./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/float-newlib/double_req_bl_0910b.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_0910b.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 c07e352bcbba2d31c9106eacdc6e86cfa9e8af72 ................................................................................................................................................................................................................................................................................................................... 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_0910b.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 c07e352bcbba2d31c9106eacdc6e86cfa9e8af72 ................................................................................................................................................................................................................................................................................................................................ 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 00:30:52,293 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 00:30:52,295 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 00:30:52,320 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 00:30:52,320 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 00:30:52,321 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 00:30:52,322 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 00:30:52,324 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 00:30:52,326 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 00:30:52,327 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 00:30:52,328 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 00:30:52,329 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 00:30:52,329 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 00:30:52,331 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 00:30:52,332 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 00:30:52,333 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 00:30:52,334 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 00:30:52,335 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 00:30:52,336 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 00:30:52,338 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 00:30:52,343 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 00:30:52,344 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 00:30:52,345 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 00:30:52,350 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 00:30:52,352 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 00:30:52,352 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 00:30:52,352 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 00:30:52,357 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 00:30:52,358 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 00:30:52,360 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 00:30:52,360 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 00:30:52,361 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 00:30:52,361 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 00:30:52,362 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 00:30:52,364 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 00:30:52,364 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 00:30:52,371 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 00:30:52,372 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 00:30:52,372 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 00:30:52,373 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 00:30:52,373 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 00:30:52,376 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-20 00:30:52,419 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 00:30:52,420 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 00:30:52,421 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 00:30:52,421 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 00:30:52,422 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 00:30:52,422 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 00:30:52,422 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-20 00:30:52,422 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-20 00:30:52,423 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-20 00:30:52,423 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 00:30:52,423 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-20 00:30:52,423 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-20 00:30:52,424 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-20 00:30:52,424 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-20 00:30:52,424 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-20 00:30:52,424 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 00:30:52,425 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-20 00:30:52,425 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 00:30:52,425 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 00:30:52,425 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-20 00:30:52,426 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-20 00:30:52,426 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 00:30:52,426 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 00:30:52,426 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-20 00:30:52,427 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-20 00:30:52,427 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-20 00:30:52,427 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-20 00:30:52,427 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-20 00:30:52,428 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 00:30:52,428 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 -> c07e352bcbba2d31c9106eacdc6e86cfa9e8af72 [2020-10-20 00:30:52,635 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 00:30:52,648 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 00:30:52,651 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 00:30:52,653 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 00:30:52,654 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 00:30:52,655 