/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/Ultimate.py --spec ../../../trunk/examples/svcomp/ReachSafety.prp --file ../../../trunk/examples/svcomp/float-newlib/float_req_bl_1230_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_1230_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 31da98a788dd1938c78053bade42bc512d4e8954 --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_1230_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 31da98a788dd1938c78053bade42bc512d4e8954 --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 18:39:39,494 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-21 18:39:39,496 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-21 18:39:39,518 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-21 18:39:39,518 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-21 18:39:39,519 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-21 18:39:39,521 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-21 18:39:39,523 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-21 18:39:39,526 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-21 18:39:39,528 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-21 18:39:39,529 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-21 18:39:39,529 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-21 18:39:39,530 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-21 18:39:39,531 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-21 18:39:39,532 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-21 18:39:39,533 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-21 18:39:39,534 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-21 18:39:39,536 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-21 18:39:39,538 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-21 18:39:39,540 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-21 18:39:39,541 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-21 18:39:39,542 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-21 18:39:39,545 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-21 18:39:39,545 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-21 18:39:39,545 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-21 18:39:39,546 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-21 18:39:39,547 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-21 18:39:39,548 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-21 18:39:39,549 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-21 18:39:39,550 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-21 18:39:39,551 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-21 18:39:39,551 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-21 18:39:39,552 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-21 18:39:39,552 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-21 18:39:39,553 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-21 18:39:39,554 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-21 18:39:39,554 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-09-21 18:39:39,580 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-21 18:39:39,581 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-21 18:39:39,582 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-21 18:39:39,582 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-09-21 18:39:39,583 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-09-21 18:39:39,583 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-09-21 18:39:39,584 INFO L133 SettingsManager]: * Use SBE=true [2018-09-21 18:39:39,585 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-21 18:39:39,585 INFO L133 SettingsManager]: * sizeof long=4 [2018-09-21 18:39:39,585 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-21 18:39:39,585 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-09-21 18:39:39,586 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-21 18:39:39,587 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-21 18:39:39,587 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-21 18:39:39,587 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-21 18:39:39,587 INFO L133 SettingsManager]: * sizeof long double=12 [2018-09-21 18:39:39,588 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-21 18:39:39,588 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-21 18:39:39,588 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-21 18:39:39,588 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-21 18:39:39,590 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-21 18:39:39,591 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-21 18:39:39,591 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-21 18:39:39,591 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-21 18:39:39,591 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-21 18:39:39,591 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-21 18:39:39,592 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-09-21 18:39:39,592 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-21 18:39:39,592 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-21 18:39:39,593 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 -> 31da98a788dd1938c78053bade42bc512d4e8954 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 18:39:39,650 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-21 18:39:39,668 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-21 18:39:39,672 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-21 18:39:39,674 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-21 18:39:39,675 INFO L276 PluginConnector]: CDTParser initialized [2018-09-21 18:39:39,675 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1230_true-unreach-call.c [2018-09-21 18:39:40,024 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a4b5f202a/2477cf172e9d40bca7387980c820be46/FLAGe25c9f12e [2018-09-21 18:39:40,208 INFO L277 CDTParser]: Found 1 translation units. [2018-09-21 18:39:40,209 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/float_req_bl_1230_true-unreach-call.c [2018-09-21 18:39:40,218 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a4b5f202a/2477cf172e9d40bca7387980c820be46/FLAGe25c9f12e [2018-09-21 18:39:40,238 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a4b5f202a/2477cf172e9d40bca7387980c820be46 [2018-09-21 18:39:40,245 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-21 18:39:40,252 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-21 18:39:40,253 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-21 18:39:40,255 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-21 18:39:40,264 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-21 18:39:40,265 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 06:39:40" (1/1) ... [2018-09-21 18:39:40,271 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@682d7878 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:39:40, skipping insertion in model container [2018-09-21 18:39:40,271 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 06:39:40" (1/1) ... [2018-09-21 18:39:40,285 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-21 18:39:40,577 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-21 18:39:40,599 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-21 18:39:40,627 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-21 18:39:40,666 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:39:40 WrapperNode [2018-09-21 18:39:40,666 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-21 18:39:40,669 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-21 18:39:40,669 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-21 18:39:40,669 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-21 18:39:40,686 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:39:40" (1/1) ... [2018-09-21 18:39:40,686 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:39:40" (1/1) ... [2018-09-21 18:39:40,700 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:39:40" (1/1) ... [2018-09-21 18:39:40,701 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:39:40" (1/1) ... [2018-09-21 18:39:40,717 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:39:40" (1/1) ... [2018-09-21 18:39:40,728 