./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/double_req_bl_1131a.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_569b44f2-581a-44c5-a93a-ae04ca5c04a4/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_569b44f2-581a-44c5-a93a-ae04ca5c04a4/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_569b44f2-581a-44c5-a93a-ae04ca5c04a4/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_569b44f2-581a-44c5-a93a-ae04ca5c04a4/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1131a.c -s /tmp/vcloud-vcloud-master/worker/run_dir_569b44f2-581a-44c5-a93a-ae04ca5c04a4/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_569b44f2-581a-44c5-a93a-ae04ca5c04a4/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 9e3ed9850bae7d066050d32134f925a24fb3772d ........................................................................................................................................................................................................................................................................................................... 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_569b44f2-581a-44c5-a93a-ae04ca5c04a4/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_569b44f2-581a-44c5-a93a-ae04ca5c04a4/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_569b44f2-581a-44c5-a93a-ae04ca5c04a4/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_569b44f2-581a-44c5-a93a-ae04ca5c04a4/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1131a.c -s /tmp/vcloud-vcloud-master/worker/run_dir_569b44f2-581a-44c5-a93a-ae04ca5c04a4/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_569b44f2-581a-44c5-a93a-ae04ca5c04a4/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 9e3ed9850bae7d066050d32134f925a24fb3772d ......................................................................................................................................................................................................................................................................................................................... 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 11:12:13,099 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 11:12:13,100 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 11:12:13,107 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 11:12:13,108 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 11:12:13,108 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 11:12:13,109 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 11:12:13,111 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 11:12:13,112 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 11:12:13,113 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 11:12:13,113 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 11:12:13,114 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 11:12:13,114 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 11:12:13,115 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 11:12:13,115 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 11:12:13,116 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 11:12:13,117 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 11:12:13,117 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 11:12:13,119 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 11:12:13,121 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 11:12:13,122 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 11:12:13,122 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 11:12:13,123 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 11:12:13,124 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 11:12:13,125 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 11:12:13,126 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 11:12:13,126 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 11:12:13,126 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 11:12:13,126 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 11:12:13,127 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 11:12:13,127 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 11:12:13,128 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 11:12:13,128 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 11:12:13,128 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 11:12:13,129 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 11:12:13,129 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 11:12:13,129 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 11:12:13,130 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 11:12:13,130 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 11:12:13,130 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 11:12:13,131 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 11:12:13,131 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_569b44f2-581a-44c5-a93a-ae04ca5c04a4/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-12-07 11:12:13,140 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 11:12:13,140 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 11:12:13,141 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-07 11:12:13,141 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-07 11:12:13,141 INFO L138 SettingsManager]: * Use SBE=true [2019-12-07 11:12:13,141 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 11:12:13,142 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-07 11:12:13,142 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-07 11:12:13,142 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-07 11:12:13,142 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 11:12:13,142 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-07 11:12:13,142 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-07 11:12:13,142 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-07 11:12:13,142 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-07 11:12:13,142 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 11:12:13,142 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 11:12:13,143 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-07 11:12:13,143 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 11:12:13,143 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-07 11:12:13,143 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-07 11:12:13,143 