./Ultimate.py --spec /storage/repos/svcomp/c/properties/unreach-call.prp --file /storage/repos/svcomp/c/float-newlib/double_req_bl_1252b_false-unreach-call.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 91b1670e Calling Ultimate with: java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/svcomp/c/float-newlib/double_req_bl_1252b_false-unreach-call.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 6f57b560c2271100a3cc213cf38aa06905e4b86e ..................................................................................................................................................................................................................................................................................................................................................................................... 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/double_req_bl_1252b_false-unreach-call.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 6f57b560c2271100a3cc213cf38aa06905e4b86e ....................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 18:05:03,423 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-28 18:05:03,425 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-28 18:05:03,442 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-28 18:05:03,443 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-28 18:05:03,444 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-28 18:05:03,446 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-28 18:05:03,448 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-28 18:05:03,451 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-28 18:05:03,452 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-28 18:05:03,453 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-28 18:05:03,453 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-28 18:05:03,454 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-28 18:05:03,455 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-28 18:05:03,457 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-28 18:05:03,457 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-28 18:05:03,458 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-28 18:05:03,460 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-28 18:05:03,462 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-28 18:05:03,464 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-28 18:05:03,465 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-28 18:05:03,466 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-28 18:05:03,469 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-28 18:05:03,469 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-28 18:05:03,470 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-28 18:05:03,471 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-28 18:05:03,472 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-28 18:05:03,473 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-28 18:05:03,473 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-28 18:05:03,475 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-28 18:05:03,475 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-28 18:05:03,476 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-28 18:05:03,476 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-28 18:05:03,476 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-28 18:05:03,477 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-28 18:05:03,478 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-28 18:05:03,478 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-11-28 18:05:03,496 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-28 18:05:03,497 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-28 18:05:03,498 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-28 18:05:03,498 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-11-28 18:05:03,500 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-28 18:05:03,501 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-28 18:05:03,501 INFO L133 SettingsManager]: * Use SBE=true [2018-11-28 18:05:03,502 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-28 18:05:03,502 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-28 18:05:03,502 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-28 18:05:03,502 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-28 18:05:03,502 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-28 18:05:03,502 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-28 18:05:03,503 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-28 18:05:03,503 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-28 18:05:03,503 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-28 18:05:03,503 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-28 18:05:03,503 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-28 18:05:03,503 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-28 18:05:03,506 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-28 18:05:03,506 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-28 18:05:03,506 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-28 18:05:03,506 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-28 18:05:03,506 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-28 18:05:03,508 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-28 18:05:03,508 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-28 18:05:03,508 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-28 18:05:03,509 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-28 18:05:03,509 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-28 18:05:03,509 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-28 18:05:03,509 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 -> 6f57b560c2271100a3cc213cf38aa06905e4b86e [2018-11-28 18:05:03,567 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-28 18:05:03,584 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-28 18:05:03,590 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-28 18:05:03,592 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-28 18:05:03,592 INFO L276 PluginConnector]: CDTParser initialized [2018-11-28 18:05:03,593 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/float-newlib/double_req_bl_1252b_false-unreach-call.c [2018-11-28 18:05:03,660 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/afe62d296/f3ddd4b627b5408f8634b1b27877a74a/FLAGc8306ea74 [2018-11-28 18:05:04,208 INFO L307 CDTParser]: Found 1 translation units. [2018-11-28 18:05:04,208 INFO L161 CDTParser]: Scanning /storage/repos/svcomp/c/float-newlib/double_req_bl_1252b_false-unreach-call.c [2018-11-28 18:05:04,216 INFO L355 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/afe62d296/f3ddd4b627b5408f8634b1b27877a74a/FLAGc8306ea74 [2018-11-28 18:05:04,545 INFO L363 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/afe62d296/f3ddd4b627b5408f8634b1b27877a74a [2018-11-28 18:05:04,548 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-28 18:05:04,550 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-28 18:05:04,551 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-28 18:05:04,551 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-28 18:05:04,555 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-28 18:05:04,556 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 06:05:04" (1/1) ... [2018-11-28 18:05:04,559 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2565b023 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:05:04, skipping insertion in model container [2018-11-28 18:05:04,559 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 06:05:04" (1/1) ... [2018-11-28 18:05:04,567 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-28 18:05:04,589 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-28 18:05:04,819 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 18:05:04,824 INFO L191 MainTranslator]: Completed pre-run [2018-11-28 18:05:04,864 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 18:05:04,892 INFO L195 MainTranslator]: Completed translation [2018-11-28 18:05:04,893 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:05:04 WrapperNode [2018-11-28 18:05:04,893 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-28 18:05:04,894 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-28 18:05:04,894 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-28 18:05:04,894 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-28 18:05:04,902 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:05:04" (1/1) ... [2018-11-28 18:05:04,914 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:05:04" (1/1) ... [2018-11-28 18:05:04,922 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-28 18:05:04,923 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-28 18:05:04,923 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-28 18:05:04,923 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-28 18:05:04,931 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:05:04" (1/1) ... [2018-11-28 18:05:04,932 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:05:04" (1/1) ... [2018-11-28 18:05:04,934 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:05:04" (1/1) ... [2018-11-28 18:05:04,935 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:05:04" (1/1) ... [2018-11-28 18:05:04,946 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:05:04" (1/1) ... [2018-11-28 18:05:04,952 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:05:04" (1/1) ... [2018-11-28 18:05:04,954 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:05:04" (1/1) ... [2018-11-28 18:05:04,957 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-28 18:05:04,958 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-28 18:05:04,958 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-28 18:05:04,958 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-28 18:05:04,959 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:05:04" (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 18:05:05,089 