./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/double_req_bl_1121a.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_c45a0731-977d-4d9c-9dbe-9d68a5584080/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_c45a0731-977d-4d9c-9dbe-9d68a5584080/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_c45a0731-977d-4d9c-9dbe-9d68a5584080/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_c45a0731-977d-4d9c-9dbe-9d68a5584080/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1121a.c -s /tmp/vcloud-vcloud-master/worker/run_dir_c45a0731-977d-4d9c-9dbe-9d68a5584080/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_c45a0731-977d-4d9c-9dbe-9d68a5584080/bin/uautomizer --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 2718f642e307f3f62e4f4b06b51ef37595256727 ................................................................................................................................................................................................................................................................................................... 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_c45a0731-977d-4d9c-9dbe-9d68a5584080/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_c45a0731-977d-4d9c-9dbe-9d68a5584080/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_c45a0731-977d-4d9c-9dbe-9d68a5584080/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_c45a0731-977d-4d9c-9dbe-9d68a5584080/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1121a.c -s /tmp/vcloud-vcloud-master/worker/run_dir_c45a0731-977d-4d9c-9dbe-9d68a5584080/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_c45a0731-977d-4d9c-9dbe-9d68a5584080/bin/uautomizer --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 2718f642e307f3f62e4f4b06b51ef37595256727 ........................................................................................................................................................................................................................................................................................................................................................................ 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 18:49:11,133 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 18:49:11,134 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 18:49:11,142 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 18:49:11,142 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 18:49:11,143 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 18:49:11,144 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 18:49:11,145 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 18:49:11,147 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 18:49:11,147 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 18:49:11,148 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 18:49:11,149 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 18:49:11,149 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 18:49:11,150 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 18:49:11,150 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 18:49:11,151 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 18:49:11,152 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 18:49:11,153 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 18:49:11,154 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 18:49:11,156 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 18:49:11,157 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 18:49:11,158 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 18:49:11,158 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 18:49:11,159 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 18:49:11,160 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 18:49:11,161 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 18:49:11,161 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 18:49:11,161 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 18:49:11,161 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 18:49:11,162 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 18:49:11,162 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 18:49:11,163 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 18:49:11,163 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 18:49:11,164 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 18:49:11,165 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 18:49:11,165 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 18:49:11,165 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 18:49:11,166 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 18:49:11,166 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 18:49:11,167 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 18:49:11,167 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 18:49:11,168 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_c45a0731-977d-4d9c-9dbe-9d68a5584080/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-12-07 18:49:11,180 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 18:49:11,180 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 18:49:11,181 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-07 18:49:11,182 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-07 18:49:11,182 INFO L138 SettingsManager]: * Use SBE=true [2019-12-07 18:49:11,182 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 18:49:11,182 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-07 18:49:11,182 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-07 18:49:11,183 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-07 18:49:11,183 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 18:49:11,183 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-07 18:49:11,183 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-07 18:49:11,183 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-07 18:49:11,183 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-07 18:49:11,184 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 18:49:11,184 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 18:49:11,184 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-07 18:49:11,184 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 18:49:11,184 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-07 18:49:11,185 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-07 