899/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_29df1d55-9045-45da-883e-9de0ff28f899/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_29df1d55-9045-45da-883e-9de0ff28f899/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1012b.c -s /tmp/vcloud-vcloud-master/worker/run_dir_29df1d55-9045-45da-883e-9de0ff28f899/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_29df1d55-9045-45da-883e-9de0ff28f899/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 56df0817616f6c5016a1ac832f32db0c87e1c370 ........................................................................................................................................................................................................................................................................................................... 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 20:35:46,186 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 20:35:46,188 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 20:35:46,195 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 20:35:46,196 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 20:35:46,196 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 20:35:46,197 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 20:35:46,199 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 20:35:46,200 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 20:35:46,201 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 20:35:46,202 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 20:35:46,202 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 20:35:46,203 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 20:35:46,203 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 20:35:46,204 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 20:35:46,205 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 20:35:46,205 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 20:35:46,206 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 20:35:46,207 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 20:35:46,209 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 20:35:46,210 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 20:35:46,211 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 20:35:46,211 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 20:35:46,212 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 20:35:46,213 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 20:35:46,214 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 20:35:46,214 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 20:35:46,214 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 20:35:46,214 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 20:35:46,215 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 20:35:46,215 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 20:35:46,216 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 20:35:46,216 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 20:35:46,217 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 20:35:46,218 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 20:35:46,218 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 20:35:46,219 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 20:35:46,219 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 20:35:46,219 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 20:35:46,220 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 20:35:46,220 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 20:35:46,221 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_29df1d55-9045-45da-883e-9de0ff28f899/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2019-12-07 20:35:46,233 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 20:35:46,234 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 20:35:46,234 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-12-07 20:35:46,234 INFO L138 SettingsManager]: * User list type=DISABLED [2019-12-07 20:35:46,235 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-12-07 20:35:46,235 INFO L138 SettingsManager]: * Explicit value domain=true [2019-12-07 20:35:46,235 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-12-07 20:35:46,235 INFO L138 SettingsManager]: * Octagon Domain=false [2019-12-07 20:35:46,235 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-12-07 20:35:46,235 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-12-07 20:35:46,235 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-12-07 20:35:46,236 INFO L138 SettingsManager]: * Interval Domain=false [2019-12-07 20:35:46,236 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-12-07 20:35:46,236 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-12-07 20:35:46,236 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-12-07 20:35:46,237 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 20:35:46,237 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-07 20:35:46,237 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-07 20:35:46,237 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-07 20:35:46,237 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 20:35:46,237 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-07 20:35:46,238 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-07 20:35:46,238 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-07 20:35:46,238 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-12-07 20:35:46,238 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-07 20:35:46,238 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 20:35:46,238 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 20:35:46,239 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-07 20:35:46,239 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 20:35:46,239 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-07 20:35:46,239 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-07 20:35:46,239 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 20:35:46,240 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 20:35:46,240 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-07 20:35:46,240 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-07 20:35:46,240 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-12-07 20:35:46,240 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-07 