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-07 11:12:13,143 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 11:12:13,143 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 11:12:13,143 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-07 11:12:13,143 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-07 11:12:13,144 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-12-07 11:12:13,144 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-07 11:12:13,144 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-07 11:12:13,144 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 11:12:13,144 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_569b44f2-581a-44c5-a93a-ae04ca5c04a4/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 -> 9e3ed9850bae7d066050d32134f925a24fb3772d [2019-12-07 11:12:13,244 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 11:12:13,252 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 11:12:13,254 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 11:12:13,255 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 11:12:13,255 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 11:12:13,256 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_569b44f2-581a-44c5-a93a-ae04ca5c04a4/bin/uautomizer/../../sv-benchmarks/c/float-newlib/double_req_bl_1131a.c [2019-12-07 11:12:13,292 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_569b44f2-581a-44c5-a93a-ae04ca5c04a4/bin/uautomizer/data/3591ac55b/9cd79238c39e40bc9083f547141e4ec1/FLAGbc25ef83c [2019-12-07 11:12:13,758 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 11:12:13,758 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_569b44f2-581a-44c5-a93a-ae04ca5c04a4/sv-benchmarks/c/float-newlib/double_req_bl_1131a.c [2019-12-07 11:12:13,763 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_569b44f2-581a-44c5-a93a-ae04ca5c04a4/bin/uautomizer/data/3591ac55b/9cd79238c39e40bc9083f547141e4ec1/FLAGbc25ef83c [2019-12-07 11:12:13,773 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_569b44f2-581a-44c5-a93a-ae04ca5c04a4/bin/uautomizer/data/3591ac55b/9cd79238c39e40bc9083f547141e4ec1 [2019-12-07 11:12:13,775 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 11:12:13,776 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 11:12:13,777 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 11:12:13,777 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 11:12:13,779 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 11:12:13,780 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 11:12:13" (1/1) ... [2019-12-07 11:12:13,781 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@581b80cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:12:13, skipping insertion in model container [2019-12-07 11:12:13,782 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 11:12:13" (1/1) ... [2019-12-07 11:12:13,786 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 11:12:13,804 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 11:12:13,989 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 11:12:13,993 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 11:12:14,026 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 11:12:14,042 INFO L208 MainTranslator]: Completed translation [2019-12-07 11:12:14,042 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:12:14 WrapperNode [2019-12-07 11:12:14,043 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 11:12:14,043 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 11:12:14,043 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 11:12:14,043 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 11:12:14,048 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:12:14" (1/1) ... [2019-12-07 11:12:14,057 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:12:14" (1/1) ... [2019-12-07 11:12:14,078 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 11:12:14,078 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 11:12:14,078 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 11:12:14,078 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 11:12:14,084 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:12:14" (1/1) ... [2019-12-07 11:12:14,084 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:12:14" (1/1) ... [2019-12-07 11:12:14,087 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:12:14" (1/1) ... [2019-12-07 11:12:14,087 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:12:14" (1/1) ... [2019-12-07 11:12:14,096 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:12:14" (1/1) ... [2019-12-07 11:12:14,101 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:12:14" (1/1) ... [2019-12-07 11:12:14,104 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:12:14" (1/1) ... [2019-12-07 11:12:14,106 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 11:12:14,107 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 11:12:14,107 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 11:12:14,107 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 11:12:14,107 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:12:14" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_569b44f2-581a-44c5-a93a-ae04ca5c04a4/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 11:12:14,146 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-12-07 11:12:14,146 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-12-07 11:12:14,146 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2019-12-07 11:12:14,146 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2019-12-07 11:12:14,146 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 11:12:14,146 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 11:12:14,146 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-12-07 11:12:14,146 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2019-12-07 11:12:14,147 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-12-07 11:12:14,439 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 11:12:14,440 INFO L287 CfgBuilder]: Removed 24 assume(true) statements. [2019-12-07 11:12:14,440 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 11:12:14 BoogieIcfgContainer [2019-12-07 11:12:14,441 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 11:12:14,441 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-07 11:12:14,441 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-07 