./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/float-newlib/float_req_bl_0832a.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f470102c Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -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/float_req_bl_0832a.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(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 11ee320e5dd60225454ae4b669c3bcedd1b28d2a ......................................................................................................................................................................................................................................................................................................... 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 -Xmx12G -Xms1G -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/float_req_bl_0832a.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(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 11ee320e5dd60225454ae4b669c3bcedd1b28d2a .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.25-f470102 [2019-11-28 16:52:59,760 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-28 16:52:59,763 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-28 16:52:59,783 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-28 16:52:59,783 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-28 16:52:59,785 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-28 16:52:59,788 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-28 16:52:59,799 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-28 16:52:59,804 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-28 16:52:59,809 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-28 16:52:59,810 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-28 16:52:59,812 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-28 16:52:59,813 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-28 16:52:59,816 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-28 16:52:59,818 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-28 16:52:59,820 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-28 16:52:59,822 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-28 16:52:59,824 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-28 16:52:59,827 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-28 16:52:59,829 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-28 16:52:59,830 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-28 16:52:59,832 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-28 16:52:59,833 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-28 16:52:59,834 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-28 16:52:59,837 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-28 16:52:59,837 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-28 16:52:59,837 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-28 16:52:59,839 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-28 16:52:59,839 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-28 16:52:59,840 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-28 16:52:59,841 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-28 16:52:59,842 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-28 16:52:59,843 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-28 16:52:59,844 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-28 16:52:59,845 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-28 16:52:59,845 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-28 16:52:59,846 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-28 16:52:59,846 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-28 16:52:59,846 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-28 16:52:59,847 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-28 16:52:59,848 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-28 16:52:59,849 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-28 16:52:59,865 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-28 16:52:59,866 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-28 16:52:59,867 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-28 16:52:59,867 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-28 16:52:59,868 INFO L138 SettingsManager]: * Use SBE=true [2019-11-28 16:52:59,868 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-28 16:52:59,868 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-28 16:52:59,869 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-28 16:52:59,869 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-28 16:52:59,869 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-28 16:52:59,869 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-28 16:52:59,870 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-28 16:52:59,870 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-28 16:52:59,870 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-28 16:52:59,871 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-28 16:52:59,871 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-28 16:52:59,871 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-28 16:52:59,871 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-28 16:52:59,872 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-28 16:52:59,872 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-28 16:52:59,872 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-28 16:52:59,873 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-28 16:52:59,873 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-28 16:52:59,873 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-28 16:52:59,873 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-28 16:52:59,874 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-28 16:52:59,874 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-28 16:52:59,874 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-28 16:52:59,875 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-11-28 16:52:59,875 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(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 11ee320e5dd60225454ae4b669c3bcedd1b28d2a [2019-11-28 16:53:00,227 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-28 16:53:00,240 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-28 16:53:00,245 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-28 16:53:00,248 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-28 16:53:00,249 INFO L275 PluginConnector]: CDTParser initialized [2019-11-28 16:53:00,251 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/float_req_bl_0832a.c [2019-11-28 16:53:00,339 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d393bf2f9/dd075f7f48fd4e65916996ad7310e2ce/FLAG716ba4c91 [2019-11-28 16:53:00,807 INFO L306 CDTParser]: Found 1 translation units. [2019-11-28 16:53:00,808 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/float_req_bl_0832a.c [2019-11-28 16:53:00,816 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d393bf2f9/dd075f7f48fd4e65916996ad7310e2ce/FLAG716ba4c91 [2019-11-28 16:53:01,156 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d393bf2f9/dd075f7f48fd4e65916996ad7310e2ce [2019-11-28 16:53:01,160 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-28 16:53:01,161 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-28 16:53:01,162 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-28 16:53:01,162 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-28 16:53:01,166 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-28 16:53:01,167 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:53:01" (1/1) ... [2019-11-28 16:53:01,170 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b5c341a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:53:01, skipping insertion in model container [2019-11-28 16:53:01,170 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:53:01" (1/1) ... [2019-11-28 16:53:01,178 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-28 