/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/Ultimate.py --spec ../../../trunk/examples/svcomp/ReachSafety.prp --file ../../../trunk/examples/svcomp/float-newlib/float_req_bl_1051_true-unreach-call.c --full-output --architecture 32bit --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5eb3fea6 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 ../../../trunk/examples/svcomp/float-newlib/float_req_bl_1051_true-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 863e70131520c7e8858a4f32bea4c5cffd3e6ae2 --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false ................................................................................................................................................................................................................................................................................................... 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 ../../../trunk/examples/svcomp/float-newlib/float_req_bl_1051_true-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 863e70131520c7e8858a4f32bea4c5cffd3e6ae2 --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false ............................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-5eb3fea [2018-09-21 18:38:08,454 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-21 18:38:08,459 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-21 18:38:08,476 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-21 18:38:08,477 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-21 18:38:08,478 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-21 18:38:08,479 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-21 18:38:08,481 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-21 18:38:08,483 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-21 18:38:08,483 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-21 18:38:08,484 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-21 18:38:08,485 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-21 18:38:08,485 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-21 18:38:08,486 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-21 18:38:08,488 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-21 18:38:08,488 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-21 18:38:08,489 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-21 18:38:08,491 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-21 18:38:08,493 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-21 18:38:08,495 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-21 18:38:08,496 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-21 18:38:08,497 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-21 18:38:08,500 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-21 18:38:08,500 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-21 18:38:08,500 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-21 18:38:08,501 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-21 18:38:08,502 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-21 18:38:08,503 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-21 18:38:08,504 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-21 18:38:08,505 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-21 18:38:08,508 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-21 18:38:08,510 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-21 18:38:08,510 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-21 18:38:08,510 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-21 18:38:08,511 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-21 18:38:08,514 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-21 18:38:08,515 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-09-21 18:38:08,538 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-21 18:38:08,538 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-21 18:38:08,539 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-21 18:38:08,540 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-09-21 18:38:08,540 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-09-21 18:38:08,540 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-09-21 18:38:08,541 INFO L133 SettingsManager]: * Use SBE=true [2018-09-21 18:38:08,541 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-21 18:38:08,541 INFO L133 SettingsManager]: * sizeof long=4 [2018-09-21 18:38:08,541 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-21 18:38:08,541 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-09-21 18:38:08,541 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-21 18:38:08,542 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-21 18:38:08,542 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-21 18:38:08,542 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-21 18:38:08,542 INFO L133 SettingsManager]: * sizeof long double=12 [2018-09-21 18:38:08,542 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-21 18:38:08,543 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-21 18:38:08,543 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-21 18:38:08,543 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-21 18:38:08,543 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-21 18:38:08,543 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-21 18:38:08,544 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-21 18:38:08,544 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-21 18:38:08,544 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-21 18:38:08,544 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-21 18:38:08,544 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-09-21 18:38:08,544 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-21 18:38:08,545 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-21 18:38:08,545 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 -> 863e70131520c7e8858a4f32bea4c5cffd3e6ae2 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false [2018-09-21 18:38:08,619 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-21 18:38:08,632 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-21 18:38:08,636 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-21 18:38:08,637 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-21 18:38:08,638 INFO L276 PluginConnector]: CDTParser initialized [2018-09-21 18:38:08,639 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1051_true-unreach-call.c [2018-09-21 18:38:09,041 