./Ultimate.py --spec /storage/repos/svcomp/c/properties/unreach-call.prp --file /storage/repos/svcomp/c/float-newlib/float_req_bl_1252b_false-unreach-call.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 91b1670e Calling Ultimate with: java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/svcomp/c/float-newlib/float_req_bl_1252b_false-unreach-call.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c8e4dbe5a9ab518912f1108432d43f490ec977d7 ................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/svcomp/c/float-newlib/float_req_bl_1252b_false-unreach-call.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c8e4dbe5a9ab518912f1108432d43f490ec977d7 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.1.24-91b1670 [2018-11-28 18:05:11,551 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-28 18:05:11,553 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-28 18:05:11,565 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-28 18:05:11,566 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-28 18:05:11,567 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-28 18:05:11,568 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-28 18:05:11,570 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-28 18:05:11,571 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-28 18:05:11,572 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-28 18:05:11,573 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-28 18:05:11,573 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-28 18:05:11,574 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-28 18:05:11,575 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-28 18:05:11,576 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-28 18:05:11,577 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-28 18:05:11,578 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-28 18:05:11,579 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-28 18:05:11,582 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-28 18:05:11,583 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-28 18:05:11,584 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-28 18:05:11,586 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-28 18:05:11,588 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-28 18:05:11,589 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-28 18:05:11,589 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-28 18:05:11,590 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-28 18:05:11,591 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-28 18:05:11,592 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-28 18:05:11,593 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-28 18:05:11,594 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-28 18:05:11,594 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-28 18:05:11,595 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-28 18:05:11,595 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-28 18:05:11,596 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-28 18:05:11,597 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-28 18:05:11,601 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-28 18:05:11,601 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-11-28 18:05:11,617 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-28 18:05:11,617 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-28 18:05:11,618 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-28 18:05:11,618 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-11-28 18:05:11,619 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-28 18:05:11,619 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-28 18:05:11,619 INFO L133 SettingsManager]: * Use SBE=true [2018-11-28 18:05:11,619 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-28 18:05:11,619 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-28 18:05:11,620 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-28 18:05:11,620 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-28 18:05:11,620 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-28 18:05:11,620 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-28 18:05:11,620 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-28 18:05:11,621 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-28 18:05:11,621 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-28 18:05:11,621 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-28 18:05:11,621 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-28 18:05:11,621 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-28 18:05:11,621 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-28 18:05:11,622 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-28 18:05:11,622 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-28 18:05:11,622 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-28 18:05:11,622 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-28 18:05:11,622 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-28 18:05:11,622 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-28 18:05:11,623 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-28 18:05:11,623 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-28 18:05:11,623 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-28 18:05:11,623 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-28 18:05:11,623 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c8e4dbe5a9ab518912f1108432d43f490ec977d7 [2018-11-28 18:05:11,668 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-28 18:05:11,688 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-28 18:05:11,696 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-28 18:05:11,698 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-28 18:05:11,699 INFO L276 PluginConnector]: CDTParser initialized [2018-11-28 18:05:11,699 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/float-newlib/float_req_bl_1252b_false-unreach-call.c [2018-11-28 18:05:11,767 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/04e8148dc/bc5373ce64a7463ca6394a9d210ec6b0/FLAG4a7382a97 [2018-11-28 18:05:12,264 INFO L307 CDTParser]: Found 1 translation units. [2018-11-28 18:05:12,264 INFO L161 CDTParser]: Scanning /storage/repos/svcomp/c/float-newlib/float_req_bl_1252b_false-unreach-call.c [2018-11-28 18:05:12,274 INFO L355 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/04e8148dc/bc5373ce64a7463ca6394a9d210ec6b0/FLAG4a7382a97 [2018-11-28 18:05:12,596 INFO L363 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/04e8148dc/bc5373ce64a7463ca6394a9d210ec6b0 [2018-11-28 18:05:12,599 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-28 18:05:12,600 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-28 18:05:12,602 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-28 18:05:12,602 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-28 18:05:12,608 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-28 18:05:12,609 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 06:05:12" (1/1) ... [2018-11-28 18:05:12,614 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@72637f54 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:05:12, skipping insertion in model container [2018-11-28 18:05:12,615 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 06:05:12" (1/1) ... [2018-11-28 18:05:12,624 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-28 18:05:12,648 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-28 18:05:12,872 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 18:05:12,880 INFO L191 MainTranslator]: Completed pre-run [2018-11-28 18:05:12,924 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 18:05:12,960 INFO L195 MainTranslator]: Completed translation [2018-11-28 18:05:12,960 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:05:12 WrapperNode [2018-11-28 18:05:12,960 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-28 18:05:12,961 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-28 18:05:12,961 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-28 18:05:12,962 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-28 18:05:12,971 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:05:12" (1/1) ... [2018-11-28 18:05:12,982 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:05:12" (1/1) ... [2018-11-28 18:05:12,993 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-28 18:05:12,994 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-28 18:05:12,995 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-28 18:05:12,995 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-28 