./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/float-newlib/double_req_bl_1121b.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9a8b2e8d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/float-newlib/double_req_bl_1121b.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 5ae8278c4ec20358798928b86253d2d04fbb03a1 ......................................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/float-newlib/double_req_bl_1121b.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 5ae8278c4ec20358798928b86253d2d04fbb03a1 ........................................................................................................................................................................................................................................................................................................................................................................... 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 0.1.25-9a8b2e8 [2020-10-20 00:33:00,052 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 00:33:00,055 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 00:33:00,108 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 00:33:00,109 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 00:33:00,110 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 00:33:00,111 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 00:33:00,113 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 00:33:00,115 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 00:33:00,116 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 00:33:00,117 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 00:33:00,118 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 00:33:00,118 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 00:33:00,119 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 00:33:00,120 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 00:33:00,121 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 00:33:00,122 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 00:33:00,123 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 00:33:00,125 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 00:33:00,126 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 00:33:00,128 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 00:33:00,129 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 00:33:00,130 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 00:33:00,131 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 00:33:00,133 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 00:33:00,134 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 00:33:00,134 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 00:33:00,135 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 00:33:00,135 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 00:33:00,136 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 00:33:00,136 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 00:33:00,137 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 00:33:00,138 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 00:33:00,139 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 00:33:00,140 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 00:33:00,140 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 00:33:00,140 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 00:33:00,141 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 00:33:00,141 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 00:33:00,142 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 00:33:00,142 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 00:33:00,143 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-20 00:33:00,165 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 00:33:00,165 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 00:33:00,167 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 00:33:00,167 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 00:33:00,167 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 00:33:00,167 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 00:33:00,168 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-20 00:33:00,168 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-20 00:33:00,168 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-20 00:33:00,168 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 00:33:00,168 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-20 00:33:00,168 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-20 00:33:00,169 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-20 00:33:00,169 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-20 00:33:00,169 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-20 00:33:00,169 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 00:33:00,169 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-20 00:33:00,170 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 00:33:00,170 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 00:33:00,170 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-20 00:33:00,170 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-20 00:33:00,170 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 00:33:00,171 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 00:33:00,171 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-20 00:33:00,171 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-20 00:33:00,171 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-20 00:33:00,171 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-20 00:33:00,171 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-20 00:33:00,172 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 00:33:00,172 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 -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux 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(reach_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 -> 5ae8278c4ec20358798928b86253d2d04fbb03a1 [2020-10-20 00:33:00,396 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 00:33:00,409 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 00:33:00,413 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 00:33:00,415 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 00:33:00,416 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 00:33:00,417 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/double_req_bl_1121b.c [2020-10-20 00:33:00,498 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/12802b3e0/48c9c82d46cd450e8676cd0e8b864574/FLAG4f2d2b67e [2020-10-20 00:33:00,946 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 00:33:00,947 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_1121b.c [2020-10-20 00:33:00,956 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/12802b3e0/48c9c82d46cd450e8676cd0e8b864574/FLAG4f2d2b67e [2020-10-20 00:33:01,313 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/12802b3e0/48c9c82d46cd450e8676cd0e8b864574 [2020-10-20 00:33:01,317 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 00:33:01,323 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-20 00:33:01,324 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 00:33:01,324 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 00:33:01,328 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 00:33:01,329 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 12:33:01" (1/1) ... [2020-10-20 00:33:01,332 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@12496374 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:33:01, skipping insertion in model container [2020-10-20 00:33:01,333 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 12:33:01" (1/1) ... [2020-10-20 00:33:01,340 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 00:33:01,383 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 00:33:01,684 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 00:33:01,694 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 00:33:01,758 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 00:33:01,789 INFO L208 MainTranslator]: Completed translation [2020-10-20 00:33:01,790 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:33:01 WrapperNode [2020-10-20 00:33:01,790 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 00:33:01,791 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-20 00:33:01,791 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-20 00:33:01,791 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-20 00:33:01,800 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:33:01" (1/1) ... [2020-10-20 00:33:01,829 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:33:01" (1/1) ... [2020-10-20 00:33:01,882 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-20 00:33:01,882 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 00:33:01,882 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 00:33:01,883 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 00:33:01,892 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:33:01" (1/1) ... [2020-10-20 00:33:01,893 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:33:01" (1/1) ... [2020-10-20 00:33:01,910 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:33:01" (1/1) ... [2020-10-20 00:33:01,913 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:33:01" (1/1) ... [2020-10-20 00:33:01,939 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:33:01" (1/1) ... [2020-10-20 00:33:01,959 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:33:01" (1/1) ... [2020-10-20 00:33:01,964 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:33:01" (1/1) ... [2020-10-20 00:33:01,968 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 00:33:01,969 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 00:33:01,969 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 00:33:01,969 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 00:33:01,970 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:33:01" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2020-10-20 00:33:02,038 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-20 00:33:02,038 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-20 00:33:02,038 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-20 00:33:02,038 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-20 00:33:02,038 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-20 00:33:02,039 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 00:33:02,039 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 00:33:02,039 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-20 00:33:02,039 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-10-20 00:33:02,039 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-20 00:33:02,596 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 00:33:02,596 INFO L298 CfgBuilder]: Removed 24 assume(true) statements. [2020-10-20 00:33:02,598 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:33:02 BoogieIcfgContainer [2020-10-20 00:33:02,599 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 00:33:02,600 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-20 00:33:02,600 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-20 00:33:02,603 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-20 00:33:02,604 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 12:33:01" (1/3) ... [2020-10-20 00:33:02,604 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@207bc4fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 12:33:02, skipping insertion in model container [2020-10-20 00:33:02,605 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:33:01" (2/3) ... [2020-10-20 00:33:02,605 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@207bc4fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 12:33:02, skipping insertion in model container [2020-10-20 00:33:02,605 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:33:02" (3/3) ... [2020-10-20 00:33:02,607 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1121b.c [2020-10-20 00:33:02,619 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-20 00:33:02,626 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-20 00:33:02,639 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-20 00:33:02,665 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-20 00:33:02,665 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-20 00:33:02,665 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-20 00:33:02,666 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 00:33:02,666 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 00:33:02,666 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-20 00:33:02,666 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 00:33:02,667 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-20 00:33:02,683 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states. [2020-10-20 