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d77812c9b/c77c56d557014b2eabf07dce26325245/FLAGfe0a16677 [2018-09-21 18:38:09,189 INFO L277 CDTParser]: Found 1 translation units. [2018-09-21 18:38:09,190 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/float_req_bl_1051_true-unreach-call.c [2018-09-21 18:38:09,197 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d77812c9b/c77c56d557014b2eabf07dce26325245/FLAGfe0a16677 [2018-09-21 18:38:09,215 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d77812c9b/c77c56d557014b2eabf07dce26325245 [2018-09-21 18:38:09,220 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-21 18:38:09,223 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-21 18:38:09,224 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-21 18:38:09,224 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-21 18:38:09,233 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-21 18:38:09,234 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 06:38:09" (1/1) ... [2018-09-21 18:38:09,238 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@24141980 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:38:09, skipping insertion in model container [2018-09-21 18:38:09,239 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 06:38:09" (1/1) ... [2018-09-21 18:38:09,253 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-21 18:38:09,542 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-21 18:38:09,561 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-21 18:38:09,577 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-21 18:38:09,604 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:38:09 WrapperNode [2018-09-21 18:38:09,604 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-21 18:38:09,605 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-21 18:38:09,605 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-21 18:38:09,605 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-21 18:38:09,623 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:38:09" (1/1) ... [2018-09-21 18:38:09,623 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:38:09" (1/1) ... [2018-09-21 18:38:09,635 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:38:09" (1/1) ... [2018-09-21 18:38:09,635 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:38:09" (1/1) ... [2018-09-21 18:38:09,642 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:38:09" (1/1) ... [2018-09-21 18:38:09,648 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:38:09" (1/1) ... [2018-09-21 18:38:09,650 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:38:09" (1/1) ... [2018-09-21 18:38:09,654 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-21 18:38:09,655 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-21 18:38:09,655 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-21 18:38:09,655 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-21 18:38:09,658 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:38:09" (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 [2018-09-21 18:38:09,718 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-21 18:38:09,719 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-21 18:38:09,719 INFO L138 BoogieDeclarations]: Found implementation of procedure floor_float [2018-09-21 18:38:09,719 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_float [2018-09-21 18:38:09,719 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-21 18:38:09,719 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-09-21 18:38:09,719 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2018-09-21 18:38:09,719 INFO L130 BoogieDeclarations]: Found specification of procedure floor_float [2018-09-21 18:38:09,720 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-09-21 18:38:09,720 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2018-09-21 18:38:09,720 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-09-21 18:38:09,720 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-09-21 18:38:09,720 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-09-21 18:38:09,720 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2018-09-21 18:38:09,720 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_float [2018-09-21 18:38:09,721 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-21 18:38:09,721 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-21 18:38:09,721 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-21 18:38:09,721 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2018-09-21 18:38:09,721 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~real [2018-09-21 18:38:10,365 INFO L373 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-21 18:38:10,366 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 06:38:10 BoogieIcfgContainer [2018-09-21 18:38:10,366 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-21 18:38:10,367 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-21 18:38:10,367 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-21 18:38:10,370 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-21 18:38:10,371 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 06:38:09" (1/3) ... [2018-09-21 18:38:10,372 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4cdeb39e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 06:38:10, skipping insertion in model container [2018-09-21 18:38:10,372 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:38:09" (2/3) ... [2018-09-21 18:38:10,372 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4cdeb39e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 06:38:10, skipping insertion in model container [2018-09-21 18:38:10,372 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 06:38:10" (3/3) ... [2018-09-21 18:38:10,374 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_1051_true-unreach-call.c [2018-09-21 18:38:10,385 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-21 18:38:10,395 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-21 18:38:10,444 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-21 18:38:10,445 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-21 18:38:10,446 INFO L382 AbstractCegarLoop]: Hoare is false [2018-09-21 18:38:10,446 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-21 18:38:10,446 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-21 18:38:10,446 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-21 18:38:10,447 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-21 18:38:10,447 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-21 18:38:10,447 