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_double [2018-11-28 18:05:05,089 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_double [2018-11-28 18:05:05,090 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-28 18:05:05,090 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-28 18:05:05,090 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_double [2018-11-28 18:05:05,090 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_double [2018-11-28 18:05:05,090 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-28 18:05:05,091 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-28 18:05:05,091 INFO L130 BoogieDeclarations]: Found specification of procedure fmax_double [2018-11-28 18:05:05,091 INFO L138 BoogieDeclarations]: Found implementation of procedure fmax_double [2018-11-28 18:05:05,091 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2018-11-28 18:05:05,091 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-28 18:05:05,091 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-28 18:05:05,092 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-28 18:05:05,092 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-11-28 18:05:05,092 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-28 18:05:05,644 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-28 18:05:05,644 INFO L280 CfgBuilder]: Removed 4 assue(true) statements. [2018-11-28 18:05:05,645 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 06:05:05 BoogieIcfgContainer [2018-11-28 18:05:05,645 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-28 18:05:05,646 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-28 18:05:05,646 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-28 18:05:05,650 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-28 18:05:05,650 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 06:05:04" (1/3) ... [2018-11-28 18:05:05,651 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@488f60c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 06:05:05, skipping insertion in model container [2018-11-28 18:05:05,651 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:05:04" (2/3) ... [2018-11-28 18:05:05,652 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@488f60c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 06:05:05, skipping insertion in model container [2018-11-28 18:05:05,652 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 06:05:05" (3/3) ... [2018-11-28 18:05:05,654 INFO L112 eAbstractionObserver]: Analyzing ICFG double_req_bl_1252b_false-unreach-call.c [2018-11-28 18:05:05,665 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-28 18:05:05,675 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-28 18:05:05,692 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-28 18:05:05,725 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-28 18:05:05,725 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-28 18:05:05,726 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-28 18:05:05,726 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-28 18:05:05,726 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-28 18:05:05,726 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-28 18:05:05,726 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-28 18:05:05,727 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-28 18:05:05,727 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-28 18:05:05,747 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states. [2018-11-28 18:05:05,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-11-28 18:05:05,754 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 18:05:05,755 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 18:05:05,757 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 18:05:05,763 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 18:05:05,763 INFO L82 PathProgramCache]: Analyzing trace with hash 1757694217, now seen corresponding path program 1 times [2018-11-28 18:05:05,765 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 18:05:05,765 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 18:05:05,812 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 18:05:05,813 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 18:05:05,813 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 18:05:05,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 18:05:05,924 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 18:05:05,927 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 18:05:05,928 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-28 18:05:05,933 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-28 18:05:05,949 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-28 18:05:05,950 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-28 18:05:05,953 INFO L87 Difference]: Start difference. First operand 44 states. Second operand 2 states. [2018-11-28 18:05:05,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 18:05:05,985 INFO L93 Difference]: Finished difference Result 79 states and 107 transitions. [2018-11-28 18:05:05,985 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-28 18:05:05,987 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 22 [2018-11-28 18:05:05,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 18:05:06,000 INFO L225 Difference]: With dead ends: 79 [2018-11-28 18:05:06,000 INFO L226 Difference]: Without dead ends: 40 [2018-11-28 18:05:06,005 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 18:05:06,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2018-11-28 18:05:06,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2018-11-28 18:05:06,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2018-11-28 18:05:06,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 48 transitions. [2018-11-28 18:05:06,058 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 48 transitions. Word has length 22 [2018-11-28 18:05:06,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 18:05:06,059 INFO L480 AbstractCegarLoop]: Abstraction has 40 states and 48 transitions. [2018-11-28 18:05:06,059 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-28 18:05:06,060 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 48 transitions. [2018-11-28 18:05:06,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-11-28 18:05:06,066 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 18:05:06,066 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 18:05:06,067 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 18:05:06,067 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 18:05:06,067 INFO L82 PathProgramCache]: Analyzing trace with hash 1795675250, now seen corresponding path program 1 times [2018-11-28 18:05:06,067 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 18:05:06,067 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 18:05:06,069 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 18:05:06,070 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 18:05:06,070 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 18:05:06,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 18:05:06,260 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 18:05:06,260 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 18:05:06,261 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-28 18:05:06,262 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-28 18:05:06,262 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-28 18:05:06,263 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-28 18:05:06,263 INFO L87 Difference]: Start difference. First operand 40 states and 48 transitions. Second operand 4 states. [2018-11-28 18:05:06,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 18:05:06,357 INFO L93 Difference]: Finished difference Result 59 states and 69 transitions. [2018-11-28 18:05:06,358 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-28 18:05:06,358 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 23 [2018-11-28 18:05:06,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 18:05:06,362 INFO L225 Difference]: With dead ends: 59 [2018-11-28 18:05:06,362 INFO L226 Difference]: Without dead ends: 44 [2018-11-28 18:05:06,363 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 18:05:06,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2018-11-28 18:05:06,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2018-11-28 18:05:06,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2018-11-28 18:05:06,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 53 transitions. [2018-11-28 18:05:06,374 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 53 transitions. Word has length 23 [2018-11-28 18:05:06,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 18:05:06,375 INFO L480 AbstractCegarLoop]: Abstraction has 44 states and 53 transitions. [2018-11-28 18:05:06,375 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-28 18:05:06,375 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 53 transitions. [2018-11-28 18:05:06,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-11-28 18:05:06,376 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 18:05:06,376 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 18:05:06,377 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 18:05:06,377 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 18:05:06,377 INFO L82 PathProgramCache]: Analyzing trace with hash 2106279408, now seen corresponding path program 1 times [2018-11-28 18:05:06,377 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 18:05:06,377 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 18:05:06,378 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 18:05:06,379 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 18:05:06,379 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 18:05:06,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 18:05:06,511 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 18:05:06,512 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 18:05:06,512 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-28 18:05:06,512 