00:33:02,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-20 00:33:02,689 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:33:02,689 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 00:33:02,690 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:33:02,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:33:02,696 INFO L82 PathProgramCache]: Analyzing trace with hash 668833300, now seen corresponding path program 1 times [2020-10-20 00:33:02,706 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 00:33:02,707 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1009203976] [2020-10-20 00:33:02,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 00:33:02,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 00:33:02,862 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 00:33:02,863 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1009203976] [2020-10-20 00:33:02,864 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 00:33:02,864 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-20 00:33:02,865 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121617719] [2020-10-20 00:33:02,870 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-20 00:33:02,871 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 00:33:02,884 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-20 00:33:02,885 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-20 00:33:02,887 INFO L87 Difference]: Start difference. First operand 56 states. Second operand 2 states. [2020-10-20 00:33:02,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 00:33:02,913 INFO L93 Difference]: Finished difference Result 109 states and 191 transitions. [2020-10-20 00:33:02,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-20 00:33:02,915 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-10-20 00:33:02,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 00:33:02,927 INFO L225 Difference]: With dead ends: 109 [2020-10-20 00:33:02,927 INFO L226 Difference]: Without dead ends: 52 [2020-10-20 00:33:02,931 INFO L677 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 [2020-10-20 00:33:02,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-10-20 00:33:02,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2020-10-20 00:33:02,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-10-20 00:33:02,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 78 transitions. [2020-10-20 00:33:02,970 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 78 transitions. Word has length 10 [2020-10-20 00:33:02,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 00:33:02,970 INFO L481 AbstractCegarLoop]: Abstraction has 52 states and 78 transitions. [2020-10-20 00:33:02,970 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-20 00:33:02,970 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 78 transitions. [2020-10-20 00:33:02,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-20 00:33:02,971 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:33:02,971 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 00:33:02,972 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-20 00:33:02,972 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:33:02,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:33:02,972 INFO L82 PathProgramCache]: Analyzing trace with hash 133394385, now seen corresponding path program 1 times [2020-10-20 00:33:02,973 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 00:33:02,973 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [393409753] [2020-10-20 00:33:02,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 00:33:03,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 00:33:03,063 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 00:33:03,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 00:33:03,149 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 00:33:03,207 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 00:33:03,207 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-20 00:33:03,209 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-20 00:33:03,282 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 12:33:03 BoogieIcfgContainer [2020-10-20 00:33:03,287 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-20 00:33:03,288 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 00:33:03,288 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 00:33:03,288 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 00:33:03,289 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:33:02" (3/4) ... [2020-10-20 00:33:03,295 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-10-20 00:33:03,295 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 00:33:03,298 INFO L168 Benchmark]: Toolchain (without parser) took 1979.02 ms. Allocated memory was 34.1 MB in the beginning and 46.7 MB in the end (delta: 12.6 MB). Free memory was 9.1 MB in the beginning and 22.0 MB in the end (delta: -12.9 MB). There was no memory consumed. Max. memory is 14.3 GB. [2020-10-20 00:33:03,301 INFO L168 Benchmark]: CDTParser took 0.37 ms. Allocated memory is still 32.5 MB. Free memory was 16.0 MB in the beginning and 16.0 MB in the end (delta: 38.3 kB). Peak memory consumption was 38.3 kB. Max. memory is 14.3 GB. [2020-10-20 00:33:03,302 INFO L168 Benchmark]: CACSL2BoogieTranslator took 466.24 ms. Allocated memory was 34.1 MB in the beginning and 43.5 MB in the end (delta: 9.4 MB). Free memory was 8.3 MB in the beginning and 21.0 MB in the end (delta: -12.7 MB). Peak memory consumption was 6.9 MB. Max. memory is 14.3 GB. [2020-10-20 00:33:03,303 INFO L168 Benchmark]: Boogie Procedure Inliner took 91.02 ms. Allocated memory is still 43.5 MB. Free memory was 20.9 MB in the beginning and 18.2 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 14.3 GB. [2020-10-20 00:33:03,304 INFO L168 Benchmark]: Boogie Preprocessor took 85.97 ms. Allocated memory is still 43.5 MB. Free memory was 18.2 MB in the beginning and 25.9 MB in the end (delta: -7.7 MB). Peak memory consumption was 5.1 MB. Max. memory is 14.3 GB. [2020-10-20 00:33:03,306 INFO L168 Benchmark]: RCFGBuilder took 630.13 ms. Allocated memory was 43.5 MB in the beginning and 45.1 MB in the end (delta: 1.6 MB). Free memory was 25.7 MB in the beginning and 23.1 MB in the end (delta: 2.7 MB). Peak memory consumption was 15.4 MB. Max. memory is 14.3 GB. [2020-10-20 00:33:03,307 INFO L168 Benchmark]: TraceAbstraction took 687.69 ms. Allocated memory was 45.1 MB in the beginning and 46.7 MB in the end (delta: 1.6 MB). Free memory was 22.6 MB in the beginning and 22.3 MB in the end (delta: 233.5 kB). Peak memory consumption was 14.5 MB. Max. memory is 14.3 GB. [2020-10-20 00:33:03,313 INFO L168 Benchmark]: Witness Printer took 7.50 ms. Allocated memory is still 46.7 MB. Free memory was 22.3 MB in the beginning and 22.0 MB in the end (delta: 316.7 kB). Peak memory consumption was 316.7 kB. Max. memory is 14.3 GB. [2020-10-20 00:33:03,328 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.37 ms. Allocated memory is still 32.5 MB. Free memory was 16.0 MB in the beginning and 16.0 MB in the end (delta: 38.3 kB). Peak memory consumption was 38.3 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 466.24 ms. Allocated memory was 34.1 MB in the beginning and 43.5 MB in the end (delta: 9.4 MB). Free memory was 8.3 MB in the beginning and 21.0 MB in the end (delta: -12.7 MB). Peak memory consumption was 6.9 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 91.02 ms. Allocated memory is still 43.5 MB. Free memory was 20.9 MB in the beginning and 18.2 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 85.97 ms. Allocated memory is still 43.5 MB. Free memory was 18.2 MB in the beginning and 25.9 MB in the end (delta: -7.7 MB). Peak memory consumption was 5.1 MB. Max. memory is 14.3 GB. * RCFGBuilder took 630.13 ms. Allocated memory was 43.5 MB in the beginning and 45.1 MB in the end (delta: 1.6 MB). Free memory was 25.7 MB in the beginning and 23.1 MB in the end (delta: 2.7 MB). Peak memory consumption was 15.4 MB. Max. memory is 14.3 GB. * TraceAbstraction took 687.69 ms. Allocated memory was 45.1 MB in the beginning and 46.7 MB in the end (delta: 1.6 MB). Free memory was 22.6 MB in the beginning and 22.3 MB in the end (delta: 233.5 kB). Peak memory consumption was 14.5 MB. Max. memory is 14.3 GB. * Witness Printer took 7.50 ms. Allocated memory is still 46.7 MB. Free memory was 22.3 MB in the beginning and 22.0 MB in the end (delta: 316.7 kB). Peak memory consumption was 316.7 kB. Max. memory is 14.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 3]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of bitwiseOr at line 46, overapproximation of someUnaryDOUBLEoperation at line 172, overapproximation of bitwiseAnd at line 41, overapproximation of someBinaryArithmeticDOUBLEoperation at line 47, overapproximation of someBinaryDOUBLEComparisonOperation at line 18, overapproximation of bitwiseXor at line 42. Possible FailurePath: [L20-L23] static const double one_fmod = 1.0, Zero_fmod[] = { 0.0, -0.0, }; VAL [one_fmod=1, Zero_fmod={9:0}] [L171] double x = __VERIFIER_nondet_double(); [L172] double y = -0.0; [L26] __int32_t n, hx, hy, hz, ix, iy, sx, i; [L27] __uint32_t lx, ly, lz; VAL [one_fmod=1, Zero_fmod={9:0}] [L30] ieee_double_shape_type ew_u; [L31] ew_u.value = (x) [L32] EXPR ew_u.parts.msw [L32] (hx) = ew_u.parts.msw [L33] EXPR ew_u.parts.lsw [L33] (lx) = ew_u.parts.lsw [L36] ieee_double_shape_type ew_u; [L37] ew_u.value = (y) [L38] EXPR ew_u.parts.msw [L38] (hy) = ew_u.parts.msw [L39] EXPR ew_u.parts.lsw [L39] (ly) = ew_u.parts.lsw [L41] sx = hx & 0x80000000 [L42] hx ^= sx [L43] hy &= 0x7fffffff VAL [one_fmod=1, Zero_fmod={9:0}] [L45-L46] COND TRUE (hy | ly) == 0 || (hx >= 0x7ff00000) || ((hy | ((ly | -ly) >> 31)) > 0x7ff00000) [L47] return (x * y) / (x * y); VAL [one_fmod=1, Zero_fmod={9:0}] [L173] double res = fmod_double(x, y); [L18] return x != x; VAL [one_fmod=1, Zero_fmod={9:0}] [L176] COND TRUE !isnan_double(res) [L3] __assert_fail("0", "double_req_bl_1121b.c", 3, "reach_error") VAL [one_fmod=1, Zero_fmod={9:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 56 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.5s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 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=56occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 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, ACCELERATED_INTERPOLATION: 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 0.1.25-9a8b2e8 [2020-10-20 00:33:05,464 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 00:33:05,467 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 00:33:05,498 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 00:33:05,499 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 00:33:05,508 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 00:33:05,510 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 00:33:05,514 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 00:33:05,523 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 00:33:05,526 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 00:33:05,527 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 00:33:05,529 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 00:33:05,529 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 00:33:05,532 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 00:33:05,533 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 00:33:05,534 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 00:33:05,536 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 00:33:05,537 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 00:33:05,539 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 00:33:05,545 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 00:33:05,547 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 00:33:05,549 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 00:33:05,551 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 00:33:05,552 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 00:33:05,561 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 00:33:05,563 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 00:33:05,563 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 00:33:05,564 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 00:33:05,566 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 00:33:05,567 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 00:33:05,567 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 00:33:05,568 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 00:33:05,569 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 00:33:05,570 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 00:33:05,570 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 00:33:05,571 