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-21 18:38:10,470 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states. [2018-09-21 18:38:10,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-09-21 18:38:10,501 INFO L368 BasicCegarLoop]: Found error trace [2018-09-21 18:38:10,502 INFO L376 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] [2018-09-21 18:38:10,505 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-21 18:38:10,514 INFO L82 PathProgramCache]: Analyzing trace with hash 1872792536, now seen corresponding path program 1 times [2018-09-21 18:38:10,517 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-21 18:38:10,518 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-21 18:38:10,584 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-21 18:38:10,584 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-21 18:38:10,584 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-21 18:38:10,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-21 18:38:10,724 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-21 18:38:10,729 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-21 18:38:10,730 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-09-21 18:38:10,734 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-09-21 18:38:10,747 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-09-21 18:38:10,748 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-09-21 18:38:10,750 INFO L87 Difference]: Start difference. First operand 55 states. Second operand 2 states. [2018-09-21 18:38:10,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-21 18:38:10,771 INFO L93 Difference]: Finished difference Result 55 states and 63 transitions. [2018-09-21 18:38:10,771 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-09-21 18:38:10,773 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 22 [2018-09-21 18:38:10,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-21 18:38:10,785 INFO L225 Difference]: With dead ends: 55 [2018-09-21 18:38:10,785 INFO L226 Difference]: Without dead ends: 51 [2018-09-21 18:38:10,787 INFO L606 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 [2018-09-21 18:38:10,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2018-09-21 18:38:10,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2018-09-21 18:38:10,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2018-09-21 18:38:10,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 59 transitions. [2018-09-21 18:38:10,831 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 59 transitions. Word has length 22 [2018-09-21 18:38:10,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-21 18:38:10,832 INFO L480 AbstractCegarLoop]: Abstraction has 51 states and 59 transitions. [2018-09-21 18:38:10,832 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-09-21 18:38:10,832 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 59 transitions. [2018-09-21 18:38:10,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-09-21 18:38:10,833 INFO L368 BasicCegarLoop]: Found error trace [2018-09-21 18:38:10,834 INFO L376 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, 1, 1, 1, 1, 1] [2018-09-21 18:38:10,834 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-21 18:38:10,834 INFO L82 PathProgramCache]: Analyzing trace with hash 154112062, now seen corresponding path program 1 times [2018-09-21 18:38:10,834 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-21 18:38:10,835 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-21 18:38:10,836 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-21 18:38:10,836 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-21 18:38:10,836 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-21 18:38:10,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-09-21 18:38:10,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-09-21 18:38:10,981 INFO L443 BasicCegarLoop]: Counterexample might be feasible [2018-09-21 18:38:11,018 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.09 06:38:11 BoogieIcfgContainer [2018-09-21 18:38:11,018 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-21 18:38:11,019 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-09-21 18:38:11,019 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-09-21 18:38:11,019 INFO L276 PluginConnector]: Witness Printer initialized [2018-09-21 18:38:11,020 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 06:38:10" (3/4) ... [2018-09-21 18:38:11,027 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-09-21 18:38:11,027 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-09-21 18:38:11,028 INFO L168 Benchmark]: Toolchain (without parser) took 1807.59 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 135.3 MB). Free memory was 951.8 MB in the beginning and 1.1 GB in the end (delta: -132.7 MB). Peak memory consumption was 2.6 MB. Max. memory is 11.5 GB. [2018-09-21 18:38:11,030 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-09-21 18:38:11,031 INFO L168 Benchmark]: CACSL2BoogieTranslator took 380.76 ms. Allocated memory is still 1.0 GB. Free memory was 951.8 MB in the beginning and 941.1 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-09-21 18:38:11,031 INFO L168 Benchmark]: Boogie Preprocessor took 49.47 ms. Allocated memory is still 1.0 GB. Free memory was 941.1 MB in the beginning and 935.7 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-09-21 18:38:11,035 INFO L168 Benchmark]: RCFGBuilder took 710.92 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 135.3 MB). Free memory was 935.7 MB in the beginning and 1.1 GB in the end (delta: -175.3 MB). Peak memory consumption was 21.9 MB. Max. memory is 11.5 GB. [2018-09-21 18:38:11,036 INFO L168 Benchmark]: TraceAbstraction took 651.46 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 26.6 MB). Peak memory consumption was 26.6 MB. Max. memory is 11.5 GB. [2018-09-21 18:38:11,037 INFO L168 Benchmark]: Witness Printer took 8.31 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. [2018-09-21 18:38:11,041 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 380.76 ms. Allocated memory is still 1.0 GB. Free memory was 951.8 MB in the beginning and 941.1 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 49.47 ms. Allocated memory is still 1.0 GB. Free memory was 941.1 MB in the beginning and 935.7 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 710.92 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 135.3 MB). Free memory was 935.7 MB in the beginning and 1.1 GB in the end (delta: -175.3 MB). Peak