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/double_req_bl_0910b.c [2020-10-20 00:30:52,716 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3d93902bf/2dcc8f1d72bd44eab8b1a1019fbdb5fe/FLAG329676117 [2020-10-20 00:30:53,299 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 00:30:53,300 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_0910b.c [2020-10-20 00:30:53,307 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3d93902bf/2dcc8f1d72bd44eab8b1a1019fbdb5fe/FLAG329676117 [2020-10-20 00:30:53,665 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3d93902bf/2dcc8f1d72bd44eab8b1a1019fbdb5fe [2020-10-20 00:30:53,669 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 00:30:53,676 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-20 00:30:53,678 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 00:30:53,678 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 00:30:53,681 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 00:30:53,683 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 12:30:53" (1/1) ... [2020-10-20 00:30:53,686 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ebb630b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:30:53, skipping insertion in model container [2020-10-20 00:30:53,686 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 12:30:53" (1/1) ... [2020-10-20 00:30:53,694 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 00:30:53,733 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 00:30:53,942 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 00:30:53,964 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 00:30:54,012 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 00:30:54,028 INFO L208 MainTranslator]: Completed translation [2020-10-20 00:30:54,028 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:30:54 WrapperNode [2020-10-20 00:30:54,029 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 00:30:54,029 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-20 00:30:54,030 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-20 00:30:54,030 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-20 00:30:54,037 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:30:54" (1/1) ... [2020-10-20 00:30:54,048 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:30:54" (1/1) ... [2020-10-20 00:30:54,086 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-20 00:30:54,087 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 00:30:54,087 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 00:30:54,087 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 00:30:54,096 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:30:54" (1/1) ... [2020-10-20 00:30:54,097 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:30:54" (1/1) ... [2020-10-20 00:30:54,100 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:30:54" (1/1) ... [2020-10-20 00:30:54,100 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:30:54" (1/1) ... [2020-10-20 00:30:54,111 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:30:54" (1/1) ... [2020-10-20 00:30:54,118 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:30:54" (1/1) ... [2020-10-20 00:30:54,120 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:30:54" (1/1) ... [2020-10-20 00:30:54,124 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 00:30:54,125 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 00:30:54,125 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 00:30:54,125 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 00:30:54,126 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:30:54" (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 00:30:54,198 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-20 00:30:54,199 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-20 00:30:54,199 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-20 00:30:54,199 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-20 00:30:54,199 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-20 00:30:54,200 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 00:30:54,200 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 00:30:54,200 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-20 00:30:54,200 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-20 00:30:54,693 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 00:30:54,694 INFO L298 CfgBuilder]: Removed 18 assume(true) statements. [2020-10-20 00:30:54,696 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:30:54 BoogieIcfgContainer [2020-10-20 00:30:54,696 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 00:30:54,698 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-20 00:30:54,698 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-20 00:30:54,701 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-20 00:30:54,702 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 12:30:53" (1/3) ... [2020-10-20 00:30:54,703 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@777cd04a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 12:30:54, skipping insertion in model container [2020-10-20 00:30:54,703 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:30:54" (2/3) ... [2020-10-20 00:30:54,703 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@777cd04a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 12:30:54, skipping insertion in model container [2020-10-20 00:30:54,704 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:30:54" (3/3) ... [2020-10-20 00:30:54,706 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_0910b.c [2020-10-20 00:30:54,717 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-20 00:30:54,724 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-20 00:30:54,737 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-20 00:30:54,759 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-20 00:30:54,759 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-20 00:30:54,759 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-20 00:30:54,759 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 00:30:54,760 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 00:30:54,760 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-20 00:30:54,760 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 00:30:54,760 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-20 00:30:54,774 