16:53:01,213 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-28 16:53:01,414 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 16:53:01,421 INFO L203 MainTranslator]: Completed pre-run [2019-11-28 16:53:01,525 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 16:53:01,548 INFO L208 MainTranslator]: Completed translation [2019-11-28 16:53:01,548 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:53:01 WrapperNode [2019-11-28 16:53:01,548 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-28 16:53:01,549 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-28 16:53:01,549 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-28 16:53:01,549 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-28 16:53:01,558 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:53:01" (1/1) ... [2019-11-28 16:53:01,571 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:53:01" (1/1) ... [2019-11-28 16:53:01,601 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-28 16:53:01,601 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-28 16:53:01,601 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-28 16:53:01,601 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-28 16:53:01,610 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:53:01" (1/1) ... [2019-11-28 16:53:01,610 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:53:01" (1/1) ... [2019-11-28 16:53:01,615 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:53:01" (1/1) ... [2019-11-28 16:53:01,615 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:53:01" (1/1) ... [2019-11-28 16:53:01,626 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:53:01" (1/1) ... [2019-11-28 16:53:01,633 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:53:01" (1/1) ... [2019-11-28 16:53:01,635 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:53:01" (1/1) ... [2019-11-28 16:53:01,639 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-28 16:53:01,640 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-28 16:53:01,640 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-28 16:53:01,640 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-28 16:53:01,641 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:53:01" (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 [2019-11-28 16:53:01,708 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-28 16:53:01,708 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-28 16:53:01,708 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2019-11-28 16:53:01,709 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2019-11-28 16:53:01,709 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-28 16:53:01,709 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-28 16:53:01,709 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-28 16:53:01,709 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2019-11-28 16:53:01,709 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-28 16:53:02,165 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-28 16:53:02,165 INFO L287 CfgBuilder]: Removed 16 assume(true) statements. [2019-11-28 16:53:02,166 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:53:02 BoogieIcfgContainer [2019-11-28 16:53:02,166 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-28 16:53:02,167 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-28 16:53:02,168 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-28 16:53:02,170 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-28 16:53:02,171 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 04:53:01" (1/3) ... [2019-11-28 16:53:02,171 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@eafa95b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:53:02, skipping insertion in model container [2019-11-28 16:53:02,172 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:53:01" (2/3) ... [2019-11-28 16:53:02,172 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@eafa95b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:53:02, skipping insertion in model container [2019-11-28 16:53:02,173 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:53:02" (3/3) ... [2019-11-28 16:53:02,174 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_0832a.c [2019-11-28 16:53:02,185 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-28 16:53:02,192 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-28 16:53:02,207 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-28 16:53:02,238 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-28 16:53:02,239 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-28 16:53:02,239 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-28 16:53:02,239 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-28 16:53:02,239 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-28 16:53:02,240 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-28 16:53:02,240 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-28 16:53:02,240 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-28 16:53:02,254 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states. [2019-11-28 16:53:02,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-28 16:53:02,261 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 16:53:02,262 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 16:53:02,262 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 16:53:02,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 16:53:02,269 INFO L82 PathProgramCache]: Analyzing trace with hash 354246130, now seen corresponding path program 1 times [2019-11-28 16:53:02,276 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 16:53:02,276 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1821003910] [2019-11-28 16:53:02,276 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 16:53:02,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 16:53:02,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 16:53:02,415 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1821003910] [2019-11-28 16:53:02,416 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 16:53:02,416 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-28 16:53:02,417 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213869525] [2019-11-28 16:53:02,422 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-28 16:53:02,422 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 16:53:02,433 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-28 16:53:02,434 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-28 16:53:02,436 INFO L87 Difference]: Start difference. First operand 36 states. Second operand 2 states. [2019-11-28 16:53:02,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 16:53:02,455 INFO L93 Difference]: Finished difference Result 70 states and 112 transitions. [2019-11-28 16:53:02,456 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-28 16:53:02,457 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2019-11-28 16:53:02,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 16:53:02,469 INFO L225 Difference]: With dead ends: 70 [2019-11-28 16:53:02,469 INFO L226 Difference]: Without dead ends: 33 [2019-11-28 16:53:02,472 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-28 16:53:02,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2019-11-28 16:53:02,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2019-11-28 16:53:02,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2019-11-28 16:53:02,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 43 transitions. [2019-11-28 16:53:02,508 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 43 transitions. Word has length 8 [2019-11-28 16:53:02,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 16:53:02,508 INFO L462 AbstractCegarLoop]: Abstraction has 33 states and 43 transitions. [2019-11-28 16:53:02,508 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-28 16:53:02,508 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 43 transitions. [2019-11-28 16:53:02,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-11-28 