11:12:14,443 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-07 11:12:14,443 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 11:12:13" (1/3) ... [2019-12-07 11:12:14,444 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@357bfabf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 11:12:14, skipping insertion in model container [2019-12-07 11:12:14,444 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:12:14" (2/3) ... [2019-12-07 11:12:14,444 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@357bfabf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 11:12:14, skipping insertion in model container [2019-12-07 11:12:14,444 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 11:12:14" (3/3) ... [2019-12-07 11:12:14,445 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1131a.c [2019-12-07 11:12:14,452 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-07 11:12:14,457 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-12-07 11:12:14,465 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-12-07 11:12:14,484 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-07 11:12:14,484 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-07 11:12:14,484 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-07 11:12:14,484 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 11:12:14,484 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 11:12:14,484 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-07 11:12:14,484 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 11:12:14,484 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-07 11:12:14,495 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states. [2019-12-07 11:12:14,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-12-07 11:12:14,499 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 11:12:14,500 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 11:12:14,500 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 11:12:14,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 11:12:14,503 INFO L82 PathProgramCache]: Analyzing trace with hash 2036387893, now seen corresponding path program 1 times [2019-12-07 11:12:14,509 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 11:12:14,509 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1927608347] [2019-12-07 11:12:14,509 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 11:12:14,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 11:12:14,589 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 11:12:14,590 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1927608347] [2019-12-07 11:12:14,590 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 11:12:14,591 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-07 11:12:14,591 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48388085] [2019-12-07 11:12:14,594 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-12-07 11:12:14,594 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 11:12:14,602 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-12-07 11:12:14,602 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-12-07 11:12:14,604 INFO L87 Difference]: Start difference. First operand 60 states. Second operand 2 states. [2019-12-07 11:12:14,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 11:12:14,619 INFO L93 Difference]: Finished difference Result 118 states and 206 transitions. [2019-12-07 11:12:14,619 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-12-07 11:12:14,620 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 13 [2019-12-07 11:12:14,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 11:12:14,627 INFO L225 Difference]: With dead ends: 118 [2019-12-07 11:12:14,627 INFO L226 Difference]: Without dead ends: 56 [2019-12-07 11:12:14,629 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 11:12:14,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2019-12-07 11:12:14,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2019-12-07 11:12:14,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2019-12-07 11:12:14,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 82 transitions. [2019-12-07 11:12:14,659 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 82 transitions. Word has length 13 [2019-12-07 11:12:14,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 11:12:14,659 INFO L462 AbstractCegarLoop]: Abstraction has 56 states and 82 transitions. [2019-12-07 11:12:14,659 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-12-07 11:12:14,659 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 82 transitions. [2019-12-07 11:12:14,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-12-07 11:12:14,660 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 11:12:14,660 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 11:12:14,660 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 11:12:14,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 11:12:14,661 INFO L82 PathProgramCache]: Analyzing trace with hash -794890891, now seen corresponding path program 1 times [2019-12-07 11:12:14,661 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 11:12:14,661 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1316528587] [2019-12-07 11:12:14,661 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 11:12:14,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 11:12:14,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 11:12:14,795 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 11:12:14,795 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-12-07 11:12:14,822 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 11:12:14 BoogieIcfgContainer [2019-12-07 11:12:14,822 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-07 11:12:14,822 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 11:12:14,822 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 11:12:14,822 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 11:12:14,822 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 11:12:14" (3/4) ... [2019-12-07 11:12:14,825 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-12-07 11:12:14,825 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 11:12:14,827 INFO L168 Benchmark]: Toolchain (without parser) took 1050.44 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 98.6 MB). Free memory was 946.0 MB in the beginning and 1.0 GB in the end (delta: -57.9 MB). Peak memory consumption was 40.7 MB. Max. memory is 11.5 GB. [2019-12-07 11:12:14,827 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 960.