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2020-10-20 00:30:54,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-20 00:30:54,780 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:30:54,781 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 00:30:54,781 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:30:54,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:30:54,787 INFO L82 PathProgramCache]: Analyzing trace with hash -2110731690, now seen corresponding path program 1 times [2020-10-20 00:30:54,804 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 00:30:54,805 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [408777806] [2020-10-20 00:30:54,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 00:30:54,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 00:30:54,971 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 00:30:54,972 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [408777806] [2020-10-20 00:30:54,973 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 00:30:54,973 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-20 00:30:54,974 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359259162] [2020-10-20 00:30:54,979 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-20 00:30:54,979 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 00:30:54,992 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-20 00:30:54,992 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-20 00:30:54,995 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 2 states. [2020-10-20 00:30:55,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 00:30:55,019 INFO L93 Difference]: Finished difference Result 63 states and 101 transitions. [2020-10-20 00:30:55,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-20 00:30:55,021 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 12 [2020-10-20 00:30:55,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 00:30:55,033 INFO L225 Difference]: With dead ends: 63 [2020-10-20 00:30:55,034 INFO L226 Difference]: Without dead ends: 29 [2020-10-20 00:30:55,037 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 00:30:55,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-10-20 00:30:55,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-10-20 00:30:55,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-20 00:30:55,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 39 transitions. [2020-10-20 00:30:55,080 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 39 transitions. Word has length 12 [2020-10-20 00:30:55,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 00:30:55,081 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 39 transitions. [2020-10-20 00:30:55,081 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-20 00:30:55,081 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 39 transitions. [2020-10-20 00:30:55,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-20 00:30:55,082 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:30:55,082 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 00:30:55,082 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-20 00:30:55,083 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:30:55,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:30:55,083 INFO L82 PathProgramCache]: Analyzing trace with hash 1825265086, now seen corresponding path program 1 times [2020-10-20 00:30:55,084 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 00:30:55,084 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [838964636] [2020-10-20 00:30:55,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 00:30:55,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 00:30:55,248 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 00:30:55,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 00:30:55,384 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 00:30:55,419 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 00:30:55,419 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-20 00:30:55,421 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-20 00:30:55,481 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 12:30:55 BoogieIcfgContainer [2020-10-20 00:30:55,482 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-20 00:30:55,483 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 00:30:55,483 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 00:30:55,483 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 00:30:55,486 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:30:54" (3/4) ... [2020-10-20 00:30:55,492 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-10-20 00:30:55,492 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 00:30:55,497 INFO L168 Benchmark]: Toolchain (without parser) took 1823.98 ms. Allocated memory was 44.6 MB in the beginning and 50.9 MB in the end (delta: 6.3 MB). Free memory was 24.7 MB in the beginning and 24.4 MB in the end (delta: 217.6 kB). Peak memory consumption was 6.5 MB. Max. memory is 14.3 GB. [2020-10-20 00:30:55,498 INFO L168 Benchmark]: CDTParser took 0.40 ms. Allocated memory is still 33.0 MB. Free memory was 12.1 MB in the beginning and 12.1 MB in the end (delta: 50.4 kB). Peak memory consumption was 50.4 kB. Max. memory is 14.3 GB. [2020-10-20 00:30:55,500 INFO L168 Benchmark]: CACSL2BoogieTranslator took 351.38 ms. Allocated memory is still 44.6 MB. Free memory was 23.9 MB in the beginning and 23.3 MB in the end (delta: 582.2 kB). Peak memory consumption was 15.4 MB. Max. memory is 14.3 GB. [2020-10-20 00:30:55,501 INFO L168 Benchmark]: Boogie Procedure Inliner took 56.84 ms. Allocated memory is still 44.6 MB. Free memory was 23.3 MB in the beginning and 20.8 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.4 MB. Max. memory is 14.3 GB. [2020-10-20 00:30:55,502 INFO L168 Benchmark]: Boogie Preprocessor took 38.07 ms. Allocated memory is still 44.6 MB. Free memory was 20.8 MB in the beginning and 18.