16:53:02,509 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 16:53:02,509 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 16:53:02,510 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 16:53:02,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 16:53:02,510 INFO L82 PathProgramCache]: Analyzing trace with hash 325000437, now seen corresponding path program 1 times [2019-11-28 16:53:02,510 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 16:53:02,511 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1164889856] [2019-11-28 16:53:02,511 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 16:53:02,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 16:53:02,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 16:53:02,626 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 16:53:02,626 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-28 16:53:02,667 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 04:53:02 BoogieIcfgContainer [2019-11-28 16:53:02,667 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-28 16:53:02,668 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-28 16:53:02,668 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-28 16:53:02,668 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-28 16:53:02,669 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:53:02" (3/4) ... [2019-11-28 16:53:02,672 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-11-28 16:53:02,673 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-28 16:53:02,675 INFO L168 Benchmark]: Toolchain (without parser) took 1513.10 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 91.8 MB). Free memory was 956.3 MB in the beginning and 1.0 GB in the end (delta: -64.2 MB). Peak memory consumption was 27.6 MB. Max. memory is 11.5 GB. [2019-11-28 16:53:02,676 INFO L168 Benchmark]: CDTParser took 1.02 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 16:53:02,677 INFO L168 Benchmark]: CACSL2BoogieTranslator took 386.58 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 91.8 MB). Free memory was 956.3 MB in the beginning and 1.1 GB in the end (delta: -124.4 MB). Peak memory consumption was 20.5 MB. Max. memory is 11.5 GB. [2019-11-28 16:53:02,678 INFO L168 Benchmark]: Boogie Procedure Inliner took 51.84 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 16:53:02,678 INFO L168 Benchmark]: Boogie Preprocessor took 37.96 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 16:53:02,679 INFO L168 Benchmark]: RCFGBuilder took 527.02 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 39.4 MB). Peak memory consumption was 39.4 MB. Max. memory is 11.5 GB. [2019-11-28 16:53:02,680 INFO L168 Benchmark]: TraceAbstraction took 499.83 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 20.8 MB). Peak memory consumption was 20.8 MB. Max. memory is 11.5 GB. [2019-11-28 16:53:02,680 INFO L168 Benchmark]: Witness Printer took 5.00 ms. Allocated memory is still 1.1 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 16:53:02,685 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.02 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 386.58 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 91.8 MB). Free memory was 956.3 MB in the beginning and 1.1 GB in the end (delta: -124.4 MB). Peak memory consumption was 20.5 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 51.84 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 37.96 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 527.02 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 39.4 MB). Peak memory consumption was 39.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 499.83 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 20.8 MB). Peak memory consumption was 20.8 MB. Max. memory is 11.5 GB. * Witness Printer took 5.00 ms. Allocated memory is still 1.1 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 122]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 121, overapproximation of someUnaryDOUBLEoperation at line 19, overapproximation of bitwiseAnd at line 46, overapproximation of someBinaryArithmeticFLOAToperation at line 50. Possible FailurePath: [L15-L34] static const float one_exp = 1.0, halF_exp[2] = { 0.5, -0.5, }, huge_exp = 1.0e+30, twom100_exp = 7.8886090522e-31, ln2HI_exp[2] = { 6.9313812256e-01, -6.9313812256e-01, }, ln2LO_exp[2] = { 9.0580006145e-06, -9.0580006145e-06, }, invln2_exp = 1.4426950216e+00, P1_exp = 1.6666667163e-01, P2_exp = -2.7777778450e-03, P3_exp = 6.6137559770e-05, P4_exp = -1.6533901999e-06, P5_exp = 4.1381369442e-08; VAL [halF_exp={6:0}, huge_exp=1000000000000000000000000000000, invln2_exp=1803368777/1250000000, ln2HI_exp={5:0}, ln2LO_exp={3:0}, one_exp=1, P1_exp=16666667163/100000000000, P3_exp=6613755977/100000000000000, P5_exp=20690684721/500000000000000000, twom100_exp=39443045261/50000000000000000000000000000000000000000] [L117] float x = 0.0f; [L37] float y, hi, lo, c, t; [L38] __int32_t k = 0, xsb, sx; [L39] __uint32_t hx; VAL [halF_exp={6:0}, huge_exp=1000000000000000000000000000000, invln2_exp=1803368777/1250000000, ln2HI_exp={5:0}, ln2LO_exp={3:0}, one_exp=1, P1_exp=16666667163/100000000000, P3_exp=6613755977/100000000000000, P5_exp=20690684721/500000000000000000, twom100_exp=39443045261/50000000000000000000000000000000000000000] [L42] ieee_float_shape_type gf_u; [L43] gf_u.value = (x) [L44] EXPR gf_u.word [L44] (sx) = gf_u.word [L46] xsb = (sx >> 31) & 1 [L47] hx = sx & 0x7fffffff VAL [halF_exp={6:0}, huge_exp=1000000000000000000000000000000, invln2_exp=1803368777/1250000000, ln2HI_exp={5:0}, ln2LO_exp={3:0}, one_exp=1, P1_exp=16666667163/100000000000, P3_exp=6613755977/100000000000000, P5_exp=20690684721/500000000000000000, twom100_exp=39443045261/50000000000000000000000000000000000000000] [L49] COND TRUE ((hx) > 0x7f800000L) [L50] return x + x; VAL [halF_exp={6:0}, huge_exp=1000000000000000000000000000000, invln2_exp=1803368777/1250000000, ln2HI_exp={5:0}, ln2LO_exp={3:0}, one_exp=1, P1_exp=16666667163/100000000000, P3_exp=6613755977/100000000000000, P5_exp=20690684721/500000000000000000, twom100_exp=39443045261/50000000000000000000000000000000000000000] [L118] float res = __ieee754_expf(x); [L121] COND TRUE res != 1.0f VAL [halF_exp={6:0}, huge_exp=1000000000000000000000000000000, invln2_exp=1803368777/1250000000, ln2HI_exp={5:0}, ln2LO_exp={3:0}, one_exp=1, P1_exp=16666667163/100000000000, P3_exp=6613755977/100000000000000, P5_exp=20690684721/500000000000000000, twom100_exp=39443045261/50000000000000000000000000000000000000000] [L122] __VERIFIER_error() VAL [halF_exp={6:0}, huge_exp=1000000000000000000000000000000, invln2_exp=1803368777/1250000000, ln2HI_exp={5:0}, ln2LO_exp={3:0}, one_exp=1, P1_exp=16666667163/100000000000, P3_exp=6613755977/100000000000000, P5_exp=20690684721/500000000000000000, twom100_exp=39443045261/50000000000000000000000000000000000000000] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 36 locations, 1 error locations. Result: UNSAFE, OverallTime: 0.3s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 46 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=36occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 17 NumberOfCodeBlocks, 17 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 7 ConstructedInterpolants, 0 QuantifiedInterpolants, 49 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.25-f470102 [2019-11-28 16:53:04,679 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-28 16:53:04,681 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-28 16:53:04,700 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-28 16:53:04,700 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-28 16:53:04,702 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-28 16:53:04,704 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-28 16:53:04,714 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-28 16:53:04,715 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-28 16:53:04,716 