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:39:40" (1/1) ... [2018-09-21 18:39:40,737 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:39:40" (1/1) ... [2018-09-21 18:39:40,743 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-21 18:39:40,743 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-21 18:39:40,743 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-21 18:39:40,744 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-21 18:39:40,750 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:39:40" (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 18:39:40,827 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-21 18:39:40,828 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-21 18:39:40,828 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_float [2018-09-21 18:39:40,828 INFO L138 BoogieDeclarations]: Found implementation of procedure fmin_float [2018-09-21 18:39:40,828 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_float [2018-09-21 18:39:40,828 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-21 18:39:40,829 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-09-21 18:39:40,829 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_float [2018-09-21 18:39:40,829 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-09-21 18:39:40,830 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2018-09-21 18:39:40,830 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-09-21 18:39:40,830 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-09-21 18:39:40,830 INFO L130 BoogieDeclarations]: Found specification of procedure fmin_float [2018-09-21 18:39:40,830 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_float [2018-09-21 18:39:40,830 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-21 18:39:40,833 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-21 18:39:40,834 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-21 18:39:40,834 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2018-09-21 18:39:40,834 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-09-21 18:39:40,834 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~real [2018-09-21 18:39:40,834 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2018-09-21 18:39:41,527 INFO L373 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-21 18:39:41,528 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 06:39:41 BoogieIcfgContainer [2018-09-21 18:39:41,528 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-21 18:39:41,529 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-21 18:39:41,529 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-21 18:39:41,533 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-21 18:39:41,534 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 06:39:40" (1/3) ... [2018-09-21 18:39:41,534 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f6883b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 06:39:41, skipping insertion in model container [2018-09-21 18:39:41,535 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:39:40" (2/3) ... [2018-09-21 18:39:41,535 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f6883b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 06:39:41, skipping insertion in model container [2018-09-21 18:39:41,535 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 06:39:41" (3/3) ... [2018-09-21 18:39:41,538 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_1230_true-unreach-call.c [2018-09-21 18:39:41,549 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-21 18:39:41,558 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-21 18:39:41,606 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-21 18:39:41,607 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-21 18:39:41,607 INFO L382 AbstractCegarLoop]: Hoare is false [2018-09-21 18:39:41,607 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-21 18:39:41,607 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-21 18:39:41,607 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-21 18:39:41,608 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-21 18:39:41,608 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-21 18:39:41,608 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-21 18:39:41,625 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states. [2018-09-21 18:39:41,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-09-21 18:39:41,637 INFO L368 BasicCegarLoop]: Found error trace [2018-09-21 18:39:41,638 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] [2018-09-21 18:39:41,641 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-21 18:39:41,647 INFO L82 PathProgramCache]: Analyzing trace with hash 972398874, now seen corresponding path program 1 times [2018-09-21 18:39:41,650 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-21 18:39:41,650 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-21 18:39:41,705 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-21 18:39:41,706 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-21 18:39:41,706 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-21 18:39:41,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-21 18:39:41,800 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 18:39:41,803 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-21 18:39:41,804 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-09-21 18:39:41,809 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-09-21 18:39:41,824 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-09-21 18:39:41,824 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-09-21 18:39:41,826 INFO L87 Difference]: Start difference. First operand 48 states. Second operand 2 states. [2018-09-21 18:39:41,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-21 18:39:41,849 INFO L93 Difference]: Finished difference Result 48 states and 55 transitions. [2018-09-21 18:39:41,849 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-09-21 18:39:41,850 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 26 [2018-09-21 18:39:41,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-21 18:39:41,860 INFO L225 Difference]: With dead ends: 48 [2018-09-21 18:39:41,860 INFO L226 Difference]: Without dead ends: 44 [2018-09-21 18:39:41,862 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 18:39:41,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2018-09-21 18:39:41,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2018-09-21 18:39:41,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2018-09-21 18:39:41,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 51 transitions. [2018-09-21 18:39:41,912 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 51 transitions. Word has length 26 [2018-09-21 18:39:41,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-21 18:39:41,913 INFO L480 AbstractCegarLoop]: Abstraction has 44 states and 51 transitions. [2018-09-21 18:39:41,913 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-09-21 18:39:41,913 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 51 transitions. [2018-09-21 18:39:41,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2018-09-21 18:39:41,919 INFO L368 BasicCegarLoop]: Found error trace [2018-09-21 18:39:41,920 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] [2018-09-21 18:39:41,920 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-21 18:39:41,921 INFO L82 PathProgramCache]: Analyzing trace with hash 1488347716, now seen corresponding path program 1 times [2018-09-21 18:39:41,921 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-21 18:39:41,921 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-21 18:39:41,923 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-21 18:39:41,923 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-21 18:39:41,923 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-21 18:39:41,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-21 18:39:42,079 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 18:39:42,080 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-21 18:39:42,080 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-21 18:39:42,082 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-21 18:39:42,083 