memory consumption was 21.9 MB. Max. memory is 11.5 GB. * TraceAbstraction took 651.46 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 26.6 MB). Peak memory consumption was 26.6 MB. Max. memory is 11.5 GB. * Witness Printer took 8.31 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: 71]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 58, overapproximation of someBinaryArithmeticFLOAToperation at line 45, overapproximation of bitwiseAnd at line 22. Possible FailurePath: [L12] static const float huge_floor = 1.0e30; VAL [\old(huge_floor)=132, huge_floor=1000000000000000000000000000000] [L66] float x = 0.0f / 0.0f; VAL [huge_floor=1000000000000000000000000000000] [L67] CALL, EXPR floor_float(x) VAL [\old(x)=134, huge_floor=1000000000000000000000000000000] [L15] __int32_t i0, j0; [L16] __uint32_t i, ix; VAL [\old(x)=134, huge_floor=1000000000000000000000000000000, x=134] [L18] FCALL ieee_float_shape_type gf_u; VAL [\old(x)=134, gf_u={130:0}, huge_floor=1000000000000000000000000000000, x=134] [L19] FCALL gf_u.value = (x) VAL [\old(x)=134, gf_u={130:0}, huge_floor=1000000000000000000000000000000, x=134] [L20] EXPR, FCALL gf_u.word VAL [\old(x)=134, gf_u={130:0}, gf_u.word=3, huge_floor=1000000000000000000000000000000, x=134] [L20] (i0) = gf_u.word VAL [\old(x)=134, gf_u={130:0}, gf_u.word=3, huge_floor=1000000000000000000000000000000, i0=3, x=134] [L20] FCALL (i0) = gf_u.word VAL [(i0) = gf_u.word=135, \old(x)=134, gf_u={130:0}, gf_u.word=3, huge_floor=1000000000000000000000000000000, i0=3, x=134] [L21] COND FALSE !(0) VAL [\old(x)=134, huge_floor=1000000000000000000000000000000, i0=3, x=134] [L22] ix = (i0 & 0x7fffffff) [L23] j0 = (ix >> 23) - 0x7f VAL [\old(x)=134, huge_floor=1000000000000000000000000000000, i=-36028794871480321, i0=3, j0=128, x=134] [L24] COND FALSE !(j0 < 23) VAL [\old(x)=134, huge_floor=1000000000000000000000000000000, i=-36028794871480321, i0=3, j0=128, x=134] [L44] COND TRUE !((ix) < 0x7f800000L) [L45] RET return x + x; VAL [\old(x)=134, huge_floor=1000000000000000000000000000000, i=-36028794871480321, i0=3, j0=128, x=134] [L67] EXPR floor_float(x) VAL [floor_float(x)=131, huge_floor=1000000000000000000000000000000, x=134] [L67] float res = floor_float(x); [L70] CALL, EXPR isnan_float(res) VAL [\old(x)=131, huge_floor=1000000000000000000000000000000] [L58] RET return x != x; VAL [\old(x)=131, \result=0, huge_floor=1000000000000000000000000000000, x=131] [L70] EXPR isnan_float(res) VAL [huge_floor=1000000000000000000000000000000, isnan_float(res)=0, res=131, x=134] [L70] COND TRUE !isnan_float(res) [L71] __VERIFIER_error() VAL [huge_floor=1000000000000000000000000000000, res=131, x=134] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 55 locations, 1 error locations. UNSAFE Result, 0.5s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 63 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=55occurred 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, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 53 NumberOfCodeBlocks, 53 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 21 ConstructedInterpolants, 0 QuantifiedInterpolants, 441 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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 0.1.23-5eb3fea [2018-09-21 18:38:13,519 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-21 18:38:13,521 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-21 18:38:13,533 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-21 18:38:13,534 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-21 18:38:13,535 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-21 18:38:13,537 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-21 18:38:13,538 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-21 18:38:13,540 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-21 18:38:13,541 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-21 18:38:13,542 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-21 18:38:13,543 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-21 18:38:13,544 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-21 18:38:13,545 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-21 18:38:13,546 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-21 18:38:13,547 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-21 18:38:13,548 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-21 18:38:13,551 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-21 18:38:13,553 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-21 18:38:13,555 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-21 18:38:13,556 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-21 18:38:13,557 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-21 18:38:13,560 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-21 18:38:13,561 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-21 18:38:13,561 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-21 18:38:13,562 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-21 18:38:13,563 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-21 18:38:13,564 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-21 18:38:13,565 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-21 18:38:13,567 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-21 18:38:13,567 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-21 18:38:13,568 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-21 18:38:13,568 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-21 18:38:13,568 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-21 18:38:13,570 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-21 18:38:13,571 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-21 18:38:13,571 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2018-09-21 18:38:13,587 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-21 18:38:13,588 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-21 18:38:13,589 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-21 18:38:13,589 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-09-21 18:38:13,589 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-09-21 18:38:13,590 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-09-21 18:38:13,590 INFO L133 SettingsManager]: * Use SBE=true [2018-09-21 18:38:13,590 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-21 18:38:13,590 INFO L133 SettingsManager]: * sizeof long=4 [2018-09-21 18:38:13,591 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-09-21 18:38:13,592 