18:49:11,185 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-07 18:49:11,185 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 18:49:11,185 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 18:49:11,185 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-07 18:49:11,186 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-07 18:49:11,186 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-12-07 18:49:11,186 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-07 18:49:11,186 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-07 18:49:11,186 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 18:49:11,186 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_c45a0731-977d-4d9c-9dbe-9d68a5584080/bin/uautomizer 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 -> Automizer 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 -> 2718f642e307f3f62e4f4b06b51ef37595256727 [2019-12-07 18:49:11,293 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 18:49:11,302 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 18:49:11,305 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 18:49:11,306 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 18:49:11,306 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 18:49:11,307 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_c45a0731-977d-4d9c-9dbe-9d68a5584080/bin/uautomizer/../../sv-benchmarks/c/float-newlib/double_req_bl_1121a.c [2019-12-07 18:49:11,352 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_c45a0731-977d-4d9c-9dbe-9d68a5584080/bin/uautomizer/data/137200191/941b2f2d862e43a49aed2bfd1a0e6123/FLAG6b04d01cb [2019-12-07 18:49:11,713 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 18:49:11,713 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_c45a0731-977d-4d9c-9dbe-9d68a5584080/sv-benchmarks/c/float-newlib/double_req_bl_1121a.c [2019-12-07 18:49:11,718 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_c45a0731-977d-4d9c-9dbe-9d68a5584080/bin/uautomizer/data/137200191/941b2f2d862e43a49aed2bfd1a0e6123/FLAG6b04d01cb [2019-12-07 18:49:11,727 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_c45a0731-977d-4d9c-9dbe-9d68a5584080/bin/uautomizer/data/137200191/941b2f2d862e43a49aed2bfd1a0e6123 [2019-12-07 18:49:11,728 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 18:49:11,729 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 18:49:11,730 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 18:49:11,730 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 18:49:11,732 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 18:49:11,733 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 06:49:11" (1/1) ... [2019-12-07 18:49:11,735 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b1d1bf7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:49:11, skipping insertion in model container [2019-12-07 18:49:11,735 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 06:49:11" (1/1) ... [2019-12-07 18:49:11,739 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 18:49:11,756 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 18:49:11,928 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 18:49:11,931 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 18:49:11,961 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 18:49:11,974 INFO L208 MainTranslator]: Completed translation [2019-12-07 18:49:11,974 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:49:11 WrapperNode [2019-12-07 18:49:11,974 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 18:49:11,974 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 18:49:11,974 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 18:49:11,975 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 18:49:11,980 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:49:11" (1/1) ... [2019-12-07 18:49:11,987 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:49:11" (1/1) ... [2019-12-07 18:49:12,009 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 18:49:12,009 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 18:49:12,009 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 18:49:12,009 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 18:49:12,015 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:49:11" (1/1) ... [2019-12-07 18:49:12,015 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:49:11" (1/1) ... [2019-12-07 18:49:12,018 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:49:11" (1/1) ... [2019-12-07 18:49:12,018 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:49:11" (1/1) ... [2019-12-07 18:49:12,026 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:49:11" (1/1) ... [2019-12-07 18:49:12,031 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:49:11" (1/1) ... [2019-12-07 18:49:12,033 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:49:11" (1/1) ... [2019-12-07 18:49:12,036 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 18:49:12,037 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 18:49:12,037 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 18:49:12,037 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 18:49:12,037 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:49:11" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c45a0731-977d-4d9c-9dbe-9d68a5584080/bin/uautomizer/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 18:49:12,075 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-12-07 18:49:12,075 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-12-07 18:49:12,075 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2019-12-07 18:49:12,075 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2019-12-07 18:49:12,076 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 18:49:12,076 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 18:49:12,076 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-12-07 18:49:12,076 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2019-12-07 18:49:12,076 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-12-07 18:49:12,356 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 18:49:12,356 INFO L287 CfgBuilder]: Removed 22 assume(true) statements. [2019-12-07 18:49:12,357 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 06:49:12 BoogieIcfgContainer [2019-12-07 18:49:12,357 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 18:49:12,358 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-07 