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 14.3 GB. [2020-10-20 00:30:55,504 INFO L168 Benchmark]: RCFGBuilder took 571.40 ms. Allocated memory was 44.6 MB in the beginning and 47.7 MB in the end (delta: 3.1 MB). Free memory was 18.9 MB in the beginning and 15.8 MB in the end (delta: 3.1 MB). Peak memory consumption was 10.4 MB. Max. memory is 14.3 GB. [2020-10-20 00:30:55,506 INFO L168 Benchmark]: TraceAbstraction took 784.41 ms. Allocated memory was 47.7 MB in the beginning and 50.9 MB in the end (delta: 3.1 MB). Free memory was 15.2 MB in the beginning and 24.8 MB in the end (delta: -9.6 MB). Peak memory consumption was 8.9 MB. Max. memory is 14.3 GB. [2020-10-20 00:30:55,512 INFO L168 Benchmark]: Witness Printer took 10.06 ms. Allocated memory is still 50.9 MB. Free memory was 24.8 MB in the beginning and 24.4 MB in the end (delta: 399.8 kB). Peak memory consumption was 399.8 kB. Max. memory is 14.3 GB. [2020-10-20 00:30:55,525 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.40 ms. Allocated memory is still 33.0 MB. Free memory was 12.1 MB in the beginning and 12.1 MB in the end (delta: 50.4 kB). Peak memory consumption was 50.4 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 351.38 ms. Allocated memory is still 44.6 MB. Free memory was 23.9 MB in the beginning and 23.3 MB in the end (delta: 582.2 kB). Peak memory consumption was 15.4 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 56.84 ms. Allocated memory is still 44.6 MB. Free memory was 23.3 MB in the beginning and 20.8 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.4 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 38.07 ms. Allocated memory is still 44.6 MB. Free memory was 20.8 MB in the beginning and 18.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 14.3 GB. * RCFGBuilder took 571.40 ms. Allocated memory was 44.6 MB in the beginning and 47.7 MB in the end (delta: 3.1 MB). Free memory was 18.9 MB in the beginning and 15.8 MB in the end (delta: 3.1 MB). Peak memory consumption was 10.4 MB. Max. memory is 14.3 GB. * TraceAbstraction took 784.41 ms. Allocated memory was 47.7 MB in the beginning and 50.9 MB in the end (delta: 3.1 MB). Free memory was 15.2 MB in the beginning and 24.8 MB in the end (delta: -9.6 MB). Peak memory consumption was 8.9 MB. Max. memory is 14.3 GB. * Witness Printer took 10.06 ms. Allocated memory is still 50.9 MB. Free memory was 24.8 MB in the beginning and 24.4 MB in the end (delta: 399.8 kB). Peak memory consumption was 399.8 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 29, overapproximation of someUnaryDOUBLEoperation at line 134, overapproximation of someBinaryArithmeticDOUBLEoperation at line 62, overapproximation of bitwiseAnd at line 28. Possible FailurePath: [L34-L43] static const double ln2_hi_log = 6.93147180369123816490e-01, ln2_lo_log = 1.90821492927058770002e-10, two54_log = 1.80143985094819840000e+16, Lg1_log = 6.666666666666735130e-01, Lg2_log = 3.999999999940941908e-01, Lg3_log = 2.857142874366239149e-01, Lg4_log = 2.222219843214978396e-01, Lg5_log = 1.818357216161805012e-01, Lg6_log = 1.531383769920937332e-01, Lg7_log = 1.479819860511658591e-01; [L45] static const double zero = 0.0; VAL [Lg1_log=666666666666673513/1000000000000000000, Lg2_log=999999999985235477/2500000000000000000, Lg3_log=2857142874366239149/10000000000000000000, Lg4_log=555554960803744599/2500000000000000000, Lg5_log=454589304040451253/2500000000000000000, Lg6_log=382845942480234333/2500000000000000000, Lg7_log=1479819860511658591/10000000000000000000, ln2_hi_log=69314718036912381649/100000000000000000000, ln2_lo_log=95410746463529385001/500000000000000000000000000000, two54_log=18014398509481984, zero=0] [L134] double x = -0.0; [L48] double hfsq, f, s, z, R, w, t1, t2, dk; [L49] __int32_t k, hx, i, j; [L50] __uint32_t lx; VAL [Lg1_log=666666666666673513/1000000000000000000, Lg2_log=999999999985235477/2500000000000000000, Lg3_log=2857142874366239149/10000000000000000000, Lg4_log=555554960803744599/2500000000000000000, Lg5_log=454589304040451253/2500000000000000000, Lg6_log=382845942480234333/2500000000000000000, Lg7_log=1479819860511658591/10000000000000000000, ln2_hi_log=69314718036912381649/100000000000000000000, ln2_lo_log=95410746463529385001/500000000000000000000000000000, two54_log=18014398509481984, zero=0] [L53] ieee_double_shape_type ew_u; [L54] ew_u.value = (x) [L55] EXPR ew_u.parts.msw [L55] (hx) = ew_u.parts.msw [L56] EXPR ew_u.parts.lsw [L56] (lx) = ew_u.parts.lsw [L59] k = 0 VAL [Lg1_log=666666666666673513/1000000000000000000, Lg2_log=999999999985235477/2500000000000000000, Lg3_log=2857142874366239149/10000000000000000000, Lg4_log=555554960803744599/2500000000000000000, Lg5_log=454589304040451253/2500000000000000000, Lg6_log=382845942480234333/2500000000000000000, Lg7_log=1479819860511658591/10000000000000000000, ln2_hi_log=69314718036912381649/100000000000000000000, ln2_lo_log=95410746463529385001/500000000000000000000000000000, two54_log=18014398509481984, zero=0] [L60] COND TRUE hx < 0x00100000 VAL [Lg1_log=666666666666673513/1000000000000000000, Lg2_log=999999999985235477/2500000000000000000, Lg3_log=2857142874366239149/10000000000000000000, Lg4_log=555554960803744599/2500000000000000000, Lg5_log=454589304040451253/2500000000000000000, Lg6_log=382845942480234333/2500000000000000000, Lg7_log=1479819860511658591/10000000000000000000, ln2_hi_log=69314718036912381649/100000000000000000000, ln2_lo_log=95410746463529385001/500000000000000000000000000000, two54_log=18014398509481984, zero=0] [L61] COND TRUE ((hx & 0x7fffffff) | lx) == 0 [L62] return -two54_log / zero; VAL [Lg1_log=666666666666673513/1000000000000000000, Lg2_log=999999999985235477/2500000000000000000, Lg3_log=2857142874366239149/10000000000000000000, Lg4_log=555554960803744599/2500000000000000000, Lg5_log=454589304040451253/2500000000000000000, Lg6_log=382845942480234333/2500000000000000000, Lg7_log=1479819860511658591/10000000000000000000, ln2_hi_log=69314718036912381649/100000000000000000000, ln2_lo_log=95410746463529385001/500000000000000000000000000000, two54_log=18014398509481984, zero=0] [L135] double res = __ieee754_log(x); [L21] __int32_t hx, lx; VAL [Lg1_log=666666666666673513/1000000000000000000, Lg2_log=999999999985235477/2500000000000000000, Lg3_log=2857142874366239149/10000000000000000000, Lg4_log=555554960803744599/2500000000000000000, Lg5_log=454589304040451253/2500000000000000000, Lg6_log=382845942480234333/2500000000000000000, Lg7_log=1479819860511658591/10000000000000000000, ln2_hi_log=69314718036912381649/100000000000000000000, ln2_lo_log=95410746463529385001/500000000000000000000000000000, two54_log=18014398509481984, zero=0] [L23] ieee_double_shape_type ew_u; [L24] ew_u.value = (x) [L25] EXPR ew_u.parts.msw [L25] (hx) = ew_u.parts.msw [L26] EXPR ew_u.parts.lsw [L26] (lx) = ew_u.parts.lsw [L28] hx &= 0x7fffffff [L29] hx |= (__uint32_t)(lx | (-lx)) >> 31 [L30] hx = 0x7ff00000 - hx [L31] return 1 - (int)((__uint32_t)(hx | (-hx)) >> 31); VAL [Lg1_log=666666666666673513/1000000000000000000, Lg2_log=999999999985235477/2500000000000000000, Lg3_log=2857142874366239149/10000000000000000000, Lg4_log=555554960803744599/2500000000000000000, Lg5_log=454589304040451253/2500000000000000000, Lg6_log=382845942480234333/2500000000000000000, Lg7_log=1479819860511658591/10000000000000000000, ln2_hi_log=69314718036912381649/100000000000000000000, ln2_lo_log=95410746463529385001/500000000000000000000000000000, two54_log=18014398509481984, zero=0] [L138] COND TRUE !isinf_double(res) [L3] __assert_fail("0", "double_req_bl_0910b.c", 3, "reach_error") VAL [Lg1_log=666666666666673513/1000000000000000000, Lg2_log=999999999985235477/2500000000000000000, Lg3_log=2857142874366239149/10000000000000000000, Lg4_log=555554960803744599/2500000000000000000, Lg5_log=454589304040451253/2500000000000000000, Lg6_log=382845942480234333/2500000000000000000, Lg7_log=1479819860511658591/10000000000000000000, ln2_hi_log=69314718036912381649/100000000000000000000, ln2_lo_log=95410746463529385001/500000000000000000000000000000, two54_log=18014398509481984, zero=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 33 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.6s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 42 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=33occurred 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, 26 NumberOfCodeBlocks, 26 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 11 ConstructedInterpolants, 0 QuantifiedInterpolants, 121 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 00:30:57,806 INFO L177 SettingsManager]: Resetting all preferences to default values... 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[2020-10-20 00:30:57,928 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 00:30:57,929 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 00:30:57,929 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 00:30:57,930 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 00:30:57,931 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 00:30:57,931 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 00:30:57,932 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 00:30:57,932 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 00:30:57,932 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 00:30:57,933 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 00:30:57,934 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 00:30:57,935 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-10-20 00:30:57,967 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 00:30:57,967 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 00:30:57,969 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 00:30:57,969 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 00:30:57,969 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 00:30:57,970 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 00:30:57,970 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-20 00:30:57,970 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-20 00:30:57,970 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 00:30:57,971 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-20 00:30:57,971 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-20 00:30:57,971 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-20 00:30:57,971 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-10-20 00:30:57,972 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-10-20 00:30:57,972 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-20 00:30:57,972 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-20 00:30:57,972 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 00:30:57,973 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-20 00:30:57,973 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 00:30:57,973 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 00:30:57,973 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-20 00:30:57,974 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-20 00:30:57,974 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 00:30:57,974 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 00:30:57,975 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-20 00:30:57,975 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-20 00:30:57,975 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-10-20 00:30:57,975 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-10-20 00:30:57,976 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-20 00:30:57,976 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 00:30:57,976 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-20 00:30:57,976 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 -> c07e352bcbba2d31c9106eacdc6e86cfa9e8af72 [2020-10-20 00:30:58,212 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 00:30:58,226 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 00:30:58,230 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 00:30:58,232 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 00:30:58,233 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 00:30:58,233 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/double_req_bl_0910b.c [2020-10-20 00:30:58,299 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f20d34aec/e2dc8786f16e4f318df55362df14add9/FLAGa4542ca78 [2020-10-20 00:30:58,930 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 00:30:58,931 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_0910b.c [2020-10-20 00:30:58,938 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f20d34aec/e2dc8786f16e4f318df55362df14add9/FLAGa4542ca78 [2020-10-20 00:30:59,286 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f20d34aec/e2dc8786f16e4f318df55362df14add9 [2020-10-20 00:30:59,289 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 00:30:59,295 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-20 00:30:59,296 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 00:30:59,296 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 