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-28 18:05:06,512 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-28 18:05:06,513 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-28 18:05:06,513 INFO L87 Difference]: Start difference. First operand 44 states and 53 transitions. Second operand 4 states. [2018-11-28 18:05:06,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 18:05:06,645 INFO L93 Difference]: Finished difference Result 63 states and 74 transitions. [2018-11-28 18:05:06,646 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-28 18:05:06,647 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 26 [2018-11-28 18:05:06,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 18:05:06,648 INFO L225 Difference]: With dead ends: 63 [2018-11-28 18:05:06,648 INFO L226 Difference]: Without dead ends: 48 [2018-11-28 18:05:06,649 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 18:05:06,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2018-11-28 18:05:06,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 44. [2018-11-28 18:05:06,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2018-11-28 18:05:06,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 53 transitions. [2018-11-28 18:05:06,658 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 53 transitions. Word has length 26 [2018-11-28 18:05:06,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 18:05:06,658 INFO L480 AbstractCegarLoop]: Abstraction has 44 states and 53 transitions. [2018-11-28 18:05:06,658 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-28 18:05:06,658 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 53 transitions. [2018-11-28 18:05:06,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-11-28 18:05:06,659 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 18:05:06,660 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 18:05:06,660 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 18:05:06,660 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 18:05:06,660 INFO L82 PathProgramCache]: Analyzing trace with hash 309328049, now seen corresponding path program 1 times [2018-11-28 18:05:06,660 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 18:05:06,661 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 18:05:06,661 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 18:05:06,662 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 18:05:06,663 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 18:05:06,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 18:05:06,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 18:05:06,779 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2018-11-28 18:05:06,816 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 06:05:06 BoogieIcfgContainer [2018-11-28 18:05:06,816 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-28 18:05:06,816 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-28 18:05:06,816 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-28 18:05:06,817 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-28 18:05:06,817 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 06:05:05" (3/4) ... [2018-11-28 18:05:06,821 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-11-28 18:05:06,821 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-28 18:05:06,822 INFO L168 Benchmark]: Toolchain (without parser) took 2273.50 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 133.7 MB). Free memory was 951.3 MB in the beginning and 1.1 GB in the end (delta: -109.6 MB). Peak memory consumption was 24.1 MB. Max. memory is 11.5 GB. [2018-11-28 18:05:06,824 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 18:05:06,825 INFO L168 Benchmark]: CACSL2BoogieTranslator took 342.56 ms. Allocated memory is still 1.0 GB. Free memory was 951.3 MB in the beginning and 940.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-28 18:05:06,826 INFO L168 Benchmark]: Boogie Procedure Inliner took 28.55 ms. Allocated memory is still 1.0 GB. Free memory is still 940.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 18:05:06,826 INFO L168 Benchmark]: Boogie Preprocessor took 34.93 ms. Allocated memory is still 1.0 GB. Free memory was 940.6 MB in the beginning and 935.2 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-11-28 18:05:06,827 INFO L168 Benchmark]: RCFGBuilder took 686.93 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 133.7 MB). Free memory was 935.2 MB in the beginning and 1.1 GB in the end (delta: -166.2 MB). Peak memory consumption was 13.7 MB. Max. memory is 11.5 GB. [2018-11-28 18:05:06,828 INFO L168 Benchmark]: TraceAbstraction took 1170.04 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 40.5 MB). Peak memory consumption was 40.5 MB. Max. memory is 11.5 GB. [2018-11-28 18:05:06,829 INFO L168 Benchmark]: Witness Printer took 5.09 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 18:05:06,835 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 342.56 ms. Allocated memory is still 1.0 GB. Free memory was 951.3 MB in the beginning and 940.6 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 28.55 ms. Allocated memory is still 1.0 GB. Free memory is still 940.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 34.93 ms. Allocated memory is still 1.0 GB. Free memory was 940.6 MB in the beginning and 935.2 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 686.93 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 133.7 MB). Free memory was 935.2 MB in the beginning and 1.1 GB in the end (delta: -166.2 MB). Peak memory consumption was 13.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1170.04 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 40.5 MB). Peak memory consumption was 40.5 MB. Max. memory is 11.5 GB. * Witness Printer took 5.09 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: 85]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 84, overapproximation of someUnaryDOUBLEoperation at line 80. Possible FailurePath: [L79] double x = 0.0; [L80] double y = -0.0; VAL [x=0] [L81] CALL, EXPR fmax_double(x, y) VAL [\old(x)=0, \old(y)=4293918726] [L52] CALL, EXPR __fpclassify_double(x) VAL [\old(x)=0] [L24] __uint32_t msw, lsw; VAL [\old(x)=0, x=0] [L27] ieee_double_shape_type ew_u; [L28] ew_u.value = (x) [L29] EXPR ew_u.parts.msw [L29] (msw) = ew_u.parts.msw [L30] EXPR ew_u.parts.lsw [L30] (lsw) = ew_u.parts.lsw [L33-L34] COND FALSE !((msw == 0x00000000 && lsw == 0x00000000) || (msw == 0x80000000 && lsw == 0x00000000)) VAL [\old(x)=0, lsw=1, msw=4293918721, x=0] [L36-L37] COND FALSE !((msw >= 0x00100000 && msw <= 0x7fefffff) || (msw >= 0x80100000 && msw <= 0xffefffff)) VAL [\old(x)=0, lsw=1, msw=4293918721, x=0] [L39-L40] COND FALSE !(( msw <= 0x000fffff) || (msw >= 0x80000000 && msw <= 0x800fffff)) VAL [\old(x)=0, lsw=1, msw=4293918721, x=0] [L43-L44] COND FALSE !((msw == 0x7ff00000 && lsw == 0x00000000) || (msw == 0xfff00000 && lsw == 0x00000000)) [L47] return 0; VAL [\old(x)=0, \result=0, lsw=1, msw=4293918721, x=0] [L52] RET, EXPR __fpclassify_double(x) VAL [\old(x)=0, \old(y)=4293918726, __fpclassify_double(x)=0, x=0, y=4293918726] [L52] COND TRUE __fpclassify_double(x) == 0 [L53] return y; VAL [\old(x)=0, \old(y)=4293918726, \result=4293918726, x=0, y=4293918726] [L81] RET, EXPR fmax_double(x, y) VAL [fmax_double(x, y)=4293918726, x=0, y=4293918726] [L81] double res = fmax_double(x, y); [L84] EXPR res == 0.0 && __signbit_double(res) == 0 VAL [res=4293918726, res == 0.0 && __signbit_double(res) == 0=0, x=0, y=4293918726] [L84] COND TRUE !(res == 0.0 && __signbit_double(res) == 0) [L85] __VERIFIER_error() VAL [res=4293918726, x=0, y=4293918726] - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 44 locations, 1 error locations. UNSAFE Result, 1.0s OverallTime, 4 OverallIterations, 1 TraceHistogramMax, 0.3s 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, 0.1s 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 18:05:09,364 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-28 18:05:09,366 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-28 18:05:09,379 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-28 18:05:09,380 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-28 18:05:09,381 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-28 18:05:09,382 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-28 18:05:09,384 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-28 18:05:09,387 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-28 18:05:09,388 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-28 18:05:09,389 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-28 18:05:09,389 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-28 18:05:09,390 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-28 18:05:09,392 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-28 18:05:09,393 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-28 18:05:09,394 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-28 18:05:09,395 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-28 18:05:09,397 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-28 18:05:09,400 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-28 18:05:09,402 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-28 18:05:09,403 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-28 18:05:09,404 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-28 18:05:09,407 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-28 18:05:09,407 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-28 18:05:09,408 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-28 18:05:09,409 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-28 18:05:09,410 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-28 18:05:09,411 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-28 18:05:09,412 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-28 18:05:09,414 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-28 18:05:09,414 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-28 18:05:09,415 