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-21 18:39:42,083 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-21 18:39:42,083 INFO L87 Difference]: Start difference. First operand 44 states and 51 transitions. Second operand 4 states. [2018-09-21 18:39:42,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-21 18:39:42,155 INFO L93 Difference]: Finished difference Result 48 states and 56 transitions. [2018-09-21 18:39:42,156 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-21 18:39:42,156 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 35 [2018-09-21 18:39:42,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-21 18:39:42,160 INFO L225 Difference]: With dead ends: 48 [2018-09-21 18:39:42,160 INFO L226 Difference]: Without dead ends: 48 [2018-09-21 18:39:42,161 INFO L606 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 [2018-09-21 18:39:42,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2018-09-21 18:39:42,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2018-09-21 18:39:42,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2018-09-21 18:39:42,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 56 transitions. [2018-09-21 18:39:42,174 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 56 transitions. Word has length 35 [2018-09-21 18:39:42,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-21 18:39:42,174 INFO L480 AbstractCegarLoop]: Abstraction has 48 states and 56 transitions. [2018-09-21 18:39:42,175 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-21 18:39:42,175 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 56 transitions. [2018-09-21 18:39:42,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-09-21 18:39:42,177 INFO L368 BasicCegarLoop]: Found error trace [2018-09-21 18:39:42,177 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] [2018-09-21 18:39:42,178 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-21 18:39:42,178 INFO L82 PathProgramCache]: Analyzing trace with hash -1403372891, now seen corresponding path program 1 times [2018-09-21 18:39:42,178 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-21 18:39:42,178 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-21 18:39:42,179 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-21 18:39:42,179 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-21 18:39:42,181 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-21 18:39:42,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-21 18:39:42,291 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 18:39:42,292 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-21 18:39:42,292 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-21 18:39:42,292 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-21 18:39:42,293 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-21 18:39:42,293 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-21 18:39:42,293 INFO L87 Difference]: Start difference. First operand 48 states and 56 transitions. Second operand 4 states. [2018-09-21 18:39:42,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-21 18:39:42,385 INFO L93 Difference]: Finished difference Result 52 states and 61 transitions. [2018-09-21 18:39:42,386 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-21 18:39:42,386 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 38 [2018-09-21 18:39:42,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-21 18:39:42,388 INFO L225 Difference]: With dead ends: 52 [2018-09-21 18:39:42,388 INFO L226 Difference]: Without dead ends: 52 [2018-09-21 18:39:42,389 INFO L606 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 [2018-09-21 18:39:42,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2018-09-21 18:39:42,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 48. [2018-09-21 18:39:42,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2018-09-21 18:39:42,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 56 transitions. [2018-09-21 18:39:42,399 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 56 transitions. Word has length 38 [2018-09-21 18:39:42,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-21 18:39:42,399 INFO L480 AbstractCegarLoop]: Abstraction has 48 states and 56 transitions. [2018-09-21 18:39:42,400 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-21 18:39:42,400 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 56 transitions. [2018-09-21 18:39:42,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-09-21 18:39:42,402 INFO L368 BasicCegarLoop]: Found error trace [2018-09-21 18:39:42,402 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] [2018-09-21 18:39:42,402 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-21 18:39:42,403 INFO L82 PathProgramCache]: Analyzing trace with hash 104178918, now seen corresponding path program 1 times [2018-09-21 18:39:42,403 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-21 18:39:42,403 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-21 18:39:42,405 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-21 18:39:42,405 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-21 18:39:42,405 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-21 18:39:42,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-09-21 18:39:42,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-09-21 18:39:42,510 INFO L443 BasicCegarLoop]: Counterexample might be feasible [2018-09-21 18:39:42,558 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.09 06:39:42 BoogieIcfgContainer [2018-09-21 18:39:42,558 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-21 18:39:42,559 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-09-21 18:39:42,559 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-09-21 18:39:42,559 INFO L276 PluginConnector]: Witness Printer initialized [2018-09-21 18:39:42,560 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 06:39:41" (3/4) ... [2018-09-21 18:39:42,564 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-09-21 18:39:42,564 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-09-21 18:39:42,565 INFO L168 Benchmark]: Toolchain (without parser) took 2319.85 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 127.4 MB). Free memory was 951.9 MB in the beginning and 1.1 GB in the end (delta: -102.5 MB). Peak memory consumption was 24.9 MB. Max. memory is 11.5 GB. [2018-09-21 18:39:42,568 INFO L168 Benchmark]: CDTParser took 0.17 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 18:39:42,568 INFO L168 Benchmark]: CACSL2BoogieTranslator took 413.06 ms. Allocated memory is still 1.0 GB. Free memory was 951.9 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 18:39:42,569 INFO L168 Benchmark]: Boogie Preprocessor took 73.98 ms. Allocated memory is still 1.0 GB. Free memory is still 941.1 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-09-21 18:39:42,570 INFO L168 Benchmark]: RCFGBuilder took 784.86 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 127.4 MB). Free memory was 941.1 MB in the beginning and 1.1 GB in the end (delta: -161.2 MB). Peak memory consumption was 27.1 MB. Max. memory is 11.5 GB. [2018-09-21 18:39:42,571 INFO L168 Benchmark]: TraceAbstraction took 1029.14 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: 47.9 MB). Peak memory consumption was 47.9 MB. Max. memory is 11.5 GB. [2018-09-21 18:39:42,572 INFO L168 Benchmark]: Witness Printer took 5.62 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 18:39:42,576 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 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 413.06 ms. Allocated memory is still 1.0 GB. Free memory was 951.9 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 73.98 ms. Allocated memory is still 1.0 GB. Free memory is still 941.1 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 784.86 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 127.4 MB). Free memory was 941.1 MB in the beginning and 1.1 GB in the end (delta: -161.2 MB). Peak memory consumption was 27.1 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1029.14 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: 47.9 MB). Peak memory consumption was 47.9 MB. Max. memory is 11.5 GB. * Witness Printer took 5.62 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: 59]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 44, overapproximation of someBinaryArithmeticFLOAToperation at line 54. Possible FailurePath: [L54] float x = 0.0f / 0.0f; [L55] float y = 0.0f / 0.0f; [L56] CALL, EXPR fmin_float(x, y) VAL [\old(x)=4286578691, \old(y)=4286578692] [L35] CALL, EXPR __fpclassify_float(x) VAL [\old(x)=4286578691] [L12] __uint32_t w; VAL [\old(x)=4286578691, x=4286578691] [L15] FCALL ieee_float_shape_type gf_u; VAL [\old(x)=4286578691, gf_u={4286578695:0}, x=4286578691] [L16] FCALL gf_u.value = (x) VAL [\old(x)=4286578691, gf_u={4286578695:0}, x=4286578691] [L17] EXPR, FCALL gf_u.word VAL [\old(x)=4286578691, gf_u={4286578695:0}, gf_u.word=4286578689, x=4286578691] [L17] (w) = gf_u.word VAL [\old(x)=4286578691, gf_u={4286578695:0}, gf_u.word=4286578689, w=4286578689, x=4286578691] [L17] FCALL (w) = gf_u.word VAL [(w) = gf_u.word=4286578693, \old(x)=4286578691, gf_u={4286578695:0}, gf_u.word=4286578689, w=4286578689, x=4286578691] [L18] COND FALSE !