./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/float-newlib/double_req_bl_1232a.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9a8b2e8d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/float-newlib/double_req_bl_1232a.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 2f0e84dafea36c954c87753335c0002922188c68 .................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/float-newlib/double_req_bl_1232a.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 2f0e84dafea36c954c87753335c0002922188c68 ..................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.25-9a8b2e8 [2020-10-20 00:33:20,160 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 00:33:20,163 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 00:33:20,210 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 00:33:20,210 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 00:33:20,221 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 00:33:20,223 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 00:33:20,233 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 00:33:20,237 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 00:33:20,238 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 00:33:20,240 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 00:33:20,243 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 00:33:20,243 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 00:33:20,245 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 00:33:20,245 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 00:33:20,250 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 00:33:20,252 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 00:33:20,253 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 00:33:20,256 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 00:33:20,258 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 00:33:20,261 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 00:33:20,263 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 00:33:20,265 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 00:33:20,266 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 00:33:20,272 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 00:33:20,275 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 00:33:20,275 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 00:33:20,276 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 00:33:20,277 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 00:33:20,278 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 00:33:20,278 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 00:33:20,280 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 00:33:20,281 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 00:33:20,281 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 00:33:20,283 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 00:33:20,283 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 00:33:20,284 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 00:33:20,284 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 00:33:20,284 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 00:33:20,285 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 00:33:20,287 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 00:33:20,287 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-20 00:33:20,336 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 00:33:20,336 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 00:33:20,338 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 00:33:20,338 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 00:33:20,338 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 00:33:20,339 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 00:33:20,339 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-20 00:33:20,339 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-20 00:33:20,339 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-20 00:33:20,339 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 00:33:20,340 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-20 00:33:20,341 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-20 00:33:20,341 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-20 00:33:20,341 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-20 00:33:20,341 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-20 00:33:20,342 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 00:33:20,342 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-20 00:33:20,342 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 00:33:20,342 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 00:33:20,342 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-20 00:33:20,343 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-20 00:33:20,343 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 00:33:20,343 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 00:33:20,343 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-20 00:33:20,343 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-20 00:33:20,344 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-20 00:33:20,344 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-20 00:33:20,344 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-20 00:33:20,344 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 00:33:20,344 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2f0e84dafea36c954c87753335c0002922188c68 [2020-10-20 00:33:20,545 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 00:33:20,565 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 00:33:20,569 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 00:33:20,570 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 00:33:20,571 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 00:33:20,572 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/double_req_bl_1232a.c [2020-10-20 00:33:20,642 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/44385ebf1/ee02d93406b24c63aa8a241e6a5fd24e/FLAG9ae661e5f [2020-10-20 00:33:21,093 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 00:33:21,094 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_1232a.c [2020-10-20 00:33:21,105 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/44385ebf1/ee02d93406b24c63aa8a241e6a5fd24e/FLAG9ae661e5f [2020-10-20 00:33:21,424 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/44385ebf1/ee02d93406b24c63aa8a241e6a5fd24e [2020-10-20 00:33:21,427 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 00:33:21,434 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-20 00:33:21,435 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 00:33:21,435 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 00:33:21,439 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 00:33:21,440 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 12:33:21" (1/1) ... [2020-10-20 00:33:21,443 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c7a5f1d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:33:21, skipping insertion in model container [2020-10-20 00:33:21,443 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 12:33:21" (1/1) ... [2020-10-20 00:33:21,451 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 00:33:21,472 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 00:33:21,723 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 00:33:21,734 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 00:33:21,764 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 00:33:21,783 INFO L208 MainTranslator]: Completed translation [2020-10-20 00:33:21,784 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:33:21 WrapperNode [2020-10-20 00:33:21,784 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 00:33:21,785 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-20 00:33:21,785 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-20 00:33:21,786 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-20 00:33:21,795 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:33:21" (1/1) ... [2020-10-20 00:33:21,806 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:33:21" (1/1) ... [2020-10-20 00:33:21,849 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-20 00:33:21,849 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 00:33:21,849 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 00:33:21,850 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 00:33:21,858 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:33:21" (1/1) ... [2020-10-20 00:33:21,858 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:33:21" (1/1) ... [2020-10-20 00:33:21,862 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:33:21" (1/1) ... [2020-10-20 00:33:21,862 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:33:21" (1/1) ... [2020-10-20 00:33:21,871 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:33:21" (1/1) ... [2020-10-20 00:33:21,876 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:33:21" (1/1) ... [2020-10-20 00:33:21,878 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:33:21" (1/1) ... [2020-10-20 00:33:21,882 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 00:33:21,882 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 00:33:21,883 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 00:33:21,883 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 00:33:21,884 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:33:21" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 00:33:21,943 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-20 00:33:21,943 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-20 00:33:21,943 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-20 00:33:21,944 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 00:33:21,945 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 00:33:21,945 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-20 00:33:21,945 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-20 00:33:22,387 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 00:33:22,388 INFO L298 CfgBuilder]: Removed 20 assume(true) statements. [2020-10-20 00:33:22,393 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:33:22 BoogieIcfgContainer [2020-10-20 00:33:22,393 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 00:33:22,394 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-20 00:33:22,395 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-20 00:33:22,398 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-20 00:33:22,399 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 12:33:21" (1/3) ... [2020-10-20 00:33:22,399 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58793a43 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 12:33:22, skipping insertion in model container [2020-10-20 00:33:22,400 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:33:21" (2/3) ... [2020-10-20 00:33:22,400 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58793a43 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 12:33:22, skipping insertion in model container [2020-10-20 00:33:22,400 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:33:22" (3/3) ... [2020-10-20 00:33:22,402 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1232a.c [2020-10-20 00:33:22,413 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-20 00:33:22,420 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-20 00:33:22,435 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-20 00:33:22,457 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-20 00:33:22,457 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-20 00:33:22,457 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-20 00:33:22,457 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 00:33:22,458 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 00:33:22,458 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-20 00:33:22,458 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 00:33:22,458 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-20 00:33:22,474 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2020-10-20 00:33:22,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-20 00:33:22,481 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:33:22,482 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 00:33:22,483 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:33:22,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:33:22,489 INFO L82 PathProgramCache]: Analyzing trace with hash -958075201, now seen corresponding path program 1 times [2020-10-20 00:33:22,500 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 00:33:22,500 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [325224713] [2020-10-20 00:33:22,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 00:33:22,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 00:33:22,640 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 00:33:22,641 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [325224713] [2020-10-20 00:33:22,642 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 00:33:22,642 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-20 