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-28 18:05:09,415 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-28 18:05:09,416 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-28 18:05:09,417 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-28 18:05:09,418 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-28 18:05:09,418 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2018-11-28 18:05:09,434 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-28 18:05:09,435 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-28 18:05:09,436 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-28 18:05:09,436 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-11-28 18:05:09,436 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-28 18:05:09,437 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-28 18:05:09,437 INFO L133 SettingsManager]: * Use SBE=true [2018-11-28 18:05:09,438 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-28 18:05:09,438 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-28 18:05:09,438 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-28 18:05:09,438 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-28 18:05:09,438 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-28 18:05:09,439 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-28 18:05:09,439 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-28 18:05:09,440 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-11-28 18:05:09,440 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-11-28 18:05:09,440 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-28 18:05:09,440 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-28 18:05:09,441 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-28 18:05:09,441 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-28 18:05:09,441 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-28 18:05:09,441 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-28 18:05:09,441 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-28 18:05:09,442 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-28 18:05:09,442 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-28 18:05:09,442 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-28 18:05:09,442 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-28 18:05:09,442 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-28 18:05:09,442 INFO L133 SettingsManager]: * Trace refinement strategy=WOLF [2018-11-28 18:05:09,444 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-28 18:05:09,445 INFO L133 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2018-11-28 18:05:09,445 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-11-28 18:05:09,445 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 -> 6f57b560c2271100a3cc213cf38aa06905e4b86e [2018-11-28 18:05:09,496 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-28 18:05:09,515 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-28 18:05:09,521 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-28 18:05:09,523 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-28 18:05:09,525 INFO L276 PluginConnector]: CDTParser initialized [2018-11-28 18:05:09,525 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/float-newlib/double_req_bl_1252b_false-unreach-call.c [2018-11-28 18:05:09,596 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f0a00b57e/9aa3fa2b2f474533bc2c2a3f0f5e70db/FLAG066b535ab [2018-11-28 18:05:10,034 INFO L307 CDTParser]: Found 1 translation units. [2018-11-28 18:05:10,034 INFO L161 CDTParser]: Scanning /storage/repos/svcomp/c/float-newlib/double_req_bl_1252b_false-unreach-call.c [2018-11-28 18:05:10,043 INFO L355 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f0a00b57e/9aa3fa2b2f474533bc2c2a3f0f5e70db/FLAG066b535ab [2018-11-28 18:05:10,406 INFO L363 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f0a00b57e/9aa3fa2b2f474533bc2c2a3f0f5e70db [2018-11-28 18:05:10,410 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-28 18:05:10,412 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-28 18:05:10,414 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-28 18:05:10,414 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-28 18:05:10,418 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-28 18:05:10,419 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 06:05:10" (1/1) ... [2018-11-28 18:05:10,426 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41a15a8c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:05:10, skipping insertion in model container [2018-11-28 18:05:10,426 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 06:05:10" (1/1) ... [2018-11-28 18:05:10,435 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-28 18:05:10,463 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-28 18:05:10,694 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 18:05:10,714 INFO L191 MainTranslator]: Completed pre-run [2018-11-28 18:05:10,768 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 18:05:10,814 INFO L195 MainTranslator]: Completed translation [2018-11-28 18:05:10,815 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:05:10 WrapperNode [2018-11-28 18:05:10,815 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-28 18:05:10,816 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-28 18:05:10,817 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-28 18:05:10,817 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-28 18:05:10,828 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:05:10" (1/1) ... [2018-11-28 18:05:10,842 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:05:10" (1/1) ... [2018-11-28 18:05:10,852 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-28 18:05:10,852 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-28 18:05:10,852 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-28 18:05:10,852 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-28 18:05:10,866 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:05:10" (1/1) ... [2018-11-28 18:05:10,866 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:05:10" (1/1) ... [2018-11-28 18:05:10,877 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:05:10" (1/1) ... [2018-11-28 18:05:10,879 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:05:10" (1/1) ... [2018-11-28 18:05:10,906 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:05:10" (1/1) ... [2018-11-28 18:05:11,014 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:05:10" (1/1) ... [2018-11-28 18:05:11,020 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:05:10" (1/1) ... [2018-11-28 18:05:11,030 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-28 18:05:11,031 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-28 18:05:11,031 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-28 18:05:11,031 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-28 18:05:11,033 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:05:10" (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 18:05:11,100 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2018-11-28 18:05:11,100 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_double [2018-11-28 18:05:11,100 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_double [2018-11-28 18:05:11,100 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-28 18:05:11,100 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-28 18:05:11,100 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_double [2018-11-28 18:05:11,101 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_double [2018-11-28 18:05:11,101 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-28 18:05:11,101 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-28 18:05:11,101 INFO L130 BoogieDeclarations]: Found specification of procedure fmax_double [2018-11-28 18:05:11,101 INFO L138 BoogieDeclarations]: Found implementation of procedure fmax_double [2018-11-28 18:05:11,101 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-28 18:05:11,101 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2018-11-28 18:05:11,102 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-28 18:05:11,102 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-28 18:05:11,103 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-28 18:05:11,321 WARN L317 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-28 18:05:11,676 WARN L317 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-28 18:05:11,754 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-28 18:05:11,754 INFO L280 CfgBuilder]: Removed 4 assue(true) statements. [2018-11-28 18:05:11,754 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 06:05:11 BoogieIcfgContainer [2018-11-28 18:05:11,755 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-28 18:05:11,755 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-28 18:05:11,756 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-28 18:05:11,760 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-28 18:05:11,760 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 06:05:10" (1/3) ... [2018-11-28 18:05:11,761 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5773ac38 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 06:05:11, skipping insertion in model container [2018-11-28 18:05:11,761 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:05:10" (2/3) ... [2018-11-28 18:05:11,762 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5773ac38 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 06:05:11, skipping insertion in model container [2018-11-28 18:05:11,762 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 06:05:11" (3/3) ... [2018-11-28 18:05:11,765 INFO L112 eAbstractionObserver]: Analyzing ICFG double_req_bl_1252b_false-unreach-call.c [2018-11-28 18:05:11,775 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-28 18:05:11,783 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-28 18:05:11,800 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-28 18:05:11,833 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-28 18:05:11,834 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-28 