18:05:13,005 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:05:12" (1/1) ... [2018-11-28 18:05:13,005 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:05:12" (1/1) ... [2018-11-28 18:05:13,008 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:05:12" (1/1) ... [2018-11-28 18:05:13,009 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:05:12" (1/1) ... [2018-11-28 18:05:13,019 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:05:12" (1/1) ... [2018-11-28 18:05:13,025 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:05:12" (1/1) ... [2018-11-28 18:05:13,027 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:05:12" (1/1) ... [2018-11-28 18:05:13,030 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-28 18:05:13,031 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-28 18:05:13,031 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-28 18:05:13,031 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-28 18:05:13,032 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:05:12" (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 [2018-11-28 18:05:13,154 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-28 18:05:13,155 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-28 18:05:13,155 INFO L130 BoogieDeclarations]: Found specification of procedure fmax_float [2018-11-28 18:05:13,155 INFO L138 BoogieDeclarations]: Found implementation of procedure fmax_float [2018-11-28 18:05:13,155 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_float [2018-11-28 18:05:13,155 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_float [2018-11-28 18:05:13,155 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-28 18:05:13,155 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-28 18:05:13,156 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2018-11-28 18:05:13,156 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-28 18:05:13,156 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-28 18:05:13,156 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-28 18:05:13,156 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-11-28 18:05:13,156 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_float [2018-11-28 18:05:13,156 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_float [2018-11-28 18:05:13,157 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-28 18:05:13,699 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-28 18:05:13,699 INFO L280 CfgBuilder]: Removed 4 assue(true) statements. [2018-11-28 18:05:13,700 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 06:05:13 BoogieIcfgContainer [2018-11-28 18:05:13,700 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-28 18:05:13,701 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-28 18:05:13,701 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-28 18:05:13,705 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-28 18:05:13,705 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 06:05:12" (1/3) ... [2018-11-28 18:05:13,706 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76422016 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 06:05:13, skipping insertion in model container [2018-11-28 18:05:13,706 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:05:12" (2/3) ... [2018-11-28 18:05:13,707 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76422016 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 06:05:13, skipping insertion in model container [2018-11-28 18:05:13,707 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 06:05:13" (3/3) ... [2018-11-28 18:05:13,709 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_1252b_false-unreach-call.c [2018-11-28 18:05:13,720 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-28 18:05:13,729 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-28 18:05:13,748 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-28 18:05:13,784 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-28 18:05:13,784 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-28 18:05:13,785 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-28 18:05:13,785 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-28 18:05:13,785 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-28 18:05:13,785 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-28 18:05:13,786 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-28 18:05:13,786 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-28 18:05:13,786 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-28 18:05:13,806 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states. [2018-11-28 18:05:13,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-11-28 18:05:13,813 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 18:05:13,814 INFO L402 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] [2018-11-28 18:05:13,816 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 18:05:13,822 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 18:05:13,823 INFO L82 PathProgramCache]: Analyzing trace with hash -278474869, now seen corresponding path program 1 times [2018-11-28 18:05:13,825 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 18:05:13,825 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 18:05:13,875 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 18:05:13,876 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 18:05:13,876 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 18:05:13,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 18:05:13,985 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 18:05:13,987 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 18:05:13,988 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-28 18:05:13,992 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-28 18:05:14,007 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-28 18:05:14,008 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-28 18:05:14,010 INFO L87 Difference]: Start difference. First operand 44 states. Second operand 2 states. [2018-11-28 18:05:14,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 18:05:14,036 INFO L93 Difference]: Finished difference Result 79 states and 107 transitions. [2018-11-28 18:05:14,036 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-28 18:05:14,038 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 22 [2018-11-28 18:05:14,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 18:05:14,047 INFO L225 Difference]: With dead ends: 79 [2018-11-28 18:05:14,047 INFO L226 Difference]: Without dead ends: 40 [2018-11-28 18:05:14,051 INFO L631 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 [2018-11-28 18:05:14,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2018-11-28 18:05:14,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2018-11-28 18:05:14,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2018-11-28 18:05:14,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 48 transitions. [2018-11-28 18:05:14,095 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 48 transitions. Word has length 22 [2018-11-28 18:05:14,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 18:05:14,096 INFO L480 AbstractCegarLoop]: Abstraction has 40 states and 48 transitions. [2018-11-28 18:05:14,096 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-28 18:05:14,096 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 48 transitions. [2018-11-28 18:05:14,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-11-28 18:05:14,102 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 18:05:14,102 INFO L402 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, 1] [2018-11-28 18:05:14,102 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 18:05:14,102 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 18:05:14,103 INFO L82 PathProgramCache]: Analyzing trace with hash -428418178, now seen corresponding path program 1 times [2018-11-28 18:05:14,103 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 18:05:14,103 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 18:05:14,106 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 18:05:14,106 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 18:05:14,106 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 18:05:14,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 18:05:14,256 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 18:05:14,257 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 18:05:14,257 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-28 18:05:14,259 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-28 18:05:14,260 