(0) VAL [\old(x)=4286578691, w=4286578689, x=4286578691] [L20] COND FALSE !(w == 0x00000000 || w == 0x80000000) VAL [\old(x)=4286578691, w=4286578689, x=4286578691] [L22-L23] COND FALSE !((w >= 0x00800000 && w <= 0x7f7fffff) || (w >= 0x80800000 && w <= 0xff7fffff)) VAL [\old(x)=4286578691, w=4286578689, x=4286578691] [L25-L26] COND FALSE !((w >= 0x00000001 && w <= 0x007fffff) || (w >= 0x80000001 && w <= 0x807fffff)) VAL [\old(x)=4286578691, w=4286578689, x=4286578691] [L28] COND FALSE !(w == 0x7f800000 || w == 0xff800000) [L31] RET return 0; VAL [\old(x)=4286578691, \result=0, w=4286578689, x=4286578691] [L35] EXPR __fpclassify_float(x) VAL [\old(x)=4286578691, \old(y)=4286578692, __fpclassify_float(x)=0, x=4286578691, y=4286578692] [L35] COND TRUE __fpclassify_float(x) == 0 [L36] RET return y; VAL [\old(x)=4286578691, \old(y)=4286578692, \result=4286578692, x=4286578691, y=4286578692] [L56] EXPR fmin_float(x, y) VAL [fmin_float(x, y)=4286578692, x=4286578691, y=4286578692] [L56] float res = fmin_float(x, y); [L58] CALL, EXPR isnan_float(res) VAL [\old(x)=4286578692] [L44] RET return x != x; VAL [\old(x)=4286578692, \result=0, x=4286578692] [L58] EXPR isnan_float(res) VAL [isnan_float(res)=0, res=4286578692, x=4286578691, y=4286578692] [L58] COND TRUE !isnan_float(res) [L59] __VERIFIER_error() VAL [res=4286578692, x=4286578691, y=4286578692] - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 48 locations, 1 error locations. UNSAFE Result, 0.9s OverallTime, 4 OverallIterations, 1 TraceHistogramMax, 0.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 158 SDtfs, 0 SDslu, 190 SDs, 0 SdLazy, 21 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=48occurred 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, 137 NumberOfCodeBlocks, 137 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 96 ConstructedInterpolants, 0 QuantifiedInterpolants, 3718 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 0.1.23-5eb3fea [2018-09-21 18:39:44,984 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-21 18:39:44,986 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-21 18:39:44,999 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-21 18:39:44,999 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-21 18:39:45,000 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-21 18:39:45,002 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-21 18:39:45,015 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-21 18:39:45,017 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-21 18:39:45,020 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-21 18:39:45,023 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-21 18:39:45,023 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-21 18:39:45,025 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-21 18:39:45,028 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-21 18:39:45,034 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-21 18:39:45,035 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-21 18:39:45,039 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-21 18:39:45,041 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-21 18:39:45,045 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-21 18:39:45,049 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-21 18:39:45,051 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-21 18:39:45,055 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-21 18:39:45,057 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-21 18:39:45,062 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-21 18:39:45,062 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-21 18:39:45,063 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-21 18:39:45,064 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-21 18:39:45,066 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-21 18:39:45,067 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-21 18:39:45,069 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-21 18:39:45,069 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-21 18:39:45,070 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-21 18:39:45,070 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-21 18:39:45,070 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-21 18:39:45,073 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-21 18:39:45,074 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-21 18:39:45,075 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2018-09-21 18:39:45,101 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-21 18:39:45,102 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-21 18:39:45,103 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-21 18:39:45,103 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-09-21 18:39:45,104 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-09-21 18:39:45,104 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-09-21 18:39:45,104 INFO L133 SettingsManager]: * Use SBE=true [2018-09-21 18:39:45,105 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-21 18:39:45,105 INFO L133 SettingsManager]: * sizeof long=4 [2018-09-21 18:39:45,105 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-09-21 18:39:45,105 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-21 18:39:45,105 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-21 18:39:45,106 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-21 18:39:45,106 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-21 18:39:45,107 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-09-21 18:39:45,107 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-09-21 18:39:45,107 INFO L133 SettingsManager]: * sizeof long double=12 [2018-09-21 18:39:45,107 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-21 18:39:45,107 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-21 18:39:45,107 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-21 18:39:45,108 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-21 18:39:45,108 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-21 18:39:45,108 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-21 18:39:45,108 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-21 18:39:45,108 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-21 18:39:45,110 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-21 18:39:45,110 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-21 18:39:45,110 INFO L133 SettingsManager]: * Trace refinement strategy=WOLF [2018-09-21 18:39:45,110 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-21 18:39:45,111 INFO L133 SettingsManager]: * Command for external solver=cvc4nyu --tear-down-incremental --rewrite-divk --print-success --lang smt [2018-09-21 18:39:45,111 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-09-21 18:39:45,111 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 -> 31da98a788dd1938c78053bade42bc512d4e8954 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 18:39:45,164 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-21 18:39:45,178 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-21 18:39:45,182 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-21 18:39:45,184 