00:33:22,658 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749767025] [2020-10-20 00:33:22,664 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-20 00:33:22,665 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 00:33:22,677 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-20 00:33:22,677 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-20 00:33:22,680 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 2 states. [2020-10-20 00:33:22,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 00:33:22,702 INFO L93 Difference]: Finished difference Result 63 states and 99 transitions. [2020-10-20 00:33:22,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-20 00:33:22,704 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-10-20 00:33:22,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 00:33:22,716 INFO L225 Difference]: With dead ends: 63 [2020-10-20 00:33:22,716 INFO L226 Difference]: Without dead ends: 29 [2020-10-20 00:33:22,719 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-20 00:33:22,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-10-20 00:33:22,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-10-20 00:33:22,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-20 00:33:22,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 40 transitions. [2020-10-20 00:33:22,760 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 40 transitions. Word has length 10 [2020-10-20 00:33:22,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 00:33:22,760 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 40 transitions. [2020-10-20 00:33:22,760 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-20 00:33:22,761 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 40 transitions. [2020-10-20 00:33:22,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-20 00:33:22,761 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:33:22,762 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 00:33:22,762 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-20 00:33:22,762 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:33:22,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:33:22,763 INFO L82 PathProgramCache]: Analyzing trace with hash 1001584898, now seen corresponding path program 1 times [2020-10-20 00:33:22,763 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 00:33:22,763 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47169713] [2020-10-20 00:33:22,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 00:33:22,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 00:33:22,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 00:33:22,858 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [47169713] [2020-10-20 00:33:22,858 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 00:33:22,859 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-20 00:33:22,859 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450821810] [2020-10-20 00:33:22,861 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-20 00:33:22,861 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 00:33:22,861 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 00:33:22,862 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-20 00:33:22,862 INFO L87 Difference]: Start difference. First operand 29 states and 40 transitions. Second operand 4 states. [2020-10-20 00:33:22,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 00:33:22,934 INFO L93 Difference]: Finished difference Result 53 states and 67 transitions. [2020-10-20 00:33:22,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-20 00:33:22,935 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-10-20 00:33:22,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 00:33:22,937 INFO L225 Difference]: With dead ends: 53 [2020-10-20 00:33:22,945 INFO L226 Difference]: Without dead ends: 44 [2020-10-20 00:33:22,946 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-20 00:33:22,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-10-20 00:33:22,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 31. [2020-10-20 00:33:22,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-10-20 00:33:22,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 42 transitions. [2020-10-20 00:33:22,954 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 42 transitions. Word has length 11 [2020-10-20 00:33:22,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 00:33:22,954 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 42 transitions. [2020-10-20 00:33:22,954 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-20 00:33:22,954 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 42 transitions. [2020-10-20 00:33:22,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-20 00:33:22,958 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:33:22,958 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 00:33:22,959 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-20 00:33:22,959 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:33:22,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:33:22,959 INFO L82 PathProgramCache]: Analyzing trace with hash 502201410, now seen corresponding path program 1 times [2020-10-20 00:33:22,960 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 00:33:22,961 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [297372367] [2020-10-20 00:33:22,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 00:33:22,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 00:33:23,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 00:33:23,027 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [297372367] [2020-10-20 00:33:23,027 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 00:33:23,027 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-20 00:33:23,027 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221604268] [2020-10-20 00:33:23,028 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-20 00:33:23,028 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 00:33:23,028 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 00:33:23,029 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-20 00:33:23,029 INFO L87 Difference]: Start difference. First operand 31 states and 42 transitions. Second operand 4 states. [2020-10-20 00:33:23,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 00:33:23,133 INFO L93 Difference]: Finished difference Result 55 states and 69 transitions. [2020-10-20 00:33:23,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-20 00:33:23,135 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-10-20 00:33:23,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 00:33:23,136 INFO L225 Difference]: With dead ends: 55 [2020-10-20 00:33:23,136 INFO L226 Difference]: Without dead ends: 46 [2020-10-20 00:33:23,136 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-20 00:33:23,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-10-20 00:33:23,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 31. [2020-10-20 00:33:23,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-10-20 00:33:23,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 42 transitions. [2020-10-20 00:33:23,149 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 42 transitions. Word has length 12 [2020-10-20 00:33:23,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 00:33:23,151 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 42 transitions. [2020-10-20 00:33:23,151 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-20 00:33:23,152 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 42 transitions. [2020-10-20 00:33:23,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-20 00:33:23,154 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:33:23,154 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 00:33:23,155 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-20 00:33:23,155 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:33:23,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:33:23,156 INFO L82 PathProgramCache]: Analyzing trace with hash -1951233721, now seen corresponding path program 1 times [2020-10-20 00:33:23,156 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 00:33:23,156 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1334191927] [2020-10-20 00:33:23,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 00:33:23,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 00:33:23,207 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 00:33:23,208 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1334191927] [2020-10-20 00:33:23,208 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 00:33:23,208 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-20 00:33:23,209 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705935969] [2020-10-20 00:33:23,209 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-20 00:33:23,209 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 00:33:23,209 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 00:33:23,221 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-20 00:33:23,221 INFO L87 Difference]: Start difference. First operand 31 states and 42 transitions. Second operand 4 states. [2020-10-20 00:33:23,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 00:33:23,278 INFO L93 Difference]: Finished difference Result 57 states and 71 transitions. [2020-10-20 00:33:23,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-20 00:33:23,279 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-10-20 00:33:23,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 00:33:23,280 INFO L225 Difference]: With dead ends: 57 [2020-10-20 00:33:23,281 INFO L226 Difference]: Without dead ends: 48 [2020-10-20 00:33:23,281 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-20 00:33:23,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-10-20 00:33:23,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 31. [2020-10-20 00:33:23,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-10-20 00:33:23,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 42 transitions. [2020-10-20 00:33:23,288 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 42 transitions. Word has length 13 [2020-10-20 00:33:23,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 00:33:23,288 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 42 transitions. [2020-10-20 00:33:23,288 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-20 00:33:23,288 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 42 transitions. [2020-10-20 00:33:23,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-20 00:33:23,289 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:33:23,289 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 00:33:23,290 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-20 00:33:23,290 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:33:23,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:33:23,291 INFO L82 PathProgramCache]: Analyzing trace with hash -555760345, now seen corresponding path program 1 times [2020-10-20 00:33:23,291 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 00:33:23,291 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1227926433] [2020-10-20 00:33:23,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 00:33:23,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 00:33:23,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 00:33:23,356 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1227926433] [2020-10-20 00:33:23,356 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 00:33:23,356 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-20 00:33:23,357 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133750532] [2020-10-20 00:33:23,357 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-20 00:33:23,357 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 00:33:23,358 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 00:33:23,358 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-20 00:33:23,358 INFO L87 Difference]: Start difference. First operand 31 states and 42 transitions. Second operand 4 states. [2020-10-20 00:33:23,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 00:33:23,410 INFO L93 Difference]: Finished difference Result 55 states and 69 transitions. [2020-10-20 00:33:23,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-20 00:33:23,411 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-10-20 00:33:23,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 00:33:23,412 INFO L225 Difference]: With dead ends: 55 [2020-10-20 00:33:23,412 INFO L226 Difference]: Without dead ends: 46 [2020-10-20 00:33:23,412 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-20 00:33:23,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-10-20 00:33:23,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 31. [2020-10-20 00:33:23,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-10-20 00:33:23,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 42 transitions. [2020-10-20 00:33:23,419 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 42 transitions. Word has length 14 [2020-10-20 