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-28 18:05:14,260 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-28 18:05:14,260 INFO L87 Difference]: Start difference. First operand 40 states and 48 transitions. Second operand 4 states. [2018-11-28 18:05:14,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 18:05:14,349 INFO L93 Difference]: Finished difference Result 59 states and 69 transitions. [2018-11-28 18:05:14,350 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-28 18:05:14,350 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 23 [2018-11-28 18:05:14,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 18:05:14,353 INFO L225 Difference]: With dead ends: 59 [2018-11-28 18:05:14,354 INFO L226 Difference]: Without dead ends: 44 [2018-11-28 18:05:14,355 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-28 18:05:14,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2018-11-28 18:05:14,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2018-11-28 18:05:14,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2018-11-28 18:05:14,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 53 transitions. [2018-11-28 18:05:14,366 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 53 transitions. Word has length 23 [2018-11-28 18:05:14,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 18:05:14,367 INFO L480 AbstractCegarLoop]: Abstraction has 44 states and 53 transitions. [2018-11-28 18:05:14,367 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-28 18:05:14,367 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 53 transitions. [2018-11-28 18:05:14,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-11-28 18:05:14,368 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 18:05:14,368 INFO L402 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, 1, 1, 1, 1] [2018-11-28 18:05:14,369 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 18:05:14,369 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 18:05:14,369 INFO L82 PathProgramCache]: Analyzing trace with hash 328113906, now seen corresponding path program 1 times [2018-11-28 18:05:14,369 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 18:05:14,369 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 18:05:14,370 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 18:05:14,371 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 18:05:14,371 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 18:05:14,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 18:05:14,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 18:05:14,446 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 18:05:14,446 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-28 18:05:14,447 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-28 18:05:14,447 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-28 18:05:14,447 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-28 18:05:14,448 INFO L87 Difference]: Start difference. First operand 44 states and 53 transitions. Second operand 4 states. [2018-11-28 18:05:14,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 18:05:14,560 INFO L93 Difference]: Finished difference Result 63 states and 74 transitions. [2018-11-28 18:05:14,562 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-28 18:05:14,563 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 26 [2018-11-28 18:05:14,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 18:05:14,564 INFO L225 Difference]: With dead ends: 63 [2018-11-28 18:05:14,567 INFO L226 Difference]: Without dead ends: 48 [2018-11-28 18:05:14,567 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-28 18:05:14,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2018-11-28 18:05:14,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 44. [2018-11-28 18:05:14,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2018-11-28 18:05:14,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 53 transitions. [2018-11-28 18:05:14,577 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 53 transitions. Word has length 26 [2018-11-28 18:05:14,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 18:05:14,577 INFO L480 AbstractCegarLoop]: Abstraction has 44 states and 53 transitions. [2018-11-28 18:05:14,577 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-28 18:05:14,577 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 53 transitions. [2018-11-28 18:05:14,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-11-28 18:05:14,580 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 18:05:14,581 INFO L402 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, 1, 1, 1, 1] [2018-11-28 18:05:14,581 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 18:05:14,581 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 18:05:14,581 INFO L82 PathProgramCache]: Analyzing trace with hash -1468837453, now seen corresponding path program 1 times [2018-11-28 18:05:14,581 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 18:05:14,582 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 18:05:14,586 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 18:05:14,587 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 18:05:14,587 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 18:05:14,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 18:05:14,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 18:05:14,681 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2018-11-28 18:05:14,722 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 06:05:14 BoogieIcfgContainer [2018-11-28 18:05:14,722 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-28 18:05:14,722 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-28 18:05:14,722 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-28 18:05:14,723 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-28 18:05:14,723 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 06:05:13" (3/4) ... [2018-11-28 18:05:14,729 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-11-28 18:05:14,730 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-28 18:05:14,731 INFO L168 Benchmark]: Toolchain (without parser) took 2130.91 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 138.4 MB). Free memory was 946.0 MB in the beginning and 1.1 GB in the end (delta: -121.7 MB). Peak memory consumption was 16.8 MB. Max. memory is 11.5 GB. [2018-11-28 18:05:14,733 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 1.0 GB. Free memory is still 972.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 18:05:14,734 INFO L168 Benchmark]: CACSL2BoogieTranslator took 359.19 ms. Allocated memory is still 1.0 GB. Free memory was 946.0 MB in the beginning and 935.2 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-28 18:05:14,735 INFO L168 Benchmark]: Boogie Procedure Inliner took 32.28 ms. Allocated memory is still 1.0 GB. Free memory was 935.2 MB in the beginning and 929.9 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-11-28 18:05:14,737 INFO L168 Benchmark]: Boogie Preprocessor took 36.41 ms. Allocated memory is still 1.0 GB. Free memory is still 929.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 18:05:14,737 INFO L168 Benchmark]: RCFGBuilder took 669.55 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 138.4 MB). Free memory was 929.9 MB in the beginning and 1.1 GB in the end (delta: -177.7 MB). Peak memory consumption was 13.5 MB. Max. memory is 11.5 GB. [2018-11-28 18:05:14,739 INFO L168 Benchmark]: TraceAbstraction took 1020.87 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 40.0 MB). Peak memory consumption was 40.0 MB. Max. memory is 11.5 GB. [2018-11-28 18:05:14,740 INFO L168 Benchmark]: Witness Printer took 7.33 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 18:05:14,746 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 1.0 GB. Free memory is still 972.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 359.19 ms. Allocated memory is still 1.0 GB. Free memory was 946.0 MB in the beginning and 935.2 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 32.28 ms. Allocated memory is still 1.0 GB. Free memory was 935.2 MB in the beginning and 929.9 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 36.41 ms. Allocated memory is still 1.0 GB. Free memory is still 929.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 669.55 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 138.4 MB). Free memory was 929.9 MB in the beginning and 1.1 GB in the end (delta: -177.7 MB). Peak memory consumption was 13.