./Ultimate.py --spec /storage/repos/svcomp/c/properties/unreach-call.prp --file /storage/repos/svcomp/c/float-newlib/float_req_bl_1232b_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_1232b_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 36a0a55241cede481b157c1ab9f348d708a5b166 ................................................................................................................................................................................................................................................................................................................................................................................. 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_1232b_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 36a0a55241cede481b157c1ab9f348d708a5b166 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 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 18:05:06,525 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-28 18:05:06,528 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-28 18:05:06,540 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-28 18:05:06,541 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-28 18:05:06,542 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-28 18:05:06,543 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-28 18:05:06,546 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-28 18:05:06,548 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-28 18:05:06,550 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-28 18:05:06,551 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-28 18:05:06,551 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-28 18:05:06,552 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-28 18:05:06,553 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-28 18:05:06,555 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-28 18:05:06,556 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-28 18:05:06,557 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-28 18:05:06,560 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-28 18:05:06,563 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-28 18:05:06,565 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-28 18:05:06,567 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-28 18:05:06,568 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-28 18:05:06,572 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-28 18:05:06,573 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-28 18:05:06,573 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-28 18:05:06,574 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-28 18:05:06,575 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-28 18:05:06,576 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-28 18:05:06,577 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-28 18:05:06,579 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-28 18:05:06,579 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-28 18:05:06,580 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-28 18:05:06,580 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-28 18:05:06,580 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-28 18:05:06,581 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-28 18:05:06,582 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-28 18:05:06,583 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-11-28 18:05:06,600 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-28 18:05:06,600 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-28 18:05:06,601 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-28 18:05:06,601 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-11-28 18:05:06,602 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-28 18:05:06,602 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-28 18:05:06,602 INFO L133 SettingsManager]: * Use SBE=true [2018-11-28 18:05:06,603 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-28 18:05:06,603 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-28 18:05:06,603 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-28 18:05:06,604 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-28 18:05:06,604 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-28 18:05:06,604 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-28 18:05:06,604 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-28 18:05:06,605 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-28 18:05:06,605 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-28 18:05:06,605 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-28 18:05:06,605 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-28 18:05:06,606 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-28 18:05:06,606 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-28 18:05:06,606 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-28 18:05:06,607 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-28 18:05:06,607 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-28 18:05:06,607 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-28 18:05:06,607 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-28 18:05:06,608 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-28 18:05:06,608 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-28 18:05:06,608 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-28 18:05:06,608 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-28 18:05:06,609 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-28 18:05:06,609 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 -> 36a0a55241cede481b157c1ab9f348d708a5b166 [2018-11-28 18:05:06,668 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-28 18:05:06,685 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-28 18:05:06,692 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-28 18:05:06,694 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-28 18:05:06,695 INFO L276 PluginConnector]: CDTParser initialized [2018-11-28 18:05:06,695 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/float-newlib/float_req_bl_1232b_false-unreach-call.c [2018-11-28 18:05:06,768 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cc86f1d72/9b2d232b521f4a04afc6dfca58e68af0/FLAG1a2202ff2 [2018-11-28 18:05:07,197 INFO L307 CDTParser]: Found 1 translation units. [2018-11-28 18:05:07,197 INFO L161 CDTParser]: Scanning /storage/repos/svcomp/c/float-newlib/float_req_bl_1232b_false-unreach-call.c [2018-11-28 18:05:07,205 INFO L355 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cc86f1d72/9b2d232b521f4a04afc6dfca58e68af0/FLAG1a2202ff2 [2018-11-28 18:05:07,596 INFO L363 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cc86f1d72/9b2d232b521f4a04afc6dfca58e68af0 [2018-11-28 18:05:07,600 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-28 18:05:07,601 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-28 18:05:07,603 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-28 18:05:07,603 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-28 18:05:07,607 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-28 18:05:07,609 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 06:05:07" (1/1) ... [2018-11-28 18:05:07,616 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5aaaf7b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:05:07, skipping insertion in model container [2018-11-28 18:05:07,617 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 06:05:07" (1/1) ... [2018-11-28 18:05:07,626 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-28 18:05:07,655 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-28 18:05:07,937 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 18:05:07,941 INFO L191 MainTranslator]: Completed pre-run [2018-11-28 18:05:07,977 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 18:05:08,016 INFO L195 MainTranslator]: Completed translation [2018-11-28 18:05:08,017 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:05:08 WrapperNode [2018-11-28 18:05:08,017 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-28 18:05:08,018 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-28 18:05:08,018 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-28 18:05:08,018 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-28 18:05:08,028 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:05:08" (1/1) ... [2018-11-28 