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 11:12:14,827 INFO L168 Benchmark]: CACSL2BoogieTranslator took 266.10 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 98.6 MB). Free memory was 946.0 MB in the beginning and 1.1 GB in the end (delta: -142.0 MB). Peak memory consumption was 23.1 MB. Max. memory is 11.5 GB. [2019-12-07 11:12:14,828 INFO L168 Benchmark]: Boogie Procedure Inliner took 34.87 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 11:12:14,828 INFO L168 Benchmark]: Boogie Preprocessor took 28.42 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 11:12:14,828 INFO L168 Benchmark]: RCFGBuilder took 333.98 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: 39.9 MB). Peak memory consumption was 39.9 MB. Max. memory is 11.5 GB. [2019-12-07 11:12:14,829 INFO L168 Benchmark]: TraceAbstraction took 380.46 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: 38.9 MB). Peak memory consumption was 38.9 MB. Max. memory is 11.5 GB. [2019-12-07 11:12:14,829 INFO L168 Benchmark]: Witness Printer took 3.13 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 11:12:14,831 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 960.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 266.10 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 98.6 MB). Free memory was 946.0 MB in the beginning and 1.1 GB in the end (delta: -142.0 MB). Peak memory consumption was 23.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 34.87 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 28.42 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 333.98 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: 39.9 MB). Peak memory consumption was 39.9 MB. Max. memory is 11.5 GB. * TraceAbstraction took 380.46 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: 38.9 MB). Peak memory consumption was 38.9 MB. Max. memory is 11.5 GB. * Witness Printer took 3.13 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: 189]: 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 someBinaryArithmeticDOUBLEoperation at line 45, overapproximation of bitwiseAnd at line 39, overapproximation of someBinaryDOUBLEComparisonOperation at line 188, 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}] [L180] double y = 1.0 / 0.0; [L181] double x = __VERIFIER_nondet_double(); [L164] __int32_t hx; VAL [one_fmod=1, Zero_fmod={3:0}] [L166] ieee_double_shape_type gh_u; [L167] gh_u.value = (x) [L168] EXPR gh_u.parts.msw [L168] (hx) = gh_u.parts.msw [L170] return (int)((__uint32_t)((hx & 0x7fffffff) - 0x7ff00000) >> 31); VAL [one_fmod=1, Zero_fmod={3:0}] [L183] COND TRUE isfinite_double(x) [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}] [L185] double res = fmod_double(x, y); [L188] COND TRUE res != x VAL [one_fmod=1, Zero_fmod={3:0}] [L189] __VERIFIER_error() VAL [one_fmod=1, Zero_fmod={3:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 60 locations, 1 error locations. Result: UNSAFE, OverallTime: 0.3s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 87 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=60occurred 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, 29 NumberOfCodeBlocks, 29 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 12 ConstructedInterpolants, 0 QuantifiedInterpolants, 144 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 11:12:16,168 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 11:12:16,170 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 11:12:16,177 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 11:12:16,178 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 11:12:16,178 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 11:12:16,179 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 11:12:16,181 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 11:12:16,182 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 11:12:16,183 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 11:12:16,183 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 11:12:16,184 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 11:12:16,184 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 11:12:16,185 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 11:12:16,186 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 11:12:16,186 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 11:12:16,187 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 11:12:16,188 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 11:12:16,189 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 11:12:16,190 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 11:12:16,191 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 11:12:16,192 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 11:12:16,193 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 11:12:16,193 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 11:12:16,195 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 11:12:16,196 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 11:12:16,196 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 11:12:16,196 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 11:12:16,197 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 11:12:16,197 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 11:12:16,197 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 11:12:16,198 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 11:12:16,198 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 11:12:16,199 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 11:12:16,200 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 11:12:16,200 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 11:12:16,200 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 11:12:16,200 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 11:12:16,200 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 11:12:16,201 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 11:12:16,202 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 11:12:16,202 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_569b44f2-581a-44c5-a93a-ae04ca5c04a4/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2019-12-07 11:12:16,212 