18:49:12,358 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-07 18:49:12,360 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-07 18:49:12,360 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 06:49:11" (1/3) ... [2019-12-07 18:49:12,361 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e3f1a76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 06:49:12, skipping insertion in model container [2019-12-07 18:49:12,361 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:49:11" (2/3) ... [2019-12-07 18:49:12,361 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e3f1a76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 06:49:12, skipping insertion in model container [2019-12-07 18:49:12,361 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 06:49:12" (3/3) ... [2019-12-07 18:49:12,362 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1121a.c [2019-12-07 18:49:12,368 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-07 18:49:12,373 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-12-07 18:49:12,380 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-12-07 18:49:12,395 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-07 18:49:12,395 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-07 18:49:12,395 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-07 18:49:12,395 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 18:49:12,396 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 18:49:12,396 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-07 18:49:12,396 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 18:49:12,396 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-07 18:49:12,406 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states. [2019-12-07 18:49:12,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-12-07 18:49:12,410 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 18:49:12,410 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 18:49:12,411 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 18:49:12,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:49:12,414 INFO L82 PathProgramCache]: Analyzing trace with hash 668833300, now seen corresponding path program 1 times [2019-12-07 18:49:12,420 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:49:12,420 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [619539006] [2019-12-07 18:49:12,421 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:49:12,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:49:12,502 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 18:49:12,503 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [619539006] [2019-12-07 18:49:12,503 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 18:49:12,503 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-07 18:49:12,504 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924099027] [2019-12-07 18:49:12,506 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-12-07 18:49:12,507 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 18:49:12,515 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-12-07 18:49:12,515 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-12-07 18:49:12,516 INFO L87 Difference]: Start difference. First operand 55 states. Second operand 2 states. [2019-12-07 18:49:12,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 18:49:12,531 INFO L93 Difference]: Finished difference Result 108 states and 190 transitions. [2019-12-07 18:49:12,531 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-12-07 18:49:12,532 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2019-12-07 18:49:12,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 18:49:12,539 INFO L225 Difference]: With dead ends: 108 [2019-12-07 18:49:12,539 INFO L226 Difference]: Without dead ends: 52 [2019-12-07 18:49:12,541 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 18:49:12,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2019-12-07 18:49:12,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2019-12-07 18:49:12,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2019-12-07 18:49:12,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 78 transitions. [2019-12-07 18:49:12,566 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 78 transitions. Word has length 10 [2019-12-07 18:49:12,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 18:49:12,566 INFO L462 AbstractCegarLoop]: Abstraction has 52 states and 78 transitions. [2019-12-07 18:49:12,566 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-12-07 18:49:12,566 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 78 transitions. [2019-12-07 18:49:12,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-12-07 18:49:12,567 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 18:49:12,567 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 18:49:12,567 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 18:49:12,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:49:12,567 INFO L82 PathProgramCache]: Analyzing trace with hash 133394385, now seen corresponding path program 1 times [2019-12-07 18:49:12,567 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:49:12,567 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1680151056] [2019-12-07 18:49:12,567 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:49:12,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 18:49:12,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 18:49:12,654 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 18:49:12,654 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-12-07 18:49:12,675 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 06:49:12 BoogieIcfgContainer [2019-12-07 18:49:12,675 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-07 18:49:12,676 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 18:49:12,676 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 18:49:12,676 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 18:49:12,676 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 06:49:12" (3/4) ... [2019-12-07 18:49:12,678 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-12-07 18:49:12,678 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 18:49:12,680 INFO L168 Benchmark]: Toolchain (without parser) took 950.06 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 92.3 MB). Free memory was 948.9 MB in the beginning and 1.0 GB in the end (delta: -60.6 MB). Peak