18:05:08,045 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:05:08" (1/1) ... [2018-11-28 18:05:08,055 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-28 18:05:08,055 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-28 18:05:08,055 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-28 18:05:08,055 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-28 18:05:08,066 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:05:08" (1/1) ... [2018-11-28 18:05:08,066 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:05:08" (1/1) ... [2018-11-28 18:05:08,068 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:05:08" (1/1) ... [2018-11-28 18:05:08,069 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:05:08" (1/1) ... [2018-11-28 18:05:08,081 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:05:08" (1/1) ... [2018-11-28 18:05:08,087 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:05:08" (1/1) ... [2018-11-28 18:05:08,089 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:05:08" (1/1) ... [2018-11-28 18:05:08,092 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-28 18:05:08,093 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-28 18:05:08,093 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-28 18:05:08,093 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-28 18:05:08,094 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:05:08" (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 18:05:08,216 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-28 18:05:08,216 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-28 18:05:08,217 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_float [2018-11-28 18:05:08,217 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_float [2018-11-28 18:05:08,217 INFO L130 BoogieDeclarations]: Found specification of procedure fmin_float [2018-11-28 18:05:08,217 INFO L138 BoogieDeclarations]: Found implementation of procedure fmin_float [2018-11-28 18:05:08,218 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-28 18:05:08,218 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-28 18:05:08,219 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2018-11-28 18:05:08,219 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-28 18:05:08,219 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-28 18:05:08,219 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-28 18:05:08,219 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-11-28 18:05:08,219 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_float [2018-11-28 18:05:08,220 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_float [2018-11-28 18:05:08,221 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-28 18:05:08,741 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-28 18:05:08,742 INFO L280 CfgBuilder]: Removed 4 assue(true) statements. [2018-11-28 18:05:08,742 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 06:05:08 BoogieIcfgContainer [2018-11-28 18:05:08,743 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-28 18:05:08,744 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-28 18:05:08,744 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-28 18:05:08,748 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-28 18:05:08,749 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 06:05:07" (1/3) ... [2018-11-28 18:05:08,750 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@870bc17 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 06:05:08, skipping insertion in model container [2018-11-28 18:05:08,750 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:05:08" (2/3) ... [2018-11-28 18:05:08,751 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@870bc17 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 06:05:08, skipping insertion in model container [2018-11-28 18:05:08,751 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 06:05:08" (3/3) ... [2018-11-28 18:05:08,754 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_1232b_false-unreach-call.c [2018-11-28 18:05:08,765 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-28 18:05:08,775 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-28 18:05:08,794 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-28 18:05:08,828 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-28 18:05:08,829 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-28 18:05:08,829 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-28 18:05:08,829 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-28 18:05:08,829 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-28 18:05:08,829 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-28 18:05:08,830 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-28 18:05:08,830 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-28 18:05:08,830 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-28 18:05:08,850 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states. [2018-11-28 18:05:08,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-11-28 18:05:08,857 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 18:05:08,858 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 18:05:08,860 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 18:05:08,866 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 18:05:08,867 INFO L82 PathProgramCache]: Analyzing trace with hash 2127055292, now seen corresponding path program 1 times [2018-11-28 18:05:08,869 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 18:05:08,869 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 18:05:08,923 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 18:05:08,924 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 18:05:08,924 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 18:05:08,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 18:05:09,021 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 18:05:09,024 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 18:05:09,025 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-28 18:05:09,029 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-28 18:05:09,043 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-28 18:05:09,044 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-28 18:05:09,046 INFO L87 Difference]: Start difference. First operand 44 states. Second operand 2 states. [2018-11-28 18:05:09,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 18:05:09,072 INFO L93 Difference]: Finished difference Result 79 states and 107 transitions. [2018-11-28 18:05:09,072 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-28 18:05:09,073 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 22 [2018-11-28 18:05:09,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 18:05:09,083 INFO L225 Difference]: With dead ends: 79 [2018-11-28 18:05:09,083 INFO L226 Difference]: Without dead ends: 40 [2018-11-28 18:05:09,087 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 18:05:09,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2018-11-28 18:05:09,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2018-11-28 18:05:09,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2018-11-28 18:05:09,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 48 transitions. [2018-11-28 18:05:09,132 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 48 transitions. Word has length 22 [2018-11-28 18:05:09,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 18:05:09,133 INFO L480 AbstractCegarLoop]: Abstraction has 40 states and 48 transitions. [2018-11-28 18:05:09,133 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-28 18:05:09,133 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 48 transitions. [2018-11-28 18:05:09,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-11-28 18:05:09,136 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 18:05:09,136 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 18:05:09,136 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 18:05:09,137 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 18:05:09,137 INFO L82 PathProgramCache]: Analyzing trace with hash 1720731955, now seen corresponding path program 1 times [2018-11-28 18:05:09,137 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 18:05:09,137 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 18:05:09,139 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 18:05:09,139 