00:30:59,299 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 00:30:59,300 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 12:30:59" (1/1) ... [2020-10-20 00:30:59,304 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c50fd3e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:30:59, skipping insertion in model container [2020-10-20 00:30:59,304 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 12:30:59" (1/1) ... [2020-10-20 00:30:59,311 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 00:30:59,334 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 00:30:59,582 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 00:30:59,606 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 00:30:59,668 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 00:30:59,695 INFO L208 MainTranslator]: Completed translation [2020-10-20 00:30:59,696 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:30:59 WrapperNode [2020-10-20 00:30:59,696 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 00:30:59,697 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-20 00:30:59,697 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-20 00:30:59,697 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-20 00:30:59,706 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:30:59" (1/1) ... [2020-10-20 00:30:59,720 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:30:59" (1/1) ... [2020-10-20 00:30:59,752 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-20 00:30:59,753 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 00:30:59,753 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 00:30:59,753 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 00:30:59,764 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:30:59" (1/1) ... [2020-10-20 00:30:59,764 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:30:59" (1/1) ... [2020-10-20 00:30:59,771 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:30:59" (1/1) ... [2020-10-20 00:30:59,771 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:30:59" (1/1) ... [2020-10-20 00:30:59,786 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:30:59" (1/1) ... [2020-10-20 00:30:59,792 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:30:59" (1/1) ... [2020-10-20 00:30:59,796 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:30:59" (1/1) ... [2020-10-20 00:30:59,802 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 00:30:59,803 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 00:30:59,803 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 00:30:59,803 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 00:30:59,804 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:30:59" (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 00:30:59,885 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2020-10-20 00:30:59,887 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2020-10-20 00:30:59,887 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-10-20 00:30:59,887 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-20 00:30:59,888 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-10-20 00:30:59,888 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 00:30:59,888 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 00:30:59,898 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2020-10-20 00:30:59,899 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-20 00:31:24,071 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 00:31:24,071 INFO L298 CfgBuilder]: Removed 18 assume(true) statements. [2020-10-20 00:31:24,073 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:31:24 BoogieIcfgContainer [2020-10-20 00:31:24,073 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 00:31:24,075 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-20 00:31:24,075 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-20 00:31:24,079 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-20 00:31:24,079 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 12:30:59" (1/3) ... [2020-10-20 00:31:24,080 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b1585f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 12:31:24, skipping insertion in model container [2020-10-20 00:31:24,080 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:30:59" (2/3) ... [2020-10-20 00:31:24,081 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b1585f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 12:31:24, skipping insertion in model container [2020-10-20 00:31:24,081 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:31:24" (3/3) ... [2020-10-20 00:31:24,083 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_0910b.c [2020-10-20 00:31:24,096 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-20 00:31:24,104 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-20 00:31:24,120 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-20 00:31:24,147 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-20 00:31:24,148 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-20 00:31:24,148 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-20 00:31:24,148 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 00:31:24,149 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 00:31:24,149 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-20 00:31:24,149 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 00:31:24,150 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-20 00:31:24,166 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2020-10-20 00:31:24,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-20 00:31:24,172 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:31:24,173 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 00:31:24,173 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:31:24,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:31:24,178 INFO L82 PathProgramCache]: Analyzing trace with hash -2110731690, now seen corresponding path program 1 times [2020-10-20 00:31:24,190 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 00:31:24,190 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1670605431] [2020-10-20 00:31:24,191 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 00:31:25,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 00:31:25,217 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 