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-28 16:53:04,719 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-28 16:53:04,721 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-28 16:53:04,722 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-28 16:53:04,726 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-28 16:53:04,727 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-28 16:53:04,730 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-28 16:53:04,731 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-28 16:53:04,734 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-28 16:53:04,736 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-28 16:53:04,741 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-28 16:53:04,746 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-28 16:53:04,747 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-28 16:53:04,748 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-28 16:53:04,749 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-28 16:53:04,751 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-28 16:53:04,751 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-28 16:53:04,752 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-28 16:53:04,753 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-28 16:53:04,753 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-28 16:53:04,754 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-28 16:53:04,754 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-28 16:53:04,755 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-28 16:53:04,756 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-28 16:53:04,756 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-28 16:53:04,757 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-28 16:53:04,758 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-28 16:53:04,758 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-28 16:53:04,758 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-28 16:53:04,759 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-28 16:53:04,760 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-28 16:53:04,760 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-28 16:53:04,763 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2019-11-28 16:53:04,777 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-28 16:53:04,777 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-28 16:53:04,778 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-28 16:53:04,778 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-28 16:53:04,779 INFO L138 SettingsManager]: * Use SBE=true [2019-11-28 16:53:04,779 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-28 16:53:04,779 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-28 16:53:04,779 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-28 16:53:04,780 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-28 16:53:04,780 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-28 16:53:04,780 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-28 16:53:04,780 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-28 16:53:04,780 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-11-28 16:53:04,781 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-11-28 16:53:04,781 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-28 16:53:04,781 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-28 16:53:04,781 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-28 16:53:04,781 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-28 16:53:04,782 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-28 16:53:04,782 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-28 16:53:04,782 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-28 16:53:04,782 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-28 16:53:04,783 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-28 16:53:04,783 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-28 16:53:04,783 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-28 16:53:04,783 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-28 16:53:04,784 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2019-11-28 16:53:04,784 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-11-28 16:53:04,784 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-28 16:53:04,784 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-11-28 16:53:04,784 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-28 16:53:04,785 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(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 11ee320e5dd60225454ae4b669c3bcedd1b28d2a [2019-11-28 16:53:05,080 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-28 16:53:05,101 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-28 16:53:05,106 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-28 16:53:05,108 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-28 16:53:05,109 INFO L275 PluginConnector]: CDTParser initialized [2019-11-28 16:53:05,110 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/float_req_bl_0832a.c [2019-11-28 16:53:05,190 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3ae3f73d2/9f6baff16bce46f6a968e4880b73e2c8/FLAG4515540d0 [2019-11-28 16:53:05,698 INFO L306 CDTParser]: Found 1 translation units. [2019-11-28 16:53:05,699 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/float_req_bl_0832a.c [2019-11-28 16:53:05,709 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3ae3f73d2/9f6baff16bce46f6a968e4880b73e2c8/FLAG4515540d0 [2019-11-28 16:53:06,056 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3ae3f73d2/9f6baff16bce46f6a968e4880b73e2c8 [2019-11-28 16:53:06,059 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-28 16:53:06,061 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-28 16:53:06,062 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-28 16:53:06,062 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-28 16:53:06,066 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-28 16:53:06,067 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:53:06" (1/1) ... [2019-11-28 16:53:06,070 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@73a4f9cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:53:06, skipping insertion in model container [2019-11-28 16:53:06,070 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:53:06" (1/1) ... [2019-11-28 16:53:06,078 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-28 16:53:06,109 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-28 16:53:06,430 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 16:53:06,440 INFO L203 MainTranslator]: Completed pre-run [2019-11-28 16:53:06,485 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 16:53:06,524 INFO L208 MainTranslator]: Completed translation [2019-11-28 16:53:06,524 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:53:06 WrapperNode [2019-11-28 16:53:06,525 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-28 16:53:06,525 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-28 16:53:06,525 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-28 16:53:06,526 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-28 16:53:06,533 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:53:06" (1/1) ... [2019-11-28 16:53:06,550 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:53:06" (1/1) ... [2019-11-28 16:53:06,582 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-28 16:53:06,582 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-28 16:53:06,582 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-28 16:53:06,583 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-28 16:53:06,593 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:53:06" (1/1) ... [2019-11-28 16:53:06,593 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:53:06" (1/1) ... [2019-11-28 16:53:06,598 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:53:06" (1/1) ... [2019-11-28 16:53:06,599 