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-21 18:39:45,185 INFO L276 PluginConnector]: CDTParser initialized [2018-09-21 18:39:45,186 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1230_true-unreach-call.c [2018-09-21 18:39:45,536 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/62af55711/96308cf52f6047e49c70371496834d6a/FLAG55d5623ea [2018-09-21 18:39:45,662 INFO L277 CDTParser]: Found 1 translation units. [2018-09-21 18:39:45,663 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/float_req_bl_1230_true-unreach-call.c [2018-09-21 18:39:45,671 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/62af55711/96308cf52f6047e49c70371496834d6a/FLAG55d5623ea [2018-09-21 18:39:45,690 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/62af55711/96308cf52f6047e49c70371496834d6a [2018-09-21 18:39:45,694 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-21 18:39:45,698 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-21 18:39:45,699 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-21 18:39:45,700 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-21 18:39:45,707 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-21 18:39:45,708 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 06:39:45" (1/1) ... [2018-09-21 18:39:45,712 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@17bd2d17 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:39:45, skipping insertion in model container [2018-09-21 18:39:45,713 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 06:39:45" (1/1) ... [2018-09-21 18:39:45,725 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-21 18:39:45,951 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-21 18:39:45,972 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-21 18:39:45,987 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-21 18:39:46,020 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:39:46 WrapperNode [2018-09-21 18:39:46,021 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-21 18:39:46,022 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-21 18:39:46,022 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-21 18:39:46,022 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-21 18:39:46,038 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:39:46" (1/1) ... [2018-09-21 18:39:46,038 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:39:46" (1/1) ... [2018-09-21 18:39:46,051 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:39:46" (1/1) ... [2018-09-21 18:39:46,052 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:39:46" (1/1) ... [2018-09-21 18:39:46,059 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:39:46" (1/1) ... [2018-09-21 18:39:46,065 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:39:46" (1/1) ... [2018-09-21 18:39:46,068 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:39:46" (1/1) ... [2018-09-21 18:39:46,072 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-21 18:39:46,073 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-21 18:39:46,073 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-21 18:39:46,073 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-21 18:39:46,074 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:39:46" (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 18:39:46,147 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-21 18:39:46,148 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-21 18:39:46,148 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_float [2018-09-21 18:39:46,148 INFO L138 BoogieDeclarations]: Found implementation of procedure fmin_float [2018-09-21 18:39:46,148 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_float [2018-09-21 18:39:46,148 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-21 18:39:46,148 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-09-21 18:39:46,149 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_float [2018-09-21 18:39:46,149 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-09-21 18:39:46,149 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2018-09-21 18:39:46,149 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2018-09-21 18:39:46,149 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-09-21 18:39:46,150 INFO L130 BoogieDeclarations]: Found specification of procedure fmin_float [2018-09-21 18:39:46,150 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_float [2018-09-21 18:39:46,151 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-21 18:39:46,151 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-21 18:39:46,151 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-21 18:39:46,151 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intFLOATTYPE4 [2018-09-21 18:39:46,151 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2018-09-21 18:39:46,152 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2018-09-21 18:39:46,152 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2018-09-21 18:39:46,612 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-21 18:39:46,651 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-21 18:39:46,761 INFO L373 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-21 18:39:46,762 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 06:39:46 BoogieIcfgContainer [2018-09-21 18:39:46,762 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-21 18:39:46,764 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-21 18:39:46,764 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-21 18:39:46,768 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-21 18:39:46,768 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 06:39:45" (1/3) ... [2018-09-21 18:39:46,769 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56bea333 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 06:39:46, skipping insertion in model container [2018-09-21 18:39:46,770 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:39:46" (2/3) ... [2018-09-21 18:39:46,770 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56bea333 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 06:39:46, skipping insertion in model container [2018-09-21 18:39:46,770 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 06:39:46" (3/3) ... [2018-09-21 18:39:46,773 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_1230_true-unreach-call.c [2018-09-21 18:39:46,784 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-21 18:39:46,794 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-21 18:39:46,839 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-21 18:39:46,840 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-21 18:39:46,840 INFO L382 AbstractCegarLoop]: Hoare is false [2018-09-21 18:39:46,840 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-21 18:39:46,841 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-21 18:39:46,841 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-21 18:39:46,841 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-21 18:39:46,841 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-21 18:39:46,842 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-21 18:39:46,858 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states. [2018-09-21 18:39:46,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-09-21 18:39:46,872 INFO L368 BasicCegarLoop]: Found error trace [2018-09-21 18:39:46,873 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] [2018-09-21 18:39:46,876 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-21 18:39:46,882 INFO L82 PathProgramCache]: Analyzing trace with hash 1802458678, now seen corresponding path program 1 times [2018-09-21 18:39:46,887 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-21 18:39:46,888 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 18:39:46,903 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-21 18:39:46,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-21 18:39:46,975 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-21 18:39:46,998 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 18:39:46,998 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-21 18:39:47,013 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-21 18:39:47,014 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-09-21 