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 11:12:16,212 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 11:12:16,213 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-07 11:12:16,213 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-07 11:12:16,213 INFO L138 SettingsManager]: * Use SBE=true [2019-12-07 11:12:16,213 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 11:12:16,213 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-07 11:12:16,213 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-07 11:12:16,214 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 11:12:16,214 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-07 11:12:16,214 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-07 11:12:16,214 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-07 11:12:16,214 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-12-07 11:12:16,214 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-12-07 11:12:16,214 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-07 11:12:16,215 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 11:12:16,215 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 11:12:16,215 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-07 11:12:16,215 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 11:12:16,215 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-07 11:12:16,215 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-07 11:12:16,215 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-07 11:12:16,215 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 11:12:16,216 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 11:12:16,216 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-07 11:12:16,216 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-07 11:12:16,216 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2019-12-07 11:12:16,216 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-12-07 11:12:16,216 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-07 11:12:16,216 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 11:12:16,216 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-12-07 11:12:16,217 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_569b44f2-581a-44c5-a93a-ae04ca5c04a4/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 -> 9e3ed9850bae7d066050d32134f925a24fb3772d [2019-12-07 11:12:16,376 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 11:12:16,383 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 11:12:16,385 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 11:12:16,386 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 11:12:16,387 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 11:12:16,387 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_569b44f2-581a-44c5-a93a-ae04ca5c04a4/bin/uautomizer/../../sv-benchmarks/c/float-newlib/double_req_bl_1131a.c [2019-12-07 11:12:16,425 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_569b44f2-581a-44c5-a93a-ae04ca5c04a4/bin/uautomizer/data/8fe0a9336/1c7e7c0e3631405284efe349f0ce016b/FLAGd9686dac4 [2019-12-07 11:12:16,887 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 11:12:16,887 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_569b44f2-581a-44c5-a93a-ae04ca5c04a4/sv-benchmarks/c/float-newlib/double_req_bl_1131a.c [2019-12-07 11:12:16,892 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_569b44f2-581a-44c5-a93a-ae04ca5c04a4/bin/uautomizer/data/8fe0a9336/1c7e7c0e3631405284efe349f0ce016b/FLAGd9686dac4 [2019-12-07 11:12:16,901 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_569b44f2-581a-44c5-a93a-ae04ca5c04a4/bin/uautomizer/data/8fe0a9336/1c7e7c0e3631405284efe349f0ce016b [2019-12-07 11:12:16,903 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 11:12:16,904 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 11:12:16,904 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 11:12:16,905 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 11:12:16,907 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 11:12:16,907 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 11:12:16" (1/1) ... [2019-12-07 11:12:16,909 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e05d898 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:12:16, skipping insertion in model container [2019-12-07 11:12:16,909 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 11:12:16" (1/1) ... [2019-12-07 11:12:16,914 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 11:12:16,930 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 11:12:17,063 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 11:12:17,068 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 11:12:17,132 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 11:12:17,150 INFO L208 MainTranslator]: Completed translation [2019-12-07 11:12:17,150 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:12:17 WrapperNode [2019-12-07 11:12:17,150 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 11:12:17,151 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 11:12:17,151 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 11:12:17,151 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 11:12:17,156 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:12:17" (1/1) ... [2019-12-07 11:12:17,166 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:12:17" (1/1) ... [2019-12-07 11:12:17,186 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 11:12:17,186 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 11:12:17,186 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 11:12:17,186 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 11:12:17,192 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:12:17" (1/1) ... [2019-12-07 11:12:17,193 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:12:17" (1/1) ... [2019-12-07 11:12:17,196 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:12:17" (1/1) ... [2019-12-07 11:12:17,196 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:12:17" (1/1) ... [2019-12-07 11:12:17,206 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:12:17" (1/1) ... [2019-12-07 11:12:17,211 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:12:17" (1/1) ... [2019-12-07 11:12:17,213 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:12:17" (1/1) ... [2019-12-07 11:12:17,216 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 