20:35:46,240 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-07 20:35:46,241 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 20:35:46,241 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-12-07 20:35:46,241 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_29df1d55-9045-45da-883e-9de0ff28f899/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 -> 56df0817616f6c5016a1ac832f32db0c87e1c370 [2019-12-07 20:35:46,347 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 20:35:46,355 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 20:35:46,357 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 20:35:46,358 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 20:35:46,358 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 20:35:46,358 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_29df1d55-9045-45da-883e-9de0ff28f899/bin/utaipan/../../sv-benchmarks/c/float-newlib/double_req_bl_1012b.c [2019-12-07 20:35:46,397 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_29df1d55-9045-45da-883e-9de0ff28f899/bin/utaipan/data/136e2747f/3a451641052c460f8df894030089c7c9/FLAGc33c33322 [2019-12-07 20:35:46,829 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 20:35:46,830 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_29df1d55-9045-45da-883e-9de0ff28f899/sv-benchmarks/c/float-newlib/double_req_bl_1012b.c [2019-12-07 20:35:46,834 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_29df1d55-9045-45da-883e-9de0ff28f899/bin/utaipan/data/136e2747f/3a451641052c460f8df894030089c7c9/FLAGc33c33322 [2019-12-07 20:35:46,843 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_29df1d55-9045-45da-883e-9de0ff28f899/bin/utaipan/data/136e2747f/3a451641052c460f8df894030089c7c9 [2019-12-07 20:35:46,845 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 20:35:46,846 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 20:35:46,847 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 20:35:46,847 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 20:35:46,849 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 20:35:46,850 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 08:35:46" (1/1) ... [2019-12-07 20:35:46,851 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f0ddae8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:35:46, skipping insertion in model container [2019-12-07 20:35:46,851 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 08:35:46" (1/1) ... [2019-12-07 20:35:46,856 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 20:35:46,868 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 20:35:47,021 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 20:35:47,025 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 20:35:47,046 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 20:35:47,060 INFO L208 MainTranslator]: Completed translation [2019-12-07 20:35:47,060 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:35:47 WrapperNode [2019-12-07 20:35:47,060 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 20:35:47,061 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 20:35:47,061 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 20:35:47,061 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 20:35:47,066 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:35:47" (1/1) ... [2019-12-07 20:35:47,072 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:35:47" (1/1) ... [2019-12-07 20:35:47,088 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 20:35:47,088 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 20:35:47,089 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 20:35:47,089 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 20:35:47,095 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:35:47" (1/1) ... [2019-12-07 20:35:47,095 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:35:47" (1/1) ... [2019-12-07 20:35:47,097 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:35:47" (1/1) ... [2019-12-07 20:35:47,097 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:35:47" (1/1) ... [2019-12-07 20:35:47,105 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:35:47" (1/1) ... [2019-12-07 20:35:47,108 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:35:47" (1/1) ... [2019-12-07 20:35:47,110 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:35:47" (1/1) ... [2019-12-07 20:35:47,112 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 20:35:47,112 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 20:35:47,112 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 20:35:47,112 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 20:35:47,113 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:35:47" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_29df1d55-9045-45da-883e-9de0ff28f899/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 20:35:47,153 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-12-07 20:35:47,153 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2019-12-07 20:35:47,153 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-12-07 20:35:47,153 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2019-12-07 20:35:47,153 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 20:35:47,154 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 20:35:47,154 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-12-07 20:35:47,154 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-12-07 20:35:47,337 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 20:35:47,337 INFO L287 CfgBuilder]: Removed 14 assume(true) statements. [2019-12-07 20:35:47,338 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 08:35:47 BoogieIcfgContainer [2019-12-07 20:35:47,338 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 20:35:47,339 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-07 20:35:47,339 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-07 20:35:47,342 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-07 20:35:47,342 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 08:35:46" (1/3) ... [2019-12-07 20:35:47,343 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fb78a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 08:35:47, skipping insertion in model container [2019-12-07 20:35:47,343 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:35:47" (2/3) ... [2019-12-07 