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:53:06" (1/1) ... [2019-11-28 16:53:06,613 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:53:06" (1/1) ... [2019-11-28 16:53:06,619 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:53:06" (1/1) ... [2019-11-28 16:53:06,623 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:53:06" (1/1) ... [2019-11-28 16:53:06,627 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-28 16:53:06,628 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-28 16:53:06,628 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-28 16:53:06,628 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-28 16:53:06,629 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:53:06" (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 [2019-11-28 16:53:06,695 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4 [2019-11-28 16:53:06,695 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-28 16:53:06,695 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2019-11-28 16:53:06,696 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2019-11-28 16:53:06,696 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-28 16:53:06,696 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-28 16:53:06,696 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2019-11-28 16:53:06,696 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2019-11-28 16:53:06,697 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-28 16:53:15,343 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-28 16:53:15,343 INFO L287 CfgBuilder]: Removed 16 assume(true) statements. [2019-11-28 16:53:15,344 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:53:15 BoogieIcfgContainer [2019-11-28 16:53:15,344 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-28 16:53:15,345 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-28 16:53:15,346 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-28 16:53:15,348 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-28 16:53:15,349 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 04:53:06" (1/3) ... [2019-11-28 16:53:15,349 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@393f6a9d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:53:15, skipping insertion in model container [2019-11-28 16:53:15,350 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:53:06" (2/3) ... [2019-11-28 16:53:15,350 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@393f6a9d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:53:15, skipping insertion in model container [2019-11-28 16:53:15,350 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:53:15" (3/3) ... [2019-11-28 16:53:15,352 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_0832a.c [2019-11-28 16:53:15,360 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-28 16:53:15,366 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-28 16:53:15,376 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-28 16:53:15,396 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-28 16:53:15,396 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-28 16:53:15,396 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-28 16:53:15,397 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-28 16:53:15,397 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-28 16:53:15,397 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-28 16:53:15,397 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-28 16:53:15,397 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-28 16:53:15,411 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states. [2019-11-28 16:53:15,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-28 16:53:15,417 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 16:53:15,418 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 16:53:15,419 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 16:53:15,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 16:53:15,423 INFO L82 PathProgramCache]: Analyzing trace with hash 354246130, now seen corresponding path program 1 times [2019-11-28 16:53:15,434 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-28 16:53:15,435 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1480136521] [2019-11-28 16:53:15,435 INFO L94 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 [2019-11-28 16:53:15,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 16:53:15,939 INFO L264 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 1 conjunts are in the unsatisfiable core [2019-11-28 16:53:15,944 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 16:53:15,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 16:53:15,956 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-11-28 16:53:15,959 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 16:53:15,961 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1480136521] [2019-11-28 16:53:15,961 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-28 16:53:15,962 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2019-11-28 16:53:15,963 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991883756] [2019-11-28 16:53:15,967 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-28 16:53:15,968 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-28 16:53:15,982 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-28 16:53:15,983 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-28 16:53:15,985 INFO L87 Difference]: Start difference. First operand 36 states. Second operand 2 states. [2019-11-28 16:53:16,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 16:53:16,004 INFO L93 Difference]: Finished difference Result 70 states and 112 transitions. [2019-11-28 16:53:16,004 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-28 16:53:16,006 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2019-11-28 16:53:16,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 16:53:16,018 INFO L225 Difference]: With dead ends: 70 [2019-11-28 16:53:16,018 INFO L226 Difference]: Without dead ends: 33 [2019-11-28 16:53:16,022 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-28 16:53:16,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2019-11-28 16:53:16,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2019-11-28 16:53:16,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2019-11-28 16:53:16,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 43 transitions. [2019-11-28 16:53:16,061 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 43 transitions. Word has length 8 [2019-11-28 16:53:16,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 16:53:16,062 INFO L462 AbstractCegarLoop]: Abstraction has 33 states and 43 transitions. [2019-11-28 16:53:16,062 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-28 16:53:16,062 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 43 transitions. [2019-11-28 16:53:16,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-11-28 16:53:16,063 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 16:53:16,063 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 16:53:16,278 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2019-11-28 16:53:16,279 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 16:53:16,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 16:53:16,279 INFO L82 PathProgramCache]: Analyzing trace with hash 325000437, now seen corresponding path program 1 times [2019-11-28 16:53:16,280 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-28 16:53:16,281 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1788491498] [2019-11-28 16:53:16,281 INFO L94 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 [2019-11-28 16:53:16,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 16:53:16,877 INFO L264 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-28 16:53:16,880 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 16:53:16,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 16:53:16,937 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-11-28 16:53:17,010 