11:12:17,217 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 11:12:17,217 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 11:12:17,217 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 11:12:17,217 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:12:17" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_569b44f2-581a-44c5-a93a-ae04ca5c04a4/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 11:12:17,255 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2019-12-07 11:12:17,255 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2019-12-07 11:12:17,255 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-12-07 11:12:17,255 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8 [2019-12-07 11:12:17,255 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2019-12-07 11:12:17,255 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 11:12:17,255 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 11:12:17,255 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2019-12-07 11:12:17,255 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-12-07 11:12:20,566 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 11:12:20,566 INFO L287 CfgBuilder]: Removed 24 assume(true) statements. [2019-12-07 11:12:20,567 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 11:12:20 BoogieIcfgContainer [2019-12-07 11:12:20,567 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 11:12:20,568 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-07 11:12:20,568 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-07 11:12:20,570 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-07 11:12:20,570 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 11:12:16" (1/3) ... [2019-12-07 11:12:20,570 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73cad0cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 11:12:20, skipping insertion in model container [2019-12-07 11:12:20,571 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:12:17" (2/3) ... [2019-12-07 11:12:20,571 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73cad0cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 11:12:20, skipping insertion in model container [2019-12-07 11:12:20,571 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 11:12:20" (3/3) ... [2019-12-07 11:12:20,572 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1131a.c [2019-12-07 11:12:20,578 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-07 11:12:20,583 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-12-07 11:12:20,590 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-12-07 11:12:20,606 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-07 11:12:20,606 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-07 11:12:20,606 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-07 11:12:20,606 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 11:12:20,606 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 11:12:20,606 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-07 11:12:20,606 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 11:12:20,606 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-07 11:12:20,616 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states. [2019-12-07 11:12:20,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-12-07 11:12:20,620 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 11:12:20,621 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 11:12:20,621 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 11:12:20,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 11:12:20,625 INFO L82 PathProgramCache]: Analyzing trace with hash 2036387893, now seen corresponding path program 1 times [2019-12-07 11:12:20,633 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-12-07 11:12:20,633 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1266279885] [2019-12-07 11:12:20,633 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_569b44f2-581a-44c5-a93a-ae04ca5c04a4/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 11:12:21,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 11:12:21,472 INFO L264 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 1 conjunts are in the unsatisfiable core [2019-12-07 11:12:21,476 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 11:12:21,488 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 11:12:21,488 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 11:12:21,491 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 11:12:21,492 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1266279885] [2019-12-07 11:12:21,492 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-12-07 11:12:21,493 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2019-12-07 11:12:21,493 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172224623] [2019-12-07 11:12:21,496 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-12-07 11:12:21,496 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-12-07 11:12:21,505 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-12-07 11:12:21,505 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-12-07 11:12:21,507 INFO L87 Difference]: Start difference. First operand 60 states. Second operand 2 states. [2019-12-07 11:12:21,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 11:12:21,522 INFO L93 Difference]: Finished difference Result 118 states and 206 transitions. [2019-12-07 11:12:21,522 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-12-07 11:12:21,523 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 13 [2019-12-07 11:12:21,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 11:12:21,530 INFO L225 Difference]: With dead ends: 118 [2019-12-07 11:12:21,530 INFO L226 Difference]: Without dead ends: 56 [2019-12-07 11:12:21,532 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-12-07 11:12:21,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2019-12-07 11:12:21,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2019-12-07 11:12:21,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2019-12-07 11:12:21,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 82 transitions. [2019-12-07 11:12:21,557 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 82 transitions. Word has length 13 [2019-12-07 11:12:21,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 11:12:21,557 INFO L462 AbstractCegarLoop]: Abstraction