20:35:47,343 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fb78a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 08:35:47, skipping insertion in model container [2019-12-07 20:35:47,343 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 08:35:47" (3/3) ... [2019-12-07 20:35:47,345 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1012b.c [2019-12-07 20:35:47,353 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-07 20:35:47,358 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-12-07 20:35:47,368 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-12-07 20:35:47,386 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-07 20:35:47,386 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-07 20:35:47,386 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-07 20:35:47,386 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 20:35:47,386 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 20:35:47,386 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-07 20:35:47,386 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 20:35:47,386 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-07 20:35:47,395 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states. [2019-12-07 20:35:47,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-12-07 20:35:47,399 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 20:35:47,400 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 20:35:47,400 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 20:35:47,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 20:35:47,406 INFO L82 PathProgramCache]: Analyzing trace with hash 1502671275, now seen corresponding path program 1 times [2019-12-07 20:35:47,412 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 20:35:47,412 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1320392227] [2019-12-07 20:35:47,412 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 20:35:47,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 20:35:47,487 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 20:35:47,488 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1320392227] [2019-12-07 20:35:47,488 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 20:35:47,488 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-07 20:35:47,489 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335425721] [2019-12-07 20:35:47,493 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-12-07 20:35:47,493 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 20:35:47,502 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-12-07 20:35:47,503 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-12-07 20:35:47,504 INFO L87 Difference]: Start difference. First operand 14 states. Second operand 2 states. [2019-12-07 20:35:47,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 20:35:47,515 INFO L93 Difference]: Finished difference Result 27 states and 39 transitions. [2019-12-07 20:35:47,515 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-12-07 20:35:47,516 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2019-12-07 20:35:47,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 20:35:47,522 INFO L225 Difference]: With dead ends: 27 [2019-12-07 20:35:47,522 INFO L226 Difference]: Without dead ends: 12 [2019-12-07 20:35:47,524 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 20:35:47,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2019-12-07 20:35:47,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2019-12-07 20:35:47,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2019-12-07 20:35:47,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 11 transitions. [2019-12-07 20:35:47,546 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 11 transitions. Word has length 8 [2019-12-07 20:35:47,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 20:35:47,546 INFO L462 AbstractCegarLoop]: Abstraction has 12 states and 11 transitions. [2019-12-07 20:35:47,546 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-12-07 20:35:47,546 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 11 transitions. [2019-12-07 20:35:47,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-12-07 20:35:47,547 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 20:35:47,547 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 20:35:47,547 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 20:35:47,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 20:35:47,547 INFO L82 PathProgramCache]: Analyzing trace with hash -1836140037, now seen corresponding path program 1 times [2019-12-07 20:35:47,547 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 20:35:47,548 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [639057514] [2019-12-07 20:35:47,548 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 20:35:47,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 20:35:47,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 20:35:47,683 INFO L174 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2019-12-07 20:35:47,683 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-12-07 20:35:47,707 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 08:35:47 BoogieIcfgContainer [2019-12-07 20:35:47,707 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-07 20:35:47,707 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 20:35:47,708 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 20:35:47,708 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 20:35:47,708 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 08:35:47" (3/4) ... [2019-12-07 20:35:47,712 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-12-07 20:35:47,712 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 20:35:47,714 INFO L168 Benchmark]: Toolchain (without parser) took 867.11 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 94.9 MB). Free memory was 948.9 MB in the beginning and 1.0 GB in the end (delta: -85.1 MB). Peak memory consumption was 9.8 MB. Max. memory is 11.5 GB. [2019-12-07 20:35:47,714 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 1.0 GB. Free memory is still 963.