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 00:33:05,572 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 00:33:05,572 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 00:33:05,572 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 00:33:05,573 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 00:33:05,574 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 00:33:05,575 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-10-20 00:33:05,618 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 00:33:05,618 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 00:33:05,620 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 00:33:05,620 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 00:33:05,620 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 00:33:05,621 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 00:33:05,621 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-20 00:33:05,621 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-20 00:33:05,621 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 00:33:05,622 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-20 00:33:05,624 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-20 00:33:05,624 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-20 00:33:05,624 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-10-20 00:33:05,624 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-10-20 00:33:05,625 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-20 00:33:05,625 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-20 00:33:05,625 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 00:33:05,625 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-20 00:33:05,625 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 00:33:05,625 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 00:33:05,626 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-20 00:33:05,626 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-20 00:33:05,626 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 00:33:05,626 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 00:33:05,626 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-20 00:33:05,626 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-20 00:33:05,626 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-10-20 00:33:05,627 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-10-20 00:33:05,627 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-20 00:33:05,630 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 00:33:05,630 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-20 00:33:05,630 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 -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux 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(reach_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 -> 5ae8278c4ec20358798928b86253d2d04fbb03a1 [2020-10-20 00:33:05,820 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 00:33:05,838 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 00:33:05,841 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 00:33:05,843 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 00:33:05,843 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 00:33:05,844 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/double_req_bl_1121b.c [2020-10-20 00:33:05,903 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ecdf52895/88afd986c8ae4a979bc7f057de212d8f/FLAG494d61a78 [2020-10-20 00:33:06,371 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 00:33:06,371 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_1121b.c [2020-10-20 00:33:06,380 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ecdf52895/88afd986c8ae4a979bc7f057de212d8f/FLAG494d61a78 [2020-10-20 00:33:06,756 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ecdf52895/88afd986c8ae4a979bc7f057de212d8f [2020-10-20 00:33:06,759 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 00:33:06,766 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-20 00:33:06,767 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 00:33:06,767 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 00:33:06,771 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 00:33:06,772 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 12:33:06" (1/1) ... [2020-10-20 00:33:06,775 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@67f4e577 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:33:06, skipping insertion in model container [2020-10-20 00:33:06,775 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 12:33:06" (1/1) ... [2020-10-20 00:33:06,783 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 00:33:06,829 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 00:33:07,299 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 00:33:07,318 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 00:33:07,365 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 00:33:07,394 INFO L208 MainTranslator]: Completed translation [2020-10-20 00:33:07,394 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:33:07 WrapperNode [2020-10-20 00:33:07,395 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 00:33:07,395 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-20 00:33:07,395 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-20 00:33:07,396 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-20 00:33:07,405 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:33:07" (1/1) ... [2020-10-20 00:33:07,421 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:33:07" (1/1) ... [2020-10-20 00:33:07,455 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-20 00:33:07,455 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 00:33:07,456 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 00:33:07,456 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 00:33:07,469 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:33:07" (1/1) ... [2020-10-20 00:33:07,469 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:33:07" (1/1) ... [2020-10-20 00:33:07,479 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:33:07" (1/1) ... [2020-10-20 00:33:07,479 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:33:07" (1/1) ... [2020-10-20 00:33:07,504 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:33:07" (1/1) ... [2020-10-20 00:33:07,512 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:33:07" (1/1) ... [2020-10-20 00:33:07,515 