18:05:11,834 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-28 18:05:11,834 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-28 18:05:11,834 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-28 18:05:11,834 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-28 18:05:11,835 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-28 18:05:11,835 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-28 18:05:11,835 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-28 18:05:11,852 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states. [2018-11-28 18:05:11,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-11-28 18:05:11,858 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 18:05:11,859 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 18:05:11,862 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 18:05:11,867 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 18:05:11,867 INFO L82 PathProgramCache]: Analyzing trace with hash 1896135752, now seen corresponding path program 1 times [2018-11-28 18:05:11,872 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-28 18:05:11,872 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 18:05:11,879 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 18:05:11,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 18:05:11,969 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 18:05:11,989 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 18:05:11,990 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-28 18:05:12,008 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 18:05:12,009 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-28 18:05:12,014 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-28 18:05:12,030 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-28 18:05:12,030 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-28 18:05:12,034 INFO L87 Difference]: Start difference. First operand 42 states. Second operand 2 states. [2018-11-28 18:05:12,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 18:05:12,063 INFO L93 Difference]: Finished difference Result 75 states and 103 transitions. [2018-11-28 18:05:12,063 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-28 18:05:12,065 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 21 [2018-11-28 18:05:12,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 18:05:12,076 INFO L225 Difference]: With dead ends: 75 [2018-11-28 18:05:12,077 INFO L226 Difference]: Without dead ends: 38 [2018-11-28 18:05:12,081 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 18:05:12,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2018-11-28 18:05:12,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2018-11-28 18:05:12,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2018-11-28 18:05:12,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 46 transitions. [2018-11-28 18:05:12,127 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 46 transitions. Word has length 21 [2018-11-28 18:05:12,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 18:05:12,128 INFO L480 AbstractCegarLoop]: Abstraction has 38 states and 46 transitions. [2018-11-28 18:05:12,128 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-28 18:05:12,128 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 46 transitions. [2018-11-28 18:05:12,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-11-28 18:05:12,131 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 18:05:12,131 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 18:05:12,132 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 18:05:12,132 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 18:05:12,132 INFO L82 PathProgramCache]: Analyzing trace with hash -944725945, now seen corresponding path program 1 times [2018-11-28 18:05:12,133 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-28 18:05:12,133 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) [2018-11-28 18:05:12,141 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2018-11-28 18:05:12,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 18:05:12,221 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 18:05:12,321 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 18:05:12,321 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-28 18:05:12,338 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 18:05:12,339 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-28 18:05:12,340 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-28 18:05:12,340 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-28 18:05:12,341 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-28 18:05:12,341 INFO L87 Difference]: Start difference. First operand 38 states and 46 transitions. Second operand 4 states. [2018-11-28 18:05:12,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 18:05:12,412 INFO L93 Difference]: Finished difference Result 56 states and 66 transitions. [2018-11-28 18:05:12,413 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-28 18:05:12,413 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 22 [2018-11-28 18:05:12,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 18:05:12,416 INFO L225 Difference]: With dead ends: 56 [2018-11-28 18:05:12,416 INFO L226 Difference]: Without dead ends: 41 [2018-11-28 18:05:12,417 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 18:05:12,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2018-11-28 18:05:12,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2018-11-28 18:05:12,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-11-28 18:05:12,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 50 transitions. [2018-11-28 18:05:12,428 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 50 transitions. Word has length 22 [2018-11-28 18:05:12,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 18:05:12,429 INFO L480 AbstractCegarLoop]: Abstraction has 41 states and 50 transitions. [2018-11-28 18:05:12,430 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-28 18:05:12,430 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 50 transitions. [2018-11-28 18:05:12,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-11-28 18:05:12,431 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 18:05:12,431 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 18:05:12,431 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 18:05:12,433 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 18:05:12,433 INFO L82 PathProgramCache]: Analyzing trace with hash -190309307, now seen corresponding path program 1 times [2018-11-28 18:05:12,434 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-28 18:05:12,434 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 18:05:12,449 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 18:05:12,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 18:05:12,532 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 18:05:13,125 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 18:05:13,125 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-28 18:05:13,143 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 18:05:13,143 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-11-28 18:05:13,144 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-28 18:05:13,144 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-28 18:05:13,144 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-11-28 18:05:13,145 INFO L87 Difference]: Start difference. First operand 41 states and 50 transitions. Second operand 8 states. [2018-11-28 18:05:14,417 WARN L180 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 35 [2018-11-28 18:05:14,765 WARN L180 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 31 [2018-11-28 18:05:15,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 18:05:15,189 INFO L93 Difference]: Finished difference Result 63 states and 79 transitions. [2018-11-28 18:05:15,192 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-28 18:05:15,192 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 23 [2018-11-28 18:05:15,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 18:05:15,194 INFO L225 Difference]: With dead ends: 63 [2018-11-28 18:05:15,194 INFO L226 Difference]: Without dead ends: 43 [2018-11-28 18:05:15,195 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2018-11-28 18:05:15,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2018-11-28 18:05:15,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2018-11-28 18:05:15,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2018-11-28 18:05:15,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 52 transitions. [2018-11-28 18:05:15,206 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 52 transitions. Word has length 23 [2018-11-28 18:05:15,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 18:05:15,206 INFO L480 AbstractCegarLoop]: Abstraction has 43 states and 52 transitions. [2018-11-28 18:05:15,206 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-28 18:05:15,207 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 52 transitions. [2018-11-28 18:05:15,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-11-28 18:05:15,209 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 18:05:15,209 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] [2018-11-28 18:05:15,209 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 18:05:15,210 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 18:05:15,210 INFO L82 PathProgramCache]: Analyzing trace with hash 935715971, now seen corresponding path program 1 times [2018-11-28 18:05:15,210 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-28 18:05:15,210 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 18:05:15,223 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 18:05:15,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 18:05:15,298 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 18:05:15,318 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 18:05:15,318 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-28 18:05:15,333 