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 18:05:09,139 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 18:05:09,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 18:05:09,280 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 18:05:09,280 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 18:05:09,280 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-28 18:05:09,287 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-28 18:05:09,288 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-28 18:05:09,288 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-28 18:05:09,289 INFO L87 Difference]: Start difference. First operand 40 states and 48 transitions. Second operand 4 states. [2018-11-28 18:05:09,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 18:05:09,344 INFO L93 Difference]: Finished difference Result 59 states and 69 transitions. [2018-11-28 18:05:09,345 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-28 18:05:09,345 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 23 [2018-11-28 18:05:09,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 18:05:09,348 INFO L225 Difference]: With dead ends: 59 [2018-11-28 18:05:09,349 INFO L226 Difference]: Without dead ends: 44 [2018-11-28 18:05:09,350 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 18:05:09,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2018-11-28 18:05:09,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2018-11-28 18:05:09,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2018-11-28 18:05:09,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 53 transitions. [2018-11-28 18:05:09,369 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 53 transitions. Word has length 23 [2018-11-28 18:05:09,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 18:05:09,369 INFO L480 AbstractCegarLoop]: Abstraction has 44 states and 53 transitions. [2018-11-28 18:05:09,370 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-28 18:05:09,370 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 53 transitions. [2018-11-28 18:05:09,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-11-28 18:05:09,371 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 18:05:09,371 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 18:05:09,373 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 18:05:09,373 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 18:05:09,373 INFO L82 PathProgramCache]: Analyzing trace with hash 185784867, now seen corresponding path program 1 times [2018-11-28 18:05:09,373 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 18:05:09,373 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 18:05:09,374 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 18:05:09,375 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 18:05:09,376 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 18:05:09,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 18:05:09,470 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 18:05:09,471 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 18:05:09,471 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-28 18:05:09,472 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-28 18:05:09,472 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-28 18:05:09,473 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-28 18:05:09,473 INFO L87 Difference]: Start difference. First operand 44 states and 53 transitions. Second operand 4 states. [2018-11-28 18:05:09,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 18:05:09,598 INFO L93 Difference]: Finished difference Result 63 states and 74 transitions. [2018-11-28 18:05:09,599 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-28 18:05:09,599 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 26 [2018-11-28 18:05:09,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 18:05:09,601 INFO L225 Difference]: With dead ends: 63 [2018-11-28 18:05:09,601 INFO L226 Difference]: Without dead ends: 48 [2018-11-28 18:05:09,602 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 18:05:09,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2018-11-28 18:05:09,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 44. [2018-11-28 18:05:09,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2018-11-28 18:05:09,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 53 transitions. [2018-11-28 18:05:09,612 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 53 transitions. Word has length 26 [2018-11-28 18:05:09,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 18:05:09,613 INFO L480 AbstractCegarLoop]: Abstraction has 44 states and 53 transitions. [2018-11-28 18:05:09,613 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-28 18:05:09,613 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 53 transitions. [2018-11-28 18:05:09,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-11-28 18:05:09,615 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 18:05:09,615 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 18:05:09,615 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 18:05:09,615 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 18:05:09,616 INFO L82 PathProgramCache]: Analyzing trace with hash -1611166492, now seen corresponding path program 1 times [2018-11-28 18:05:09,616 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 18:05:09,616 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 18:05:09,618 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 18:05:09,618 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 18:05:09,618 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 18:05:09,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 18:05:09,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 18:05:09,705 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2018-11-28 18:05:09,742 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 06:05:09 BoogieIcfgContainer [2018-11-28 18:05:09,742 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-28 18:05:09,743 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-28 18:05:09,743 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-28 18:05:09,743 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-28 18:05:09,744 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 06:05:08" (3/4) ... [2018-11-28 18:05:09,748 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-11-28 18:05:09,748 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-28 18:05:09,749 INFO L168 Benchmark]: Toolchain (without parser) took 2149.10 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 140.5 MB). Free memory was 948.7 MB in the beginning and 1.1 GB in the end (delta: -121.4 MB). Peak memory consumption was 19.2 MB. Max. memory is 11.5 GB. [2018-11-28 18:05:09,751 INFO L168 Benchmark]: CDTParser took 0.48 ms. Allocated memory is still 1.0 GB. Free memory is still 978.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 18:05:09,752 INFO L168 Benchmark]: CACSL2BoogieTranslator took 414.59 ms. Allocated memory is still 1.0 GB. Free memory was 948.7 MB in the beginning and 937.9 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-28 18:05:09,753 INFO L168 Benchmark]: Boogie Procedure Inliner took 37.12 ms. Allocated memory is still 1.0 GB. Free memory was 937.9 MB in the beginning and 932.6 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-11-28 18:05:09,754 INFO L168 Benchmark]: Boogie Preprocessor took 37.20 ms. Allocated memory is still 1.0 GB. Free memory is still 932.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 18:05:09,754 INFO L168 Benchmark]: RCFGBuilder took 649.93 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 140.5 MB). Free memory was 932.6 MB in the beginning and 1.1 GB in the end (delta: -177.2 MB). Peak memory consumption was 13.7 MB. Max. memory is 11.5 GB. [2018-11-28 18:05:09,755 INFO L168 Benchmark]: TraceAbstraction took 998.19 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: 39.8 MB). Peak memory consumption was 39.8 MB. Max. memory is 11.5 GB. [2018-11-28 18:05:09,756 INFO L168 Benchmark]: Witness Printer took 5.68 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 18:05:09,762 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.48 ms. Allocated memory is still 1.0 GB. Free memory is still 978.