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-21 18:38:13,592 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-21 18:38:13,592 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-21 18:38:13,592 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-21 18:38:13,593 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-09-21 18:38:13,593 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-09-21 18:38:13,593 INFO L133 SettingsManager]: * sizeof long double=12 [2018-09-21 18:38:13,593 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-21 18:38:13,593 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-21 18:38:13,594 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-21 18:38:13,594 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-21 18:38:13,594 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-21 18:38:13,594 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-21 18:38:13,594 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-21 18:38:13,595 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-21 18:38:13,595 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-21 18:38:13,595 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-21 18:38:13,595 INFO L133 SettingsManager]: * Trace refinement strategy=WOLF [2018-09-21 18:38:13,597 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-21 18:38:13,597 INFO L133 SettingsManager]: * Command for external solver=cvc4nyu --tear-down-incremental --rewrite-divk --print-success --lang smt [2018-09-21 18:38:13,597 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-09-21 18:38:13,597 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 -> 863e70131520c7e8858a4f32bea4c5cffd3e6ae2 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false [2018-09-21 18:38:13,671 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-21 18:38:13,687 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-21 18:38:13,692 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-21 18:38:13,694 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-21 18:38:13,695 INFO L276 PluginConnector]: CDTParser initialized [2018-09-21 18:38:13,695 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1051_true-unreach-call.c [2018-09-21 18:38:14,080 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0720a2c74/4f3aef193fdf42938493c8dbef98086d/FLAG3e2c2ff3f [2018-09-21 18:38:14,245 INFO L277 CDTParser]: Found 1 translation units. [2018-09-21 18:38:14,246 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/float_req_bl_1051_true-unreach-call.c [2018-09-21 18:38:14,253 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0720a2c74/4f3aef193fdf42938493c8dbef98086d/FLAG3e2c2ff3f [2018-09-21 18:38:14,272 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0720a2c74/4f3aef193fdf42938493c8dbef98086d [2018-09-21 18:38:14,277 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-21 18:38:14,280 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-21 18:38:14,282 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-21 18:38:14,282 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-21 18:38:14,290 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-21 18:38:14,291 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 06:38:14" (1/1) ... [2018-09-21 18:38:14,294 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c8a7346 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:38:14, skipping insertion in model container [2018-09-21 18:38:14,295 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 06:38:14" (1/1) ... [2018-09-21 18:38:14,308 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-21 18:38:14,546 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-21 18:38:14,572 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-21 18:38:14,605 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-21 18:38:14,638 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:38:14 WrapperNode [2018-09-21 18:38:14,639 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-21 18:38:14,640 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-21 18:38:14,640 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-21 18:38:14,640 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-21 18:38:14,657 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:38:14" (1/1) ... [2018-09-21 18:38:14,658 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:38:14" (1/1) ... [2018-09-21 18:38:14,672 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:38:14" (1/1) ... [2018-09-21 18:38:14,673 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:38:14" (1/1) ... [2018-09-21 18:38:14,681 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:38:14" (1/1) ... [2018-09-21 18:38:14,687 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:38:14" (1/1) ... [2018-09-21 18:38:14,690 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:38:14" (1/1) ... [2018-09-21 18:38:14,695 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-21 18:38:14,696 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-21 18:38:14,696 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-21 18:38:14,696 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-21 18:38:14,697 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:38:14" (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 [2018-09-21 18:38:14,786 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-21 18:38:14,786 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-21 18:38:14,786 INFO L138 BoogieDeclarations]: Found implementation of procedure floor_float [2018-09-21 18:38:14,786 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_float [2018-09-21 18:38:14,787 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-21 18:38:14,787 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-09-21 18:38:14,787 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2018-09-21 18:38:14,787 INFO L130 BoogieDeclarations]: Found specification of procedure floor_float [2018-09-21 18:38:14,787 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-09-21 18:38:14,788 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2018-09-21 18:38:14,788 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2018-09-21 18:38:14,788 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-09-21 18:38:14,788 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2018-09-21 18:38:14,788 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2018-09-21 18:38:14,789 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_float [2018-09-21 18:38:14,789 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-21 