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:33:07" (1/1) ... [2020-10-20 00:33:07,521 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 00:33:07,522 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 00:33:07,522 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 00:33:07,522 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 00:33:07,523 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:33:07" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2020-10-20 00:33:07,592 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2020-10-20 00:33:07,592 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2020-10-20 00:33:07,592 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-10-20 00:33:07,592 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-20 00:33:07,592 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8 [2020-10-20 00:33:07,592 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-10-20 00:33:07,593 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 00:33:07,593 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 00:33:07,593 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2020-10-20 00:33:07,593 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-20 00:33:11,350 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 00:33:11,351 INFO L298 CfgBuilder]: Removed 24 assume(true) statements. [2020-10-20 00:33:11,352 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:33:11 BoogieIcfgContainer [2020-10-20 00:33:11,353 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 00:33:11,354 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-20 00:33:11,354 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-20 00:33:11,357 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-20 00:33:11,358 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 12:33:06" (1/3) ... [2020-10-20 00:33:11,358 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ffe0c55 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 12:33:11, skipping insertion in model container [2020-10-20 00:33:11,359 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:33:07" (2/3) ... [2020-10-20 00:33:11,359 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ffe0c55 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 12:33:11, skipping insertion in model container [2020-10-20 00:33:11,359 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:33:11" (3/3) ... [2020-10-20 00:33:11,361 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1121b.c [2020-10-20 00:33:11,372 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-20 00:33:11,380 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-20 00:33:11,393 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-20 00:33:11,415 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-20 00:33:11,415 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-20 00:33:11,415 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-20 00:33:11,416 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 00:33:11,416 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 00:33:11,416 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-20 00:33:11,416 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 00:33:11,416 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-20 00:33:11,430 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states. [2020-10-20 00:33:11,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-20 00:33:11,435 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:33:11,436 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 00:33:11,437 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:33:11,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:33:11,441 INFO L82 PathProgramCache]: Analyzing trace with hash 668833300, now seen corresponding path program 1 times [2020-10-20 00:33:11,451 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 00:33:11,452 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [430297875] [2020-10-20 00:33:11,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2020-10-20 00:33:12,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 00:33:12,485 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 1 conjunts are in the unsatisfiable core [2020-10-20 00:33:12,490 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 00:33:12,505 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 00:33:12,505 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-20 00:33:12,509 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 00:33:12,511 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [430297875] [2020-10-20 00:33:12,513 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-20 00:33:12,513 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-10-20 00:33:12,515 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547556760] [2020-10-20 00:33:12,521 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-20 00:33:12,522 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-20 00:33:12,532 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-20 00:33:12,533 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-20 00:33:12,535 INFO L87 Difference]: Start difference. First operand 56 states. Second operand 2 states. [2020-10-20 00:33:12,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 00:33:12,557 INFO L93 Difference]: Finished difference Result 109 states and 191 transitions. [2020-10-20 00:33:12,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-20 00:33:12,558 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-10-20 00:33:12,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 00:33:12,568 INFO L225 Difference]: With dead ends: 109 [2020-10-20 00:33:12,569 INFO L226 Difference]: Without dead ends: 52 [2020-10-20 00:33:12,572 INFO L677 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 [2020-10-20 00:33:12,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-10-20 00:33:12,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2020-10-20 00:33:12,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-10-20 00:33:12,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 78 transitions. [2020-10-20 00:33:12,611 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 78 transitions. Word has length 10 [2020-10-20 00:33:12,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 00:33:12,612 INFO L481 AbstractCegarLoop]: Abstraction has 52 states and 78 transitions. [2020-10-20 00:33:12,612 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-20 