has 56 states and 82 transitions. [2019-12-07 11:12:21,557 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-12-07 11:12:21,557 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 82 transitions. [2019-12-07 11:12:21,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-12-07 11:12:21,558 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 11:12:21,558 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 11:12:21,759 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2019-12-07 11:12:21,760 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 11:12:21,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 11:12:21,760 INFO L82 PathProgramCache]: Analyzing trace with hash -794890891, now seen corresponding path program 1 times [2019-12-07 11:12:21,763 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-12-07 11:12:21,763 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [796744779] [2019-12-07 11:12:21,764 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_569b44f2-581a-44c5-a93a-ae04ca5c04a4/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 11:12:22,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 11:12:24,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 11:12:24,145 INFO L174 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2019-12-07 11:12:24,145 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-12-07 11:12:24,346 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2019-12-07 11:12:24,407 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 11:12:24 BoogieIcfgContainer [2019-12-07 11:12:24,408 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-07 11:12:24,408 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 11:12:24,408 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 11:12:24,408 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 11:12:24,409 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 11:12:20" (3/4) ... [2019-12-07 11:12:24,410 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-12-07 11:12:24,446 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_569b44f2-581a-44c5-a93a-ae04ca5c04a4/bin/uautomizer/witness.graphml [2019-12-07 11:12:24,446 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 11:12:24,448 INFO L168 Benchmark]: Toolchain (without parser) took 7543.72 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 118.0 MB). Free memory was 953.7 MB in the beginning and 993.7 MB in the end (delta: -40.0 MB). Peak memory consumption was 78.0 MB. Max. memory is 11.5 GB. [2019-12-07 11:12:24,448 INFO L168 Benchmark]: CDTParser took 0.14 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 11:12:24,449 INFO L168 Benchmark]: CACSL2BoogieTranslator took 245.98 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 118.0 MB). Free memory was 953.7 MB in the beginning and 1.1 GB in the end (delta: -153.2 MB). Peak memory consumption was 26.2 MB. Max. memory is 11.5 GB. [2019-12-07 11:12:24,449 INFO L168 Benchmark]: Boogie Procedure Inliner took 35.33 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 11:12:24,449 INFO L168 Benchmark]: Boogie Preprocessor took 30.23 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: 6.9 MB). Peak memory consumption was 6.9 MB. Max. memory is 11.5 GB. [2019-12-07 11:12:24,450 INFO L168 Benchmark]: RCFGBuilder took 3350.89 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 47.7 MB). Peak memory consumption was 47.7 MB. Max. memory is 11.5 GB. [2019-12-07 11:12:24,450 INFO L168 Benchmark]: TraceAbstraction took 3839.66 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 993.7 MB in the end (delta: 58.6 MB). Peak memory consumption was 58.6 MB. Max. memory is 11.5 GB. [2019-12-07 11:12:24,451 INFO L168 Benchmark]: Witness Printer took 38.59 ms. Allocated memory is still 1.1 GB. Free memory is still 993.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 11:12:24,453 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 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 245.98 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 118.0 MB). Free memory was 953.7 MB in the beginning and 1.1 GB in the end (delta: -153.2 MB). Peak memory consumption was 26.2 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 35.33 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 30.23 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: 6.9 MB). Peak memory consumption was 6.9 MB. Max. memory is 11.5 GB. * RCFGBuilder took 3350.89 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 47.7 MB). Peak memory consumption was 47.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 3839.66 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 993.7 MB in the end (delta: 58.6 MB). Peak memory consumption was 58.6 MB. Max. memory is 11.5 GB. * Witness Printer took 38.59 ms. Allocated memory is still 1.1 GB. Free memory is still 993.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 189]: 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}] [L180] double y = 1.0 / 0.0; [L181] double x = __VERIFIER_nondet_double(); [L164] __int32_t hx; VAL [one_fmod=1.0, Zero_fmod={2:0}] [L166] ieee_double_shape_type gh_u; [L167] gh_u.value = (x) [L168] EXPR gh_u.parts.msw [L168] (hx) = gh_u.parts.msw [L170] return (int)((__uint32_t)((hx & 0x7fffffff) - 0x7ff00000) >> 31); VAL [one_fmod=1.0, Zero_fmod={2:0}] [L183] COND TRUE isfinite_double(x) [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 TRUE (hy | ly) == 0 || (hx >= 0x7ff00000) || ((hy | ((ly | -ly) >> 31)) > 0x7ff00000) [L45] return (x * y) / (x * y); VAL [one_fmod=1.0, Zero_fmod={2:0}] [L185] double res = fmod_double(x, y); [L188] COND TRUE res != x VAL [one_fmod=1.0, Zero_fmod={2:0}] [L189] __VERIFIER_error() VAL [one_fmod=1.0, Zero_fmod={2:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 60 locations, 1 error locations. Result: UNSAFE, OverallTime: 3.7s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 87 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 24 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=60occurred 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, 1.7s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 29 NumberOfCodeBlocks, 29 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 24 ConstructedInterpolants, 0 QuantifiedInterpolants, 288 SizeOfPredicates, 0 NumberOfNonLiveVariables, 41 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...