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 414.59 ms. Allocated memory is still 1.0 GB. Free memory was 948.7 MB in the beginning and 937.9 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 37.12 ms. Allocated memory is still 1.0 GB. Free memory was 937.9 MB in the beginning and 932.6 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 37.20 ms. Allocated memory is still 1.0 GB. Free memory is still 932.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 649.93 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 140.5 MB). Free memory was 932.6 MB in the beginning and 1.1 GB in the end (delta: -177.2 MB). Peak memory consumption was 13.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 998.19 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: 39.8 MB). Peak memory consumption was 39.8 MB. Max. memory is 11.5 GB. * Witness Printer took 5.68 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: 70]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 69, overapproximation of someUnaryFLOAToperation at line 64. Possible FailurePath: [L64] float x = -0.0f; [L65] float y = 0.0f; VAL [y=0] [L66] CALL, EXPR fmin_float(x, y) VAL [\old(x)=4286578691, \old(y)=0] [L36] CALL, EXPR __fpclassify_float(x) VAL [\old(x)=4286578691] [L13] __uint32_t w; VAL [\old(x)=4286578691, x=4286578691] [L16] ieee_float_shape_type gf_u; [L17] gf_u.value = (x) [L18] EXPR gf_u.word [L18] (w) = gf_u.word [L21] COND FALSE !(w == 0x00000000 || w == 0x80000000) VAL [\old(x)=4286578691, w=4286578689, x=4286578691] [L23-L24] COND FALSE !((w >= 0x00800000 && w <= 0x7f7fffff) || (w >= 0x80800000 && w <= 0xff7fffff)) VAL [\old(x)=4286578691, w=4286578689, x=4286578691] [L26-L27] COND FALSE !((w >= 0x00000001 && w <= 0x007fffff) || (w >= 0x80000001 && w <= 0x807fffff)) VAL [\old(x)=4286578691, w=4286578689, x=4286578691] [L29] COND FALSE !(w == 0x7f800000 || w == 0xff800000) [L32] return 0; VAL [\old(x)=4286578691, \result=0, w=4286578689, x=4286578691] [L36] RET, EXPR __fpclassify_float(x) VAL [\old(x)=4286578691, \old(y)=0, __fpclassify_float(x)=0, x=4286578691, y=0] [L36] COND TRUE __fpclassify_float(x) == 0 [L37] return y; VAL [\old(x)=4286578691, \old(y)=0, \result=0, x=4286578691, y=0] [L66] RET, EXPR fmin_float(x, y) VAL [fmin_float(x, y)=0, x=4286578691, y=0] [L66] float res = fmin_float(x, y); [L69] EXPR res == -0.0f && __signbit_float(res) == 1 VAL [res=0, res == -0.0f && __signbit_float(res) == 1=0, x=4286578691, y=0] [L69] COND TRUE !(res == -0.0f && __signbit_float(res) == 1) [L70] __VERIFIER_error() VAL [res=0, x=4286578691, y=0] - 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, 0.2s 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 18:05:12,288 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-28 18:05:12,290 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-28 18:05:12,307 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-28 18:05:12,308 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-28 18:05:12,310 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-28 18:05:12,313 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-28 18:05:12,317 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-28 18:05:12,320 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-28 18:05:12,322 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-28 18:05:12,330 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-28 18:05:12,331 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-28 18:05:12,332 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-28 18:05:12,333 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-28 18:05:12,334 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-28 18:05:12,335 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-28 18:05:12,336 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-28 18:05:12,337 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-28 18:05:12,339 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-28 18:05:12,341 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-28 18:05:12,342 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-28 18:05:12,343 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-28 18:05:12,345 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-28 18:05:12,345 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-28 18:05:12,345 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-28 18:05:12,346 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-28 18:05:12,347 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-28 18:05:12,348 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-28 18:05:12,348 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-28 18:05:12,349 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-28 18:05:12,350 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-28 18:05:12,350 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-28 18:05:12,351 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-28 18:05:12,351 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-28 18:05:12,352 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-28 18:05:12,352 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-28 18:05:12,353 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2018-11-28 18:05:12,371 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-28 18:05:12,372 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-28 18:05:12,373 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-28 18:05:12,373 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-11-28 18:05:12,374 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-28 18:05:12,374 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-28 18:05:12,374 INFO L133 SettingsManager]: * Use SBE=true [2018-11-28 18:05:12,376 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-28 18:05:12,376 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-28 18:05:12,376 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-28 18:05:12,377 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-28 18:05:12,377 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-28 18:05:12,377 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-28 18:05:12,377 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-28 18:05:12,377 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-11-28 18:05:12,378 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-11-28 18:05:12,378 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-28 18:05:12,379 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-28 18:05:12,379 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-28 18:05:12,379 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-28 18:05:12,379 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-28 18:05:12,379 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-28 18:05:12,379 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-28 18:05:12,382 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-28 18:05:12,382 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-28 18:05:12,382 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-28 18:05:12,383 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-28 18:05:12,383 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-28 18:05:12,383 INFO L133 SettingsManager]: * Trace refinement strategy=WOLF [2018-11-28 18:05:12,383 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-28 18:05:12,383 INFO L133 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2018-11-28 18:05:12,384 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-11-28 18:05:12,384 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 -> 36a0a55241cede481b157c1ab9f348d708a5b166 [2018-11-28 18:05:12,459 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-28 18:05:12,477 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-28 18:05:12,485 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-28 18:05:12,487 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-28 18:05:12,487 INFO L276 PluginConnector]: CDTParser initialized [2018-11-28 18:05:12,488 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/float-newlib/float_req_bl_1232b_false-unreach-call.c [2018-11-28 18:05:12,557 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/57f07c6ab/fbca0b84060543549740fe63757b63e9/FLAGc8c0c9a48 [2018-11-28 18:05:13,040 INFO L307 CDTParser]: Found 1 translation units. [2018-11-28 18:05:13,040 INFO L161 CDTParser]: Scanning /storage/repos/svcomp/c/float-newlib/float_req_bl_1232b_false-unreach-call.c [2018-11-28 18:05:13,047 INFO L355 