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1020.87 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 40.0 MB). Peak memory consumption was 40.0 MB. Max. memory is 11.5 GB. * Witness Printer took 7.33 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 79]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 78, overapproximation of someUnaryFLOAToperation at line 74. Possible FailurePath: [L73] float x = 0.0f; [L74] float y = -0.0f; VAL [x=0] [L75] CALL, EXPR fmax_float(x, y) VAL [\old(x)=0, \old(y)=4286578690] [L44] CALL, EXPR __fpclassify_float(x) VAL [\old(x)=0] [L21] __uint32_t w; VAL [\old(x)=0, x=0] [L24] ieee_float_shape_type gf_u; [L25] gf_u.value = (x) [L26] EXPR gf_u.word [L26] (w) = gf_u.word [L29] COND FALSE !(w == 0x00000000 || w == 0x80000000) VAL [\old(x)=0, w=4286578689, x=0] [L31-L32] COND FALSE !((w >= 0x00800000 && w <= 0x7f7fffff) || (w >= 0x80800000 && w <= 0xff7fffff)) VAL [\old(x)=0, w=4286578689, x=0] [L34-L35] COND FALSE !((w >= 0x00000001 && w <= 0x007fffff) || (w >= 0x80000001 && w <= 0x807fffff)) VAL [\old(x)=0, w=4286578689, x=0] [L37] COND FALSE !(w == 0x7f800000 || w == 0xff800000) [L40] return 0; VAL [\old(x)=0, \result=0, w=4286578689, x=0] [L44] RET, EXPR __fpclassify_float(x) VAL [\old(x)=0, \old(y)=4286578690, __fpclassify_float(x)=0, x=0, y=4286578690] [L44] COND TRUE __fpclassify_float(x) == 0 [L45] return y; VAL [\old(x)=0, \old(y)=4286578690, \result=4286578690, x=0, y=4286578690] [L75] RET, EXPR fmax_float(x, y) VAL [fmax_float(x, y)=4286578690, x=0, y=4286578690] [L75] float res = fmax_float(x, y); [L78] EXPR res == 0.0f && __signbit_float(res) == 0 VAL [res=4286578690, res == 0.0f && __signbit_float(res) == 0=0, x=0, y=4286578690] [L78] COND TRUE !(res == 0.0f && __signbit_float(res) == 0) [L79] __VERIFIER_error() VAL [res=4286578690, x=0, y=4286578690] - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 44 locations, 1 error locations. UNSAFE Result, 0.9s OverallTime, 4 OverallIterations, 1 TraceHistogramMax, 0.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 144 SDtfs, 0 SDslu, 172 SDs, 0 SdLazy, 17 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=44occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 4 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 97 NumberOfCodeBlocks, 97 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 68 ConstructedInterpolants, 0 QuantifiedInterpolants, 1926 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: 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 0.1.24-91b1670 [2018-11-28 18:05:17,204 INFO L170 SettingsManager]: Resetting all preferences to default values... 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[2018-11-28 18:05:17,222 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-28 18:05:17,223 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-28 18:05:17,224 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-28 18:05:17,229 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-28 18:05:17,231 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-28 18:05:17,238 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-28 18:05:17,239 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-28 18:05:17,240 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-28 18:05:17,243 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-28 18:05:17,244 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-28 18:05:17,245 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-28 18:05:17,246 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-28 18:05:17,247 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-28 18:05:17,249 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-28 18:05:17,250 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-28 18:05:17,252 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-28 18:05:17,253 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-28 18:05:17,254 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-28 18:05:17,257 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-28 18:05:17,257 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-28 18:05:17,258 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-28 18:05:17,259 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-28 18:05:17,260 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-28 18:05:17,261 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-28 18:05:17,262 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-28 18:05:17,263 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-28 18:05:17,263 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-28 18:05:17,264 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-28 18:05:17,264 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-28 18:05:17,265 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-28 18:05:17,266 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-28 18:05:17,266 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-28 18:05:17,267 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2018-11-28 18:05:17,282 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-28 18:05:17,283 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-28 18:05:17,283 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-28 18:05:17,284 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-11-28 18:05:17,284 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-28 18:05:17,284 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-28 18:05:17,285 INFO L133 SettingsManager]: * Use SBE=true [2018-11-28 18:05:17,286 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-28 18:05:17,286 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-28 18:05:17,286 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-28 18:05:17,286 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-28 18:05:17,286 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-28 18:05:17,287 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-28 18:05:17,287 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-28 18:05:17,288 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-11-28 18:05:17,288 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-11-28 18:05:17,288 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-28 18:05:17,288 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-28 18:05:17,288 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-28 18:05:17,289 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-28 18:05:17,289 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-28 18:05:17,289 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-28 18:05:17,289 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-28 18:05:17,289 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-28 18:05:17,290 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-28 18:05:17,291 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-28 18:05:17,291 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-28 18:05:17,291 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-28 18:05:17,292 INFO L133 SettingsManager]: * Trace refinement strategy=WOLF [2018-11-28 18:05:17,292 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-28 18:05:17,292 INFO L133 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2018-11-28 18:05:17,292 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-11-28 18:05:17,292 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c8e4dbe5a9ab518912f1108432d43f490ec977d7 [2018-11-28 18:05:17,346 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-28 18:05:17,366 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-28 18:05:17,373 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-28 18:05:17,375 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-28 18:05:17,378 INFO L276 PluginConnector]: CDTParser initialized [2018-11-28 18:05:17,379 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/float-newlib/float_req_bl_1252b_false-unreach-call.c [2018-11-28 18:05:17,444 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/76f061d8c/ff565a0bb32d44d9a2db92046bfc654f/FLAG03a290a6e [2018-11-28 18:05:17,935 INFO L307 CDTParser]: Found 1 translation units. [2018-11-28 18:05:17,936 INFO L161 CDTParser]: Scanning /storage/repos/svcomp/c/float-newlib/float_req_bl_1252b_false-unreach-call.c [2018-11-28 18:05:17,944 INFO L355 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/76f061d8c/ff565a0bb32d44d9a2db92046bfc654f/FLAG03a290a6e [2018-11-28 18:05:18,263 INFO L363 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/76f061d8c/ff565a0bb32d44d9a2db92046bfc654f [2018-11-28 18:05:18,268 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-28 18:05:18,270 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-28 18:05:18,272 