00:33:23,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 00:33:23,419 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 42 transitions. [2020-10-20 00:33:23,419 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-20 00:33:23,420 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 42 transitions. [2020-10-20 00:33:23,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-20 00:33:23,421 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:33:23,421 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 00:33:23,421 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-20 00:33:23,422 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:33:23,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:33:23,422 INFO L82 PathProgramCache]: Analyzing trace with hash 1219247017, now seen corresponding path program 1 times [2020-10-20 00:33:23,422 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 00:33:23,423 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1239910019] [2020-10-20 00:33:23,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 00:33:23,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 00:33:23,464 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 00:33:23,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 00:33:23,485 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 00:33:23,513 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 00:33:23,514 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-20 00:33:23,514 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-20 00:33:23,552 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 12:33:23 BoogieIcfgContainer [2020-10-20 00:33:23,552 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-20 00:33:23,553 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 00:33:23,553 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 00:33:23,553 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 00:33:23,554 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:33:22" (3/4) ... [2020-10-20 00:33:23,557 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-10-20 00:33:23,557 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 00:33:23,560 INFO L168 Benchmark]: Toolchain (without parser) took 2130.12 ms. Allocated memory was 35.1 MB in the beginning and 50.3 MB in the end (delta: 15.2 MB). Free memory was 13.1 MB in the beginning and 26.3 MB in the end (delta: -13.2 MB). Peak memory consumption was 2.0 MB. Max. memory is 14.3 GB. [2020-10-20 00:33:23,562 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 33.6 MB. Free memory was 19.0 MB in the beginning and 19.0 MB in the end (delta: 34.6 kB). There was no memory consumed. Max. memory is 14.3 GB. [2020-10-20 00:33:23,563 INFO L168 Benchmark]: CACSL2BoogieTranslator took 349.56 ms. Allocated memory was 35.1 MB in the beginning and 44.0 MB in the end (delta: 8.9 MB). Free memory was 12.1 MB in the beginning and 22.8 MB in the end (delta: -10.6 MB). Peak memory consumption was 10.1 MB. Max. memory is 14.3 GB. [2020-10-20 00:33:23,564 INFO L168 Benchmark]: Boogie Procedure Inliner took 63.78 ms. Allocated memory is still 44.0 MB. Free memory was 22.8 MB in the beginning and 20.5 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 14.3 GB. [2020-10-20 00:33:23,565 INFO L168 Benchmark]: Boogie Preprocessor took 32.77 ms. Allocated memory is still 44.0 MB. Free memory was 20.5 MB in the beginning and 18.8 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 14.3 GB. [2020-10-20 00:33:23,566 INFO L168 Benchmark]: RCFGBuilder took 510.72 ms. Allocated memory was 44.0 MB in the beginning and 46.1 MB in the end (delta: 2.1 MB). Free memory was 18.8 MB in the beginning and 25.1 MB in the end (delta: -6.3 MB). Peak memory consumption was 9.6 MB. Max. memory is 14.3 GB. [2020-10-20 00:33:23,567 INFO L168 Benchmark]: TraceAbstraction took 1157.92 ms. Allocated memory was 46.1 MB in the beginning and 50.3 MB in the end (delta: 4.2 MB). Free memory was 24.6 MB in the beginning and 26.6 MB in the end (delta: -2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 14.3 GB. [2020-10-20 00:33:23,568 INFO L168 Benchmark]: Witness Printer took 4.44 ms. Allocated memory is still 50.3 MB. Free memory was 26.6 MB in the beginning and 26.3 MB in the end (delta: 384.1 kB). Peak memory consumption was 384.1 kB. Max. memory is 14.3 GB. [2020-10-20 00:33:23,573 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 33.6 MB. Free memory was 19.0 MB in the beginning and 19.0 MB in the end (delta: 34.6 kB). There was no memory consumed. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 349.56 ms. Allocated memory was 35.1 MB in the beginning and 44.0 MB in the end (delta: 8.9 MB). Free memory was 12.1 MB in the beginning and 22.8 MB in the end (delta: -10.6 MB). Peak memory consumption was 10.1 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 63.78 ms. Allocated memory is still 44.0 MB. Free memory was 22.8 MB in the beginning and 20.5 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 32.77 ms. Allocated memory is still 44.0 MB. Free memory was 20.5 MB in the beginning and 18.8 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 14.3 GB. * RCFGBuilder took 510.72 ms. Allocated memory was 44.0 MB in the beginning and 46.1 MB in the end (delta: 2.1 MB). Free memory was 18.8 MB in the beginning and 25.1 MB in the end (delta: -6.3 MB). Peak memory consumption was 9.6 MB. Max. memory is 14.3 GB. * TraceAbstraction took 1157.92 ms. Allocated memory was 46.1 MB in the beginning and 50.3 MB in the end (delta: 4.2 MB). Free memory was 24.6 MB in the beginning and 26.6 MB in the end (delta: -2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 14.3 GB. * Witness Printer took 4.44 ms. Allocated memory is still 50.3 MB. Free memory was 26.6 MB in the beginning and 26.3 MB in the end (delta: 384.1 kB). Peak memory consumption was 384.1 kB. Max. memory is 14.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 3]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 81, overapproximation of someUnaryDOUBLEoperation at line 77. Possible FailurePath: [L76] double x = 0.0; [L77] double y = -0.0; [L21] __uint32_t msw, lsw; [L24] ieee_double_shape_type ew_u; [L25] ew_u.value = (x) [L26] EXPR ew_u.parts.msw [L26] (msw) = ew_u.parts.msw [L27] EXPR ew_u.parts.lsw [L27] (lsw) = ew_u.parts.lsw [L30-L31] COND FALSE !((msw == 0x00000000 && lsw == 0x00000000) || (msw == 0x80000000 && lsw == 0x00000000)) [L33-L34] COND FALSE !((msw >= 0x00100000 && msw <= 0x7fefffff) || (msw >= 0x80100000 && msw <= 0xffefffff)) [L36-L37] COND FALSE !(( msw <= 0x000fffff) || (msw >= 0x80000000 && msw <= 0x800fffff)) [L40-L41] COND FALSE !((msw == 0x7ff00000 && lsw == 0x00000000) || (msw == 0xfff00000 && lsw == 0x00000000)) [L44] return 0; [L48] COND TRUE __fpclassify_double(x) == 0 [L49] return y; [L78] double res = fmin_double(x, y); [L81] EXPR res == -0.0 && __signbit_double(res) == 1 [L81] COND TRUE !(res == -0.0 && __signbit_double(res) == 1) [L3] __assert_fail("0", "double_req_bl_1232a.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 33 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.0s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 251 SDtfs, 64 SDslu, 298 SDs, 0 SdLazy, 84 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 22 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=33occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 60 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 74 NumberOfCodeBlocks, 74 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 55 ConstructedInterpolants, 0 QuantifiedInterpolants, 799 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.25-9a8b2e8 [2020-10-20 00:33:25,872 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 00:33:25,875 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 00:33:25,899 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 00:33:25,899 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 00:33:25,900 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 00:33:25,902 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 00:33:25,903 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 00:33:25,905 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 00:33:25,906 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 00:33:25,907 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 00:33:25,908 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 00:33:25,909 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 00:33:25,910 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 00:33:25,911 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 00:33:25,912 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 00:33:25,913 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 00:33:25,914 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 00:33:25,916 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 00:33:25,918 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 00:33:25,920 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 00:33:25,929 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 00:33:25,930 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 00:33:25,933 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 00:33:25,939 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 00:33:25,939 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 00:33:25,939 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 00:33:25,940 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 00:33:25,941 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 00:33:25,945 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 00:33:25,946 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 00:33:25,948 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 00:33:25,949 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 00:33:25,949 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 00:33:25,952 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 00:33:25,953 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 00:33:25,954 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 00:33:25,954 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 00:33:25,954 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 00:33:25,955 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 00:33:25,957 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 00:33:25,958 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-10-20 00:33:26,003 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 00:33:26,003 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 00:33:26,005 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 00:33:26,005 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 00:33:26,006 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 00:33:26,006 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 00:33:26,006 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-20 00:33:26,006 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-20 00:33:26,006 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 00:33:26,007 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-20 00:33:26,008 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-20 00:33:26,008 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-20 00:33:26,008 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-10-20 00:33:26,009 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-10-20 00:33:26,009 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-20 00:33:26,009 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-20 00:33:26,009 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 00:33:26,010 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-20 00:33:26,010 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 00:33:26,010 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 00:33:26,010 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-20 00:33:26,010 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-20 00:33:26,010 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 00:33:26,011 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 00:33:26,011 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-20 00:33:26,011 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-20 00:33:26,011 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-10-20 00:33:26,011 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-10-20 00:33:26,012 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-20 00:33:26,012 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 00:33:26,012 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-20 00:33:26,012 INFO L138 SettingsManager]: * Logic for external solver=AUFBV Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2f0e84dafea36c954c87753335c0002922188c68 [2020-10-20 00:33:26,237 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 00:33:26,250 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 00:33:26,253 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 00:33:26,255 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 00:33:26,255 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 00:33:26,256 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/double_req_bl_1232a.c [2020-10-20 00:33:26,333 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9a0172349/30becf780ebb422fbacb659b114f2182/FLAG79c22d486 [2020-10-20 00:33:26,822 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 00:33:26,822 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_1232a.c [2020-10-20 00:33:26,830 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9a0172349/30becf780ebb422fbacb659b114f2182/FLAG79c22d486 [2020-10-20 00:33:27,173 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9a0172349/30becf780ebb422fbacb659b114f2182 [2020-10-20 00:33:27,176 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 00:33:27,184 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-20 00:33:27,185 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 00:33:27,185 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 00:33:27,188 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 00:33:27,189 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 12:33:27" (1/1) ... [2020-10-20 00:33:27,192 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7c0dd090 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:33:27, skipping insertion in model container [2020-10-20 00:33:27,193 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 12:33:27" (1/1) ... [2020-10-20 00:33:27,200 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 00:33:27,220 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 00:33:27,483 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 00:33:27,499 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 00:33:27,529 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 00:33:27,556 INFO L208 MainTranslator]: Completed translation [2020-10-20 00:33:27,556 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:33:27 WrapperNode [2020-10-20 00:33:27,556 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 00:33:27,557 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-20 00:33:27,557 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-20 00:33:27,557 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-20 00:33:27,566 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:33:27" (1/1) ... [2020-10-20 00:33:27,587 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:33:27" (1/1) ... [2020-10-20 00:33:27,611 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-20 00:33:27,611 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 00:33:27,611 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 00:33:27,611 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 00:33:27,622 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:33:27" (1/1) ... [2020-10-20 00:33:27,622 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:33:27" (1/1) ... [2020-10-20 00:33:27,626 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:33:27" (1/1) ... [2020-10-20 00:33:27,627 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:33:27" (1/1) ... [2020-10-20 00:33:27,642 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:33:27" (1/1) ... [2020-10-20 00:33:27,648 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:33:27" (1/1) ... [2020-10-20 00:33:27,653 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:33:27" (1/1) ... [2020-10-20 00:33:27,660 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 00:33:27,663 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 00:33:27,663 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 00:33:27,663 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 00:33:27,664 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:33:27" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 00:33:27,731 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2020-10-20 00:33:27,731 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-10-20 00:33:27,731 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-20 00:33:27,731 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-10-20 00:33:27,731 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 00:33:27,731 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 00:33:27,732 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-20 00:33:28,183 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 00:33:28,184 INFO L298 CfgBuilder]: Removed 20 assume(true) statements. [2020-10-20 00:33:28,186 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:33:28 BoogieIcfgContainer [2020-10-20 00:33:28,186 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 00:33:28,188 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-20 00:33:28,188 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-20 00:33:28,191 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-20 00:33:28,192 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 12:33:27" (1/3) ... [2020-10-20 00:33:28,193 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14db4d66 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 12:33:28, skipping insertion in model container [2020-10-20 00:33:28,193 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:33:27" (2/3) ... [2020-10-20 00:33:28,194 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14db4d66 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 12:33:28, skipping insertion in model container [2020-10-20 00:33:28,194 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:33:28" (3/3) ... [2020-10-20 00:33:28,196 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1232a.c [2020-10-20 00:33:28,210 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-20 00:33:28,218 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-20 00:33:28,233 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-20 00:33:28,263 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-20 00:33:28,263 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-20 00:33:28,263 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-20 00:33:28,264 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 00:33:28,264 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 00:33:28,264 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-20 00:33:28,264 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 00:33:28,264 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-20 00:33:28,281 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2020-10-20 00:33:28,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-20 00:33:28,287 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:33:28,288 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 00:33:28,289 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:33:28,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:33:28,297 INFO L82 PathProgramCache]: Analyzing trace with hash -958075201, now seen corresponding path program 1 times [2020-10-20 00:33:28,311 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 00:33:28,312 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1847448320] [2020-10-20 00:33:28,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2020-10-20 00:33:28,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 00:33:28,430 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 1 conjunts are in the unsatisfiable core [2020-10-20 00:33:28,435 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 00:33:28,450 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 00:33:28,451 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-20 00:33:28,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 00:33:28,456 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1847448320] [2020-10-20 00:33:28,457 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-20 00:33:28,457 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-10-20 00:33:28,458 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015303881] [2020-10-20 00:33:28,464 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-20 00:33:28,464 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-20 00:33:28,478 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-20 00:33:28,479 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-20 00:33:28,481 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 2 states. [2020-10-20 00:33:28,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 00:33:28,504 INFO L93 Difference]: Finished difference Result 63 states and 99 transitions. [2020-10-20 00:33:28,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-20 00:33:28,506 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-10-20 00:33:28,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 00:33:28,518 INFO L225 Difference]: With dead ends: 63 [2020-10-20 00:33:28,518 INFO L226 Difference]: Without dead ends: 29 [2020-10-20 00:33:28,523 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-20 00:33:28,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-10-20 00:33:28,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-10-20 00:33:28,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-20 00:33:28,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 40 transitions. [2020-10-20 00:33:28,557 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 40 transitions. Word has length 10 [2020-10-20 00:33:28,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 00:33:28,558 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 40 transitions. [2020-10-20 00:33:28,558 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-20 00:33:28,558 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 40 transitions. [2020-10-20 00:33:28,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-20 00:33:28,559 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:33:28,559 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 00:33:28,767 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-10-20 00:33:28,771 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:33:28,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:33:28,772 INFO L82 PathProgramCache]: Analyzing trace with hash 1001584898, now seen corresponding path program 1 times [2020-10-20 00:33:28,773 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 00:33:28,773 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1712642653] [2020-10-20 00:33:28,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2020-10-20 00:33:28,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 00:33:28,889 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 3 conjunts are in the unsatisfiable core [2020-10-20 00:33:28,891 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 00:33:28,937 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 00:33:28,937 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-20 00:33:28,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 00:33:28,975 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1712642653] [2020-10-20 00:33:28,975 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-20 00:33:28,975 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2020-10-20 00:33:28,975 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380420389] [2020-10-20 00:33:28,982 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-20 00:33:28,983 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-20 00:33:28,983 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-20 00:33:28,983 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-20 00:33:28,984 INFO L87 Difference]: Start difference. First operand 29 states and 40 transitions. Second operand 6 states. [2020-10-20 00:33:29,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 00:33:29,119 INFO L93 Difference]: Finished difference Result 68 states and 85 transitions. [2020-10-20 00:33:29,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-20 00:33:29,120 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2020-10-20 00:33:29,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 00:33:29,122 INFO L225 Difference]: With dead ends: 68 [2020-10-20 00:33:29,122 INFO L226 Difference]: Without dead ends: 59 [2020-10-20 00:33:29,123 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-20 00:33:29,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-10-20 00:33:29,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 31. [2020-10-20 00:33:29,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-10-20 00:33:29,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 42 transitions. [2020-10-20 00:33:29,133 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 42 transitions. Word has length 11 [2020-10-20 00:33:29,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 00:33:29,133 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 42 transitions. [2020-10-20 00:33:29,133 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-20 00:33:29,134 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 42 transitions. [2020-10-20 00:33:29,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-20 00:33:29,134 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:33:29,135 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 00:33:29,358 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-10-20 00:33:29,359 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:33:29,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:33:29,359 INFO L82 PathProgramCache]: Analyzing trace with hash 1219247017, now seen corresponding path program 1 