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/57f07c6ab/fbca0b84060543549740fe63757b63e9/FLAGc8c0c9a48 [2018-11-28 18:05:13,395 INFO L363 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/57f07c6ab/fbca0b84060543549740fe63757b63e9 [2018-11-28 18:05:13,400 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-28 18:05:13,402 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-28 18:05:13,403 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-28 18:05:13,403 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-28 18:05:13,407 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-28 18:05:13,408 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 06:05:13" (1/1) ... [2018-11-28 18:05:13,412 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ac9139 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:05:13, skipping insertion in model container [2018-11-28 18:05:13,412 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 06:05:13" (1/1) ... [2018-11-28 18:05:13,423 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-28 18:05:13,450 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-28 18:05:13,672 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 18:05:13,681 INFO L191 MainTranslator]: Completed pre-run [2018-11-28 18:05:13,724 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 18:05:13,755 INFO L195 MainTranslator]: Completed translation [2018-11-28 18:05:13,755 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:05:13 WrapperNode [2018-11-28 18:05:13,755 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-28 18:05:13,756 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-28 18:05:13,756 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-28 18:05:13,756 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-28 18:05:13,765 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:05:13" (1/1) ... [2018-11-28 18:05:13,778 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:05:13" (1/1) ... [2018-11-28 18:05:13,786 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-28 18:05:13,786 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-28 18:05:13,787 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-28 18:05:13,787 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-28 18:05:13,795 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:05:13" (1/1) ... [2018-11-28 18:05:13,795 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:05:13" (1/1) ... [2018-11-28 18:05:13,799 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:05:13" (1/1) ... [2018-11-28 18:05:13,799 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:05:13" (1/1) ... [2018-11-28 18:05:13,812 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:05:13" (1/1) ... [2018-11-28 18:05:13,818 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:05:13" (1/1) ... [2018-11-28 18:05:13,821 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:05:13" (1/1) ... [2018-11-28 18:05:13,895 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-28 18:05:13,895 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-28 18:05:13,895 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-28 18:05:13,895 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-28 18:05:13,896 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:05:13" (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 18:05:13,964 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-28 18:05:13,965 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-28 18:05:13,965 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_float [2018-11-28 18:05:13,965 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_float [2018-11-28 18:05:13,965 INFO L130 BoogieDeclarations]: Found specification of procedure fmin_float [2018-11-28 18:05:13,965 INFO L138 BoogieDeclarations]: Found implementation of procedure fmin_float [2018-11-28 18:05:13,965 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-28 18:05:13,965 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-28 18:05:13,966 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-28 18:05:13,966 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2018-11-28 18:05:13,966 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-28 18:05:13,966 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-28 18:05:13,966 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2018-11-28 18:05:13,966 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_float [2018-11-28 18:05:13,966 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_float [2018-11-28 18:05:13,967 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-28 18:05:14,429 WARN L317 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-28 18:05:14,532 WARN L317 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-28 18:05:14,537 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-28 18:05:14,538 INFO L280 CfgBuilder]: Removed 4 assue(true) statements. [2018-11-28 18:05:14,538 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 06:05:14 BoogieIcfgContainer [2018-11-28 18:05:14,538 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-28 18:05:14,540 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-28 18:05:14,540 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-28 18:05:14,543 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-28 18:05:14,543 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 06:05:13" (1/3) ... [2018-11-28 18:05:14,544 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52c8c7f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 06:05:14, skipping insertion in model container [2018-11-28 18:05:14,545 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:05:13" (2/3) ... [2018-11-28 18:05:14,545 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52c8c7f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 06:05:14, skipping insertion in model container [2018-11-28 18:05:14,545 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 06:05:14" (3/3) ... [2018-11-28 18:05:14,547 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_1232b_false-unreach-call.c [2018-11-28 18:05:14,561 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-28 18:05:14,568 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-28 18:05:14,586 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-28 18:05:14,620 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-28 18:05:14,621 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-28 18:05:14,622 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-28 18:05:14,622 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-28 18:05:14,622 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-28 18:05:14,623 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-28 18:05:14,623 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-28 18:05:14,623 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-28 18:05:14,623 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-28 18:05:14,642 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states. [2018-11-28 18:05:14,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-11-28 18:05:14,648 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 18:05:14,649 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 18:05:14,652 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 18:05:14,658 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 18:05:14,659 INFO L82 PathProgramCache]: Analyzing trace with hash 148552213, now seen corresponding path program 1 times [2018-11-28 18:05:14,663 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-28 18:05:14,663 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 18:05:14,671 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 18:05:14,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 18:05:14,735 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 18:05:14,754 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 18:05:14,755 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-28 18:05:14,771 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 18:05:14,771 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-28 18:05:14,775 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-28 18:05:14,790 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-28 18:05:14,791 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-28 18:05:14,794 INFO L87 Difference]: Start difference. First operand 42 states. Second operand 2 states. [2018-11-28 