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-28 18:05:18,273 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-28 18:05:18,277 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-28 18:05:18,279 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 06:05:18" (1/1) ... [2018-11-28 18:05:18,282 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41a15a8c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:05:18, skipping insertion in model container [2018-11-28 18:05:18,283 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 06:05:18" (1/1) ... [2018-11-28 18:05:18,292 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-28 18:05:18,317 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-28 18:05:18,591 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 18:05:18,602 INFO L191 MainTranslator]: Completed pre-run [2018-11-28 18:05:18,648 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 18:05:18,694 INFO L195 MainTranslator]: Completed translation [2018-11-28 18:05:18,695 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:05:18 WrapperNode [2018-11-28 18:05:18,695 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-28 18:05:18,697 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-28 18:05:18,697 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-28 18:05:18,697 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-28 18:05:18,708 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:05:18" (1/1) ... [2018-11-28 18:05:18,725 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:05:18" (1/1) ... [2018-11-28 18:05:18,735 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-28 18:05:18,736 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-28 18:05:18,736 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-28 18:05:18,736 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-28 18:05:18,747 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:05:18" (1/1) ... [2018-11-28 18:05:18,748 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:05:18" (1/1) ... [2018-11-28 18:05:18,752 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:05:18" (1/1) ... [2018-11-28 18:05:18,752 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:05:18" (1/1) ... [2018-11-28 18:05:18,769 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:05:18" (1/1) ... [2018-11-28 18:05:18,775 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:05:18" (1/1) ... [2018-11-28 18:05:18,778 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:05:18" (1/1) ... [2018-11-28 18:05:18,782 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-28 18:05:18,782 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-28 18:05:18,782 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-28 18:05:18,783 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-28 18:05:18,784 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:05:18" (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 [2018-11-28 18:05:18,909 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-28 18:05:18,909 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-28 18:05:18,910 INFO L130 BoogieDeclarations]: Found specification of procedure fmax_float [2018-11-28 18:05:18,910 INFO L138 BoogieDeclarations]: Found implementation of procedure fmax_float [2018-11-28 18:05:18,910 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_float [2018-11-28 18:05:18,910 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_float [2018-11-28 18:05:18,910 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-28 18:05:18,910 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-28 18:05:18,910 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-28 18:05:18,911 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2018-11-28 18:05:18,911 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-28 18:05:18,911 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-28 18:05:18,911 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2018-11-28 18:05:18,911 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_float [2018-11-28 18:05:18,911 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_float [2018-11-28 18:05:18,911 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-28 18:05:19,396 WARN L317 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-28 18:05:19,479 WARN L317 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-28 18:05:19,484 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-28 18:05:19,484 INFO L280 CfgBuilder]: Removed 4 assue(true) statements. [2018-11-28 18:05:19,485 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 06:05:19 BoogieIcfgContainer [2018-11-28 18:05:19,485 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-28 18:05:19,487 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-28 18:05:19,487 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-28 18:05:19,491 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-28 18:05:19,492 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 06:05:18" (1/3) ... [2018-11-28 18:05:19,492 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c032b71 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 06:05:19, skipping insertion in model container [2018-11-28 18:05:19,493 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:05:18" (2/3) ... [2018-11-28 18:05:19,493 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c032b71 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 06:05:19, skipping insertion in model container [2018-11-28 18:05:19,493 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 06:05:19" (3/3) ... [2018-11-28 18:05:19,496 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_1252b_false-unreach-call.c [2018-11-28 18:05:19,508 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-28 18:05:19,518 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-28 18:05:19,539 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-28 18:05:19,588 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-28 18:05:19,589 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-28 18:05:19,589 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-28 18:05:19,590 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-28 18:05:19,590 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-28 18:05:19,590 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-28 18:05:19,590 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-28 18:05:19,590 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-28 18:05:19,590 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-28 18:05:19,609 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states. [2018-11-28 18:05:19,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-11-28 18:05:19,616 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 18:05:19,617 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 18:05:19,619 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 18:05:19,625 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 18:05:19,625 INFO L82 PathProgramCache]: Analyzing trace with hash -849686715, now seen corresponding path program 1 times [2018-11-28 18:05:19,631 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-28 18:05:19,631 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy 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 [2018-11-28 18:05:19,640 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 18:05:19,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 18:05:19,703 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 18:05:19,727 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 18:05:19,728 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-28 18:05:19,744 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 18:05:19,744 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-28 18:05:19,749 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-28 18:05:19,765 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-28 18:05:19,766 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-28 18:05:19,769 INFO L87 Difference]: Start difference. First operand 42 states. Second operand 2 states. [2018-11-28 18:05:19,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 18:05:19,798 INFO L93 Difference]: Finished difference Result 75 states and 103 transitions. [2018-11-28 18:05:19,798 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-28 18:05:19,800 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 21 [2018-11-28 18:05:19,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 18:05:19,812 INFO L225 Difference]: With dead ends: 75 [2018-11-28 18:05:19,812 INFO L226 Difference]: Without dead ends: 38 [2018-11-28 18:05:19,817 