00:33:12,612 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 78 transitions. [2020-10-20 00:33:12,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-20 00:33:12,613 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:33:12,613 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 00:33:12,814 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-10-20 00:33:12,814 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:33:12,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:33:12,815 INFO L82 PathProgramCache]: Analyzing trace with hash 133394385, now seen corresponding path program 1 times [2020-10-20 00:33:12,817 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 00:33:12,817 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1196426963] [2020-10-20 00:33:12,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2020-10-20 00:33:14,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 00:33:14,093 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-20 00:33:14,095 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 00:33:29,373 WARN L193 SmtUtils]: Spent 2.78 s on a formula simplification that was a NOOP. DAG size: 9 [2020-10-20 00:33:39,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 00:33:39,987 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-20 00:33:51,740 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 [2020-10-20 00:33:54,691 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 00:33:54,691 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1196426963] [2020-10-20 00:33:54,692 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-20 00:33:54,692 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 11 [2020-10-20 00:33:54,692 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682860061] [2020-10-20 00:33:54,694 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-20 00:33:54,694 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-20 00:33:54,695 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-20 00:33:54,696 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=64, Unknown=6, NotChecked=16, Total=110 [2020-10-20 00:33:54,696 INFO L87 Difference]: Start difference. First operand 52 states and 78 transitions. Second operand 11 states. [2020-10-20 00:34:00,155 WARN L860 $PredicateComparison]: unable to prove that (and (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)))) (= c_currentRoundingMode roundNearestTiesToEven) (= c_ULTIMATE.start_fmod_double_~y (fp.neg (_ +zero 11 53)))) is different from true [2020-10-20 00:34:08,818 WARN L838 $PredicateComparison]: unable to prove that (and (exists ((ULTIMATE.start_fmod_double_~x (_ FloatingPoint 11 53))) (= |c_ULTIMATE.start_fmod_double_#res| (let ((.cse0 (fp.mul roundNearestTiesToEven ULTIMATE.start_fmod_double_~x (fp.neg (_ +zero 11 53))))) (fp.div roundNearestTiesToEven .cse0 .cse0)))) (not (fp.eq |c_ULTIMATE.start_fmod_double_#res| |c_ULTIMATE.start_fmod_double_#res|)) (= (_ bv1 32) |c_ULTIMATE.start_isnan_double_#res|)) is different from false [2020-10-20 00:34:24,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 00:34:24,568 INFO L93 Difference]: Finished difference Result 57 states and 82 transitions. [2020-10-20 00:34:24,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-20 00:34:24,610 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 12 [2020-10-20 00:34:24,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 00:34:24,612 INFO L225 Difference]: With dead ends: 57 [2020-10-20 00:34:24,612 INFO L226 Difference]: Without dead ends: 52 [2020-10-20 00:34:24,613 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 13 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 3 IntricatePredicates, 1 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 50.1s TimeCoverageRelationStatistics Valid=28, Invalid=66, Unknown=8, NotChecked=54, Total=156 [2020-10-20 00:34:24,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-10-20 00:34:24,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2020-10-20 00:34:24,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-10-20 00:34:24,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 77 transitions. [2020-10-20 00:34:24,622 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 77 transitions. Word has length 12 [2020-10-20 00:34:24,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 00:34:24,622 INFO L481 AbstractCegarLoop]: Abstraction has 52 states and 77 transitions. [2020-10-20 00:34:24,622 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-20 00:34:24,623 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 77 transitions. [2020-10-20 00:34:24,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-20 00:34:24,624 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:34:24,624 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 00:34:24,824 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-10-20 00:34:24,825 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:34:24,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:34:24,826 INFO L82 PathProgramCache]: Analyzing trace with hash -910533226, now seen corresponding path program 1 times [2020-10-20 00:34:24,827 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 00:34:24,828 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2084682181] [2020-10-20 00:34:24,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2020-10-20 00:34:25,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 00:34:25,145 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 00:34:25,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 00:34:25,364 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 00:34:25,427 INFO L173 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2020-10-20 00:34:25,428 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-20 00:34:25,628 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-10-20 00:34:25,677 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 12:34:25 BoogieIcfgContainer [2020-10-20 00:34:25,677 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-20 00:34:25,677 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 00:34:25,677 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 00:34:25,678 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 00:34:25,678 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:33:11" (3/4) ... [2020-10-20 00:34:25,680 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-10-20 00:34:25,743 