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 20:35:47,715 INFO L168 Benchmark]: CACSL2BoogieTranslator took 213.93 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 94.9 MB). Free memory was 948.9 MB in the beginning and 1.1 GB in the end (delta: -140.7 MB). Peak memory consumption was 23.2 MB. Max. memory is 11.5 GB. [2019-12-07 20:35:47,715 INFO L168 Benchmark]: Boogie Procedure Inliner took 27.49 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 20:35:47,716 INFO L168 Benchmark]: Boogie Preprocessor took 23.60 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 20:35:47,717 INFO L168 Benchmark]: RCFGBuilder took 225.98 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: 22.4 MB). Peak memory consumption was 22.4 MB. Max. memory is 11.5 GB. [2019-12-07 20:35:47,717 INFO L168 Benchmark]: TraceAbstraction took 367.95 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: 27.9 MB). Peak memory consumption was 27.9 MB. Max. memory is 11.5 GB. [2019-12-07 20:35:47,718 INFO L168 Benchmark]: Witness Printer took 4.34 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 20:35:47,721 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 963.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 213.93 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 94.9 MB). Free memory was 948.9 MB in the beginning and 1.1 GB in the end (delta: -140.7 MB). Peak memory consumption was 23.2 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 27.49 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. * Boogie Preprocessor took 23.60 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. * RCFGBuilder took 225.98 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: 22.4 MB). Peak memory consumption was 22.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 367.95 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: 27.9 MB). Peak memory consumption was 27.9 MB. Max. memory is 11.5 GB. * Witness Printer took 4.34 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: 73]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of bitwiseOr at line 39, overapproximation of someBinaryArithmeticDOUBLEoperation at line 68, overapproximation of bitwiseAnd at line 38. Possible FailurePath: [L68] double x = -1.0 / 0.0; [L45] __uint32_t high; [L47] ieee_double_shape_type gh_u; [L48] gh_u.value = (x) [L49] EXPR gh_u.parts.msw [L49] (high) = gh_u.parts.msw [L52] ieee_double_shape_type sh_u; [L53] sh_u.value = (x) [L54] sh_u.parts.msw = (high & 0x7fffffff) [L55] EXPR sh_u.value [L55] (x) = sh_u.value [L57] return x; [L69] double res = fabs_double(x); [L31] __int32_t hx, lx; [L33] ieee_double_shape_type ew_u; [L34] ew_u.value = (x) [L35] EXPR ew_u.parts.msw [L35] (hx) = ew_u.parts.msw [L36] EXPR ew_u.parts.lsw [L36] (lx) = ew_u.parts.lsw [L38] hx &= 0x7fffffff [L39] hx |= (__uint32_t)(lx | (-lx)) >> 31 [L40] hx = 0x7ff00000 - hx [L41] return 1 - (int)((__uint32_t)(hx | (-hx)) >> 31); [L72] COND TRUE !isinf_double(res) [L73] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 14 locations, 1 error locations. Result: UNSAFE, OverallTime: 0.3s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 13 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=14occurred 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, 19 NumberOfCodeBlocks, 19 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 7 ConstructedInterpolants, 0 QuantifiedInterpolants, 49 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, 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 20:35:49,036 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 20:35:49,037 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 20:35:49,045 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 20:35:49,045 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 20:35:49,046 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 20:35:49,047 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 20:35:49,048 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 20:35:49,050 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 20:35:49,050 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 20:35:49,051 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 20:35:49,052 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 20:35:49,052 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 20:35:49,053 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 20:35:49,053 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 20:35:49,054 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 20:35:49,055 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 20:35:49,055 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 20:35:49,057 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 20:35:49,058 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 20:35:49,059 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 20:35:49,060 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 20:35:49,061 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 20:35:49,061 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 20:35:49,063 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 20:35:49,063 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 20:35:49,063 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 20:35:49,064 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 20:35:49,064 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 20:35:49,065 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 20:35:49,065 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 20:35:49,066 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 20:35:49,066 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 20:35:49,067 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 20:35:49,067 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 20:35:49,068 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 20:35:49,068 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 20:35:49,068 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 20:35:49,068 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 20:35:49,069 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 20:35:49,069 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 20:35:49,070 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_29df1d55-9045-45da-883e-9de0ff28f899/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2019-12-07 20:35:49,080 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 20:35:49,080 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 20:35:49,081 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-12-07 