18:39:47,017 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-09-21 18:39:47,031 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-09-21 18:39:47,032 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-09-21 18:39:47,035 INFO L87 Difference]: Start difference. First operand 45 states. Second operand 2 states. [2018-09-21 18:39:47,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-21 18:39:47,060 INFO L93 Difference]: Finished difference Result 45 states and 52 transitions. [2018-09-21 18:39:47,060 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-09-21 18:39:47,062 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 24 [2018-09-21 18:39:47,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-21 18:39:47,074 INFO L225 Difference]: With dead ends: 45 [2018-09-21 18:39:47,074 INFO L226 Difference]: Without dead ends: 41 [2018-09-21 18:39:47,077 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 23 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 18:39:47,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2018-09-21 18:39:47,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2018-09-21 18:39:47,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-09-21 18:39:47,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 48 transitions. [2018-09-21 18:39:47,128 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 48 transitions. Word has length 24 [2018-09-21 18:39:47,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-21 18:39:47,129 INFO L480 AbstractCegarLoop]: Abstraction has 41 states and 48 transitions. [2018-09-21 18:39:47,129 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-09-21 18:39:47,129 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 48 transitions. [2018-09-21 18:39:47,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2018-09-21 18:39:47,132 INFO L368 BasicCegarLoop]: Found error trace [2018-09-21 18:39:47,132 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] [2018-09-21 18:39:47,133 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-21 18:39:47,133 INFO L82 PathProgramCache]: Analyzing trace with hash -1841206223, now seen corresponding path program 1 times [2018-09-21 18:39:47,134 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-21 18:39:47,135 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) [2018-09-21 18:39:47,142 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2018-09-21 18:39:47,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-21 18:39:47,226 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-21 18:39:47,284 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 18:39:47,285 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-21 18:39:47,298 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-21 18:39:47,299 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-21 18:39:47,301 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-21 18:39:47,301 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-21 18:39:47,301 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-21 18:39:47,301 INFO L87 Difference]: Start difference. First operand 41 states and 48 transitions. Second operand 4 states. [2018-09-21 18:39:47,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-21 18:39:47,393 INFO L93 Difference]: Finished difference Result 44 states and 52 transitions. [2018-09-21 18:39:47,394 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-21 18:39:47,394 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 33 [2018-09-21 18:39:47,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-21 18:39:47,397 INFO L225 Difference]: With dead ends: 44 [2018-09-21 18:39:47,398 INFO L226 Difference]: Without dead ends: 44 [2018-09-21 18:39:47,398 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-21 18:39:47,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2018-09-21 18:39:47,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2018-09-21 18:39:47,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2018-09-21 18:39:47,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 52 transitions. [2018-09-21 18:39:47,410 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 52 transitions. Word has length 33 [2018-09-21 18:39:47,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-21 18:39:47,411 INFO L480 AbstractCegarLoop]: Abstraction has 44 states and 52 transitions. [2018-09-21 18:39:47,411 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-21 18:39:47,411 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 52 transitions. [2018-09-21 18:39:47,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-09-21 18:39:47,413 INFO L368 BasicCegarLoop]: Found error trace [2018-09-21 18:39:47,414 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] [2018-09-21 18:39:47,414 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-21 18:39:47,414 INFO L82 PathProgramCache]: Analyzing trace with hash 1530245693, now seen corresponding path program 1 times [2018-09-21 18:39:47,415 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-21 18:39:47,415 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 18:39:47,425 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-21 18:39:47,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-21 18:39:47,480 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-21 18:39:47,516 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 18:39:47,516 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-21 18:39:47,529 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-21 18:39:47,529 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-21 18:39:47,530 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-21 18:39:47,530 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-21 18:39:47,531 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-21 18:39:47,531 INFO L87 Difference]: Start difference. First operand 44 states and 52 transitions. Second operand 4 states. [2018-09-21 18:39:47,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-21 18:39:47,616 INFO L93 Difference]: Finished difference Result 47 states and 56 transitions. [2018-09-21 18:39:47,616 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-21 18:39:47,617 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 34 [2018-09-21 18:39:47,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-21 18:39:47,619 INFO L225 Difference]: With dead ends: 47 [2018-09-21 18:39:47,619 INFO L226 Difference]: Without dead ends: 47 [2018-09-21 18:39:47,619 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-21 18:39:47,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2018-09-21 18:39:47,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 44. [2018-09-21 18:39:47,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2018-09-21 18:39:47,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 52 transitions. [2018-09-21 18:39:47,629 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 52 transitions. Word has length 34 [2018-09-21 18:39:47,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-21 18:39:47,630 INFO L480 AbstractCegarLoop]: Abstraction has 44 states and 52 transitions. [2018-09-21 18:39:47,630 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-21 18:39:47,630 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 52 transitions. [2018-09-21 18:39:47,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2018-09-21 18:39:47,632 INFO L368 BasicCegarLoop]: Found error trace [2018-09-21 18:39:47,632 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] [2018-09-21 18:39:47,632 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-21 18:39:47,632 INFO L82 PathProgramCache]: Analyzing trace with hash 1792427957, now seen corresponding path program 1 times [2018-09-21 18:39:47,634 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-21 18:39:47,634 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 18:39:47,639 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-21 18:39:47,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-21 18:39:47,711 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-21 18:39:47,837 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 18:39:47,838 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-21 18:39:47,852 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-21 