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-20 00:34:25,743 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 00:34:25,745 INFO L168 Benchmark]: Toolchain (without parser) took 78984.22 ms. Allocated memory was 35.1 MB in the beginning and 49.8 MB in the end (delta: 14.7 MB). Free memory was 12.3 MB in the beginning and 11.6 MB in the end (delta: 657.7 kB). Peak memory consumption was 15.3 MB. Max. memory is 14.3 GB. [2020-10-20 00:34:25,746 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 33.6 MB. Free memory was 18.8 MB in the beginning and 18.8 MB in the end (delta: 31.1 kB). Peak memory consumption was 31.1 kB. Max. memory is 14.3 GB. [2020-10-20 00:34:25,746 INFO L168 Benchmark]: CACSL2BoogieTranslator took 627.98 ms. Allocated memory was 35.1 MB in the beginning and 44.0 MB in the end (delta: 8.9 MB). Free memory was 11.4 MB in the beginning and 19.1 MB in the end (delta: -7.7 MB). Peak memory consumption was 10.6 MB. Max. memory is 14.3 GB. [2020-10-20 00:34:25,747 INFO L168 Benchmark]: Boogie Procedure Inliner took 59.88 ms. Allocated memory is still 44.0 MB. Free memory was 19.1 MB in the beginning and 16.5 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 14.3 GB. [2020-10-20 00:34:25,748 INFO L168 Benchmark]: Boogie Preprocessor took 65.58 ms. Allocated memory was 44.0 MB in the beginning and 45.1 MB in the end (delta: 1.0 MB). Free memory was 16.5 MB in the beginning and 25.2 MB in the end (delta: -8.7 MB). Peak memory consumption was 4.9 MB. Max. memory is 14.3 GB. [2020-10-20 00:34:25,748 INFO L168 Benchmark]: RCFGBuilder took 3831.27 ms. Allocated memory was 45.1 MB in the beginning and 46.1 MB in the end (delta: 1.0 MB). Free memory was 24.9 MB in the beginning and 22.5 MB in the end (delta: 2.4 MB). Peak memory consumption was 15.2 MB. Max. memory is 14.3 GB. [2020-10-20 00:34:25,749 INFO L168 Benchmark]: TraceAbstraction took 74323.18 ms. Allocated memory was 46.1 MB in the beginning and 49.8 MB in the end (delta: 3.7 MB). Free memory was 21.9 MB in the beginning and 14.5 MB in the end (delta: 7.4 MB). Peak memory consumption was 11.0 MB. Max. memory is 14.3 GB. [2020-10-20 00:34:25,750 INFO L168 Benchmark]: Witness Printer took 65.65 ms. Allocated memory is still 49.8 MB. Free memory was 14.5 MB in the beginning and 11.6 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.9 MB. Max. memory is 14.3 GB. [2020-10-20 00:34:25,754 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 33.6 MB. Free memory was 18.8 MB in the beginning and 18.8 MB in the end (delta: 31.1 kB). Peak memory consumption was 31.1 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 627.98 ms. Allocated memory was 35.1 MB in the beginning and 44.0 MB in the end (delta: 8.9 MB). Free memory was 11.4 MB in the beginning and 19.1 MB in the end (delta: -7.7 MB). Peak memory consumption was 10.6 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 59.88 ms. Allocated memory is still 44.0 MB. Free memory was 19.1 MB in the beginning and 16.5 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 65.58 ms. Allocated memory was 44.0 MB in the beginning and 45.1 MB in the end (delta: 1.0 MB). Free memory was 16.5 MB in the beginning and 25.2 MB in the end (delta: -8.7 MB). Peak memory consumption was 4.9 MB. Max. memory is 14.3 GB. * RCFGBuilder took 3831.27 ms. Allocated memory was 45.1 MB in the beginning and 46.1 MB in the end (delta: 1.0 MB). Free memory was 24.9 MB in the beginning and 22.5 MB in the end (delta: 2.4 MB). Peak memory consumption was 15.2 MB. Max. memory is 14.3 GB. * TraceAbstraction took 74323.18 ms. Allocated memory was 46.1 MB in the beginning and 49.8 MB in the end (delta: 3.7 MB). Free memory was 21.9 MB in the beginning and 14.5 MB in the end (delta: 7.4 MB). Peak memory consumption was 11.0 MB. Max. memory is 14.3 GB. * Witness Printer took 65.65 ms. Allocated memory is still 49.8 MB. Free memory was 14.5 MB in the beginning and 11.6 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.9 MB. Max. memory is 14.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 3]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L20-L23] static const double one_fmod = 1.0, Zero_fmod[] = { 0.0, -0.0, }; VAL [one_fmod=1.0, Zero_fmod={2:0}] [L171] double x = __VERIFIER_nondet_double(); [L172] double y = -0.0; [L26] __int32_t n, hx, hy, hz, ix, iy, sx, i; [L27] __uint32_t lx, ly, lz; VAL [one_fmod=1.0, Zero_fmod={2:0}] [L30] ieee_double_shape_type ew_u; [L31] ew_u.value = (x) [L32] EXPR ew_u.parts.msw [L32] (hx) = ew_u.parts.msw [L33] EXPR ew_u.parts.lsw [L33] (lx) = ew_u.parts.lsw [L36] ieee_double_shape_type ew_u; [L37] ew_u.value = (y) [L38] EXPR ew_u.parts.msw [L38] (hy) = ew_u.parts.msw [L39] EXPR ew_u.parts.lsw [L39] (ly) = ew_u.parts.lsw [L41] sx = hx & 0x80000000 [L42] hx ^= sx [L43] hy &= 0x7fffffff VAL [one_fmod=1.0, Zero_fmod={2:0}] [L45-L46] COND FALSE !((hy | ly) == 0 || (hx >= 0x7ff00000) || ((hy | ((ly | -ly) >> 31)) > 0x7ff00000)) VAL [one_fmod=1.0, Zero_fmod={2:0}] [L48] COND TRUE hx <= hy VAL [one_fmod=1.0, Zero_fmod={2:0}] [L49] COND TRUE (hx < hy) || (lx < ly) [L50] return x; VAL [one_fmod=1.0, Zero_fmod={2:0}] [L173] double res = fmod_double(x, y); [L18] return x != x; VAL [one_fmod=1.0, Zero_fmod={2:0}] [L176] COND TRUE !isnan_double(res) [L3] __assert_fail("0", "double_req_bl_1121b.c", 3, "reach_error") VAL [one_fmod=1.0, Zero_fmod={2:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 56 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 74.2s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 29.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 156 SDtfs, 2 SDslu, 336 SDs, 0 SdLazy, 14 SolverSat, 0 SolverUnsat, 6 SolverUnknown, 0 SolverNotchecked, 17.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 44 GetRequests, 31 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 3 IntricatePredicates, 1 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 50.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=56occurred 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, 2.3s SatisfiabilityAnalysisTime, 40.7s InterpolantComputationTime, 36 NumberOfCodeBlocks, 36 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 40 ConstructedInterpolants, 7 QuantifiedInterpolants, 2637 SizeOfPredicates, 11 NumberOfNonLiveVariables, 132 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, ACCELERATED_INTERPOLATION: 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...