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-28 18:05:19,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2018-11-28 18:05:19,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2018-11-28 18:05:19,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2018-11-28 18:05:19,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 46 transitions. [2018-11-28 18:05:19,866 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 46 transitions. Word has length 21 [2018-11-28 18:05:19,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 18:05:19,867 INFO L480 AbstractCegarLoop]: Abstraction has 38 states and 46 transitions. [2018-11-28 18:05:19,867 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-28 18:05:19,868 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 46 transitions. [2018-11-28 18:05:19,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-11-28 18:05:19,871 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 18:05:19,871 INFO L402 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] [2018-11-28 18:05:19,871 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 18:05:19,871 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 18:05:19,872 INFO L82 PathProgramCache]: Analyzing trace with hash -2014516036, now seen corresponding path program 1 times [2018-11-28 18:05:19,873 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-28 18:05:19,873 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy 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 [2018-11-28 18:05:19,884 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 18:05:19,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 18:05:19,935 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 18:05:20,046 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 18:05:20,046 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-28 18:05:20,066 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 18:05:20,066 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-28 18:05:20,069 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-28 18:05:20,069 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-28 18:05:20,069 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-28 18:05:20,070 INFO L87 Difference]: Start difference. First operand 38 states and 46 transitions. Second operand 4 states. [2018-11-28 18:05:20,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 18:05:20,158 INFO L93 Difference]: Finished difference Result 56 states and 66 transitions. [2018-11-28 18:05:20,159 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-28 18:05:20,159 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 22 [2018-11-28 18:05:20,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 18:05:20,163 INFO L225 Difference]: With dead ends: 56 [2018-11-28 18:05:20,164 INFO L226 Difference]: Without dead ends: 41 [2018-11-28 18:05:20,165 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-28 18:05:20,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2018-11-28 18:05:20,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2018-11-28 18:05:20,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-11-28 18:05:20,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 50 transitions. [2018-11-28 18:05:20,176 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 50 transitions. Word has length 22 [2018-11-28 18:05:20,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 18:05:20,176 INFO L480 AbstractCegarLoop]: Abstraction has 41 states and 50 transitions. [2018-11-28 18:05:20,176 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-28 18:05:20,176 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 50 transitions. [2018-11-28 18:05:20,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-11-28 18:05:20,179 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 18:05:20,179 INFO L402 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, 1] [2018-11-28 18:05:20,180 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 18:05:20,180 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 18:05:20,180 INFO L82 PathProgramCache]: Analyzing trace with hash -842703294, now seen corresponding path program 1 times [2018-11-28 18:05:20,181 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-28 18:05:20,181 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy 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 [2018-11-28 18:05:20,191 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 18:05:20,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 18:05:20,241 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 18:05:20,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 18:05:20,583 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-28 18:05:20,599 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 18:05:20,600 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-11-28 18:05:20,600 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-28 18:05:20,601 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-28 18:05:20,604 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-11-28 18:05:20,605 INFO L87 Difference]: Start difference. First operand 41 states and 50 transitions. Second operand 8 states. [2018-11-28 18:05:21,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 18:05:21,700 INFO L93 Difference]: Finished difference Result 60 states and 73 transitions. [2018-11-28 18:05:21,701 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-28 18:05:21,701 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 23 [2018-11-28 18:05:21,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 18:05:21,704 INFO L225 Difference]: With dead ends: 60 [2018-11-28 18:05:21,704 INFO L226 Difference]: Without dead ends: 40 [2018-11-28 18:05:21,705 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2018-11-28 18:05:21,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2018-11-28 18:05:21,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2018-11-28 18:05:21,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2018-11-28 18:05:21,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 47 transitions. [2018-11-28 18:05:21,714 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 47 transitions. Word has length 23 [2018-11-28 18:05:21,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 18:05:21,714 INFO L480 AbstractCegarLoop]: Abstraction has 40 states and 47 transitions. [2018-11-28 18:05:21,714 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-28 18:05:21,714 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 47 transitions. [2018-11-28 18:05:21,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-11-28 18:05:21,717 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 18:05:21,717 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 18:05:21,717 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 18:05:21,718 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 18:05:21,718 INFO L82 PathProgramCache]: Analyzing trace with hash 513797078, now seen corresponding path program 1 times [2018-11-28 18:05:21,719 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-28 18:05:21,719 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy 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 [2018-11-28 18:05:21,733 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 18:05:21,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 18:05:21,799 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 18:05:21,834 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-11-28 18:05:21,834 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-28 18:05:21,846 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 18:05:21,846 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-28 18:05:21,846 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-28 18:05:21,847 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-28 18:05:21,847 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-28 18:05:21,847 INFO L87 Difference]: Start difference. First operand 40 states and 47 transitions. Second operand 4 states. [2018-11-28 18:05:21,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 18:05:21,912 INFO L93 Difference]: Finished difference Result 56 states and 64 transitions. [2018-11-28 18:05:21,912 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-28 18:05:21,913 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 30 [2018-11-28 18:05:21,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 18:05:21,914 INFO L225 Difference]: With dead ends: 56 [2018-11-28 18:05:21,914 INFO L226 Difference]: Without dead ends: 41 [2018-11-28 18:05:21,914 