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 18:05:15,333 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-28 18:05:15,333 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-28 18:05:15,334 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-28 18:05:15,334 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-28 18:05:15,334 INFO L87 Difference]: Start difference. First operand 43 states and 52 transitions. Second operand 4 states. [2018-11-28 18:05:15,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 18:05:15,418 INFO L93 Difference]: Finished difference Result 61 states and 72 transitions. [2018-11-28 18:05:15,422 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-28 18:05:15,422 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 24 [2018-11-28 18:05:15,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 18:05:15,426 INFO L225 Difference]: With dead ends: 61 [2018-11-28 18:05:15,428 INFO L226 Difference]: Without dead ends: 46 [2018-11-28 18:05:15,428 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 21 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 18:05:15,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2018-11-28 18:05:15,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 43. [2018-11-28 18:05:15,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2018-11-28 18:05:15,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 52 transitions. [2018-11-28 18:05:15,443 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 52 transitions. Word has length 24 [2018-11-28 18:05:15,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 18:05:15,444 INFO L480 AbstractCegarLoop]: Abstraction has 43 states and 52 transitions. [2018-11-28 18:05:15,444 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-28 18:05:15,444 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 52 transitions. [2018-11-28 18:05:15,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-11-28 18:05:15,447 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 18:05:15,447 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] [2018-11-28 18:05:15,447 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 18:05:15,448 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 18:05:15,448 INFO L82 PathProgramCache]: Analyzing trace with hash 696707201, now seen corresponding path program 1 times [2018-11-28 18:05:15,448 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-28 18:05:15,448 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 18:05:15,459 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 18:05:15,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 18:05:15,544 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 18:05:15,930 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 18:05:15,930 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-28 18:05:15,945 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 18:05:15,946 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-11-28 18:05:15,946 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-28 18:05:15,946 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-28 18:05:15,950 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-11-28 18:05:15,950 INFO L87 Difference]: Start difference. First operand 43 states and 52 transitions. Second operand 8 states. [2018-11-28 18:05:17,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 18:05:17,136 INFO L93 Difference]: Finished difference Result 62 states and 76 transitions. [2018-11-28 18:05:17,137 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-28 18:05:17,137 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 25 [2018-11-28 18:05:17,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 18:05:17,139 INFO L225 Difference]: With dead ends: 62 [2018-11-28 18:05:17,139 INFO L226 Difference]: Without dead ends: 42 [2018-11-28 18:05:17,140 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2018-11-28 18:05:17,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2018-11-28 18:05:17,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 40. [2018-11-28 18:05:17,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2018-11-28 18:05:17,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 47 transitions. [2018-11-28 18:05:17,147 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 47 transitions. Word has length 25 [2018-11-28 18:05:17,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 18:05:17,148 INFO L480 AbstractCegarLoop]: Abstraction has 40 states and 47 transitions. [2018-11-28 18:05:17,149 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-28 18:05:17,149 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 47 transitions. [2018-11-28 18:05:17,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-11-28 18:05:17,150 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 18:05:17,150 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 18:05:17,150 INFO L423 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 18:05:17,152 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 18:05:17,152 INFO L82 PathProgramCache]: Analyzing trace with hash -1230715632, now seen corresponding path program 1 times [2018-11-28 18:05:17,152 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-28 18:05:17,153 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 18:05:17,160 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 18:05:17,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 18:05:17,245 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 18:05:17,266 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 18:05:17,266 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-28 18:05:17,277 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 18:05:17,277 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-28 18:05:17,277 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-28 18:05:17,278 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-28 18:05:17,278 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-28 18:05:17,279 INFO L87 Difference]: Start difference. First operand 40 states and 47 transitions. Second operand 4 states. [2018-11-28 18:05:17,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 18:05:17,342 INFO L93 Difference]: Finished difference Result 58 states and 67 transitions. [2018-11-28 18:05:17,344 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-28 18:05:17,344 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 30 [2018-11-28 18:05:17,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 18:05:17,346 INFO L225 Difference]: With dead ends: 58 [2018-11-28 18:05:17,346 INFO L226 Difference]: Without dead ends: 43 [2018-11-28 18:05:17,347 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 18:05:17,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2018-11-28 18:05:17,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2018-11-28 18:05:17,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2018-11-28 18:05:17,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 51 transitions. [2018-11-28 18:05:17,355 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 51 transitions. Word has length 30 [2018-11-28 18:05:17,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 18:05:17,356 INFO L480 AbstractCegarLoop]: Abstraction has 43 states and 51 transitions. [2018-11-28 18:05:17,356 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-28 18:05:17,357 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 51 transitions. [2018-11-28 18:05:17,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-11-28 18:05:17,358 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 18:05:17,358 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 18:05:17,358 INFO L423 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 18:05:17,359 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 18:05:17,359 INFO L82 PathProgramCache]: Analyzing trace with hash -1937025982, now seen corresponding path program 1 times [2018-11-28 18:05:17,359 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-28 18:05:17,359 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 18:05:17,367 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 18:05:17,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 18:05:17,459 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 18:05:17,692 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 18:05:17,693 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-28 18:05:17,703 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 18:05:17,704 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-11-28 18:05:17,704 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-28 18:05:17,704 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-28 18:05:17,704 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-11-28 18:05:17,705 INFO L87 Difference]: Start difference. First operand 43 states and 51 transitions. Second operand 8 states. [2018-11-28 18:05:18,741 WARN L180 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 35 [2018-11-28 18:05:20,322 WARN L180 SmtUtils]: Spent 354.00 ms on a formula simplification that was a NOOP. DAG size: 31 [2018-11-28 18:05:20,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 18:05:20,378 INFO L93 Difference]: Finished difference Result 63 states and 73 transitions. [2018-11-28 18:05:20,380 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-28 18:05:20,381 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 31 [2018-11-28 18:05:20,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 18:05:20,382 INFO L225 Difference]: With dead ends: 63 [2018-11-28 18:05:20,382 INFO L226 Difference]: Without dead ends: 43 [2018-11-28 18:05:20,383 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2018-11-28 18:05:20,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2018-11-28 18:05:20,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2018-11-28 18:05:20,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2018-11-28 18:05:20,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 50 transitions. [2018-11-28 18:05:20,391 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 50 