1 conjunts are in the unsatisfiable core [2020-10-20 00:31:25,222 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 00:31:25,239 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 00:31:25,240 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-20 00:31:25,245 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 00:31:25,247 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1670605431] [2020-10-20 00:31:25,247 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-20 00:31:25,248 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-10-20 00:31:25,249 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409180224] [2020-10-20 00:31:25,254 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-20 00:31:25,255 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-20 00:31:25,266 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-20 00:31:25,266 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-20 00:31:25,269 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 2 states. [2020-10-20 00:31:25,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 00:31:25,290 INFO L93 Difference]: Finished difference Result 63 states and 101 transitions. [2020-10-20 00:31:25,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-20 00:31:25,291 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 12 [2020-10-20 00:31:25,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 00:31:25,303 INFO L225 Difference]: With dead ends: 63 [2020-10-20 00:31:25,303 INFO L226 Difference]: Without dead ends: 29 [2020-10-20 00:31:25,307 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 22 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 00:31:25,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-10-20 00:31:25,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-10-20 00:31:25,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-20 00:31:25,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 39 transitions. [2020-10-20 00:31:25,347 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 39 transitions. Word has length 12 [2020-10-20 00:31:25,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 00:31:25,348 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 39 transitions. [2020-10-20 00:31:25,348 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-20 00:31:25,348 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 39 transitions. [2020-10-20 00:31:25,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-20 00:31:25,349 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:31:25,349 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 00:31:25,563 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-10-20 00:31:25,564 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:31:25,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:31:25,565 INFO L82 PathProgramCache]: Analyzing trace with hash 1825265086, now seen corresponding path program 1 times [2020-10-20 00:31:25,567 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 00:31:25,568 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [736110712] [2020-10-20 00:31:25,568 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 00:31:26,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 00:31:26,820 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 00:31:28,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 00:31:28,058 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 00:31:28,197 INFO L173 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2020-10-20 00:31:28,198 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-20 00:31:28,399 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-10-20 00:31:28,473 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 12:31:28 BoogieIcfgContainer [2020-10-20 00:31:28,476 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-20 00:31:28,477 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 00:31:28,477 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 00:31:28,477 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 00:31:28,478 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:31:24" (3/4) ... [2020-10-20 00:31:28,480 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-10-20 00:31:28,562 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-20 00:31:28,562 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 00:31:28,565 INFO L168 Benchmark]: Toolchain (without parser) took 29273.52 ms. Allocated memory was 41.9 MB in the beginning and 46.1 MB in the end (delta: 4.2 MB). Free memory was 21.5 MB in the beginning and 24.9 MB in the end (delta: -3.3 MB). Peak memory consumption was 848.5 kB. Max. memory is 14.3 GB. [2020-10-20 00:31:28,566 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 32.0 MB. Free memory was 10.9 MB in the beginning and 10.9 MB in the end (delta: 47.5 kB). Peak memory consumption was 47.5 kB. Max. memory is 14.3 GB. [2020-10-20 00:31:28,567 INFO L168 Benchmark]: CACSL2BoogieTranslator took 400.67 ms. Allocated memory was 41.9 MB in the beginning and 42.5 MB in the end (delta: 524.3 kB). Free memory was 20.7 MB in the beginning and 17.7 MB in the end (delta: 2.9 MB). Peak memory consumption was 11.3 MB. Max. memory is 14.3 GB. [2020-10-20 00:31:28,568 INFO L168 Benchmark]: Boogie Procedure Inliner took 55.46 ms. Allocated memory is still 42.5 MB. Free memory was 17.7 MB in the beginning and 15.2 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.3 GB. [2020-10-20 00:31:28,568 INFO L168 Benchmark]: Boogie Preprocessor took 49.66 ms. Allocated memory is still 42.5 MB. Free memory was 15.2 MB in the beginning and 13.