memory consumption was 31.7 MB. Max. memory is 11.5 GB. [2019-12-07 18:49:12,680 INFO L168 Benchmark]: CDTParser took 0.20 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 18:49:12,681 INFO L168 Benchmark]: CACSL2BoogieTranslator took 244.20 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 92.3 MB). Free memory was 948.9 MB in the beginning and 1.1 GB in the end (delta: -131.8 MB). Peak memory consumption was 23.0 MB. Max. memory is 11.5 GB. [2019-12-07 18:49:12,681 INFO L168 Benchmark]: Boogie Procedure Inliner took 34.33 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 18:49:12,681 INFO L168 Benchmark]: Boogie Preprocessor took 27.47 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 18:49:12,682 INFO L168 Benchmark]: RCFGBuilder took 320.81 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: 33.7 MB). Peak memory consumption was 33.7 MB. Max. memory is 11.5 GB. [2019-12-07 18:49:12,682 INFO L168 Benchmark]: TraceAbstraction took 317.45 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 26.8 MB). Peak memory consumption was 26.8 MB. Max. memory is 11.5 GB. [2019-12-07 18:49:12,682 INFO L168 Benchmark]: Witness Printer took 2.88 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 18:49:12,685 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 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 244.20 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 92.3 MB). Free memory was 948.9 MB in the beginning and 1.1 GB in the end (delta: -131.8 MB). Peak memory consumption was 23.0 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 34.33 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 27.47 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 320.81 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: 33.7 MB). Peak memory consumption was 33.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 317.45 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 26.8 MB). Peak memory consumption was 26.8 MB. Max. memory is 11.5 GB. * Witness Printer took 2.88 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: 175]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of bitwiseOr at line 44, overapproximation of someUnaryDOUBLEoperation at line 20, overapproximation of bitwiseAnd at line 39, overapproximation of someBinaryArithmeticDOUBLEoperation at line 45, overapproximation of someBinaryDOUBLEComparisonOperation at line 16, overapproximation of bitwiseXor at line 40. Possible FailurePath: [L18-L21] static const double one_fmod = 1.0, Zero_fmod[] = { 0.0, -0.0, }; VAL [one_fmod=1, Zero_fmod={3:0}] [L169] double x = __VERIFIER_nondet_double(); [L170] double y = 0.0; [L24] __int32_t n, hx, hy, hz, ix, iy, sx, i; [L25] __uint32_t lx, ly, lz; VAL [one_fmod=1, Zero_fmod={3:0}] [L28] ieee_double_shape_type ew_u; [L29] ew_u.value = (x) [L30] EXPR ew_u.parts.msw [L30] (hx) = ew_u.parts.msw [L31] EXPR ew_u.parts.lsw [L31] (lx) = ew_u.parts.lsw [L34] ieee_double_shape_type ew_u; [L35] ew_u.value = (y) [L36] EXPR ew_u.parts.msw [L36] (hy) = ew_u.parts.msw [L37] EXPR ew_u.parts.lsw [L37] (ly) = ew_u.parts.lsw [L39] sx = hx & 0x80000000 [L40] hx ^= sx [L41] hy &= 0x7fffffff VAL [one_fmod=1, Zero_fmod={3:0}] [L43-L44] COND TRUE (hy | ly) == 0 || (hx >= 0x7ff00000) || ((hy | ((ly | -ly) >> 31)) > 0x7ff00000) [L45] return (x * y) / (x * y); VAL [one_fmod=1, Zero_fmod={3:0}] [L171] double res = fmod_double(x, y); [L16] return x != x; VAL [one_fmod=1, Zero_fmod={3:0}] [L174] COND TRUE !isnan_double(res) [L175] __VERIFIER_error() VAL [one_fmod=1, Zero_fmod={3:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 55 locations, 1 error locations. Result: UNSAFE, OverallTime: 0.2s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 81 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=55occurred 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, 22 NumberOfCodeBlocks, 22 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 9 ConstructedInterpolants, 0 QuantifiedInterpolants, 81 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 18:49:14,040 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 18:49:14,042 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 18:49:14,050 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 18:49:14,050 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 18:49:14,051 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 18:49:14,052 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 18:49:14,053 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 18:49:14,054 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 18:49:14,055 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 18:49:14,055 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 18:49:14,056 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 18:49:14,056 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 18:49:14,057 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 18:49:14,058 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 18:49:14,059 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 18:49:14,059 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 18:49:14,060 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 18:49:14,061 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 18:49:14,063 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 18:49:14,064 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 18:49:14,065 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 18:49:14,065 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 18:49:14,066 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 18:49:14,068 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 18:49:14,068 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 18:49:14,068 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 18:49:14,069 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 18:49:14,069 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 18:49:14,070 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 18:49:14,070 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 18:49:14,070 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 18:49:14,071 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 18:49:14,071 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 18:49:14,072 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 18:49:14,072 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 18:49:14,073 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 