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 16:53:17,011 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1788491498] [2019-11-28 16:53:17,011 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-28 16:53:17,011 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2019-11-28 16:53:17,012 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865734100] [2019-11-28 16:53:17,014 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-28 16:53:17,014 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-28 16:53:17,015 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-28 16:53:17,015 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2019-11-28 16:53:17,016 INFO L87 Difference]: Start difference. First operand 33 states and 43 transitions. Second operand 8 states. [2019-11-28 16:53:25,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 16:53:25,798 INFO L93 Difference]: Finished difference Result 54 states and 64 transitions. [2019-11-28 16:53:25,917 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-28 16:53:25,917 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 9 [2019-11-28 16:53:25,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 16:53:25,918 INFO L225 Difference]: With dead ends: 54 [2019-11-28 16:53:25,918 INFO L226 Difference]: Without dead ends: 33 [2019-11-28 16:53:25,920 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2019-11-28 16:53:25,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2019-11-28 16:53:25,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 29. [2019-11-28 16:53:25,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2019-11-28 16:53:25,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 31 transitions. [2019-11-28 16:53:25,926 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 31 transitions. Word has length 9 [2019-11-28 16:53:25,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 16:53:25,926 INFO L462 AbstractCegarLoop]: Abstraction has 29 states and 31 transitions. [2019-11-28 16:53:25,926 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-28 16:53:25,926 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 31 transitions. [2019-11-28 16:53:25,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-11-28 16:53:25,927 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 16:53:25,928 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 16:53:26,128 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2019-11-28 16:53:26,129 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 16:53:26,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 16:53:26,130 INFO L82 PathProgramCache]: Analyzing trace with hash -239562945, now seen corresponding path program 1 times [2019-11-28 16:53:26,132 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-28 16:53:26,132 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2063040207] [2019-11-28 16:53:26,133 INFO L94 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 [2019-11-28 16:53:26,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 16:53:26,707 INFO L264 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-28 16:53:26,709 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 16:53:26,830 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 16:53:26,831 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-11-28 16:53:27,787 WARN L192 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 7 [2019-11-28 16:53:27,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 16:53:27,884 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2063040207] [2019-11-28 16:53:27,884 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-28 16:53:27,884 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2019-11-28 16:53:27,885 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939431669] [2019-11-28 16:53:27,885 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-28 16:53:27,885 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-28 16:53:27,885 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-28 16:53:27,886 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2019-11-28 16:53:27,886 INFO L87 Difference]: Start difference. First operand 29 states and 31 transitions. Second operand 10 states. [2019-11-28 16:53:41,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 16:53:41,714 INFO L93 Difference]: Finished difference Result 33 states and 34 transitions. [2019-11-28 16:53:41,715 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-28 16:53:41,716 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 15 [2019-11-28 16:53:41,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 16:53:41,717 INFO L225 Difference]: With dead ends: 33 [2019-11-28 16:53:41,717 INFO L226 Difference]: Without dead ends: 29 [2019-11-28 16:53:41,718 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2019-11-28 16:53:41,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2019-11-28 16:53:41,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2019-11-28 16:53:41,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2019-11-28 16:53:41,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 30 transitions. [2019-11-28 16:53:41,723 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 30 transitions. Word has length 15 [2019-11-28 16:53:41,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 16:53:41,724 INFO L462 AbstractCegarLoop]: Abstraction has 29 states and 30 transitions. [2019-11-28 16:53:41,724 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-11-28 16:53:41,724 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 30 transitions. [2019-11-28 16:53:41,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-11-28 16:53:41,725 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 16:53:41,725 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 16:53:41,938 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2019-11-28 16:53:41,938 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 16:53:41,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 16:53:41,939 INFO L82 PathProgramCache]: Analyzing trace with hash 1708303706, now seen corresponding path program 1 times [2019-11-28 16:53:41,940 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-28 16:53:41,941 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1834129117] [2019-11-28 16:53:41,941 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2019-11-28 16:53:43,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 16:53:43,217 INFO L264 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 7 conjunts are in the unsatisfiable core [2019-11-28 16:53:43,218 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 16:53:43,284 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 16:53:43,284 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-11-28 16:53:43,664 WARN L192 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 6 [2019-11-28 16:53:43,759 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 16:53:43,760 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1834129117] [2019-11-28 16:53:43,760 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-28 16:53:43,760 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2019-11-28 16:53:43,761 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149399798] [2019-11-28 16:53:43,761 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-28 16:53:43,761 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-28 16:53:43,762 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-28 16:53:43,762 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2019-11-28 16:53:43,763 INFO L87 Difference]: Start difference. First operand 29 states and 30 transitions. Second operand 6 states. [2019-11-28 16:53:43,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 16:53:43,836 INFO L93 Difference]: Finished difference Result 29 states and 30 transitions. [2019-11-28 16:53:43,838 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-28 16:53:43,838 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2019-11-28 16:53:43,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 