18:05:14,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 18:05:14,822 INFO L93 Difference]: Finished difference Result 75 states and 103 transitions. [2018-11-28 18:05:14,822 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-28 18:05:14,824 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 21 [2018-11-28 18:05:14,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 18:05:14,837 INFO L225 Difference]: With dead ends: 75 [2018-11-28 18:05:14,837 INFO L226 Difference]: Without dead ends: 38 [2018-11-28 18:05:14,841 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 18:05:14,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2018-11-28 18:05:14,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2018-11-28 18:05:14,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2018-11-28 18:05:14,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 46 transitions. [2018-11-28 18:05:14,897 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 46 transitions. Word has length 21 [2018-11-28 18:05:14,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 18:05:14,898 INFO L480 AbstractCegarLoop]: Abstraction has 38 states and 46 transitions. [2018-11-28 18:05:14,898 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-28 18:05:14,898 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 46 transitions. [2018-11-28 18:05:14,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-11-28 18:05:14,900 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 18:05:14,901 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 18:05:14,901 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 18:05:14,901 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 18:05:14,901 INFO L82 PathProgramCache]: Analyzing trace with hash 1171864516, now seen corresponding path program 1 times [2018-11-28 18:05:14,902 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-28 18:05:14,902 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 18:05:14,909 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 18:05:14,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 18:05:14,961 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 18:05:15,062 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 18:05:15,062 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-28 18:05:15,075 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 18:05:15,075 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-28 18:05:15,077 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-28 18:05:15,077 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-28 18:05:15,078 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-28 18:05:15,078 INFO L87 Difference]: Start difference. First operand 38 states and 46 transitions. Second operand 4 states. [2018-11-28 18:05:15,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 18:05:15,144 INFO L93 Difference]: Finished difference Result 56 states and 66 transitions. [2018-11-28 18:05:15,146 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-28 18:05:15,147 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 22 [2018-11-28 18:05:15,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 18:05:15,150 INFO L225 Difference]: With dead ends: 56 [2018-11-28 18:05:15,150 INFO L226 Difference]: Without dead ends: 41 [2018-11-28 18:05:15,151 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 18:05:15,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2018-11-28 18:05:15,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2018-11-28 18:05:15,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-11-28 18:05:15,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 50 transitions. [2018-11-28 18:05:15,173 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 50 transitions. Word has length 22 [2018-11-28 18:05:15,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 18:05:15,174 INFO L480 AbstractCegarLoop]: Abstraction has 41 states and 50 transitions. [2018-11-28 18:05:15,174 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-28 18:05:15,174 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 50 transitions. [2018-11-28 18:05:15,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-11-28 18:05:15,176 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 18:05:15,176 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 18:05:15,176 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 18:05:15,177 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 18:05:15,177 INFO L82 PathProgramCache]: Analyzing trace with hash 1456590866, now seen corresponding path program 1 times [2018-11-28 18:05:15,178 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-28 18:05:15,178 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 18:05:15,190 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 18:05:15,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 18:05:15,243 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 18:05:15,650 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 18:05:15,650 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-28 18:05:15,667 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 18:05:15,667 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-11-28 18:05:15,669 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-28 18:05:15,670 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-28 18:05:15,670 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-11-28 18:05:15,670 INFO L87 Difference]: Start difference. First operand 41 states and 50 transitions. Second operand 8 states. [2018-11-28 18:05:16,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 18:05:16,714 INFO L93 Difference]: Finished difference Result 60 states and 73 transitions. [2018-11-28 18:05:16,722 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-28 18:05:16,722 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 23 [2018-11-28 18:05:16,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 18:05:16,724 INFO L225 Difference]: With dead ends: 60 [2018-11-28 18:05:16,724 INFO L226 Difference]: Without dead ends: 40 [2018-11-28 18:05:16,725 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 18:05:16,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2018-11-28 18:05:16,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2018-11-28 18:05:16,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2018-11-28 18:05:16,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 47 transitions. [2018-11-28 18:05:16,734 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 47 transitions. Word has length 23 [2018-11-28 18:05:16,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 18:05:16,734 INFO L480 AbstractCegarLoop]: Abstraction has 40 states and 47 transitions. [2018-11-28 18:05:16,734 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-28 18:05:16,736 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 47 transitions. [2018-11-28 18:05:16,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-11-28 18:05:16,738 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 18:05:16,738 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 18:05:16,739 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 18:05:16,739 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 18:05:16,739 INFO L82 PathProgramCache]: Analyzing trace with hash -1971562729, now seen corresponding path program 1 times [2018-11-28 18:05:16,740 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-28 18:05:16,740 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 18:05:16,753 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 18:05:16,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 18:05:16,818 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 18:05:16,851 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 18:05:16,852 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-28 18:05:16,864 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 18:05:16,864 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-28 18:05:16,865 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-28 18:05:16,865 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-28 18:05:16,865 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-28 18:05:16,866 INFO L87 Difference]: Start difference. First operand 40 states and 47 transitions. Second operand 4 states. [2018-11-28 18:05:16,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 18:05:16,900 INFO L93 Difference]: Finished difference Result 56 