18:49:14,073 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 18:49:14,073 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 18:49:14,074 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 18:49:14,074 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 18:49:14,074 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_c45a0731-977d-4d9c-9dbe-9d68a5584080/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2019-12-07 18:49:14,084 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 18:49:14,084 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 18:49:14,085 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-07 18:49:14,085 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-07 18:49:14,085 INFO L138 SettingsManager]: * Use SBE=true [2019-12-07 18:49:14,086 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 18:49:14,086 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-07 18:49:14,086 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-07 18:49:14,086 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 18:49:14,086 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-07 18:49:14,086 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-07 18:49:14,086 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-07 18:49:14,087 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-12-07 18:49:14,087 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-12-07 18:49:14,087 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-07 18:49:14,087 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 18:49:14,087 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 18:49:14,087 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-07 18:49:14,087 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 18:49:14,087 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-07 18:49:14,088 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-07 18:49:14,088 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-07 18:49:14,088 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 18:49:14,088 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 18:49:14,088 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-07 18:49:14,088 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-07 18:49:14,088 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2019-12-07 18:49:14,088 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-12-07 18:49:14,089 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-07 18:49:14,089 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 18:49:14,089 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-12-07 18:49:14,089 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_c45a0731-977d-4d9c-9dbe-9d68a5584080/bin/uautomizer 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 -> Automizer 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 -> 2718f642e307f3f62e4f4b06b51ef37595256727 [2019-12-07 18:49:14,255 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 18:49:14,266 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 18:49:14,269 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 18:49:14,270 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 18:49:14,270 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 18:49:14,271 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_c45a0731-977d-4d9c-9dbe-9d68a5584080/bin/uautomizer/../../sv-benchmarks/c/float-newlib/double_req_bl_1121a.c [2019-12-07 18:49:14,313 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_c45a0731-977d-4d9c-9dbe-9d68a5584080/bin/uautomizer/data/2c3f93b42/0522211b00cc40f190d9c7bbff330367/FLAGb90a4ac1b [2019-12-07 18:49:14,771 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 18:49:14,772 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_c45a0731-977d-4d9c-9dbe-9d68a5584080/sv-benchmarks/c/float-newlib/double_req_bl_1121a.c [2019-12-07 18:49:14,777 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_c45a0731-977d-4d9c-9dbe-9d68a5584080/bin/uautomizer/data/2c3f93b42/0522211b00cc40f190d9c7bbff330367/FLAGb90a4ac1b [2019-12-07 18:49:14,785 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_c45a0731-977d-4d9c-9dbe-9d68a5584080/bin/uautomizer/data/2c3f93b42/0522211b00cc40f190d9c7bbff330367 [2019-12-07 18:49:14,787 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 18:49:14,788 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 18:49:14,789 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 18:49:14,789 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 18:49:14,791 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 18:49:14,791 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 06:49:14" (1/1) ... [2019-12-07 18:49:14,793 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@203973a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:49:14, skipping insertion in model container [2019-12-07 18:49:14,793 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 06:49:14" (1/1) ... [2019-12-07 18:49:14,798 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 18:49:14,814 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 18:49:14,948 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 18:49:14,953 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 18:49:15,018 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 18:49:15,036 INFO L208 MainTranslator]: Completed translation [2019-12-07 18:49:15,036 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:49:15 WrapperNode [2019-12-07 18:49:15,036 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 18:49:15,037 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 18:49:15,037 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 18:49:15,037 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 18:49:15,042 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:49:15" (1/1) ... [2019-12-07 18:49:15,053 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:49:15" (1/1) ... [2019-12-07 18:49:15,073 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 18:49:15,074 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 18:49:15,074 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 18:49:15,074 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 18:49:15,080 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:49:15" (1/1) ... [2019-12-07 18:49:15,080 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:49:15" (1/1) ... [2019-12-07 18:49:15,083 