16:53:43,838 INFO L225 Difference]: With dead ends: 29 [2019-11-28 16:53:43,838 INFO L226 Difference]: Without dead ends: 0 [2019-11-28 16:53:43,839 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2019-11-28 16:53:43,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-28 16:53:43,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-28 16:53:43,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-28 16:53:43,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-28 16:53:43,840 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2019-11-28 16:53:43,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 16:53:43,841 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-28 16:53:43,841 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-28 16:53:43,841 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-28 16:53:43,841 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-28 16:53:44,042 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2019-11-28 16:53:44,045 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-28 16:53:44,162 INFO L249 CegarLoopResult]: At program point L126(lines 111 127) the Hoare annotation is: true [2019-11-28 16:53:44,163 INFO L246 CegarLoopResult]: For program point L52(line 52) no Hoare annotation was computed. [2019-11-28 16:53:44,163 INFO L246 CegarLoopResult]: For program point L52-2(line 52) no Hoare annotation was computed. [2019-11-28 16:53:44,163 INFO L246 CegarLoopResult]: For program point L102(lines 102 106) no Hoare annotation was computed. [2019-11-28 16:53:44,163 INFO L246 CegarLoopResult]: For program point L102-1(lines 95 108) no Hoare annotation was computed. [2019-11-28 16:53:44,163 INFO L246 CegarLoopResult]: For program point L102-2(lines 102 106) no Hoare annotation was computed. [2019-11-28 16:53:44,164 INFO L246 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-11-28 16:53:44,164 INFO L246 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-11-28 16:53:44,164 INFO L246 CegarLoopResult]: For program point L53(lines 53 54) no Hoare annotation was computed. [2019-11-28 16:53:44,164 INFO L246 CegarLoopResult]: For program point L78(lines 78 81) no Hoare annotation was computed. [2019-11-28 16:53:44,164 INFO L246 CegarLoopResult]: For program point L70(lines 70 73) no Hoare annotation was computed. [2019-11-28 16:53:44,164 INFO L246 CegarLoopResult]: For program point L70-2(lines 58 73) no Hoare annotation was computed. [2019-11-28 16:53:44,164 INFO L246 CegarLoopResult]: For program point L71(lines 71 72) no Hoare annotation was computed. [2019-11-28 16:53:44,165 INFO L246 CegarLoopResult]: For program point L121(lines 121 124) no Hoare annotation was computed. [2019-11-28 16:53:44,165 INFO L246 CegarLoopResult]: For program point L55(lines 55 56) no Hoare annotation was computed. [2019-11-28 16:53:44,166 INFO L246 CegarLoopResult]: For program point L97-1(lines 97 101) no Hoare annotation was computed. [2019-11-28 16:53:44,166 INFO L242 CegarLoopResult]: At program point L97-2(lines 97 101) the Hoare annotation is: false [2019-11-28 16:53:44,166 INFO L246 CegarLoopResult]: For program point L122(line 122) no Hoare annotation was computed. [2019-11-28 16:53:44,166 INFO L246 CegarLoopResult]: For program point L89(lines 89 93) no Hoare annotation was computed. [2019-11-28 16:53:44,167 INFO L246 CegarLoopResult]: For program point L89-1(lines 82 95) no Hoare annotation was computed. [2019-11-28 16:53:44,167 INFO L246 CegarLoopResult]: For program point L89-2(lines 89 93) no Hoare annotation was computed. [2019-11-28 16:53:44,167 INFO L246 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2019-11-28 16:53:44,167 INFO L246 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 122) no Hoare annotation was computed. [2019-11-28 16:53:44,168 INFO L246 CegarLoopResult]: For program point L82(lines 82 108) no Hoare annotation was computed. [2019-11-28 16:53:44,168 INFO L246 CegarLoopResult]: For program point L49(lines 49 50) no Hoare annotation was computed. [2019-11-28 16:53:44,168 INFO L242 CegarLoopResult]: At program point L107(lines 36 109) the Hoare annotation is: (let ((.cse0 ((_ to_fp 8 24) currentRoundingMode ((_ to_fp 11 53) currentRoundingMode 1.0)))) (and (= ULTIMATE.start___ieee754_expf_~x (_ +zero 8 24)) (= ~one_exp~0 .cse0) (= |ULTIMATE.start___ieee754_expf_#res| (fp.add currentRoundingMode .cse0 (_ +zero 8 24))) (= currentRoundingMode roundNearestTiesToEven))) [2019-11-28 16:53:44,168 INFO L246 CegarLoopResult]: For program point L41-1(lines 41 45) no Hoare annotation was computed. [2019-11-28 16:53:44,169 INFO L242 CegarLoopResult]: At program point L41-2(lines 41 45) the Hoare annotation is: (and (= ULTIMATE.start___ieee754_expf_~x (_ +zero 8 24)) (= ~one_exp~0 ((_ to_fp 8 24) currentRoundingMode ((_ to_fp 11 53) currentRoundingMode 1.0))) (= ((_ to_fp 8 24) currentRoundingMode ((_ to_fp 11 53) currentRoundingMode 1000000000000000000000000000000.0)) ~huge_exp~0) (= currentRoundingMode roundNearestTiesToEven)) [2019-11-28 16:53:44,169 INFO L246 CegarLoopResult]: For program point L41-3(lines 41 45) no Hoare annotation was computed. [2019-11-28 16:53:44,169 INFO L246 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-28 16:53:44,170 INFO L246 CegarLoopResult]: For program point L58(lines 58 73) no Hoare annotation was computed. [2019-11-28 16:53:44,170 INFO L246 CegarLoopResult]: For program point L59(lines 59 68) no Hoare annotation was computed. [2019-11-28 16:53:44,170 INFO L246 CegarLoopResult]: For program point L59-2(lines 59 68) no Hoare annotation was computed. [2019-11-28 16:53:44,170 INFO L246 CegarLoopResult]: For program point L51(lines 51 52) no Hoare annotation was computed. [2019-11-28 16:53:44,170 INFO L246 CegarLoopResult]: For program point L84-1(lines 84 88) no Hoare annotation was computed. [2019-11-28 16:53:44,171 INFO L242 CegarLoopResult]: At program point L84-2(lines 84 88) the Hoare annotation is: false [2019-11-28 16:53:44,191 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2019-11-28 16:53:44,194 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-11-28 16:53:44,195 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-11-28 16:53:44,195 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-11-28 16:53:44,195 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-11-28 16:53:44,196 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-11-28 16:53:44,196 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-11-28 16:53:44,200 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2019-11-28 16:53:44,200 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-11-28 16:53:44,200 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-11-28 16:53:44,201 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-11-28 16:53:44,201 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-11-28 16:53:44,201 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-11-28 16:53:44,202 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-11-28 16:53:44,205 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2019-11-28 16:53:44,205 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-11-28 16:53:44,206 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-11-28 16:53:44,206 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-11-28 16:53:44,206 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-11-28 16:53:44,207 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-11-28 16:53:44,208 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2019-11-28 16:53:44,216 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-11-28 16:53:44,217 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-11-28 16:53:44,217 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-11-28 16:53:44,217 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-11-28 16:53:44,217 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-11-28 16:53:44,227 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 04:53:44 BoogieIcfgContainer [2019-11-28 16:53:44,228 