18:39:47,852 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-21 18:39:47,853 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-21 18:39:47,853 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-21 18:39:47,854 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-21 18:39:47,854 INFO L87 Difference]: Start difference. First operand 44 states and 52 transitions. Second operand 4 states. [2018-09-21 18:39:47,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-21 18:39:47,900 INFO L93 Difference]: Finished difference Result 47 states and 56 transitions. [2018-09-21 18:39:47,901 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-21 18:39:47,901 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 35 [2018-09-21 18:39:47,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-21 18:39:47,904 INFO L225 Difference]: With dead ends: 47 [2018-09-21 18:39:47,904 INFO L226 Difference]: Without dead ends: 47 [2018-09-21 18:39:47,904 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-21 18:39:47,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2018-09-21 18:39:47,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 44. [2018-09-21 18:39:47,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2018-09-21 18:39:47,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 52 transitions. [2018-09-21 18:39:47,912 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 52 transitions. Word has length 35 [2018-09-21 18:39:47,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-21 18:39:47,913 INFO L480 AbstractCegarLoop]: Abstraction has 44 states and 52 transitions. [2018-09-21 18:39:47,913 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-21 18:39:47,914 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 52 transitions. [2018-09-21 18:39:47,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-09-21 18:39:47,915 INFO L368 BasicCegarLoop]: Found error trace [2018-09-21 18:39:47,915 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] [2018-09-21 18:39:47,916 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-21 18:39:47,917 INFO L82 PathProgramCache]: Analyzing trace with hash -136871486, now seen corresponding path program 1 times [2018-09-21 18:39:47,917 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-21 18:39:47,917 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 [2018-09-21 18:39:47,923 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-21 18:39:47,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-21 18:39:47,985 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-21 18:39:48,483 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 18:39:48,484 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-21 18:39:48,497 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-21 18:39:48,498 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2018-09-21 18:39:48,498 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-21 18:39:48,498 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-21 18:39:48,499 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2018-09-21 18:39:48,499 INFO L87 Difference]: Start difference. First operand 44 states and 52 transitions. Second operand 9 states. [2018-09-21 18:39:49,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-21 18:39:49,307 INFO L93 Difference]: Finished difference Result 49 states and 57 transitions. [2018-09-21 18:39:49,308 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-09-21 18:39:49,308 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 36 [2018-09-21 18:39:49,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-21 18:39:49,311 INFO L225 Difference]: With dead ends: 49 [2018-09-21 18:39:49,311 INFO L226 Difference]: Without dead ends: 44 [2018-09-21 18:39:49,311 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 28 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 18:39:49,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2018-09-21 18:39:49,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 41. [2018-09-21 18:39:49,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-09-21 18:39:49,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 47 transitions. [2018-09-21 18:39:49,319 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 47 transitions. Word has length 36 [2018-09-21 18:39:49,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-21 18:39:49,320 INFO L480 AbstractCegarLoop]: Abstraction has 41 states and 47 transitions. [2018-09-21 18:39:49,320 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-21 18:39:49,320 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 47 transitions. [2018-09-21 18:39:49,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2018-09-21 18:39:49,322 INFO L368 BasicCegarLoop]: Found error trace [2018-09-21 18:39:49,322 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-21 18:39:49,323 INFO L423 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-21 18:39:49,323 INFO L82 PathProgramCache]: Analyzing trace with hash -2090172777, now seen corresponding path program 1 times [2018-09-21 18:39:49,324 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-21 18:39:49,324 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 [2018-09-21 18:39:49,331 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-21 18:39:49,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-21 18:39:49,395 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-21 18:39:49,459 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2018-09-21 18:39:49,460 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-21 18:39:49,477 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-21 18:39:49,477 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-21 18:39:49,478 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-21 18:39:49,478 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-21 18:39:49,478 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-21 18:39:49,478 INFO L87 Difference]: Start difference. First operand 41 states and 47 transitions. Second operand 4 states. [2018-09-21 18:39:49,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-21 18:39:49,528 INFO L93 Difference]: Finished difference Result 44 states and 51 transitions. [2018-09-21 18:39:49,529 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-21 18:39:49,529 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 49 [2018-09-21 18:39:49,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-21 18:39:49,531 INFO L225 Difference]: With dead ends: 44 [2018-09-21 18:39:49,531 INFO L226 Difference]: Without dead ends: 44 [2018-09-21 18:39:49,533 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-21 18:39:49,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2018-09-21 18:39:49,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2018-09-21 18:39:49,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2018-09-21 18:39:49,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 51 transitions. [2018-09-21 18:39:49,547 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 51 transitions. Word has length 49 [2018-09-21 18:39:49,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-21 18:39:49,548 INFO L480 AbstractCegarLoop]: Abstraction has 44 states and 51 transitions. [2018-09-21 18:39:49,548 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-21 18:39:49,548 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 51 transitions. [2018-09-21 18:39:49,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2018-09-21 18:39:49,553 INFO L368 BasicCegarLoop]: Found error trace [2018-09-21 18:39:49,553 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 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] [2018-09-21 18:39:49,554 INFO L423 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-21 18:39:49,554 INFO L82 PathProgramCache]: Analyzing trace with hash -2037596367, now seen corresponding path program 1 times [2018-09-21 18:39:49,555 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-21 18:39:49,555 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 [2018-09-21 18:39:49,560 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-21 18:39:49,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-21 18:39:49,627 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-21 