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:49:15" (1/1) ... [2019-12-07 18:49:15,084 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:49:15" (1/1) ... [2019-12-07 18:49:15,093 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:49:15" (1/1) ... [2019-12-07 18:49:15,098 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:49:15" (1/1) ... [2019-12-07 18:49:15,101 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:49:15" (1/1) ... [2019-12-07 18:49:15,104 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 18:49:15,104 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 18:49:15,104 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 18:49:15,105 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 18:49:15,105 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:49:15" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c45a0731-977d-4d9c-9dbe-9d68a5584080/bin/uautomizer/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 18:49:15,143 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2019-12-07 18:49:15,143 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2019-12-07 18:49:15,143 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-12-07 18:49:15,143 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8 [2019-12-07 18:49:15,143 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2019-12-07 18:49:15,143 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 18:49:15,143 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 18:49:15,143 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2019-12-07 18:49:15,144 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-12-07 18:49:18,529 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 18:49:18,529 INFO L287 CfgBuilder]: Removed 22 assume(true) statements. [2019-12-07 18:49:18,530 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 06:49:18 BoogieIcfgContainer [2019-12-07 18:49:18,530 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 18:49:18,530 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-07 18:49:18,530 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-07 18:49:18,532 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-07 18:49:18,532 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 06:49:14" (1/3) ... [2019-12-07 18:49:18,533 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48fd0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 06:49:18, skipping insertion in model container [2019-12-07 18:49:18,533 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:49:15" (2/3) ... [2019-12-07 18:49:18,533 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48fd0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 06:49:18, skipping insertion in model container [2019-12-07 18:49:18,533 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 06:49:18" (3/3) ... [2019-12-07 18:49:18,534 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1121a.c [2019-12-07 18:49:18,540 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-07 18:49:18,545 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-12-07 18:49:18,552 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-12-07 18:49:18,566 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-07 18:49:18,566 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-07 18:49:18,567 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-07 18:49:18,567 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 18:49:18,567 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 18:49:18,567 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-07 18:49:18,567 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 18:49:18,567 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-07 18:49:18,576 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states. [2019-12-07 18:49:18,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-12-07 18:49:18,580 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 18:49:18,581 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 18:49:18,581 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 18:49:18,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:49:18,585 INFO L82 PathProgramCache]: Analyzing trace with hash 668833300, now seen corresponding path program 1 times [2019-12-07 18:49:18,592 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-12-07 18:49:18,592 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [901022435] [2019-12-07 18:49:18,592 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c45a0731-977d-4d9c-9dbe-9d68a5584080/bin/uautomizer/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 18:49:19,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:49:19,406 INFO L264 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 1 conjunts are in the unsatisfiable core [2019-12-07 18:49:19,410 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 18:49:19,420 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 18:49:19,420 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 18:49:19,423 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 18:49:19,424 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [901022435] [2019-12-07 18:49:19,424 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-12-07 18:49:19,424 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2019-12-07 18:49:19,425 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540780700] [2019-12-07 18:49:19,428 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-12-07 18:49:19,428 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-12-07 18:49:19,437 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-12-07 18:49:19,437 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-12-07 18:49:19,438 INFO L87 Difference]: Start difference. First operand 55 states. Second operand 2 states. [2019-12-07 18:49:19,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 18:49:19,454 INFO L93 Difference]: Finished difference Result 108 states and 190 transitions. [2019-12-07 18:49:19,454 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-12-07 18:49:19,455 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2019-12-07 18:49:19,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 18:49:19,462 INFO L225 Difference]: With dead ends: 108 [2019-12-07 18:49:19,462 INFO L226 Difference]: Without dead ends: 52 [2019-12-07 18:49:19,464 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 18 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 