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-28 18:05:21,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2018-11-28 18:05:21,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2018-11-28 18:05:21,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-11-28 18:05:21,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 48 transitions. [2018-11-28 18:05:21,923 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 48 transitions. Word has length 30 [2018-11-28 18:05:21,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 18:05:21,924 INFO L480 AbstractCegarLoop]: Abstraction has 41 states and 48 transitions. [2018-11-28 18:05:21,925 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-28 18:05:21,925 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 48 transitions. [2018-11-28 18:05:21,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-11-28 18:05:21,926 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 18:05:21,926 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 18:05:21,926 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 18:05:21,927 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 18:05:21,927 INFO L82 PathProgramCache]: Analyzing trace with hash -1245379058, now seen corresponding path program 1 times [2018-11-28 18:05:21,927 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-28 18:05:21,927 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy 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 [2018-11-28 18:05:21,933 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 18:05:21,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 18:05:21,997 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 18:05:22,456 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-11-28 18:05:22,457 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-28 18:05:22,473 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 18:05:22,473 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-11-28 18:05:22,473 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-28 18:05:22,474 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-28 18:05:22,474 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-11-28 18:05:22,474 INFO L87 Difference]: Start difference. First operand 41 states and 48 transitions. Second operand 8 states. [2018-11-28 18:05:22,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 18:05:22,980 INFO L93 Difference]: Finished difference Result 58 states and 66 transitions. [2018-11-28 18:05:22,981 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-28 18:05:22,981 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 31 [2018-11-28 18:05:22,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 18:05:22,982 INFO L225 Difference]: With dead ends: 58 [2018-11-28 18:05:22,983 INFO L226 Difference]: Without dead ends: 35 [2018-11-28 18:05:22,983 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2018-11-28 18:05:22,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2018-11-28 18:05:22,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2018-11-28 18:05:22,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2018-11-28 18:05:22,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 37 transitions. [2018-11-28 18:05:22,991 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 37 transitions. Word has length 31 [2018-11-28 18:05:22,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 18:05:22,991 INFO L480 AbstractCegarLoop]: Abstraction has 35 states and 37 transitions. [2018-11-28 18:05:22,991 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-28 18:05:22,992 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 37 transitions. [2018-11-28 18:05:22,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-11-28 18:05:22,994 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 18:05:22,994 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 18:05:22,994 INFO L423 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 18:05:22,995 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 18:05:22,996 INFO L82 PathProgramCache]: Analyzing trace with hash 45724059, now seen corresponding path program 1 times [2018-11-28 18:05:22,996 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-28 18:05:22,996 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy 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 [2018-11-28 18:05:23,006 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 18:05:23,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 18:05:23,064 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 18:05:23,188 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-11-28 18:05:23,188 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-28 18:05:23,199 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 18:05:23,199 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-28 18:05:23,200 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-28 18:05:23,200 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-28 18:05:23,200 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-28 18:05:23,201 INFO L87 Difference]: Start difference. First operand 35 states and 37 transitions. Second operand 5 states. [2018-11-28 18:05:23,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 18:05:23,294 INFO L93 Difference]: Finished difference Result 51 states and 53 transitions. [2018-11-28 18:05:23,297 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-28 18:05:23,297 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 32 [2018-11-28 18:05:23,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 18:05:23,298 INFO L225 Difference]: With dead ends: 51 [2018-11-28 18:05:23,299 INFO L226 Difference]: Without dead ends: 35 [2018-11-28 18:05:23,299 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-11-28 18:05:23,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2018-11-28 18:05:23,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2018-11-28 18:05:23,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2018-11-28 18:05:23,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 36 transitions. [2018-11-28 18:05:23,306 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 36 transitions. Word has length 32 [2018-11-28 18:05:23,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 18:05:23,306 INFO L480 AbstractCegarLoop]: Abstraction has 35 states and 36 transitions. [2018-11-28 18:05:23,307 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-28 18:05:23,307 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 36 transitions. [2018-11-28 18:05:23,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-11-28 18:05:23,309 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 18:05:23,309 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 18:05:23,310 INFO L423 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 18:05:23,310 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 18:05:23,310 INFO L82 PathProgramCache]: Analyzing trace with hash -763622567, now seen corresponding path program 1 times [2018-11-28 18:05:23,311 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-28 18:05:23,311 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy 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 [2018-11-28 18:05:23,321 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 18:05:23,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 18:05:23,384 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 18:05:23,504 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-11-28 18:05:23,504 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-28 18:05:23,514 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 18:05:23,514 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-11-28 18:05:23,515 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-28 18:05:23,515 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-28 18:05:23,515 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-11-28 18:05:23,515 INFO L87 Difference]: Start difference. First operand 35 states and 36 transitions. Second operand 8 states. [2018-11-28 18:05:23,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 18:05:23,841 INFO L93 Difference]: Finished difference Result 38 states and 38 transitions. [2018-11-28 18:05:23,842 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-28 18:05:23,842 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 32 [2018-11-28 18:05:23,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 18:05:23,843 INFO L225 Difference]: With dead ends: 38 [2018-11-28 18:05:23,843 INFO L226 Difference]: Without dead ends: 35 [2018-11-28 18:05:23,845 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2018-11-28 