times [2020-10-20 00:33:29,361 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 00:33:29,361 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [337249874] [2020-10-20 00:33:29,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2020-10-20 00:33:29,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 00:33:29,446 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-20 00:33:29,448 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 00:33:29,518 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 00:33:29,519 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-20 00:33:29,561 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 00:33:29,562 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [337249874] [2020-10-20 00:33:29,562 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-20 00:33:29,562 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2020-10-20 00:33:29,562 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396493787] [2020-10-20 00:33:29,563 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-20 00:33:29,564 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-20 00:33:29,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-20 00:33:29,564 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-20 00:33:29,564 INFO L87 Difference]: Start difference. First operand 31 states and 42 transitions. Second operand 6 states. [2020-10-20 00:33:29,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 00:33:29,706 INFO L93 Difference]: Finished difference Result 52 states and 69 transitions. [2020-10-20 00:33:29,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-20 00:33:29,706 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2020-10-20 00:33:29,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 00:33:29,707 INFO L225 Difference]: With dead ends: 52 [2020-10-20 00:33:29,707 INFO L226 Difference]: Without dead ends: 28 [2020-10-20 00:33:29,708 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-20 00:33:29,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-10-20 00:33:29,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-10-20 00:33:29,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-10-20 00:33:29,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 35 transitions. [2020-10-20 00:33:29,714 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 35 transitions. Word has length 14 [2020-10-20 00:33:29,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 00:33:29,715 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 35 transitions. [2020-10-20 00:33:29,715 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-20 00:33:29,715 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 35 transitions. [2020-10-20 00:33:29,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-20 00:33:29,716 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:33:29,716 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 00:33:29,929 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-10-20 00:33:29,931 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:33:29,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:33:29,931 INFO L82 PathProgramCache]: Analyzing trace with hash 1012446717, now seen corresponding path program 1 times [2020-10-20 00:33:29,932 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 00:33:29,933 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1446516982] [2020-10-20 00:33:29,933 INFO L95 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 [2020-10-20 00:33:30,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 00:33:30,043 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 3 conjunts are in the unsatisfiable core [2020-10-20 00:33:30,046 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 00:33:30,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 00:33:30,059 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-20 00:33:30,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 00:33:30,088 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1446516982] [2020-10-20 00:33:30,088 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-20 00:33:30,088 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2020-10-20 00:33:30,088 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704889519] [2020-10-20 00:33:30,089 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-20 00:33:30,089 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-20 00:33:30,089 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-20 00:33:30,090 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-20 00:33:30,090 INFO L87 Difference]: Start difference. First operand 28 states and 35 transitions. Second operand 6 states. [2020-10-20 00:33:30,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 00:33:30,277 INFO L93 Difference]: Finished difference Result 65 states and 76 transitions. [2020-10-20 00:33:30,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-20 00:33:30,278 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2020-10-20 00:33:30,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 00:33:30,279 INFO L225 Difference]: With dead ends: 65 [2020-10-20 00:33:30,280 INFO L226 Difference]: Without dead ends: 56 [2020-10-20 00:33:30,280 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-20 00:33:30,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-10-20 00:33:30,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 30. [2020-10-20 00:33:30,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-10-20 00:33:30,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 37 transitions. [2020-10-20 00:33:30,287 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 37 transitions. Word has length 16 [2020-10-20 00:33:30,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 00:33:30,287 INFO L481 AbstractCegarLoop]: Abstraction has 30 states and 37 transitions. [2020-10-20 00:33:30,287 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-20 00:33:30,288 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 37 transitions. [2020-10-20 00:33:30,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-20 00:33:30,289 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:33:30,289 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 00:33:30,503 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-10-20 00:33:30,504 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:33:30,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:33:30,504 INFO L82 PathProgramCache]: Analyzing trace with hash -414082333, now seen corresponding path program 1 times [2020-10-20 00:33:30,505 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 00:33:30,506 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [747579350] [2020-10-20 00:33:30,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 6 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with mathsat -unsat_core_generation=3 [2020-10-20 00:33:30,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 00:33:30,630 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-20 00:33:30,632 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 00:33:30,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 00:33:30,649 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-20 00:33:30,693 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 00:33:30,694 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [747579350] [2020-10-20 00:33:30,694 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-20 00:33:30,694 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2020-10-20 00:33:30,694 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784418705] [2020-10-20 00:33:30,695 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-20 00:33:30,695 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-20 00:33:30,696 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 00:33:30,696 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-20 00:33:30,696 INFO L87 Difference]: Start difference. First operand 30 states and 37 transitions. Second operand 4 states. [2020-10-20 00:33:30,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 00:33:30,724 INFO L93 Difference]: Finished difference Result 40 states and 47 transitions. [2020-10-20 00:33:30,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-20 00:33:30,725 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2020-10-20 00:33:30,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 00:33:30,726 INFO L225 Difference]: With dead ends: 40 [2020-10-20 00:33:30,726 INFO L226 Difference]: Without dead ends: 30 [2020-10-20 00:33:30,727 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 30 SyntacticMatches, 2 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-20 00:33:30,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-10-20 00:33:30,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2020-10-20 00:33:30,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-10-20 00:33:30,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 36 transitions. [2020-10-20 00:33:30,732 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 36 transitions. Word has length 18 [2020-10-20 00:33:30,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 00:33:30,733 INFO L481 AbstractCegarLoop]: Abstraction has 30 states and 36 transitions. [2020-10-20 00:33:30,733 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-20 00:33:30,733 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 36 transitions. [2020-10-20 00:33:30,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-20 00:33:30,734 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:33:30,734 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 00:33:30,942 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2020-10-20 00:33:30,943 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:33:30,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:33:30,944 INFO L82 PathProgramCache]: Analyzing trace with hash -356824031, now seen corresponding path program 1 times [2020-10-20 00:33:30,945 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 00:33:30,945 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1422670113] [2020-10-20 00:33:30,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 7 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with mathsat -unsat_core_generation=3 [2020-10-20 00:33:31,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 00:33:31,067 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-20 00:33:31,069 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 00:33:31,121 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 00:33:31,121 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-20 00:33:31,174 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 00:33:31,175 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1422670113] [2020-10-20 00:33:31,175 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-20 00:33:31,175 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 9 [2020-10-20 00:33:31,176 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961036455] [2020-10-20 00:33:31,183 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-20 00:33:31,183 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-20 00:33:31,184 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-20 00:33:31,184 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-20 00:33:31,184 INFO L87 Difference]: Start difference. First operand 30 states and 36 transitions. Second operand 9 states. [2020-10-20 00:33:31,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 00:33:31,331 INFO L93 Difference]: Finished difference Result 42 states and 47 transitions. [2020-10-20 00:33:31,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-20 00:33:31,331 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 18 [2020-10-20 00:33:31,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 00:33:31,332 INFO L225 Difference]: With dead ends: 42 [2020-10-20 00:33:31,333 INFO L226 Difference]: Without dead ends: 39 [2020-10-20 00:33:31,334 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2020-10-20 00:33:31,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-10-20 00:33:31,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 32. [2020-10-20 00:33:31,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-10-20 00:33:31,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 38 transitions. [2020-10-20 00:33:31,340 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 38 transitions. Word has length 18 [2020-10-20 00:33:31,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 00:33:31,340 INFO L481 AbstractCegarLoop]: Abstraction has 32 states and 38 transitions. [2020-10-20 00:33:31,340 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-20 00:33:31,341 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 38 transitions. [2020-10-20 00:33:31,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-20 00:33:31,341 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:33:31,342 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 00:33:31,542 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 mathsat -unsat_core_generation=3 [2020-10-20 00:33:31,543 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:33:31,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:33:31,544 