18:38:14,789 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-21 18:38:14,789 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-21 18:38:14,789 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2018-09-21 18:38:14,793 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intFLOATTYPE4 [2018-09-21 18:38:15,570 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-21 18:38:15,613 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-21 18:38:16,106 INFO L373 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-21 18:38:16,107 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 06:38:16 BoogieIcfgContainer [2018-09-21 18:38:16,107 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-21 18:38:16,108 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-21 18:38:16,108 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-21 18:38:16,112 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-21 18:38:16,112 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 06:38:14" (1/3) ... [2018-09-21 18:38:16,113 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@681e2f10 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 06:38:16, skipping insertion in model container [2018-09-21 18:38:16,113 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:38:14" (2/3) ... [2018-09-21 18:38:16,113 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@681e2f10 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 06:38:16, skipping insertion in model container [2018-09-21 18:38:16,114 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 06:38:16" (3/3) ... [2018-09-21 18:38:16,115 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_1051_true-unreach-call.c [2018-09-21 18:38:16,126 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-21 18:38:16,135 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-21 18:38:16,175 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-21 18:38:16,176 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-21 18:38:16,176 INFO L382 AbstractCegarLoop]: Hoare is false [2018-09-21 18:38:16,177 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-21 18:38:16,177 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-21 18:38:16,177 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-21 18:38:16,177 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-21 18:38:16,178 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-21 18:38:16,178 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-21 18:38:16,195 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states. [2018-09-21 18:38:16,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-09-21 18:38:16,207 INFO L368 BasicCegarLoop]: Found error trace [2018-09-21 18:38:16,208 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-21 18:38:16,211 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-21 18:38:16,217 INFO L82 PathProgramCache]: Analyzing trace with hash -418331411, now seen corresponding path program 1 times [2018-09-21 18:38:16,222 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-21 18:38:16,222 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 [2018-09-21 18:38:16,233 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-21 18:38:16,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-21 18:38:16,324 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-21 18:38:16,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-21 18:38:16,346 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-21 18:38:16,360 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-21 18:38:16,360 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-09-21 18:38:16,366 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-09-21 18:38:16,379 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-09-21 18:38:16,380 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-09-21 18:38:16,382 INFO L87 Difference]: Start difference. First operand 54 states. Second operand 2 states. [2018-09-21 18:38:16,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-21 18:38:16,401 INFO L93 Difference]: Finished difference Result 54 states and 62 transitions. [2018-09-21 18:38:16,401 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-09-21 18:38:16,403 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 21 [2018-09-21 18:38:16,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-21 18:38:16,415 INFO L225 Difference]: With dead ends: 54 [2018-09-21 18:38:16,415 INFO L226 Difference]: Without dead ends: 50 [2018-09-21 18:38:16,417 INFO L606 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 [2018-09-21 18:38:16,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2018-09-21 18:38:16,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2018-09-21 18:38:16,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2018-09-21 18:38:16,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 58 transitions. [2018-09-21 18:38:16,463 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 58 transitions. Word has length 21 [2018-09-21 18:38:16,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-21 18:38:16,464 INFO L480 AbstractCegarLoop]: Abstraction has 50 states and 58 transitions. [2018-09-21 18:38:16,464 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-09-21 18:38:16,464 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 58 transitions. [2018-09-21 18:38:16,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-09-21 18:38:16,465 INFO L368 BasicCegarLoop]: Found error trace [2018-09-21 18:38:16,466 INFO L376 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, 1, 1, 1, 1] [2018-09-21 18:38:16,466 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-21 18:38:16,466 INFO L82 PathProgramCache]: Analyzing trace with hash -960897078, now seen corresponding path program 1 times [2018-09-21 18:38:16,467 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-21 18:38:16,467 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2018-09-21 18:38:16,476 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-21 18:38:16,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-21 18:38:16,557 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-21 18:38:17,403 WARN L178 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2018-09-21 18:38:17,528 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-21 18:38:17,528 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-21 18:38:17,539 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-21 18:38:17,540 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2018-09-21 18:38:17,542 