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-28 16:53:44,228 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-28 16:53:44,228 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-28 16:53:44,228 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-28 16:53:44,233 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:53:15" (3/4) ... [2019-11-28 16:53:44,242 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-11-28 16:53:44,255 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2019-11-28 16:53:44,256 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2019-11-28 16:53:44,256 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2019-11-28 16:53:44,286 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((x == ~Pluszero~LONGDOUBLE() && one_exp == ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 1.0))) && \result == ~fp.add~FLOAT(unknown-currentRoundingMode-unknown, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 1.0)), ~Pluszero~LONGDOUBLE())) && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven [2019-11-28 16:53:44,337 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-11-28 16:53:44,337 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-28 16:53:44,339 INFO L168 Benchmark]: Toolchain (without parser) took 38277.96 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 147.8 MB). Free memory was 952.3 MB in the beginning and 950.3 MB in the end (delta: 2.0 MB). Peak memory consumption was 149.8 MB. Max. memory is 11.5 GB. [2019-11-28 16:53:44,339 INFO L168 Benchmark]: CDTParser took 0.32 ms. Allocated memory is still 1.0 GB. Free memory is still 981.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 16:53:44,340 INFO L168 Benchmark]: CACSL2BoogieTranslator took 463.16 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 147.8 MB). Free memory was 952.3 MB in the beginning and 1.1 GB in the end (delta: -185.8 MB). Peak memory consumption was 21.5 MB. Max. memory is 11.5 GB. [2019-11-28 16:53:44,340 INFO L168 Benchmark]: Boogie Procedure Inliner took 56.61 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. [2019-11-28 16:53:44,340 INFO L168 Benchmark]: Boogie Preprocessor took 45.46 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 16:53:44,341 INFO L168 Benchmark]: RCFGBuilder took 8716.52 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 37.3 MB). Peak memory consumption was 37.3 MB. Max. memory is 11.5 GB. [2019-11-28 16:53:44,341 INFO L168 Benchmark]: TraceAbstraction took 28882.23 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 956.9 MB in the end (delta: 137.3 MB). Peak memory consumption was 137.3 MB. Max. memory is 11.5 GB. [2019-11-28 16:53:44,342 INFO L168 Benchmark]: Witness Printer took 109.01 ms. Allocated memory is still 1.2 GB. Free memory was 956.9 MB in the beginning and 950.3 MB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. [2019-11-28 16:53:44,344 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32 ms. Allocated memory is still 1.0 GB. Free memory is still 981.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 463.16 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 147.8 MB). Free memory was 952.3 MB in the beginning and 1.1 GB in the end (delta: -185.8 MB). Peak memory consumption was 21.5 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 56.61 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 45.46 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 8716.52 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 37.3 MB). Peak memory consumption was 37.3 MB. Max. memory is 11.5 GB. * TraceAbstraction took 28882.23 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 956.9 MB in the end (delta: 137.3 MB). Peak memory consumption was 137.3 MB. Max. memory is 11.5 GB. * Witness Printer took 109.01 ms. Allocated memory is still 1.2 GB. Free memory was 956.9 MB in the beginning and 950.3 MB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 122]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 97]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 36]: Loop Invariant [2019-11-28 16:53:44,351 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2019-11-28 16:53:44,351 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-11-28 16:53:44,351 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-11-28 16:53:44,351 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-11-28 16:53:44,352 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-11-28 16:53:44,352 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-11-28 16:53:44,352 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-11-28 16:53:44,353 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2019-11-28 16:53:44,353 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-11-28 16:53:44,353 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-11-28 16:53:44,353 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-11-28 16:53:44,354 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-11-28 16:53:44,354 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-11-28 16:53:44,354 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode Derived loop invariant: ((x == ~Pluszero~LONGDOUBLE() && one_exp == ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 1.0))) && \result == ~fp.add~FLOAT(unknown-currentRoundingMode-unknown, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 1.0)), ~Pluszero~LONGDOUBLE())) && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven - InvariantResult [Line: 41]: Loop Invariant [2019-11-28 16:53:44,355 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2019-11-28 16:53:44,355 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-11-28 16:53:44,355 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-11-28 16:53:44,355 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-11-28 16:53:44,356 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-11-28 16:53:44,356 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-11-28 16:53:44,356 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2019-11-28 16:53:44,356 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-11-28 16:53:44,357 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-11-28 16:53:44,357 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-11-28 16:53:44,357 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-11-28 16:53:44,357 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode Derived loop invariant: ((x == ~Pluszero~LONGDOUBLE() && one_exp == ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 1.0))) && ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 1.0E30)) == huge_exp) && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven - InvariantResult [Line: 84]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 111]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 36 locations, 1 error locations. Result: SAFE, OverallTime: 28.6s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 22.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, HoareTripleCheckerStatistics: 102 SDtfs, 91 SDslu, 171 SDs, 0 SdLazy, 57 SolverSat, 5 SolverUnsat, 8 SolverUnknown, 0 SolverNotchecked, 21.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 94 GetRequests, 70 SyntacticMatches, 2 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 1.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=36occurred 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, 4 MinimizatonAttempts, 4 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 5 LocationsWithAnnotation, 5 PreInvPairs, 8 NumberOfFragments, 48 HoareAnnotationTreeSize, 5 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 5 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 2.4s SatisfiabilityAnalysisTime, 2.1s InterpolantComputationTime, 49 NumberOfCodeBlocks, 49 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 90 ConstructedInterpolants, 2 QuantifiedInterpolants, 9500 SizeOfPredicates, 19 NumberOfNonLiveVariables, 257 ConjunctsInSsa, 24 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...