INFO L82 PathProgramCache]: Analyzing trace with hash -208358251, now seen corresponding path program 1 times [2020-10-20 00:33:31,544 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 00:33:31,545 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [528307976] [2020-10-20 00:33:31,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 8 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with mathsat -unsat_core_generation=3 [2020-10-20 00:33:31,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 00:33:31,633 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-20 00:33:31,636 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 00:33:31,691 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 00:33:31,692 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-20 00:33:31,713 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-20 00:33:31,838 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 00:33:31,839 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [528307976] [2020-10-20 00:33:31,839 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-20 00:33:31,839 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2020-10-20 00:33:31,839 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792231768] [2020-10-20 00:33:31,840 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-20 00:33:31,840 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-20 00:33:31,840 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-20 00:33:31,841 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-20 00:33:31,841 INFO L87 Difference]: Start difference. First operand 32 states and 38 transitions. Second operand 8 states. [2020-10-20 00:33:31,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 00:33:31,996 INFO L93 Difference]: Finished difference Result 45 states and 50 transitions. [2020-10-20 00:33:31,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-20 00:33:31,997 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-10-20 00:33:31,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 00:33:31,998 INFO L225 Difference]: With dead ends: 45 [2020-10-20 00:33:31,998 INFO L226 Difference]: Without dead ends: 27 [2020-10-20 00:33:31,999 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-10-20 00:33:31,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-10-20 00:33:32,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2020-10-20 00:33:32,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-10-20 00:33:32,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions. [2020-10-20 00:33:32,003 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 28 transitions. Word has length 19 [2020-10-20 00:33:32,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 00:33:32,004 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 28 transitions. [2020-10-20 00:33:32,004 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-20 00:33:32,004 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 28 transitions. [2020-10-20 00:33:32,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-20 00:33:32,005 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:33:32,005 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 00:33:32,218 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 mathsat -unsat_core_generation=3 [2020-10-20 00:33:32,218 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:33:32,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:33:32,219 INFO L82 PathProgramCache]: Analyzing trace with hash -1524231306, now seen corresponding path program 1 times [2020-10-20 00:33:32,220 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 00:33:32,220 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1377115598] [2020-10-20 00:33:32,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 9 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with mathsat -unsat_core_generation=3 [2020-10-20 00:33:32,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 00:33:32,359 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 15 conjunts are in the unsatisfiable core [2020-10-20 00:33:32,361 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 00:33:32,462 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 00:33:32,505 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 00:33:32,506 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-20 00:33:32,840 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 00:33:32,840 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1377115598] [2020-10-20 00:33:32,841 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-20 00:33:32,841 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10, 10] imperfect sequences [] total 16 [2020-10-20 00:33:32,841 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110381080] [2020-10-20 00:33:32,842 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-20 00:33:32,842 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-20 00:33:32,843 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-20 00:33:32,843 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=205, Unknown=0, NotChecked=0, Total=240 [2020-10-20 00:33:32,843 INFO L87 Difference]: Start difference. First operand 27 states and 28 transitions. Second operand 16 states. [2020-10-20 00:33:33,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 00:33:33,120 INFO L93 Difference]: Finished difference Result 27 states and 28 transitions. [2020-10-20 00:33:33,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-20 00:33:33,121 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 22 [2020-10-20 00:33:33,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 00:33:33,122 INFO L225 Difference]: With dead ends: 27 [2020-10-20 00:33:33,122 INFO L226 Difference]: Without dead ends: 0 [2020-10-20 00:33:33,124 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=104, Invalid=358, Unknown=0, NotChecked=0, Total=462 [2020-10-20 00:33:33,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-20 00:33:33,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-20 00:33:33,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-20 00:33:33,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-20 00:33:33,125 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 22 [2020-10-20 00:33:33,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 00:33:33,126 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-20 00:33:33,126 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-20 00:33:33,126 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-20 00:33:33,126 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-20 00:33:33,327 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 mathsat -unsat_core_generation=3 [2020-10-20 00:33:33,330 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-20 00:33:33,690 INFO L270 CegarLoopResult]: At program point L44(lines 20 45) the Hoare annotation is: (and (= ULTIMATE.start_fmin_double_~y (fp.neg (_ +zero 11 53))) (= ULTIMATE.start_fmin_double_~x (_ +zero 11 53)) (= (_ +zero 11 53) ULTIMATE.start___fpclassify_double_~x) (exists ((v_skolemized_v_prenex_1_3 (_ BitVec 64))) (and (= (_ +zero 11 53) (fp ((_ extract 63 63) v_skolemized_v_prenex_1_3) ((_ extract 62 52) v_skolemized_v_prenex_1_3) ((_ extract 51 0) v_skolemized_v_prenex_1_3))) (= ((_ extract 63 32) v_skolemized_v_prenex_1_3) ULTIMATE.start___fpclassify_double_~msw~0))) (not (= (_ bv0 32) |ULTIMATE.start___fpclassify_double_#res|))) [2020-10-20 00:33:33,690 INFO L270 CegarLoopResult]: At program point L44-1(lines 20 45) the Hoare annotation is: (let ((.cse0 (fp.neg (_ +zero 11 53)))) (and (= ULTIMATE.start_fmin_double_~y .cse0) (exists ((|v_skolemized_q#valueAsBitvector_7| (_ BitVec 64))) (and (= (fp ((_ extract 63 63) |v_skolemized_q#valueAsBitvector_7|) ((_ extract 62 52) |v_skolemized_q#valueAsBitvector_7|) ((_ extract 51 0) |v_skolemized_q#valueAsBitvector_7|)) (fp.neg (_ +zero 11 53))) (= ((_ extract 63 32) |v_skolemized_q#valueAsBitvector_7|) ULTIMATE.start___fpclassify_double_~msw~0))) (= ULTIMATE.start_fmin_double_~x (_ +zero 11 53)) (= ULTIMATE.start___fpclassify_double_~x .cse0) (not (= (_ bv0 32) |ULTIMATE.start___fpclassify_double_#res|)))) [2020-10-20 00:33:33,690 INFO L274 CegarLoopResult]: For program point L36(lines 36 44) no Hoare annotation was computed. [2020-10-20 00:33:33,690 INFO L274 CegarLoopResult]: For program point L36-1(lines 36 44) no Hoare annotation was computed. [2020-10-20 00:33:33,690 INFO L274 CegarLoopResult]: For program point L3(line 3) no Hoare annotation was computed. [2020-10-20 00:33:33,691 INFO L274 CegarLoopResult]: For program point L3-1(line 3) no Hoare annotation was computed. [2020-10-20 00:33:33,691 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-10-20 00:33:33,691 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-20 00:33:33,691 INFO L277 CegarLoopResult]: At program point L86(lines 68 87) the Hoare annotation is: true [2020-10-20 00:33:33,691 INFO L274 CegarLoopResult]: For program point L53(line 53) no Hoare annotation was computed. [2020-10-20 00:33:33,691 INFO L274 CegarLoopResult]: For program point L53-2(line 53) no Hoare annotation was computed. [2020-10-20 00:33:33,691 INFO L270 CegarLoopResult]: At program point L53-3(lines 47 54) the Hoare annotation is: (let ((.cse0 (fp.neg (_ +zero 11 53)))) (and (= |ULTIMATE.start_fmin_double_#res| .cse0) (= ULTIMATE.start_fmin_double_~y .cse0) (exists ((|v_skolemized_q#valueAsBitvector_7| (_ BitVec 64))) (and (= (fp ((_ extract 63 63) |v_skolemized_q#valueAsBitvector_7|) ((_ extract 62 52) |v_skolemized_q#valueAsBitvector_7|) ((_ extract 51 0) |v_skolemized_q#valueAsBitvector_7|)) (fp.neg (_ +zero 11 53))) (= ((_ extract 63 32) |v_skolemized_q#valueAsBitvector_7|) ULTIMATE.start___fpclassify_double_~msw~0))) (= ULTIMATE.start_fmin_double_~x (_ +zero 11 53)) (= ULTIMATE.start___fpclassify_double_~x .cse0))) [2020-10-20 00:33:33,692 INFO L274 CegarLoopResult]: For program point L23-1(lines 23 28) no Hoare annotation was computed. [2020-10-20 00:33:33,692 INFO L270 CegarLoopResult]: At program point L23-2(lines 23 28) the Hoare annotation is: (and (= ULTIMATE.start_fmin_double_~y (fp.neg (_ +zero 11 53))) (= ULTIMATE.start_fmin_double_~x (_ +zero 11 53)) (= (_ +zero 11 53) ULTIMATE.start___fpclassify_double_~x)) [2020-10-20 00:33:33,692 INFO L274 CegarLoopResult]: For program point L23-3(lines 20 45) no Hoare annotation was computed. [2020-10-20 00:33:33,692 INFO L274 CegarLoopResult]: For program point L23-5(lines 23 28) no Hoare annotation was computed. [2020-10-20 00:33:33,693 INFO L270 CegarLoopResult]: At program point L23-6(lines 23 28) the Hoare annotation is: (let ((.cse0 (fp.neg (_ +zero 11 53)))) (and (= ULTIMATE.start_fmin_double_~y .cse0) (= ULTIMATE.start_fmin_double_~x (_ +zero 11 53)) (= ULTIMATE.start___fpclassify_double_~x .cse0))) [2020-10-20 00:33:33,693 INFO L274 CegarLoopResult]: For program point L81(line 81) no Hoare annotation was computed. [2020-10-20 00:33:33,693 INFO L274 CegarLoopResult]: For program point L48(lines 48 49) no Hoare annotation was computed. [2020-10-20 00:33:33,693 INFO L274 CegarLoopResult]: For program point L23-7(lines 20 45) no Hoare annotation was computed. [2020-10-20 00:33:33,694 INFO L274 CegarLoopResult]: For program point L81-2(lines 81 84) no Hoare annotation was computed. [2020-10-20 00:33:33,694 INFO L274 CegarLoopResult]: For program point L40(lines 40 44) no Hoare annotation was computed. [2020-10-20 00:33:33,694 INFO L274 CegarLoopResult]: For program point L40-1(lines 40 44) no Hoare annotation was computed. [2020-10-20 00:33:33,694 INFO L270 CegarLoopResult]: At program point L65(lines 56 66) the Hoare annotation is: (let ((.cse0 (fp.neg (_ +zero 11 53)))) (and (exists ((v_skolemized_v_prenex_5_3 (_ BitVec 64))) (and (= (fp ((_ extract 63 63) v_skolemized_v_prenex_5_3) ((_ extract 62 52) v_skolemized_v_prenex_5_3) ((_ extract 51 0) v_skolemized_v_prenex_5_3)) (fp.neg (_ +zero 11 53))) (= ULTIMATE.start___signbit_double_~msw~1 ((_ extract 63 32) v_skolemized_v_prenex_5_3)))) |ULTIMATE.start_main_#t~short18| (= .cse0 ULTIMATE.start_main_~res~0) (= |ULTIMATE.start_fmin_double_#res| .cse0) (= ULTIMATE.start_fmin_double_~y .cse0) (exists ((|v_skolemized_q#valueAsBitvector_7| (_ BitVec 64))) (and (= (fp ((_ extract 63 63) |v_skolemized_q#valueAsBitvector_7|) ((_ extract 62 52) |v_skolemized_q#valueAsBitvector_7|) ((_ extract 51 0) |v_skolemized_q#valueAsBitvector_7|)) (fp.neg (_ +zero 11 53))) (= ((_ extract 63 32) |v_skolemized_q#valueAsBitvector_7|) ULTIMATE.start___fpclassify_double_~msw~0))) (= ULTIMATE.start_fmin_double_~x (_ +zero 11 53)) (= ULTIMATE.start___fpclassify_double_~x .cse0) (= ULTIMATE.start___signbit_double_~x .cse0) (= (bvadd |ULTIMATE.start___signbit_double_#res| (_ bv4294967295 32)) (_ bv0 32)))) [2020-10-20 00:33:33,695 INFO L274 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-10-20 00:33:33,695 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-10-20 00:33:33,695 INFO L274 CegarLoopResult]: For program point L33(lines 33 44) no Hoare annotation was computed. [2020-10-20 00:33:33,695 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-20 