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-21 18:38:17,542 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-21 18:38:17,542 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2018-09-21 18:38:17,543 INFO L87 Difference]: Start difference. First operand 50 states and 58 transitions. Second operand 9 states. [2018-09-21 18:38:18,183 WARN L178 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2018-09-21 18:38:20,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-21 18:38:20,191 INFO L93 Difference]: Finished difference Result 57 states and 65 transitions. [2018-09-21 18:38:20,192 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-09-21 18:38:20,192 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 30 [2018-09-21 18:38:20,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-21 18:38:20,196 INFO L225 Difference]: With dead ends: 57 [2018-09-21 18:38:20,196 INFO L226 Difference]: Without dead ends: 52 [2018-09-21 18:38:20,197 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2018-09-21 18:38:20,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2018-09-21 18:38:20,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 50. [2018-09-21 18:38:20,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2018-09-21 18:38:20,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 57 transitions. [2018-09-21 18:38:20,209 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 57 transitions. Word has length 30 [2018-09-21 18:38:20,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-21 18:38:20,210 INFO L480 AbstractCegarLoop]: Abstraction has 50 states and 57 transitions. [2018-09-21 18:38:20,210 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-21 18:38:20,210 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 57 transitions. [2018-09-21 18:38:20,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-09-21 18:38:20,211 INFO L368 BasicCegarLoop]: Found error trace [2018-09-21 18:38:20,212 INFO L376 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, 1, 1, 1, 1] [2018-09-21 18:38:20,212 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-21 18:38:20,212 INFO L82 PathProgramCache]: Analyzing trace with hash -1157410583, now seen corresponding path program 1 times [2018-09-21 18:38:20,213 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-21 18:38:20,213 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 [2018-09-21 18:38:20,227 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-21 18:38:20,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-21 18:38:20,276 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-21 18:38:20,639 WARN L178 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2018-09-21 18:38:20,809 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-21 18:38:20,810 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-21 18:38:20,821 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-21 18:38:20,821 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2018-09-21 18:38:20,821 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-21 18:38:20,822 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-21 18:38:20,822 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2018-09-21 18:38:20,822 INFO L87 Difference]: Start difference. First operand 50 states and 57 transitions. Second operand 9 states. [2018-09-21 18:38:21,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-21 18:38:21,631 INFO L93 Difference]: Finished difference Result 55 states and 62 transitions. [2018-09-21 18:38:21,632 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-09-21 18:38:21,632 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 30 [2018-09-21 18:38:21,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-21 18:38:21,635 INFO L225 Difference]: With dead ends: 55 [2018-09-21 18:38:21,635 INFO L226 Difference]: Without dead ends: 49 [2018-09-21 18:38:21,636 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2018-09-21 18:38:21,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2018-09-21 18:38:21,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2018-09-21 18:38:21,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2018-09-21 18:38:21,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 54 transitions. [2018-09-21 18:38:21,643 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 54 transitions. Word has length 30 [2018-09-21 18:38:21,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-21 18:38:21,644 INFO L480 AbstractCegarLoop]: Abstraction has 49 states and 54 transitions. [2018-09-21 18:38:21,644 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-21 18:38:21,644 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 54 transitions. [2018-09-21 18:38:21,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2018-09-21 18:38:21,645 INFO L368 BasicCegarLoop]: Found error trace [2018-09-21 18:38:21,645 INFO L376 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-21 18:38:21,646 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-21 18:38:21,646 INFO L82 PathProgramCache]: Analyzing trace with hash 1200312195, now seen corresponding path program 1 times [2018-09-21 18:38:21,647 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-21 18:38:21,647 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 [2018-09-21 18:38:21,660 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-21 18:38:21,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-21 18:38:21,740 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-21 18:38:21,803 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 8 [2018-09-21 18:38:21,807 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2018-09-21 18:38:21,808 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-21 18:38:21,812 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-21 18:38:21,824 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-09-21 18:38:21,824 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:21, output treesize:21 [2018-09-21 18:38:21,860 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2018-09-21 18:38:21,864 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2018-09-21 18:38:21,865 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-21 18:38:21,869 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-21 18:38:21,872 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-09-21 18:38:21,873 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:29, output treesize:9 [2018-09-21 18:38:22,189 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-21 18:38:22,189 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-21 