20:35:49,081 INFO L138 SettingsManager]: * User list type=DISABLED [2019-12-07 20:35:49,081 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-12-07 20:35:49,081 INFO L138 SettingsManager]: * Explicit value domain=true [2019-12-07 20:35:49,081 INFO L138 SettingsManager]: * Octagon Domain=false [2019-12-07 20:35:49,081 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-12-07 20:35:49,082 INFO L138 SettingsManager]: * Interval Domain=false [2019-12-07 20:35:49,082 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 20:35:49,082 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-07 20:35:49,082 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-07 20:35:49,082 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 20:35:49,083 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-07 20:35:49,083 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-07 20:35:49,083 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-07 20:35:49,083 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-12-07 20:35:49,083 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-12-07 20:35:49,083 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-12-07 20:35:49,083 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-07 20:35:49,083 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 20:35:49,084 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 20:35:49,084 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-07 20:35:49,084 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 20:35:49,084 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-07 20:35:49,084 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-07 20:35:49,084 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-07 20:35:49,084 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 20:35:49,084 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 20:35:49,085 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-07 20:35:49,085 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-07 20:35:49,085 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2019-12-07 20:35:49,085 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-12-07 20:35:49,085 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-07 20:35:49,085 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 20:35:49,085 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-12-07 20:35:49,085 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_29df1d55-9045-45da-883e-9de0ff28f899/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 -> 56df0817616f6c5016a1ac832f32db0c87e1c370 [2019-12-07 20:35:49,247 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 20:35:49,257 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 20:35:49,259 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 20:35:49,260 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 20:35:49,260 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 20:35:49,260 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_29df1d55-9045-45da-883e-9de0ff28f899/bin/utaipan/../../sv-benchmarks/c/float-newlib/double_req_bl_1012b.c [2019-12-07 20:35:49,300 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_29df1d55-9045-45da-883e-9de0ff28f899/bin/utaipan/data/e9a53c760/2d21520632504dc09d53a6ac7c4c5956/FLAG2346c41dc [2019-12-07 20:35:49,634 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 20:35:49,635 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_29df1d55-9045-45da-883e-9de0ff28f899/sv-benchmarks/c/float-newlib/double_req_bl_1012b.c [2019-12-07 20:35:49,639 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_29df1d55-9045-45da-883e-9de0ff28f899/bin/utaipan/data/e9a53c760/2d21520632504dc09d53a6ac7c4c5956/FLAG2346c41dc [2019-12-07 20:35:49,647 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_29df1d55-9045-45da-883e-9de0ff28f899/bin/utaipan/data/e9a53c760/2d21520632504dc09d53a6ac7c4c5956 [2019-12-07 20:35:49,649 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 20:35:49,650 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 20:35:49,651 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 20:35:49,651 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 20:35:49,653 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 20:35:49,653 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 08:35:49" (1/1) ... [2019-12-07 20:35:49,655 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3dc928b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:35:49, skipping insertion in model container [2019-12-07 20:35:49,655 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 08:35:49" (1/1) ... [2019-12-07 20:35:49,661 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 20:35:49,673 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 20:35:49,788 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 20:35:49,791 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 20:35:49,811 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 20:35:49,860 INFO L208 MainTranslator]: Completed translation [2019-12-07 20:35:49,860 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:35:49 WrapperNode [2019-12-07 20:35:49,860 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 20:35:49,860 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 20:35:49,860 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 20:35:49,861 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 20:35:49,866 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:35:49" (1/1) ... [2019-12-07 20:35:49,874 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:35:49" (1/1) ... [2019-12-07 20:35:49,888 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 20:35:49,888 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 20:35:49,889 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 20:35:49,889 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 20:35:49,895 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:35:49" (1/1) ... [2019-12-07 20:35:49,895 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:35:49" (1/1) ... [2019-12-07 20:35:49,897 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:35:49" (1/1) ... [2019-12-07 20:35:49,898 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:35:49" (1/1) ... [2019-12-07 20:35:49,905 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:35:49" (1/1) ... [2019-12-07 20:35:49,908 