00:33:33,696 INFO L274 CegarLoopResult]: For program point L33-1(lines 33 44) no Hoare annotation was computed. [2020-10-20 00:33:33,696 INFO L274 CegarLoopResult]: For program point L50(lines 50 51) no Hoare annotation was computed. [2020-10-20 00:33:33,696 INFO L274 CegarLoopResult]: For program point L59-1(lines 59 63) no Hoare annotation was computed. [2020-10-20 00:33:33,696 INFO L270 CegarLoopResult]: At program point L59-2(lines 59 63) the Hoare annotation is: (let ((.cse0 (fp.neg (_ +zero 11 53)))) (and |ULTIMATE.start_main_#t~short18| (= .cse0 ULTIMATE.start_main_~res~0) (= |ULTIMATE.start_fmin_double_#res| .cse0) (= ULTIMATE.start_fmin_double_~y .cse0) (exists ((|v_skolemized_q#valueAsBitvector_7| (_ BitVec 64))) (and (= (fp ((_ extract 63 63) |v_skolemized_q#valueAsBitvector_7|) ((_ extract 62 52) |v_skolemized_q#valueAsBitvector_7|) ((_ extract 51 0) |v_skolemized_q#valueAsBitvector_7|)) (fp.neg (_ +zero 11 53))) (= ((_ extract 63 32) |v_skolemized_q#valueAsBitvector_7|) ULTIMATE.start___fpclassify_double_~msw~0))) (= ULTIMATE.start_fmin_double_~x (_ +zero 11 53)) (= ULTIMATE.start___fpclassify_double_~x .cse0) (= ULTIMATE.start___signbit_double_~x .cse0))) [2020-10-20 00:33:33,697 INFO L274 CegarLoopResult]: For program point L59-3(lines 59 63) no Hoare annotation was computed. [2020-10-20 00:33:33,713 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_7,QUANTIFIED] [2020-10-20 00:33:33,714 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_7,QUANTIFIED] [2020-10-20 00:33:33,715 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_7,QUANTIFIED] [2020-10-20 00:33:33,715 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_7,QUANTIFIED] [2020-10-20 00:33:33,716 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_7,QUANTIFIED] [2020-10-20 00:33:33,717 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_7,QUANTIFIED] [2020-10-20 00:33:33,717 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_7,QUANTIFIED] [2020-10-20 00:33:33,717 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_7,QUANTIFIED] [2020-10-20 00:33:33,719 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_v_prenex_5_3,QUANTIFIED] [2020-10-20 00:33:33,719 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_v_prenex_5_3,QUANTIFIED] [2020-10-20 00:33:33,720 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_v_prenex_5_3,QUANTIFIED] [2020-10-20 00:33:33,720 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_v_prenex_5_3,QUANTIFIED] [2020-10-20 00:33:33,720 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_7,QUANTIFIED] [2020-10-20 00:33:33,720 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_7,QUANTIFIED] [2020-10-20 00:33:33,721 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_7,QUANTIFIED] [2020-10-20 00:33:33,721 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_7,QUANTIFIED] [2020-10-20 00:33:33,722 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_v_prenex_5_3,QUANTIFIED] [2020-10-20 00:33:33,722 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_v_prenex_5_3,QUANTIFIED] [2020-10-20 00:33:33,723 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_v_prenex_5_3,QUANTIFIED] [2020-10-20 00:33:33,723 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_v_prenex_5_3,QUANTIFIED] [2020-10-20 00:33:33,723 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_7,QUANTIFIED] [2020-10-20 00:33:33,724 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_7,QUANTIFIED] [2020-10-20 00:33:33,724 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_7,QUANTIFIED] [2020-10-20 00:33:33,724 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_7,QUANTIFIED] [2020-10-20 00:33:33,726 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_v_prenex_1_3,QUANTIFIED] [2020-10-20 00:33:33,726 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_v_prenex_1_3,QUANTIFIED] [2020-10-20 00:33:33,727 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_v_prenex_1_3,QUANTIFIED] [2020-10-20 00:33:33,727 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_v_prenex_1_3,QUANTIFIED] [2020-10-20 00:33:33,727 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_v_prenex_1_3,QUANTIFIED] [2020-10-20 00:33:33,728 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_v_prenex_1_3,QUANTIFIED] [2020-10-20 00:33:33,728 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_v_prenex_1_3,QUANTIFIED] [2020-10-20 00:33:33,728 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_v_prenex_1_3,QUANTIFIED] [2020-10-20 00:33:33,729 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_7,QUANTIFIED] [2020-10-20 00:33:33,729 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_7,QUANTIFIED] [2020-10-20 00:33:33,729 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_7,QUANTIFIED] [2020-10-20 00:33:33,730 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_7,QUANTIFIED] [2020-10-20 00:33:33,730 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_7,QUANTIFIED] [2020-10-20 00:33:33,731 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_7,QUANTIFIED] [2020-10-20 00:33:33,731 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_7,QUANTIFIED] [2020-10-20 00:33:33,731 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_7,QUANTIFIED] [2020-10-20 00:33:33,732 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_7,QUANTIFIED] [2020-10-20 00:33:33,732 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_7,QUANTIFIED] [2020-10-20 00:33:33,732 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_7,QUANTIFIED] [2020-10-20 00:33:33,733 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_7,QUANTIFIED] [2020-10-20 00:33:33,733 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_7,QUANTIFIED] [2020-10-20 00:33:33,734 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_7,QUANTIFIED] [2020-10-20 00:33:33,734 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_7,QUANTIFIED] [2020-10-20 00:33:33,734 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_7,QUANTIFIED] [2020-10-20 00:33:33,737 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 12:33:33 BoogieIcfgContainer [2020-10-20 00:33:33,737 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-20 00:33:33,737 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 00:33:33,738 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 00:33:33,738 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 00:33:33,739 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:33:28" (3/4) ... [2020-10-20 00:33:33,742 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-10-20 00:33:33,756 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2020-10-20 00:33:33,757 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2020-10-20 00:33:33,757 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-10-20 00:33:33,757 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-20 00:33:33,790 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((y == ~fp.neg~DOUBLE(~Pluszero~LONGDOUBLE()) && x == ~Pluszero~LONGDOUBLE()) && ~Pluszero~LONGDOUBLE() == x) && (\exists v_skolemized_v_prenex_1_3 : bv64 :: ~Pluszero~LONGDOUBLE() == ~fp~LONGDOUBLE(v_skolemized_v_prenex_1_3[63:63], v_skolemized_v_prenex_1_3[62:52], v_skolemized_v_prenex_1_3[51:0]) && v_skolemized_v_prenex_1_3[63:32] == msw)) && !(0bv32 == \result) [2020-10-20 00:33:33,790 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((\result == ~fp.neg~DOUBLE(~Pluszero~LONGDOUBLE()) && y == ~fp.neg~DOUBLE(~Pluszero~LONGDOUBLE())) && (\exists v_skolemized_q#valueAsBitvector_7 : bv64 :: ~fp~LONGDOUBLE(v_skolemized_q#valueAsBitvector_7[63:63], v_skolemized_q#valueAsBitvector_7[62:52], v_skolemized_q#valueAsBitvector_7[51:0]) == ~fp.neg~DOUBLE(~Pluszero~LONGDOUBLE()) && v_skolemized_q#valueAsBitvector_7[63:32] == msw)) && x == ~Pluszero~LONGDOUBLE()) && x == ~fp.neg~DOUBLE(~Pluszero~LONGDOUBLE()) [2020-10-20 00:33:33,791 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((aux-res == -0.0 && __signbit_double(res) == 1-aux && ~fp.neg~DOUBLE(~Pluszero~LONGDOUBLE()) == res) && \result == ~fp.neg~DOUBLE(~Pluszero~LONGDOUBLE())) && y == ~fp.neg~DOUBLE(~Pluszero~LONGDOUBLE())) && (\exists v_skolemized_q#valueAsBitvector_7 : bv64 :: ~fp~LONGDOUBLE(v_skolemized_q#valueAsBitvector_7[63:63], v_skolemized_q#valueAsBitvector_7[62:52], v_skolemized_q#valueAsBitvector_7[51:0]) == ~fp.neg~DOUBLE(~Pluszero~LONGDOUBLE()) && v_skolemized_q#valueAsBitvector_7[63:32] == msw)) && x == ~Pluszero~LONGDOUBLE()) && x == ~fp.neg~DOUBLE(~Pluszero~LONGDOUBLE())) && x == ~fp.neg~DOUBLE(~Pluszero~LONGDOUBLE()) [2020-10-20 00:33:33,792 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((((((\exists v_skolemized_v_prenex_5_3 : bv64 :: ~fp~LONGDOUBLE(v_skolemized_v_prenex_5_3[63:63], v_skolemized_v_prenex_5_3[62:52], v_skolemized_v_prenex_5_3[51:0]) == ~fp.neg~DOUBLE(~Pluszero~LONGDOUBLE()) && msw == v_skolemized_v_prenex_5_3[63:32]) && aux-res == -0.0 && __signbit_double(res) == 1-aux) && ~fp.neg~DOUBLE(~Pluszero~LONGDOUBLE()) == res) && \result == ~fp.neg~DOUBLE(~Pluszero~LONGDOUBLE())) && y == ~fp.neg~DOUBLE(~Pluszero~LONGDOUBLE())) && (\exists v_skolemized_q#valueAsBitvector_7 : bv64 :: ~fp~LONGDOUBLE(v_skolemized_q#valueAsBitvector_7[63:63], v_skolemized_q#valueAsBitvector_7[62:52], v_skolemized_q#valueAsBitvector_7[51:0]) == ~fp.neg~DOUBLE(~Pluszero~LONGDOUBLE()) && v_skolemized_q#valueAsBitvector_7[63:32] == msw)) && x == ~Pluszero~LONGDOUBLE()) && x == ~fp.neg~DOUBLE(~Pluszero~LONGDOUBLE())) && x == ~fp.neg~DOUBLE(~Pluszero~LONGDOUBLE())) && ~bvadd64(\result, 4294967295bv32) == 0bv32 [2020-10-20 00:33:33,792 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((y == ~fp.neg~DOUBLE(~Pluszero~LONGDOUBLE()) && (\exists v_skolemized_q#valueAsBitvector_7 : bv64 :: ~fp~LONGDOUBLE(v_skolemized_q#valueAsBitvector_7[63:63], v_skolemized_q#valueAsBitvector_7[62:52], v_skolemized_q#valueAsBitvector_7[51:0]) == ~fp.neg~DOUBLE(~Pluszero~LONGDOUBLE()) && v_skolemized_q#valueAsBitvector_7[63:32] == msw)) && x == ~Pluszero~LONGDOUBLE()) && x == ~fp.neg~DOUBLE(~Pluszero~LONGDOUBLE())) && !(0bv32 == \result) [2020-10-20 00:33:33,825 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-20 00:33:33,825 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 00:33:33,828 INFO L168 Benchmark]: Toolchain (without parser) took 6649.53 ms. Allocated memory was 34.6 MB in the beginning and 55.1 MB in the end (delta: 20.4 MB). Free memory was 16.8 MB in the beginning and 14.4 MB in the end (delta: 2.4 MB). Peak memory consumption was 22.8 MB. Max. memory is 14.3 GB. [2020-10-20 00:33:33,829 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 33.6 MB. Free memory was 10.9 MB in the beginning and 10.9 MB in the end (delta: 45.7 kB). Peak memory consumption was 45.7 kB. Max. memory is 14.3 GB. [2020-10-20 00:33:33,829 INFO L168 Benchmark]: CACSL2BoogieTranslator took 371.85 ms. Allocated memory was 34.6 MB in the beginning and 43.0 MB in the end (delta: 8.4 MB). Free memory was 15.9 MB in the beginning and 22.9 MB in the end (delta: -7.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 14.3 GB. [2020-10-20 00:33:33,830 INFO L168 Benchmark]: Boogie Procedure Inliner took 53.86 ms. Allocated memory is still 43.0 MB. Free memory was 22.7 MB in the beginning and 20.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 14.3 GB. [2020-10-20 00:33:33,830 INFO L168 Benchmark]: Boogie Preprocessor took 49.21 ms. Allocated memory is still 43.0 MB. Free memory was 20.6 MB in the beginning and 18.7 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 14.3 GB. [2020-10-20 00:33:33,831 INFO L168 Benchmark]: RCFGBuilder took 523.77 ms. Allocated memory was 43.0 MB in the beginning and 44.6 MB in the end (delta: 1.6 MB). Free memory was 18.7 MB in the beginning and 23.4 MB in the end (delta: -4.7 MB). Peak memory consumption was 9.8 MB. Max. memory is 14.3 GB. [2020-10-20 00:33:33,832 INFO L168 Benchmark]: TraceAbstraction took 5549.47 ms. Allocated memory was 44.6 MB in the beginning and 55.1 MB in the end (delta: 10.5 MB). Free memory was 22.9 MB in the beginning and 19.4 MB in the end (delta: 3.5 MB). Peak memory consumption was 24.9 MB. Max. memory is 14.3 GB. [2020-10-20 00:33:33,832 INFO L168 Benchmark]: Witness Printer took 88.19 ms. Allocated memory is still 55.1 MB. Free memory was 19.4 MB in the beginning and 14.4 MB in the end (delta: 5.0 MB). Peak memory consumption was 5.0 MB. Max. memory is 14.3 GB. [2020-10-20 00:33:33,835 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 33.6 MB. Free memory was 10.9 MB in the beginning and 10.9 MB in the end (delta: 45.7 kB). Peak memory consumption was 45.7 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 371.85 ms. Allocated memory was 34.6 MB in the beginning and 43.0 MB in the end (delta: 8.4 MB). Free memory was 15.9 MB in the beginning and 22.9 MB in the end (delta: -7.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 53.86 ms. Allocated memory is still 43.0 MB. Free memory was 22.7 MB in the beginning and 20.