transitions. Word has length 31 [2018-11-28 18:05:20,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 18:05:20,392 INFO L480 AbstractCegarLoop]: Abstraction has 43 states and 50 transitions. [2018-11-28 18:05:20,392 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-28 18:05:20,392 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 50 transitions. [2018-11-28 18:05:20,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-11-28 18:05:20,394 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 18:05:20,394 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, 1] [2018-11-28 18:05:20,395 INFO L423 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 18:05:20,395 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 18:05:20,395 INFO L82 PathProgramCache]: Analyzing trace with hash 1151102924, now seen corresponding path program 1 times [2018-11-28 18:05:20,395 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-28 18:05:20,395 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 18:05:20,402 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 18:05:20,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 18:05:20,499 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 18:05:20,526 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 18:05:20,526 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-28 18:05:20,537 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 18:05:20,538 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-28 18:05:20,538 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-28 18:05:20,538 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-28 18:05:20,539 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-28 18:05:20,540 INFO L87 Difference]: Start difference. First operand 43 states and 50 transitions. Second operand 4 states. [2018-11-28 18:05:20,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 18:05:20,656 INFO L93 Difference]: Finished difference Result 59 states and 67 transitions. [2018-11-28 18:05:20,657 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-28 18:05:20,657 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 32 [2018-11-28 18:05:20,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 18:05:20,659 INFO L225 Difference]: With dead ends: 59 [2018-11-28 18:05:20,659 INFO L226 Difference]: Without dead ends: 44 [2018-11-28 18:05:20,660 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-28 18:05:20,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2018-11-28 18:05:20,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 41. [2018-11-28 18:05:20,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-11-28 18:05:20,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 47 transitions. [2018-11-28 18:05:20,668 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 47 transitions. Word has length 32 [2018-11-28 18:05:20,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 18:05:20,668 INFO L480 AbstractCegarLoop]: Abstraction has 41 states and 47 transitions. [2018-11-28 18:05:20,668 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-28 18:05:20,668 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 47 transitions. [2018-11-28 18:05:20,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-11-28 18:05:20,669 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 18:05:20,669 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 18:05:20,670 INFO L423 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 18:05:20,672 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 18:05:20,672 INFO L82 PathProgramCache]: Analyzing trace with hash 1413761077, now seen corresponding path program 1 times [2018-11-28 18:05:20,672 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-28 18:05:20,672 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 10 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with mathsat -unsat_core_generation=3 [2018-11-28 18:05:20,685 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 18:05:20,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 18:05:20,789 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 18:05:20,927 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 18:05:20,927 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-28 18:05:20,943 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 18:05:20,943 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-28 18:05:20,943 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-28 18:05:20,944 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-28 18:05:20,945 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-28 18:05:20,945 INFO L87 Difference]: Start difference. First operand 41 states and 47 transitions. Second operand 5 states. [2018-11-28 18:05:21,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 18:05:21,169 INFO L93 Difference]: Finished difference Result 57 states and 63 transitions. [2018-11-28 18:05:21,171 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-28 18:05:21,171 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 32 [2018-11-28 18:05:21,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 18:05:21,172 INFO L225 Difference]: With dead ends: 57 [2018-11-28 18:05:21,172 INFO L226 Difference]: Without dead ends: 41 [2018-11-28 18:05:21,174 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 18:05:21,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2018-11-28 18:05:21,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2018-11-28 18:05:21,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-11-28 18:05:21,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 46 transitions. [2018-11-28 18:05:21,181 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 46 transitions. Word has length 32 [2018-11-28 18:05:21,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 18:05:21,182 INFO L480 AbstractCegarLoop]: Abstraction has 41 states and 46 transitions. [2018-11-28 18:05:21,182 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-28 18:05:21,182 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 46 transitions. [2018-11-28 18:05:21,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-11-28 18:05:21,183 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 18:05:21,183 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 18:05:21,183 INFO L423 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 18:05:21,184 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 18:05:21,186 INFO L82 PathProgramCache]: Analyzing trace with hash 604414451, now seen corresponding path program 1 times [2018-11-28 18:05:21,186 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-28 18:05:21,186 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 11 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with mathsat -unsat_core_generation=3 [2018-11-28 18:05:21,199 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 18:05:21,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 18:05:21,307 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 18:05:21,421 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 18:05:21,421 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-28 18:05:21,433 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 18:05:21,433 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-11-28 18:05:21,434 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-28 18:05:21,434 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-28 18:05:21,434 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-11-28 18:05:21,434 INFO L87 Difference]: Start difference. First operand 41 states and 46 transitions. Second operand 8 states. [2018-11-28 18:05:21,869 WARN L180 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 6 [2018-11-28 18:05:22,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 18:05:22,120 INFO L93 Difference]: Finished difference Result 48 states and 53 transitions. [2018-11-28 18:05:22,122 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-28 18:05:22,122 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 32 [2018-11-28 18:05:22,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 18:05:22,123 INFO L225 Difference]: With dead ends: 48 [2018-11-28 18:05:22,124 INFO L226 Difference]: Without dead ends: 45 [2018-11-28 18:05:22,124 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2018-11-28 18:05:22,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2018-11-28 18:05:22,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2018-11-28 18:05:22,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2018-11-28 18:05:22,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 50 transitions. [2018-11-28 18:05:22,132 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 50 transitions. Word has length 32 [2018-11-28 18:05:22,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 18:05:22,132 INFO L480 AbstractCegarLoop]: Abstraction has 45 states and 50 transitions. [2018-11-28 18:05:22,133 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-28 18:05:22,134 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 50 transitions. [2018-11-28 18:05:22,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2018-11-28 18:05:22,135 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 18:05:22,136 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, 1, 1] [2018-11-28 18:05:22,136 INFO L423 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 18:05:22,136 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 18:05:22,136 INFO L82 PathProgramCache]: Analyzing trace with hash 1607764478, now seen corresponding path program 1 times [2018-11-28 18:05:22,136 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-28 18:05:22,137 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 12 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with mathsat -unsat_core_generation=3 [2018-11-28 18:05:22,145 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 18:05:22,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 18:05:22,243 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 18:05:22,686 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-11-28 18:05:22,687 