18:49:19,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2019-12-07 18:49:19,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2019-12-07 18:49:19,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2019-12-07 18:49:19,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 78 transitions. [2019-12-07 18:49:19,490 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 78 transitions. Word has length 10 [2019-12-07 18:49:19,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 18:49:19,491 INFO L462 AbstractCegarLoop]: Abstraction has 52 states and 78 transitions. [2019-12-07 18:49:19,491 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-12-07 18:49:19,491 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 78 transitions. [2019-12-07 18:49:19,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-12-07 18:49:19,491 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 18:49:19,491 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 18:49:19,692 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2019-12-07 18:49:19,693 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 18:49:19,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:49:19,694 INFO L82 PathProgramCache]: Analyzing trace with hash 133394385, now seen corresponding path program 1 times [2019-12-07 18:49:19,696 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-12-07 18:49:19,697 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1182278726] [2019-12-07 18:49:19,698 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c45a0731-977d-4d9c-9dbe-9d68a5584080/bin/uautomizer/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 18:49:20,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:49:20,654 INFO L264 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 11 conjunts are in the unsatisfiable core [2019-12-07 18:49:20,656 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 18:49:31,251 WARN L192 SmtUtils]: Spent 3.96 s on a formula simplification that was a NOOP. DAG size: 8 [2019-12-07 18:49:31,254 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 18:49:39,536 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 18:49:39,536 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 18:49:53,324 WARN L860 $PredicateComparison]: unable to prove that (forall ((ULTIMATE.start_fmod_double_~x (_ FloatingPoint 11 53))) (not (let ((.cse0 (let ((.cse1 (fp.mul c_currentRoundingMode ULTIMATE.start_fmod_double_~x c_ULTIMATE.start_fmod_double_~y))) (fp.div c_currentRoundingMode .cse1 .cse1)))) (fp.eq .cse0 .cse0)))) is different from true [2019-12-07 18:49:55,098 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 18:49:55,099 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1182278726] [2019-12-07 18:49:55,099 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-12-07 18:49:55,099 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 11 [2019-12-07 18:49:55,099 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44489324] [2019-12-07 18:49:55,101 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-12-07 18:49:55,101 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-12-07 18:49:55,101 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-12-07 18:49:55,101 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=4, NotChecked=16, Total=110 [2019-12-07 18:49:55,102 INFO L87 Difference]: Start difference. First operand 52 states and 78 transitions. Second operand 11 states. [2019-12-07 18:49:59,200 WARN L860 $PredicateComparison]: unable to prove that (and (= c_currentRoundingMode roundNearestTiesToEven) (= (_ +zero 11 53) c_ULTIMATE.start_fmod_double_~y) (forall ((ULTIMATE.start_fmod_double_~x (_ FloatingPoint 11 53))) (not (let ((.cse0 (let ((.cse1 (fp.mul c_currentRoundingMode ULTIMATE.start_fmod_double_~x c_ULTIMATE.start_fmod_double_~y))) (fp.div c_currentRoundingMode .cse1 .cse1)))) (fp.eq .cse0 .cse0))))) is different from true [2019-12-07 18:50:03,625 WARN L860 $PredicateComparison]: unable to prove that (and (exists ((ULTIMATE.start_fmod_double_~x (_ FloatingPoint 11 53))) (= (let ((.cse0 (fp.mul roundNearestTiesToEven ULTIMATE.start_fmod_double_~x (_ +zero 11 53)))) (fp.div roundNearestTiesToEven .cse0 .cse0)) |c_ULTIMATE.start_fmod_double_#res|)) (not (fp.eq |c_ULTIMATE.start_fmod_double_#res| |c_ULTIMATE.start_fmod_double_#res|))) is different from true [2019-12-07 18:50:05,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 18:50:05,877 INFO L93 Difference]: Finished difference Result 57 states and 82 transitions. [2019-12-07 18:50:05,914 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-12-07 18:50:05,914 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 12 [2019-12-07 18:50:05,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 18:50:05,916 INFO L225 Difference]: With dead ends: 57 [2019-12-07 18:50:05,916 INFO L226 Difference]: Without dead ends: 52 [2019-12-07 18:50:05,917 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 3 IntricatePredicates, 1 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 42.4s TimeCoverageRelationStatistics Valid=34, Invalid=82, Unknown=6, NotChecked=60, Total=182 [2019-12-07 18:50:05,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2019-12-07 18:50:05,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2019-12-07 18:50:05,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2019-12-07 18:50:05,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 77 transitions. [2019-12-07 18:50:05,923 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 77 transitions. Word has length 12 [2019-12-07 18:50:05,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 18:50:05,923 INFO L462 AbstractCegarLoop]: Abstraction has 52 states and 77 transitions. [2019-12-07 18:50:05,923 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-12-07 18:50:05,924 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 77 transitions. [2019-12-07 18:50:05,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-12-07 18:50:05,924 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 18:50:05,924 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 18:50:06,125 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2019-12-07 18:50:06,126 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 18:50:06,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:50:06,127 INFO L82 PathProgramCache]: Analyzing trace with hash -910533226, now seen corresponding path program 1 times [2019-12-07 18:50:06,129 