18:38:22,204 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-21 18:38:22,204 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2018-09-21 18:38:22,205 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-21 18:38:22,205 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-21 18:38:22,206 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2018-09-21 18:38:22,206 INFO L87 Difference]: Start difference. First operand 49 states and 54 transitions. Second operand 9 states. [2018-09-21 18:38:24,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-21 18:38:24,181 INFO L93 Difference]: Finished difference Result 55 states and 59 transitions. [2018-09-21 18:38:24,182 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-09-21 18:38:24,182 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 42 [2018-09-21 18:38:24,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-21 18:38:24,183 INFO L225 Difference]: With dead ends: 55 [2018-09-21 18:38:24,183 INFO L226 Difference]: Without dead ends: 0 [2018-09-21 18:38:24,184 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=78, Invalid=264, Unknown=0, NotChecked=0, Total=342 [2018-09-21 18:38:24,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-09-21 18:38:24,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-09-21 18:38:24,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-09-21 18:38:24,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-09-21 18:38:24,185 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 42 [2018-09-21 18:38:24,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-21 18:38:24,185 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-09-21 18:38:24,185 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-21 18:38:24,185 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-09-21 18:38:24,185 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-09-21 18:38:24,191 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.09 06:38:24 BoogieIcfgContainer [2018-09-21 18:38:24,191 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-21 18:38:24,191 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-09-21 18:38:24,192 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-09-21 18:38:24,192 INFO L276 PluginConnector]: Witness Printer initialized [2018-09-21 18:38:24,192 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 06:38:16" (3/4) ... [2018-09-21 18:38:24,197 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-09-21 18:38:24,203 INFO L316 RCFGBacktranslator]: Ignoring RootEdge to procedure isnan_float [2018-09-21 18:38:24,204 INFO L316 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-09-21 18:38:24,204 INFO L316 RCFGBacktranslator]: Ignoring RootEdge to procedure floor_float [2018-09-21 18:38:24,204 INFO L316 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-09-21 18:38:24,210 INFO L850 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2018-09-21 18:38:24,211 INFO L850 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2018-09-21 18:38:24,211 INFO L850 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-09-21 18:38:24,273 INFO L145 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2018-09-21 18:38:24,273 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-09-21 18:38:24,275 INFO L168 Benchmark]: Toolchain (without parser) took 9997.17 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 147.3 MB). Free memory was 949.7 MB in the beginning and 946.4 MB in the end (delta: 3.3 MB). Peak memory consumption was 150.7 MB. Max. memory is 11.5 GB. [2018-09-21 18:38:24,276 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-09-21 18:38:24,276 INFO L168 Benchmark]: CACSL2BoogieTranslator took 357.14 ms. Allocated memory is still 1.0 GB. Free memory was 949.7 MB in the beginning and 939.0 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-09-21 18:38:24,277 INFO L168 Benchmark]: Boogie Preprocessor took 55.10 ms. Allocated memory is still 1.0 GB. Free memory was 939.0 MB in the beginning and 933.6 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-09-21 18:38:24,278 INFO L168 Benchmark]: RCFGBuilder took 1411.57 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 147.3 MB). Free memory was 933.6 MB in the beginning and 1.1 GB in the end (delta: -187.8 MB). Peak memory consumption was 21.5 MB. Max. memory is 11.5 GB. [2018-09-21 18:38:24,279 INFO L168 Benchmark]: TraceAbstraction took 8082.87 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 946.4 MB in the end (delta: 175.1 MB). Peak memory consumption was 175.1 MB. Max. memory is 11.5 GB. [2018-09-21 18:38:24,280 INFO L168 Benchmark]: Witness Printer took 81.80 ms. Allocated memory is still 1.2 GB. Free memory is still 946.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-09-21 18:38:24,284 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 357.14 ms. Allocated memory is still 1.0 GB. Free memory was 949.7 MB in the beginning and 939.0 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 55.10 ms. Allocated memory is still 1.0 GB. Free memory was 939.0 MB in the beginning and 933.6 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 1411.57 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 147.3 MB). Free memory was 933.6 MB in the beginning and 1.1 GB in the end (delta: -187.8 MB). Peak memory consumption was 21.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 8082.87 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 946.4 MB in the end (delta: 175.1 MB). Peak memory consumption was 175.1 MB. Max. memory is 11.5 GB. * Witness Printer took 81.80 ms. Allocated memory is still 1.2 GB. Free memory is still 946.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 71]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 54 locations, 1 error locations. SAFE Result, 8.0s OverallTime, 4 OverallIterations, 1 TraceHistogramMax, 5.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 184 SDtfs, 155 SDslu, 707 SDs, 0 SdLazy, 275 SolverSat, 15 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 137 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 3.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=54occurred 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, 4 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 2.0s InterpolantComputationTime, 123 NumberOfCodeBlocks, 123 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 119 ConstructedInterpolants, 16 QuantifiedInterpolants, 25014 SizeOfPredicates, 17 NumberOfNonLiveVariables, 264 ConjunctsInSsa, 33 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...