states and 64 transitions. [2018-11-28 18:05:16,900 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-28 18:05:16,900 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 30 [2018-11-28 18:05:16,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 18:05:16,902 INFO L225 Difference]: With dead ends: 56 [2018-11-28 18:05:16,902 INFO L226 Difference]: Without dead ends: 41 [2018-11-28 18:05:16,903 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 18:05:16,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2018-11-28 18:05:16,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2018-11-28 18:05:16,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-11-28 18:05:16,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 48 transitions. [2018-11-28 18:05:16,911 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 48 transitions. Word has length 30 [2018-11-28 18:05:16,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 18:05:16,912 INFO L480 AbstractCegarLoop]: Abstraction has 41 states and 48 transitions. [2018-11-28 18:05:16,912 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-28 18:05:16,912 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 48 transitions. [2018-11-28 18:05:16,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-11-28 18:05:16,914 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 18:05:16,914 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 18:05:16,914 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 18:05:16,914 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 18:05:16,914 INFO L82 PathProgramCache]: Analyzing trace with hash 1323623109, now seen corresponding path program 1 times [2018-11-28 18:05:16,915 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-28 18:05:16,915 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 18:05:16,924 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 18:05:16,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 18:05:16,982 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 18:05:17,121 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 18:05:17,121 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-28 18:05:17,134 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 18:05:17,134 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-11-28 18:05:17,135 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-28 18:05:17,135 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-28 18:05:17,135 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-11-28 18:05:17,138 INFO L87 Difference]: Start difference. First operand 41 states and 48 transitions. Second operand 8 states. [2018-11-28 18:05:17,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 18:05:17,893 INFO L93 Difference]: Finished difference Result 58 states and 66 transitions. [2018-11-28 18:05:17,894 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-28 18:05:17,895 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 31 [2018-11-28 18:05:17,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 18:05:17,896 INFO L225 Difference]: With dead ends: 58 [2018-11-28 18:05:17,897 INFO L226 Difference]: Without dead ends: 35 [2018-11-28 18:05:17,897 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2018-11-28 18:05:17,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2018-11-28 18:05:17,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2018-11-28 18:05:17,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2018-11-28 18:05:17,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 37 transitions. [2018-11-28 18:05:17,903 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 37 transitions. Word has length 31 [2018-11-28 18:05:17,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 18:05:17,904 INFO L480 AbstractCegarLoop]: Abstraction has 35 states and 37 transitions. [2018-11-28 18:05:17,904 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-28 18:05:17,904 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 37 transitions. [2018-11-28 18:05:17,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-11-28 18:05:17,905 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 18:05:17,905 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 18:05:17,905 INFO L423 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 18:05:17,906 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 18:05:17,906 INFO L82 PathProgramCache]: Analyzing trace with hash 207693948, now seen corresponding path program 1 times [2018-11-28 18:05:17,906 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-28 18:05:17,906 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 18:05:17,911 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 18:05:17,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 18:05:17,977 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 18:05:18,059 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 18:05:18,059 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-28 18:05:18,072 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 18:05:18,072 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-28 18:05:18,072 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-28 18:05:18,073 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-28 18:05:18,073 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-28 18:05:18,073 INFO L87 Difference]: Start difference. First operand 35 states and 37 transitions. Second operand 5 states. [2018-11-28 18:05:18,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 18:05:18,166 INFO L93 Difference]: Finished difference Result 51 states and 53 transitions. [2018-11-28 18:05:18,175 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-28 18:05:18,175 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 32 [2018-11-28 18:05:18,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 18:05:18,176 INFO L225 Difference]: With dead ends: 51 [2018-11-28 18:05:18,176 INFO L226 Difference]: Without dead ends: 35 [2018-11-28 18:05:18,177 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 18:05:18,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2018-11-28 18:05:18,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2018-11-28 18:05:18,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2018-11-28 18:05:18,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 36 transitions. [2018-11-28 18:05:18,183 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 36 transitions. Word has length 32 [2018-11-28 18:05:18,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 18:05:18,183 INFO L480 AbstractCegarLoop]: Abstraction has 35 states and 36 transitions. [2018-11-28 18:05:18,183 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-28 18:05:18,185 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 36 transitions. [2018-11-28 18:05:18,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-11-28 18:05:18,186 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 18:05:18,186 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 18:05:18,186 INFO L423 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 18:05:18,187 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 18:05:18,188 INFO L82 PathProgramCache]: Analyzing trace with hash -601652678, now seen corresponding path program 1 times [2018-11-28 18:05:18,188 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-28 18:05:18,188 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 18:05:18,200 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 18:05:18,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 18:05:18,263 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 18:05:18,414 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 18:05:18,414 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-28 18:05:18,424 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 18:05:18,424 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-11-28 18:05:18,425 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-28 18:05:18,425 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-28 18:05:18,425 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-11-28 18:05:18,425 INFO L87 Difference]: Start difference. First operand 35 states and 36 transitions. Second operand 8 states. [2018-11-28 18:05:18,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 18:05:18,768 INFO L93 Difference]: Finished difference Result 38 states and 38 transitions. [2018-11-28 18:05:18,769 