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-28 18:05:22,704 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 18:05:22,705 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-11-28 18:05:22,705 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-28 18:05:22,705 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-28 18:05:22,705 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-11-28 18:05:22,706 INFO L87 Difference]: Start difference. First operand 45 states and 50 transitions. Second operand 8 states. [2018-11-28 18:05:24,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 18:05:24,011 INFO L93 Difference]: Finished difference Result 62 states and 66 transitions. [2018-11-28 18:05:24,012 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-28 18:05:24,012 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 33 [2018-11-28 18:05:24,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 18:05:24,013 INFO L225 Difference]: With dead ends: 62 [2018-11-28 18:05:24,013 INFO L226 Difference]: Without dead ends: 37 [2018-11-28 18:05:24,014 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2018-11-28 18:05:24,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2018-11-28 18:05:24,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2018-11-28 18:05:24,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2018-11-28 18:05:24,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 38 transitions. [2018-11-28 18:05:24,021 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 38 transitions. Word has length 33 [2018-11-28 18:05:24,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 18:05:24,022 INFO L480 AbstractCegarLoop]: Abstraction has 37 states and 38 transitions. [2018-11-28 18:05:24,022 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-28 18:05:24,022 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 38 transitions. [2018-11-28 18:05:24,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2018-11-28 18:05:24,023 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 18:05:24,023 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 18:05:24,023 INFO L423 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 18:05:24,025 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 18:05:24,026 INFO L82 PathProgramCache]: Analyzing trace with hash -329247760, now seen corresponding path program 1 times [2018-11-28 18:05:24,026 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-28 18:05:24,026 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 13 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with mathsat -unsat_core_generation=3 [2018-11-28 18:05:24,031 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 18:05:24,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 18:05:24,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 18:05:24,410 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2018-11-28 18:05:24,476 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 06:05:24 BoogieIcfgContainer [2018-11-28 18:05:24,477 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-28 18:05:24,477 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-28 18:05:24,478 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-28 18:05:24,478 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-28 18:05:24,478 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 06:05:11" (3/4) ... [2018-11-28 18:05:24,484 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2018-11-28 18:05:24,596 INFO L145 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2018-11-28 18:05:24,596 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-28 18:05:24,598 INFO L168 Benchmark]: Toolchain (without parser) took 14186.86 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 186.6 MB). Free memory was 952.7 MB in the beginning and 1.1 GB in the end (delta: -171.3 MB). Peak memory consumption was 15.4 MB. Max. memory is 11.5 GB. [2018-11-28 18:05:24,602 INFO L168 Benchmark]: CDTParser took 0.34 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 18:05:24,603 INFO L168 Benchmark]: CACSL2BoogieTranslator took 401.57 ms. Allocated memory is still 1.0 GB. Free memory was 952.7 MB in the beginning and 941.9 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-28 18:05:24,603 INFO L168 Benchmark]: Boogie Procedure Inliner took 35.49 ms. Allocated memory is still 1.0 GB. Free memory was 941.9 MB in the beginning and 936.6 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-11-28 18:05:24,604 INFO L168 Benchmark]: Boogie Preprocessor took 178.30 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 121.1 MB). Free memory was 936.6 MB in the beginning and 1.1 GB in the end (delta: -172.2 MB). Peak memory consumption was 13.6 MB. Max. memory is 11.5 GB. [2018-11-28 18:05:24,611 INFO L168 Benchmark]: RCFGBuilder took 723.84 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: 21.2 MB). Peak memory consumption was 21.2 MB. Max. memory is 11.5 GB. [2018-11-28 18:05:24,612 INFO L168 Benchmark]: TraceAbstraction took 12721.36 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 65.5 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: -36.3 MB). Peak memory consumption was 29.2 MB. Max. memory is 11.5 GB. [2018-11-28 18:05:24,613 INFO L168 Benchmark]: Witness Printer took 118.67 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: 24 B). Peak memory consumption was 24 B. Max. memory is 11.5 GB. [2018-11-28 18:05:24,629 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34 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 401.57 ms. Allocated memory is still 1.0 GB. Free memory was 952.7 MB in the beginning and 941.9 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 35.49 ms. Allocated memory is still 1.0 GB. Free memory was 941.9 MB in the beginning and 936.6 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 178.30 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 121.1 MB). Free memory was 936.6 MB in the beginning and 1.1 GB in the end (delta: -172.2 MB). Peak memory consumption was 13.6 MB. Max. memory is 11.5 GB. * RCFGBuilder took 723.84 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: 21.2 MB). Peak memory consumption was 21.2 MB. Max. memory is 11.5 GB. * TraceAbstraction took 12721.36 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 65.5 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: -36.3 MB). Peak memory consumption was 29.2 MB. Max. memory is 11.5 GB. * Witness Printer took 118.67 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: 24 B). Peak memory consumption was 24 B. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 85]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L79] double x = 0.0; [L80] double y = -0.0; VAL [x=0.0, y=0.0] [L81] CALL, EXPR fmax_double(x, y) VAL [\old(x)=0.0, \old(y)=0.0] [L52] CALL, EXPR __fpclassify_double(x) VAL [\old(x)=0.0] [L24] __uint32_t msw, lsw; VAL [\old(x)=0.0, x=0.0] [L27] ieee_double_shape_type ew_u; [L28] ew_u.value = (x) [L29] EXPR ew_u.parts.msw [L29] (msw) = ew_u.parts.msw [L30] EXPR ew_u.parts.lsw [L30] (lsw) = ew_u.parts.lsw [L33-L34] COND TRUE (msw == 0x00000000 && lsw == 0x00000000) || (msw == 0x80000000 && lsw == 0x00000000) [L35] return 2; VAL [\old(x)=0.0, \result=2, lsw=0, msw=0, x=0.0] [L52] RET, EXPR __fpclassify_double(x) VAL [\old(x)=0.0, \old(y)=0.0, __fpclassify_double(x)=2, x=0.0, y=0.0] [L52] COND FALSE !(__fpclassify_double(x) == 0) [L54] CALL, EXPR __fpclassify_double(y) VAL [\old(x)=0.0] [L24] __uint32_t msw, lsw; VAL [\old(x)=0.0, x=0.0] [L27] ieee_double_shape_type ew_u; [L28] ew_u.value = (x) [L29] EXPR ew_u.parts.msw [L29] (msw) = ew_u.parts.msw [L30] EXPR ew_u.parts.lsw [L30] (lsw) = ew_u.parts.lsw [L33-L34] COND TRUE (msw == 0x00000000 && lsw == 0x00000000) || (msw == 0x80000000 && lsw == 0x00000000) [L35] return 2; VAL [\old(x)=0.0, \result=2, lsw=0, msw=-2147483648, x=0.0] [L54] RET, EXPR __fpclassify_double(y) VAL [\old(x)=0.0, \old(y)=0.0, __fpclassify_double(y)=2, x=0.0, y=0.0] [L54] COND FALSE !(__fpclassify_double(y) == 0) [L57] 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] [L57] return x > y ? x : y; [L81] RET, EXPR fmax_double(x, y) VAL [fmax_double(x, y)=0.0, x=0.0, y=0.0] [L81] double res = fmax_double(x, y); [L84] EXPR res == 0.0 && __signbit_double(res) == 0 VAL [res=0.0, res == 0.0 && __signbit_double(res) == 0=1, x=0.0, y=0.0] [L84] CALL, EXPR __signbit_double(res) VAL [\old(x)=0.0] [L61] __uint32_t msw; VAL [\old(x)=0.0, x=0.0] [L64] ieee_double_shape_type gh_u; [L65] gh_u.value = (x) [L66] EXPR gh_u.parts.msw [L66] (msw) = gh_u.parts.msw [L69] return (msw & 0x80000000) != 0; VAL [\old(x)=0.0, \result=1, msw=2147483648, x=0.0] [L84] RET, EXPR __signbit_double(res) VAL [__signbit_double(res)=1, res=0.0, res == 0.0 && __signbit_double(res) == 0=1, x=0.0, y=0.0] [L84] EXPR res == 0.0 && __signbit_double(res) == 0 VAL [__signbit_double(res)=1, res=0.0, res == 0.0 && __signbit_double(res) == 0=0, x=0.0, y=0.0] [L84] COND TRUE !(res == 0.0 && __signbit_double(res) == 0) [L85] __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, 12.6s OverallTime, 12 OverallIterations, 2 TraceHistogramMax, 8.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 452 SDtfs, 177 SDslu, 1317 SDs, 0 SdLazy, 513 SolverSat, 11 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 6.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 315 GetRequests, 256 SyntacticMatches, 1 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 3.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=45occurred in iteration=10, 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: 0.1s AutomataMinimizationTime, 11 MinimizatonAttempts, 8 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 2.2s InterpolantComputationTime, 345 NumberOfCodeBlocks, 345 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 294 ConstructedInterpolants, 36 QuantifiedInterpolants, 35757 SizeOfPredicates, 23 NumberOfNonLiveVariables, 957 ConjunctsInSsa, 65 ConjunctsInUnsatCore, 11 InterpolantComputations, 11 PerfectInterpolantSequences, 36/36 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...