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 14.3 GB. [2020-10-20 00:31:28,569 INFO L168 Benchmark]: RCFGBuilder took 24270.60 ms. Allocated memory was 42.5 MB in the beginning and 44.6 MB in the end (delta: 2.1 MB). Free memory was 13.0 MB in the beginning and 20.7 MB in the end (delta: -7.8 MB). Peak memory consumption was 5.3 MB. Max. memory is 14.3 GB. [2020-10-20 00:31:28,570 INFO L168 Benchmark]: TraceAbstraction took 4401.39 ms. Allocated memory was 44.6 MB in the beginning and 46.1 MB in the end (delta: 1.6 MB). Free memory was 20.5 MB in the beginning and 29.3 MB in the end (delta: -8.8 MB). Peak memory consumption was 13.4 MB. Max. memory is 14.3 GB. [2020-10-20 00:31:28,571 INFO L168 Benchmark]: Witness Printer took 85.71 ms. Allocated memory is still 46.1 MB. Free memory was 29.3 MB in the beginning and 24.9 MB in the end (delta: 4.4 MB). Peak memory consumption was 4.4 MB. Max. memory is 14.3 GB. [2020-10-20 00:31:28,576 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 32.0 MB. Free memory was 10.9 MB in the beginning and 10.9 MB in the end (delta: 47.5 kB). Peak memory consumption was 47.5 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 400.67 ms. Allocated memory was 41.9 MB in the beginning and 42.5 MB in the end (delta: 524.3 kB). Free memory was 20.7 MB in the beginning and 17.7 MB in the end (delta: 2.9 MB). Peak memory consumption was 11.3 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 55.46 ms. Allocated memory is still 42.5 MB. Free memory was 17.7 MB in the beginning and 15.2 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 49.66 ms. Allocated memory is still 42.5 MB. Free memory was 15.2 MB in the beginning and 13.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 14.3 GB. * RCFGBuilder took 24270.60 ms. Allocated memory was 42.5 MB in the beginning and 44.6 MB in the end (delta: 2.1 MB). Free memory was 13.0 MB in the beginning and 20.7 MB in the end (delta: -7.8 MB). Peak memory consumption was 5.3 MB. Max. memory is 14.3 GB. * TraceAbstraction took 4401.39 ms. Allocated memory was 44.6 MB in the beginning and 46.1 MB in the end (delta: 1.6 MB). Free memory was 20.5 MB in the beginning and 29.3 MB in the end (delta: -8.8 MB). Peak memory consumption was 13.4 MB. Max. memory is 14.3 GB. * Witness Printer took 85.71 ms. Allocated memory is still 46.1 MB. Free memory was 29.3 MB in the beginning and 24.9 MB in the end (delta: 4.4 MB). Peak memory consumption was 4.4 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: [L34-L43] static const double ln2_hi_log = 6.93147180369123816490e-01, ln2_lo_log = 1.90821492927058770002e-10, two54_log = 1.80143985094819840000e+16, Lg1_log = 6.666666666666735130e-01, Lg2_log = 3.999999999940941908e-01, Lg3_log = 2.857142874366239149e-01, Lg4_log = 2.222219843214978396e-01, Lg5_log = 1.818357216161805012e-01, Lg6_log = 1.531383769920937332e-01, Lg7_log = 1.479819860511658591e-01; [L45] static const double zero = 0.0; VAL [Lg1_log=0.6666666666666735, Lg2_log=0.3999999999940942, Lg3_log=0.2857142874366239, Lg4_log=0.22222198432149784, Lg5_log=0.1818357216161805, Lg6_log=0.15313837699209373, Lg7_log=0.14798198605116586, ln2_hi_log=0.6931471803691238, ln2_lo_log=0.00000000019082149292705877, two54_log=18014398509481984, zero=0.0] [L134] double x = -0.0; [L48] double hfsq, f, s, z, R, w, t1, t2, dk; [L49] __int32_t k, hx, i, j; [L50] __uint32_t lx; VAL [Lg1_log=0.6666666666666735, Lg2_log=0.3999999999940942, Lg3_log=0.2857142874366239, Lg4_log=0.22222198432149784, Lg5_log=0.1818357216161805, Lg6_log=0.15313837699209373, Lg7_log=0.14798198605116586, ln2_hi_log=0.6931471803691238, ln2_lo_log=0.00000000019082149292705877, two54_log=18014398509481984, zero=0.0] [L53] ieee_double_shape_type ew_u; [L54] ew_u.value = (x) [L55] EXPR ew_u.parts.msw [L55] (hx) = ew_u.parts.msw [L56] EXPR ew_u.parts.lsw [L56] (lx) = ew_u.parts.lsw [L59] k = 0 VAL [Lg1_log=0.6666666666666735, Lg2_log=0.3999999999940942, Lg3_log=0.2857142874366239, Lg4_log=0.22222198432149784, Lg5_log=0.1818357216161805, Lg6_log=0.15313837699209373, Lg7_log=0.14798198605116586, ln2_hi_log=0.6931471803691238, ln2_lo_log=0.00000000019082149292705877, two54_log=18014398509481984, zero=0.0] [L60] COND TRUE hx < 0x00100000 VAL [Lg1_log=0.6666666666666735, Lg2_log=0.3999999999940942, Lg3_log=0.2857142874366239, Lg4_log=0.22222198432149784, Lg5_log=0.1818357216161805, Lg6_log=0.15313837699209373, Lg7_log=0.14798198605116586, ln2_hi_log=0.6931471803691238, ln2_lo_log=0.00000000019082149292705877, two54_log=18014398509481984, zero=0.0] [L61] COND TRUE ((hx & 0x7fffffff) | lx) == 0 [L62] return -two54_log / zero; VAL [Lg1_log=0.6666666666666735, Lg2_log=0.3999999999940942, Lg3_log=0.2857142874366239, Lg4_log=0.22222198432149784, Lg5_log=0.1818357216161805, Lg6_log=0.15313837699209373, Lg7_log=0.14798198605116586, ln2_hi_log=0.6931471803691238, ln2_lo_log=0.00000000019082149292705877, two54_log=18014398509481984, zero=0.0] [L135] double res = __ieee754_log(x); [L21] __int32_t hx, lx; VAL [Lg1_log=0.6666666666666735, Lg2_log=0.3999999999940942, Lg3_log=0.2857142874366239, Lg4_log=0.22222198432149784, Lg5_log=0.1818357216161805, Lg6_log=0.15313837699209373, Lg7_log=0.14798198605116586, ln2_hi_log=0.6931471803691238, ln2_lo_log=0.00000000019082149292705877, two54_log=18014398509481984, zero=0.0] [L23] ieee_double_shape_type ew_u; [L24] ew_u.value = (x) [L25] EXPR ew_u.parts.msw [L25] (hx) = ew_u.parts.msw [L26] EXPR ew_u.parts.lsw [L26] (lx) = ew_u.parts.lsw [L28] hx &= 0x7fffffff [L29] hx |= (__uint32_t)(lx | (-lx)) >> 31 [L30] hx = 0x7ff00000 - hx [L31] return 1 - (int)((__uint32_t)(hx | (-hx)) >> 31); VAL [Lg1_log=0.6666666666666735, Lg2_log=0.3999999999940942, Lg3_log=0.2857142874366239, Lg4_log=0.22222198432149784, Lg5_log=0.1818357216161805, Lg6_log=0.15313837699209373, Lg7_log=0.14798198605116586, ln2_hi_log=0.6931471803691238, ln2_lo_log=0.00000000019082149292705877, two54_log=18014398509481984, zero=0.0] [L138] COND TRUE !isinf_double(res) [L3] __assert_fail("0", "double_req_bl_0910b.c", 3, "reach_error") VAL [Lg1_log=0.6666666666666735, Lg2_log=0.3999999999940942, Lg3_log=0.2857142874366239, Lg4_log=0.22222198432149784, Lg5_log=0.1818357216161805, Lg6_log=0.15313837699209373, Lg7_log=0.14798198605116586, ln2_hi_log=0.6931471803691238, ln2_lo_log=0.00000000019082149292705877, two54_log=18014398509481984, zero=0.0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 33 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 4.2s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 42 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 22 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=33occurred 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, 2.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 26 NumberOfCodeBlocks, 26 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 22 ConstructedInterpolants, 0 QuantifiedInterpolants, 242 SizeOfPredicates, 0 NumberOfNonLiveVariables, 50 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, 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...