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-12-07 18:50:06,129 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [591257086] [2019-12-07 18:50:06,130 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c45a0731-977d-4d9c-9dbe-9d68a5584080/bin/uautomizer/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2019-12-07 18:50:06,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 18:50:06,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 18:50:06,415 INFO L174 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2019-12-07 18:50:06,416 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-12-07 18:50:06,616 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2019-12-07 18:50:06,690 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 06:50:06 BoogieIcfgContainer [2019-12-07 18:50:06,690 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-07 18:50:06,691 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 18:50:06,691 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 18:50:06,691 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 18:50:06,692 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 06:49:18" (3/4) ... [2019-12-07 18:50:06,693 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-12-07 18:50:06,732 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_c45a0731-977d-4d9c-9dbe-9d68a5584080/bin/uautomizer/witness.graphml [2019-12-07 18:50:06,732 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 18:50:06,733 INFO L168 Benchmark]: Toolchain (without parser) took 51944.84 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 127.4 MB). Free memory was 952.4 MB in the beginning and 973.5 MB in the end (delta: -21.1 MB). Peak memory consumption was 106.3 MB. Max. memory is 11.5 GB. [2019-12-07 18:50:06,733 INFO L168 Benchmark]: CDTParser took 0.19 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 18:50:06,733 INFO L168 Benchmark]: CACSL2BoogieTranslator took 247.83 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 127.4 MB). Free memory was 952.4 MB in the beginning and 1.1 GB in the end (delta: -164.3 MB). Peak memory consumption was 20.7 MB. Max. memory is 11.5 GB. [2019-12-07 18:50:06,734 INFO L168 Benchmark]: Boogie Procedure Inliner took 36.81 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 18:50:06,734 INFO L168 Benchmark]: Boogie Preprocessor took 30.63 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 18:50:06,734 INFO L168 Benchmark]: RCFGBuilder took 3425.49 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: 33.4 MB). Peak memory consumption was 33.4 MB. Max. memory is 11.5 GB. [2019-12-07 18:50:06,735 INFO L168 Benchmark]: TraceAbstraction took 48159.83 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 973.5 MB in the end (delta: 103.0 MB). Peak memory consumption was 103.0 MB. Max. memory is 11.5 GB. [2019-12-07 18:50:06,735 INFO L168 Benchmark]: Witness Printer took 41.21 ms. Allocated memory is still 1.2 GB. Free memory is still 973.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 18:50:06,736 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 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 247.83 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 127.4 MB). Free memory was 952.4 MB in the beginning and 1.1 GB in the end (delta: -164.3 MB). Peak memory consumption was 20.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 36.81 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. * Boogie Preprocessor took 30.63 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. * RCFGBuilder took 3425.49 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: 33.4 MB). Peak memory consumption was 33.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 48159.83 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 973.5 MB in the end (delta: 103.0 MB). Peak memory consumption was 103.0 MB. Max. memory is 11.5 GB. * Witness Printer took 41.21 ms. Allocated memory is still 1.2 GB. Free memory is still 973.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 175]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L18-L21] static const double one_fmod = 1.0, Zero_fmod[] = { 0.0, -0.0, }; VAL [one_fmod=1.0, Zero_fmod={2:0}] [L169] double x = __VERIFIER_nondet_double(); [L170] double y = 0.0; [L24] __int32_t n, hx, hy, hz, ix, iy, sx, i; [L25] __uint32_t lx, ly, lz; VAL [one_fmod=1.0, Zero_fmod={2:0}] [L28] ieee_double_shape_type ew_u; [L29] ew_u.value = (x) [L30] EXPR ew_u.parts.msw [L30] (hx) = ew_u.parts.msw [L31] EXPR ew_u.parts.lsw [L31] (lx) = ew_u.parts.lsw [L34] ieee_double_shape_type ew_u; [L35] ew_u.value = (y) [L36] EXPR ew_u.parts.msw [L36] (hy) = ew_u.parts.msw [L37] EXPR ew_u.parts.lsw [L37] (ly) = ew_u.parts.lsw [L39] sx = hx & 0x80000000 [L40] hx ^= sx [L41] hy &= 0x7fffffff VAL [one_fmod=1.0, Zero_fmod={2:0}] [L43-L44] COND FALSE !((hy | ly) == 0 || (hx >= 0x7ff00000) || ((hy | ((ly | -ly) >> 31)) > 0x7ff00000)) VAL [one_fmod=1.0, Zero_fmod={2:0}] [L46] COND TRUE hx <= hy VAL [one_fmod=1.0, Zero_fmod={2:0}] [L47] COND TRUE (hx < hy) || (lx < ly) [L48] return x; VAL [one_fmod=1.0, Zero_fmod={2:0}] [L171] double res = fmod_double(x, y); [L16] return x != x; VAL [one_fmod=1.0, Zero_fmod={2:0}] [L174] COND TRUE !isnan_double(res) [L175] __VERIFIER_error() VAL [one_fmod=1.0, Zero_fmod={2:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 55 locations, 1 error locations. Result: UNSAFE, OverallTime: 48.0s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 10.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 156 SDtfs, 2 SDslu, 336 SDs, 0 SdLazy, 19 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 44 GetRequests, 31 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 3 IntricatePredicates, 1 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 42.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=55occurred 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, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 1.6s SatisfiabilityAnalysisTime, 34.6s InterpolantComputationTime, 36 NumberOfCodeBlocks, 36 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 40 ConstructedInterpolants, 7 QuantifiedInterpolants, 2549 SizeOfPredicates, 11 NumberOfNonLiveVariables, 104 ConjunctsInSsa, 12 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 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! [MP z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forcibly destroying the process Received shutdown request...