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-28 18:05:18,770 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 32 [2018-11-28 18:05:18,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 18:05:18,771 INFO L225 Difference]: With dead ends: 38 [2018-11-28 18:05:18,771 INFO L226 Difference]: Without dead ends: 35 [2018-11-28 18:05:18,771 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 18:05:18,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2018-11-28 18:05:18,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2018-11-28 18:05:18,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2018-11-28 18:05:18,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 35 transitions. [2018-11-28 18:05:18,779 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 35 transitions. Word has length 32 [2018-11-28 18:05:18,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 18:05:18,779 INFO L480 AbstractCegarLoop]: Abstraction has 35 states and 35 transitions. [2018-11-28 18:05:18,779 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-28 18:05:18,779 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 35 transitions. [2018-11-28 18:05:18,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2018-11-28 18:05:18,782 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 18:05:18,782 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 18:05:18,783 INFO L423 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 18:05:18,783 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 18:05:18,783 INFO L82 PathProgramCache]: Analyzing trace with hash -193082209, now seen corresponding path program 1 times [2018-11-28 18:05:18,783 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-28 18:05:18,784 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 18:05:18,791 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 18:05:18,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 18:05:18,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 18:05:19,000 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2018-11-28 18:05:19,068 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 06:05:19 BoogieIcfgContainer [2018-11-28 18:05:19,068 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-28 18:05:19,069 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-28 18:05:19,069 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-28 18:05:19,069 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-28 18:05:19,070 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 06:05:14" (3/4) ... [2018-11-28 18:05:19,075 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2018-11-28 18:05:19,171 INFO L145 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2018-11-28 18:05:19,171 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-28 18:05:19,172 INFO L168 Benchmark]: Toolchain (without parser) took 5771.92 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 138.4 MB). Free memory was 947.3 MB in the beginning and 903.5 MB in the end (delta: 43.9 MB). Peak memory consumption was 182.3 MB. Max. memory is 11.5 GB. [2018-11-28 18:05:19,175 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 978.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 18:05:19,176 INFO L168 Benchmark]: CACSL2BoogieTranslator took 352.79 ms. Allocated memory is still 1.0 GB. Free memory was 947.3 MB in the beginning and 936.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-28 18:05:19,176 INFO L168 Benchmark]: Boogie Procedure Inliner took 30.13 ms. Allocated memory is still 1.0 GB. Free memory was 936.6 MB in the beginning and 931.2 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-11-28 18:05:19,177 INFO L168 Benchmark]: Boogie Preprocessor took 108.36 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 138.4 MB). Free memory was 931.2 MB in the beginning and 1.1 GB in the end (delta: -202.3 MB). Peak memory consumption was 13.8 MB. Max. memory is 11.5 GB. [2018-11-28 18:05:19,180 INFO L168 Benchmark]: RCFGBuilder took 643.40 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: 26.2 MB). Peak memory consumption was 26.2 MB. Max. memory is 11.5 GB. [2018-11-28 18:05:19,180 INFO L168 Benchmark]: TraceAbstraction took 4528.93 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 903.5 MB in the end (delta: 203.9 MB). Peak memory consumption was 203.9 MB. Max. memory is 11.5 GB. [2018-11-28 18:05:19,182 INFO L168 Benchmark]: Witness Printer took 102.54 ms. Allocated memory is still 1.2 GB. Free memory is still 903.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 18:05:19,188 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 978.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 352.79 ms. Allocated memory is still 1.0 GB. Free memory was 947.3 MB in the beginning and 936.6 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 30.13 ms. Allocated memory is still 1.0 GB. Free memory was 936.6 MB in the beginning and 931.2 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 108.36 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 138.4 MB). Free memory was 931.2 MB in the beginning and 1.1 GB in the end (delta: -202.3 MB). Peak memory consumption was 13.8 MB. Max. memory is 11.5 GB. * RCFGBuilder took 643.40 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: 26.2 MB). Peak memory consumption was 26.2 MB. Max. memory is 11.5 GB. * TraceAbstraction took 4528.93 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 903.5 MB in the end (delta: 203.9 MB). Peak memory consumption was 203.9 MB. Max. memory is 11.5 GB. * Witness Printer took 102.54 ms. Allocated memory is still 1.2 GB. Free memory is still 903.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 70]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L64] float x = -0.0f; [L65] float y = 0.0f; VAL [x=0.0, y=0.0] [L66] CALL, EXPR fmin_float(x, y) VAL [\old(x)=0.0, \old(y)=0.0] [L36] CALL, EXPR __fpclassify_float(x) VAL [\old(x)=0.0] [L13] __uint32_t w; VAL [\old(x)=0.0, x=0.0] [L16] ieee_float_shape_type gf_u; [L17] gf_u.value = (x) [L18] EXPR gf_u.word [L18] (w) = gf_u.word [L21] COND TRUE w == 0x00000000 || w == 0x80000000 [L22] return 2; VAL [\old(x)=0.0, \result=2, w=2147483648, x=0.0] [L36] RET, EXPR __fpclassify_float(x) VAL [\old(x)=0.0, \old(y)=0.0, __fpclassify_float(x)=2, x=0.0, y=0.0] [L36] COND FALSE !(__fpclassify_float(x) == 0) [L38] CALL, EXPR __fpclassify_float(y) VAL [\old(x)=0.0] [L13] __uint32_t w; VAL [\old(x)=0.0, x=0.0] [L16] ieee_float_shape_type gf_u; [L17] gf_u.value = (x) [L18] EXPR gf_u.word [L18] (w) = gf_u.word [L21] COND TRUE w == 0x00000000 || w == 0x80000000 [L22] return 2; VAL [\old(x)=0.0, \result=2, w=0, x=0.0] [L38] RET, EXPR __fpclassify_float(y) VAL [\old(x)=0.0, \old(y)=0.0, __fpclassify_float(y)=2, x=0.0, y=0.0] [L38] COND FALSE !(__fpclassify_float(y) == 0) [L41] 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] [L41] return x < y ? x : y; [L66] RET, EXPR fmin_float(x, y) VAL [fmin_float(x, y)=0.0, x=0.0, y=0.0] [L66] float res = fmin_float(x, y); [L69] EXPR res == -0.0f && __signbit_float(res) == 1 VAL [res=0.0, res == -0.0f && __signbit_float(res) == 1=1, x=0.0, y=0.0] [L69] CALL, EXPR __signbit_float(res) VAL [\old(x)=0.0] [L45] __uint32_t w; VAL [\old(x)=0.0, x=0.0] [L48] ieee_float_shape_type gf_u; [L49] gf_u.value = (x) [L50] EXPR gf_u.word [L50] (w) = gf_u.word [L53] return (w & 0x80000000) != 0; VAL [\old(x)=0.0, \result=0, w=0, x=0.0] [L69] RET, EXPR __signbit_float(res) VAL [__signbit_float(res)=0, res=0.0, res == -0.0f && __signbit_float(res) == 1=1, x=0.0, y=0.0] [L69] EXPR res == -0.0f && __signbit_float(res) == 1 VAL [__signbit_float(res)=0, res=0.0, res == -0.0f && __signbit_float(res) == 1=0, x=0.0, y=0.0] [L69] COND TRUE !(res == -0.0f && __signbit_float(res) == 1) [L70] __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, 4.4s OverallTime, 8 OverallIterations, 2 TraceHistogramMax, 2.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 272 SDtfs, 111 SDslu, 739 SDs, 0 SdLazy, 268 SolverSat, 7 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 196 GetRequests, 159 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 1.5s 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: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 231 NumberOfCodeBlocks, 231 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 184 ConstructedInterpolants, 12 QuantifiedInterpolants, 13359 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...