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:35:49" (1/1) ... [2019-12-07 20:35:49,910 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:35:49" (1/1) ... [2019-12-07 20:35:49,912 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 20:35:49,912 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 20:35:49,912 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 20:35:49,912 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 20:35:49,913 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:35:49" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_29df1d55-9045-45da-883e-9de0ff28f899/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 20:35:49,954 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2019-12-07 20:35:49,954 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2019-12-07 20:35:49,954 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-12-07 20:35:49,954 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2019-12-07 20:35:49,954 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 20:35:49,954 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 20:35:49,955 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2019-12-07 20:35:49,955 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-12-07 20:35:50,133 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 20:35:50,133 INFO L287 CfgBuilder]: Removed 14 assume(true) statements. [2019-12-07 20:35:50,134 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 08:35:50 BoogieIcfgContainer [2019-12-07 20:35:50,134 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 20:35:50,135 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-07 20:35:50,135 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-07 20:35:50,137 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-07 20:35:50,137 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 08:35:49" (1/3) ... [2019-12-07 20:35:50,137 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c986268 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 08:35:50, skipping insertion in model container [2019-12-07 20:35:50,138 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:35:49" (2/3) ... [2019-12-07 20:35:50,138 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c986268 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 08:35:50, skipping insertion in model container [2019-12-07 20:35:50,138 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 08:35:50" (3/3) ... [2019-12-07 20:35:50,139 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1012b.c [2019-12-07 20:35:50,145 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-07 20:35:50,149 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-12-07 20:35:50,156 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-12-07 20:35:50,171 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-07 20:35:50,171 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-07 20:35:50,171 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-07 20:35:50,171 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 20:35:50,171 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 20:35:50,171 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-07 20:35:50,171 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 20:35:50,171 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-07 20:35:50,181 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states. [2019-12-07 20:35:50,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-12-07 20:35:50,185 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 20:35:50,186 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 20:35:50,186 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 20:35:50,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 20:35:50,190 INFO L82 PathProgramCache]: Analyzing trace with hash -969083750, now seen corresponding path program 1 times [2019-12-07 20:35:50,197 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-12-07 20:35:50,198 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [378215628] [2019-12-07 20:35:50,198 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_29df1d55-9045-45da-883e-9de0ff28f899/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 20:35:50,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 20:35:50,261 INFO L264 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 1 conjunts are in the unsatisfiable core [2019-12-07 20:35:50,264 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 20:35:50,273 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 20:35:50,274 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 20:35:50,276 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 20:35:50,277 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [378215628] [2019-12-07 20:35:50,277 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-12-07 20:35:50,277 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2019-12-07 20:35:50,278 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724694043] [2019-12-07 20:35:50,281 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-12-07 20:35:50,281 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-12-07 20:35:50,289 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-12-07 20:35:50,290 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-12-07 20:35:50,291 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 2 states. [2019-12-07 20:35:50,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 20:35:50,302 INFO L93 Difference]: Finished difference Result 34 states and 46 transitions. [2019-12-07 20:35:50,302 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-12-07 20:35:50,303 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2019-12-07 20:35:50,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 20:35:50,309 INFO L225 Difference]: With dead ends: 34 [2019-12-07 20:35:50,309 INFO L226 Difference]: Without dead ends: 15 [2019-12-07 20:35:50,311 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 20 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 20:35:50,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2019-12-07 20:35:50,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2019-12-07 20:35:50,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2019-12-07 20:35:50,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 14 transitions. [2019-12-07 20:35:50,333 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 