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 49.21 ms. Allocated memory is still 43.0 MB. Free memory was 20.6 MB in the beginning and 18.7 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 14.3 GB. * RCFGBuilder took 523.77 ms. Allocated memory was 43.0 MB in the beginning and 44.6 MB in the end (delta: 1.6 MB). Free memory was 18.7 MB in the beginning and 23.4 MB in the end (delta: -4.7 MB). Peak memory consumption was 9.8 MB. Max. memory is 14.3 GB. * TraceAbstraction took 5549.47 ms. Allocated memory was 44.6 MB in the beginning and 55.1 MB in the end (delta: 10.5 MB). Free memory was 22.9 MB in the beginning and 19.4 MB in the end (delta: 3.5 MB). Peak memory consumption was 24.9 MB. Max. memory is 14.3 GB. * Witness Printer took 88.19 ms. Allocated memory is still 55.1 MB. Free memory was 19.4 MB in the beginning and 14.4 MB in the end (delta: 5.0 MB). Peak memory consumption was 5.0 MB. Max. memory is 14.3 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_7,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_7,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_7,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_7,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_7,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_7,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_7,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_7,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_v_prenex_5_3,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_v_prenex_5_3,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_v_prenex_5_3,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_v_prenex_5_3,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_7,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_7,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_7,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_7,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_v_prenex_5_3,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_v_prenex_5_3,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_v_prenex_5_3,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_v_prenex_5_3,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_7,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_7,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_7,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_7,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_v_prenex_1_3,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_v_prenex_1_3,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_v_prenex_1_3,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_v_prenex_1_3,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_v_prenex_1_3,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_v_prenex_1_3,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_v_prenex_1_3,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_v_prenex_1_3,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_7,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_7,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_7,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_7,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_7,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_7,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_7,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_7,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_7,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_7,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_7,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_7,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_7,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_7,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_7,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_7,QUANTIFIED] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 3]: 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: 23]: Loop Invariant Derived loop invariant: (y == ~fp.neg~DOUBLE(~Pluszero~LONGDOUBLE()) && x == ~Pluszero~LONGDOUBLE()) && ~Pluszero~LONGDOUBLE() == x - InvariantResult [Line: 20]: Loop Invariant [2020-10-20 00:33:33,851 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_7,QUANTIFIED] [2020-10-20 00:33:33,851 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_7,QUANTIFIED] [2020-10-20 00:33:33,852 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_7,QUANTIFIED] [2020-10-20 00:33:33,852 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_7,QUANTIFIED] [2020-10-20 00:33:33,852 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_7,QUANTIFIED] [2020-10-20 00:33:33,853 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_7,QUANTIFIED] [2020-10-20 00:33:33,853 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_7,QUANTIFIED] [2020-10-20 00:33:33,853 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_7,QUANTIFIED] Derived loop invariant: (((y == ~fp.neg~DOUBLE(~Pluszero~LONGDOUBLE()) && (\exists v_skolemized_q#valueAsBitvector_7 : bv64 :: ~fp~LONGDOUBLE(v_skolemized_q#valueAsBitvector_7[63:63], v_skolemized_q#valueAsBitvector_7[62:52], v_skolemized_q#valueAsBitvector_7[51:0]) == ~fp.neg~DOUBLE(~Pluszero~LONGDOUBLE()) && v_skolemized_q#valueAsBitvector_7[63:32] == msw)) && x == ~Pluszero~LONGDOUBLE()) && x == ~fp.neg~DOUBLE(~Pluszero~LONGDOUBLE())) && !(0bv32 == \result) - InvariantResult [Line: 68]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 56]: Loop Invariant [2020-10-20 00:33:33,854 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_v_prenex_5_3,QUANTIFIED] [2020-10-20 00:33:33,854 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_v_prenex_5_3,QUANTIFIED] [2020-10-20 00:33:33,855 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_v_prenex_5_3,QUANTIFIED] [2020-10-20 00:33:33,855 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_v_prenex_5_3,QUANTIFIED] [2020-10-20 00:33:33,855 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_7,QUANTIFIED] [2020-10-20 00:33:33,855 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_7,QUANTIFIED] [2020-10-20 00:33:33,856 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_7,QUANTIFIED] [2020-10-20 00:33:33,856 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_7,QUANTIFIED] [2020-10-20 00:33:33,857 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_v_prenex_5_3,QUANTIFIED] [2020-10-20 00:33:33,857 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_v_prenex_5_3,QUANTIFIED] [2020-10-20 00:33:33,857 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_v_prenex_5_3,QUANTIFIED] [2020-10-20 00:33:33,858 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_v_prenex_5_3,QUANTIFIED] [2020-10-20 00:33:33,858 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_7,QUANTIFIED] [2020-10-20 00:33:33,858 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_7,QUANTIFIED] [2020-10-20 00:33:33,858 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_7,QUANTIFIED] [2020-10-20 00:33:33,859 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_7,QUANTIFIED] Derived loop invariant: (((((((((\exists v_skolemized_v_prenex_5_3 : bv64 :: ~fp~LONGDOUBLE(v_skolemized_v_prenex_5_3[63:63], v_skolemized_v_prenex_5_3[62:52], v_skolemized_v_prenex_5_3[51:0]) == ~fp.neg~DOUBLE(~Pluszero~LONGDOUBLE()) && msw == v_skolemized_v_prenex_5_3[63:32]) && aux-res == -0.0 && __signbit_double(res) == 1-aux) && ~fp.neg~DOUBLE(~Pluszero~LONGDOUBLE()) == res) && \result == ~fp.neg~DOUBLE(~Pluszero~LONGDOUBLE())) && y == ~fp.neg~DOUBLE(~Pluszero~LONGDOUBLE())) && (\exists v_skolemized_q#valueAsBitvector_7 : bv64 :: ~fp~LONGDOUBLE(v_skolemized_q#valueAsBitvector_7[63:63], v_skolemized_q#valueAsBitvector_7[62:52], v_skolemized_q#valueAsBitvector_7[51:0]) == ~fp.neg~DOUBLE(~Pluszero~LONGDOUBLE()) && v_skolemized_q#valueAsBitvector_7[63:32] == msw)) && x == ~Pluszero~LONGDOUBLE()) && x == ~fp.neg~DOUBLE(~Pluszero~LONGDOUBLE())) && x == ~fp.neg~DOUBLE(~Pluszero~LONGDOUBLE())) && ~bvadd64(\result, 4294967295bv32) == 0bv32 - InvariantResult [Line: 23]: Loop Invariant Derived loop invariant: (y == ~fp.neg~DOUBLE(~Pluszero~LONGDOUBLE()) && x == ~Pluszero~LONGDOUBLE()) && x == ~fp.neg~DOUBLE(~Pluszero~LONGDOUBLE()) - InvariantResult [Line: 20]: Loop Invariant [2020-10-20 00:33:33,860 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_v_prenex_1_3,QUANTIFIED] [2020-10-20 00:33:33,860 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_v_prenex_1_3,QUANTIFIED] [2020-10-20 00:33:33,860 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_v_prenex_1_3,QUANTIFIED] [2020-10-20 00:33:33,861 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_v_prenex_1_3,QUANTIFIED] [2020-10-20 00:33:33,861 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_v_prenex_1_3,QUANTIFIED] [2020-10-20 00:33:33,861 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_v_prenex_1_3,QUANTIFIED] [2020-10-20 00:33:33,862 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_v_prenex_1_3,QUANTIFIED] [2020-10-20 00:33:33,862 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_v_prenex_1_3,QUANTIFIED] Derived loop invariant: (((y == ~fp.neg~DOUBLE(~Pluszero~LONGDOUBLE()) && x == ~Pluszero~LONGDOUBLE()) && ~Pluszero~LONGDOUBLE() == x) && (\exists v_skolemized_v_prenex_1_3 : bv64 :: ~Pluszero~LONGDOUBLE() == ~fp~LONGDOUBLE(v_skolemized_v_prenex_1_3[63:63], v_skolemized_v_prenex_1_3[62:52], v_skolemized_v_prenex_1_3[51:0]) && v_skolemized_v_prenex_1_3[63:32] == msw)) && !(0bv32 == \result) - InvariantResult [Line: 47]: Loop Invariant [2020-10-20 00:33:33,862 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_7,QUANTIFIED] [2020-10-20 00:33:33,863 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_7,QUANTIFIED] [2020-10-20 00:33:33,863 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_7,QUANTIFIED] [2020-10-20 00:33:33,863 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_7,QUANTIFIED] [2020-10-20 00:33:33,864 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_7,QUANTIFIED] [2020-10-20 00:33:33,864 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_7,QUANTIFIED] [2020-10-20 00:33:33,864 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_7,QUANTIFIED] [2020-10-20 00:33:33,864 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_7,QUANTIFIED] Derived loop invariant: (((\result == ~fp.neg~DOUBLE(~Pluszero~LONGDOUBLE()) && y == ~fp.neg~DOUBLE(~Pluszero~LONGDOUBLE())) && (\exists v_skolemized_q#valueAsBitvector_7 : bv64 :: ~fp~LONGDOUBLE(v_skolemized_q#valueAsBitvector_7[63:63], v_skolemized_q#valueAsBitvector_7[62:52], v_skolemized_q#valueAsBitvector_7[51:0]) == ~fp.neg~DOUBLE(~Pluszero~LONGDOUBLE()) && v_skolemized_q#valueAsBitvector_7[63:32] == msw)) && x == ~Pluszero~LONGDOUBLE()) && x == ~fp.neg~DOUBLE(~Pluszero~LONGDOUBLE()) - InvariantResult [Line: 59]: Loop Invariant [2020-10-20 00:33:33,865 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_7,QUANTIFIED] [2020-10-20 00:33:33,865 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_7,QUANTIFIED] [2020-10-20 00:33:33,865 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_7,QUANTIFIED] [2020-10-20 00:33:33,866 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_7,QUANTIFIED] [2020-10-20 00:33:33,877 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_7,QUANTIFIED] [2020-10-20 00:33:33,877 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_7,QUANTIFIED] [2020-10-20 00:33:33,878 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_7,QUANTIFIED] [2020-10-20 00:33:33,878 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_7,QUANTIFIED] Derived loop invariant: ((((((aux-res == -0.0 && __signbit_double(res) == 1-aux && ~fp.neg~DOUBLE(~Pluszero~LONGDOUBLE()) == res) && \result == ~fp.neg~DOUBLE(~Pluszero~LONGDOUBLE())) && y == ~fp.neg~DOUBLE(~Pluszero~LONGDOUBLE())) && (\exists v_skolemized_q#valueAsBitvector_7 : bv64 :: ~fp~LONGDOUBLE(v_skolemized_q#valueAsBitvector_7[63:63], v_skolemized_q#valueAsBitvector_7[62:52], v_skolemized_q#valueAsBitvector_7[51:0]) == ~fp.neg~DOUBLE(~Pluszero~LONGDOUBLE()) && v_skolemized_q#valueAsBitvector_7[63:32] == msw)) && x == ~Pluszero~LONGDOUBLE()) && x == ~fp.neg~DOUBLE(~Pluszero~LONGDOUBLE())) && x == ~fp.neg~DOUBLE(~Pluszero~LONGDOUBLE()) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 33 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 5.0s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 1.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.3s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 252 SDtfs, 287 SDslu, 527 SDs, 0 SdLazy, 183 SolverSat, 29 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 257 GetRequests, 196 SyntacticMatches, 3 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 1.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=33occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 8 MinimizatonAttempts, 61 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 8 PreInvPairs, 16 NumberOfFragments, 221 HoareAnnotationTreeSize, 8 FomulaSimplifications, 51 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 33 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 128 NumberOfCodeBlocks, 128 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 240 ConstructedInterpolants, 32 QuantifiedInterpolants, 21250 SizeOfPredicates, 38 NumberOfNonLiveVariables, 555 ConjunctsInSsa, 55 ConjunctsInUnsatCore, 16 InterpolantComputations, 16 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...