18:05:23,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2018-11-28 18:05:23,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2018-11-28 18:05:23,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2018-11-28 18:05:23,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 35 transitions. [2018-11-28 18:05:23,851 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 35 transitions. Word has length 32 [2018-11-28 18:05:23,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 18:05:23,851 INFO L480 AbstractCegarLoop]: Abstraction has 35 states and 35 transitions. [2018-11-28 18:05:23,851 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-28 18:05:23,851 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 35 transitions. [2018-11-28 18:05:23,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2018-11-28 18:05:23,854 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 18:05:23,854 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 18:05:23,855 INFO L423 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 18:05:23,855 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 18:05:23,855 INFO L82 PathProgramCache]: Analyzing trace with hash -135886477, now seen corresponding path program 1 times [2018-11-28 18:05:23,855 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-28 18:05:23,856 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy 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 [2018-11-28 18:05:23,861 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 18:05:23,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 18:05:24,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 18:05:24,085 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2018-11-28 18:05:24,143 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 06:05:24 BoogieIcfgContainer [2018-11-28 18:05:24,143 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-28 18:05:24,144 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-28 18:05:24,144 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-28 18:05:24,144 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-28 18:05:24,145 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 06:05:19" (3/4) ... [2018-11-28 18:05:24,152 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2018-11-28 18:05:24,276 INFO L145 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2018-11-28 18:05:24,276 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-28 18:05:24,277 INFO L168 Benchmark]: Toolchain (without parser) took 6008.12 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 127.9 MB). Free memory was 947.3 MB in the beginning and 889.9 MB in the end (delta: 57.4 MB). Peak memory consumption was 185.4 MB. Max. memory is 11.5 GB. [2018-11-28 18:05:24,281 INFO L168 Benchmark]: CDTParser took 0.43 ms. Allocated memory is still 1.0 GB. Free memory is still 972.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 18:05:24,282 INFO L168 Benchmark]: CACSL2BoogieTranslator took 424.00 ms. Allocated memory is still 1.0 GB. Free memory was 947.3 MB in the beginning and 935.3 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.1 MB. Max. memory is 11.5 GB. [2018-11-28 18:05:24,283 INFO L168 Benchmark]: Boogie Procedure Inliner took 38.56 ms. Allocated memory is still 1.0 GB. Free memory was 935.3 MB in the beginning and 929.9 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-11-28 18:05:24,284 INFO L168 Benchmark]: Boogie Preprocessor took 46.12 ms. Allocated memory is still 1.0 GB. Free memory is still 929.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 18:05:24,285 INFO L168 Benchmark]: RCFGBuilder took 702.91 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 127.9 MB). Free memory was 929.9 MB in the beginning and 1.1 GB in the end (delta: -166.5 MB). Peak memory consumption was 13.7 MB. Max. memory is 11.5 GB. [2018-11-28 18:05:24,286 INFO L168 Benchmark]: TraceAbstraction took 4656.59 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 896.7 MB in the end (delta: 199.7 MB). Peak memory consumption was 199.7 MB. Max. memory is 11.5 GB. [2018-11-28 18:05:24,287 INFO L168 Benchmark]: Witness Printer took 132.35 ms. Allocated memory is still 1.2 GB. Free memory was 896.7 MB in the beginning and 889.9 MB in the end (delta: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. [2018-11-28 18:05:24,297 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.43 ms. Allocated memory is still 1.0 GB. Free memory is still 972.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 424.00 ms. Allocated memory is still 1.0 GB. Free memory was 947.3 MB in the beginning and 935.3 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 38.56 ms. Allocated memory is still 1.0 GB. Free memory was 935.3 MB in the beginning and 929.9 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 46.12 ms. Allocated memory is still 1.0 GB. Free memory is still 929.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 702.91 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 127.9 MB). Free memory was 929.9 MB in the beginning and 1.1 GB in the end (delta: -166.5 MB). Peak memory consumption was 13.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 4656.59 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 896.7 MB in the end (delta: 199.7 MB). Peak memory consumption was 199.7 MB. Max. memory is 11.5 GB. * Witness Printer took 132.35 ms. Allocated memory is still 1.2 GB. Free memory was 896.7 MB in the beginning and 889.9 MB in the end (delta: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 79]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L73] float x = 0.0f; [L74] float y = -0.0f; VAL [x=0.0, y=0.0] [L75] CALL, EXPR fmax_float(x, y) VAL [\old(x)=0.0, \old(y)=0.0] [L44] CALL, EXPR __fpclassify_float(x) VAL [\old(x)=0.0] [L21] __uint32_t w; VAL [\old(x)=0.0, x=0.0] [L24] ieee_float_shape_type gf_u; [L25] gf_u.value = (x) [L26] EXPR gf_u.word [L26] (w) = gf_u.word [L29] COND TRUE w == 0x00000000 || w == 0x80000000 [L30] return 2; VAL [\old(x)=0.0, \result=2, w=0, x=0.0] [L44] RET, EXPR __fpclassify_float(x) VAL [\old(x)=0.0, \old(y)=0.0, __fpclassify_float(x)=2, x=0.0, y=0.0] [L44] COND FALSE !(__fpclassify_float(x) == 0) [L48] CALL, EXPR __fpclassify_float(y) VAL [\old(x)=0.0] [L21] __uint32_t w; VAL [\old(x)=0.0, x=0.0] [L24] ieee_float_shape_type gf_u; [L25] gf_u.value = (x) [L26] EXPR gf_u.word [L26] (w) = gf_u.word [L29] COND TRUE w == 0x00000000 || w == 0x80000000 [L30] return 2; VAL [\old(x)=0.0, \result=2, w=2147483648, x=0.0] [L48] RET, EXPR __fpclassify_float(y) VAL [\old(x)=0.0, \old(y)=0.0, __fpclassify_float(y)=2, x=0.0, y=0.0] [L48] COND FALSE !(__fpclassify_float(y) == 0) [L51] EXPR x > y ? x : y VAL [\old(x)=0.0, \old(y)=0.0, x=0.0, x > y ? x : y=0.0, y=0.0] [L51] return x > y ? x : y; [L75] RET, EXPR fmax_float(x, y) VAL [fmax_float(x, y)=0.0, x=0.0, y=0.0] [L75] float res = fmax_float(x, y); [L78] EXPR res == 0.0f && __signbit_float(res) == 0 VAL [res=0.0, res == 0.0f && __signbit_float(res) == 0=1, x=0.0, y=0.0] [L78] CALL, EXPR __signbit_float(res) VAL [\old(x)=0.0] [L55] __uint32_t w; VAL [\old(x)=0.0, x=0.0] [L58] ieee_float_shape_type gf_u; [L59] gf_u.value = (x) [L60] EXPR gf_u.word [L60] (w) = gf_u.word [L63] return (w & 0x80000000) != 0; VAL [\old(x)=0.0, \result=1, w=2147483648, x=0.0] [L78] RET, EXPR __signbit_float(res) VAL [__signbit_float(res)=1, res=0.0, res == 0.0f && __signbit_float(res) == 0=1, x=0.0, y=0.0] [L78] EXPR res == 0.0f && __signbit_float(res) == 0 VAL [__signbit_float(res)=1, res=0.0, res == 0.0f && __signbit_float(res) == 0=0, x=0.0, y=0.0] [L78] COND TRUE !(res == 0.0f && __signbit_float(res) == 0) [L79] __VERIFIER_error() VAL [res=0.0, x=0.0, y=0.0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 42 locations, 1 error locations. UNSAFE Result, 4.5s OverallTime, 8 OverallIterations, 2 TraceHistogramMax, 2.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 272 SDtfs, 111 SDslu, 739 SDs, 0 SdLazy, 268 SolverSat, 7 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 196 GetRequests, 159 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 1.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=42occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 7 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 231 NumberOfCodeBlocks, 231 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 184 ConstructedInterpolants, 12 QuantifiedInterpolants, 13625 SizeOfPredicates, 15 NumberOfNonLiveVariables, 539 ConjunctsInSsa, 41 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 24/24 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...