14 transitions. Word has length 11 [2019-12-07 20:35:50,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 20:35:50,333 INFO L462 AbstractCegarLoop]: Abstraction has 15 states and 14 transitions. [2019-12-07 20:35:50,333 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-12-07 20:35:50,334 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 14 transitions. [2019-12-07 20:35:50,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-12-07 20:35:50,334 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 20:35:50,334 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 20:35:50,535 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2019-12-07 20:35:50,535 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 20:35:50,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 20:35:50,536 INFO L82 PathProgramCache]: Analyzing trace with hash 657368916, now seen corresponding path program 1 times [2019-12-07 20:35:50,539 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-12-07 20:35:50,539 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1613687379] [2019-12-07 20:35:50,539 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_29df1d55-9045-45da-883e-9de0ff28f899/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 20:35:50,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 20:35:50,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 20:35:50,842 INFO L174 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2019-12-07 20:35:50,843 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-12-07 20:35:51,044 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2019-12-07 20:35:51,087 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 08:35:51 BoogieIcfgContainer [2019-12-07 20:35:51,087 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-07 20:35:51,088 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 20:35:51,088 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 20:35:51,088 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 20:35:51,088 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 08:35:50" (3/4) ... [2019-12-07 20:35:51,091 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-12-07 20:35:51,124 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_29df1d55-9045-45da-883e-9de0ff28f899/bin/utaipan/witness.graphml [2019-12-07 20:35:51,124 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 20:35:51,125 INFO L168 Benchmark]: Toolchain (without parser) took 1475.07 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 139.5 MB). Free memory was 951.0 MB in the beginning and 1.0 GB in the end (delta: -92.4 MB). Peak memory consumption was 47.0 MB. Max. memory is 11.5 GB. [2019-12-07 20:35:51,126 INFO L168 Benchmark]: CDTParser took 0.13 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 20:35:51,126 INFO L168 Benchmark]: CACSL2BoogieTranslator took 209.45 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 139.5 MB). Free memory was 951.0 MB in the beginning and 1.1 GB in the end (delta: -184.1 MB). Peak memory consumption was 21.0 MB. Max. memory is 11.5 GB. [2019-12-07 20:35:51,127 INFO L168 Benchmark]: Boogie Procedure Inliner took 27.91 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: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. [2019-12-07 20:35:51,127 INFO L168 Benchmark]: Boogie Preprocessor took 23.48 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 20:35:51,127 INFO L168 Benchmark]: RCFGBuilder took 222.28 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: 18.2 MB). Peak memory consumption was 18.2 MB. Max. memory is 11.5 GB. [2019-12-07 20:35:51,127 INFO L168 Benchmark]: TraceAbstraction took 952.21 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: 59.8 MB). Peak memory consumption was 59.8 MB. Max. memory is 11.5 GB. [2019-12-07 20:35:51,128 INFO L168 Benchmark]: Witness Printer took 36.68 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: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. [2019-12-07 20:35:51,129 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 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 209.45 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 139.5 MB). Free memory was 951.0 MB in the beginning and 1.1 GB in the end (delta: -184.1 MB). Peak memory consumption was 21.0 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 27.91 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: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 23.48 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 222.28 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: 18.2 MB). Peak memory consumption was 18.2 MB. Max. memory is 11.5 GB. * TraceAbstraction took 952.21 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: 59.8 MB). Peak memory consumption was 59.8 MB. Max. memory is 11.5 GB. * Witness Printer took 36.68 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: 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: 73]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L68] double x = -1.0 / 0.0; [L45] __uint32_t high; [L47] ieee_double_shape_type gh_u; [L48] gh_u.value = (x) [L49] EXPR gh_u.parts.msw [L49] (high) = gh_u.parts.msw [L52] ieee_double_shape_type sh_u; [L53] sh_u.value = (x) [L54] sh_u.parts.msw = (high & 0x7fffffff) [L55] EXPR sh_u.value [L55] (x) = sh_u.value [L57] return x; [L69] double res = fabs_double(x); [L31] __int32_t hx, lx; [L33] ieee_double_shape_type ew_u; [L34] ew_u.value = (x) [L35] EXPR ew_u.parts.msw [L35] (hx) = ew_u.parts.msw [L36] EXPR ew_u.parts.lsw [L36] (lx) = ew_u.parts.lsw [L38] hx &= 0x7fffffff [L39] hx |= (__uint32_t)(lx | (-lx)) >> 31 [L40] hx = 0x7ff00000 - hx [L41] return 1 - (int)((__uint32_t)(hx | (-hx)) >> 31); [L72] COND TRUE !isinf_double(res) [L73] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 18 locations, 1 error locations. Result: UNSAFE, OverallTime: 0.8s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 17 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 20 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=18occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 25 NumberOfCodeBlocks, 25 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 20 ConstructedInterpolants, 0 QuantifiedInterpolants, 200 SizeOfPredicates, 0 NumberOfNonLiveVariables, 22 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...