18:39:49,661 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2018-09-21 18:39:49,661 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-21 18:39:49,673 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-21 18:39:49,673 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-21 18:39:49,674 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-21 18:39:49,674 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-21 18:39:49,674 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-21 18:39:49,674 INFO L87 Difference]: Start difference. First operand 44 states and 51 transitions. Second operand 4 states. [2018-09-21 18:39:49,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-21 18:39:49,702 INFO L93 Difference]: Finished difference Result 47 states and 55 transitions. [2018-09-21 18:39:49,706 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-21 18:39:49,706 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 50 [2018-09-21 18:39:49,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-21 18:39:49,708 INFO L225 Difference]: With dead ends: 47 [2018-09-21 18:39:49,708 INFO L226 Difference]: Without dead ends: 47 [2018-09-21 18:39:49,710 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-21 18:39:49,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2018-09-21 18:39:49,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 44. [2018-09-21 18:39:49,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2018-09-21 18:39:49,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 51 transitions. [2018-09-21 18:39:49,718 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 51 transitions. Word has length 50 [2018-09-21 18:39:49,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-21 18:39:49,718 INFO L480 AbstractCegarLoop]: Abstraction has 44 states and 51 transitions. [2018-09-21 18:39:49,718 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-21 18:39:49,719 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 51 transitions. [2018-09-21 18:39:49,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2018-09-21 18:39:49,721 INFO L368 BasicCegarLoop]: Found error trace [2018-09-21 18:39:49,721 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-21 18:39:49,721 INFO L423 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-21 18:39:49,722 INFO L82 PathProgramCache]: Analyzing trace with hash 191150482, now seen corresponding path program 1 times [2018-09-21 18:39:49,722 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-21 18:39:49,722 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 [2018-09-21 18:39:49,728 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-21 18:39:49,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-21 18:39:49,795 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-21 18:39:49,963 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2018-09-21 18:39:49,964 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-21 18:39:49,976 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-21 18:39:49,976 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-09-21 18:39:49,977 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-21 18:39:49,977 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-21 18:39:49,977 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-09-21 18:39:49,977 INFO L87 Difference]: Start difference. First operand 44 states and 51 transitions. Second operand 5 states. [2018-09-21 18:39:50,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-21 18:39:50,144 INFO L93 Difference]: Finished difference Result 47 states and 53 transitions. [2018-09-21 18:39:50,145 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-09-21 18:39:50,145 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 51 [2018-09-21 18:39:50,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-21 18:39:50,147 INFO L225 Difference]: With dead ends: 47 [2018-09-21 18:39:50,147 INFO L226 Difference]: Without dead ends: 44 [2018-09-21 18:39:50,148 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-09-21 18:39:50,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2018-09-21 18:39:50,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2018-09-21 18:39:50,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2018-09-21 18:39:50,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 50 transitions. [2018-09-21 18:39:50,155 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 50 transitions. Word has length 51 [2018-09-21 18:39:50,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-21 18:39:50,156 INFO L480 AbstractCegarLoop]: Abstraction has 44 states and 50 transitions. [2018-09-21 18:39:50,156 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-21 18:39:50,156 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 50 transitions. [2018-09-21 18:39:50,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2018-09-21 18:39:50,157 INFO L368 BasicCegarLoop]: Found error trace [2018-09-21 18:39:50,159 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-21 18:39:50,159 INFO L423 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-21 18:39:50,159 INFO L82 PathProgramCache]: Analyzing trace with hash 892215060, now seen corresponding path program 1 times [2018-09-21 18:39:50,160 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-21 18:39:50,160 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 [2018-09-21 18:39:50,168 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-21 18:39:50,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-21 18:39:50,228 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-21 18:39:50,519 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2018-09-21 18:39:50,519 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-21 18:39:50,533 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-21 18:39:50,533 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2018-09-21 18:39:50,534 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-09-21 18:39:50,534 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-09-21 18:39:50,538 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2018-09-21 18:39:50,539 INFO L87 Difference]: Start difference. First operand 44 states and 50 transitions. Second operand 10 states. [2018-09-21 18:39:50,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-21 18:39:50,901 INFO L93 Difference]: Finished difference Result 49 states and 55 transitions. [2018-09-21 18:39:50,902 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-09-21 18:39:50,902 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 51 [2018-09-21 18:39:50,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-21 18:39:50,906 INFO L225 Difference]: With dead ends: 49 [2018-09-21 18:39:50,906 INFO L226 Difference]: Without dead ends: 41 [2018-09-21 18:39:50,906 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2018-09-21 18:39:50,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2018-09-21 18:39:50,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2018-09-21 18:39:50,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-09-21 18:39:50,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 45 transitions. [2018-09-21 18:39:50,913 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 45 transitions. Word has length 51 [2018-09-21 18:39:50,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-21 18:39:50,913 INFO L480 AbstractCegarLoop]: Abstraction has 41 states and 45 transitions. [2018-09-21 18:39:50,913 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-09-21 18:39:50,914 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 45 transitions. [2018-09-21 18:39:50,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2018-09-21 18:39:50,916 INFO L368 BasicCegarLoop]: Found error trace [2018-09-21 18:39:50,916 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 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] [2018-09-21 18:39:50,916 INFO L423 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-21 18:39:50,918 INFO L82 PathProgramCache]: Analyzing trace with hash -1581339685, now seen corresponding path program 1 times [2018-09-21 18:39:50,918 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-21 18:39:50,918 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 [2018-09-21 18:39:50,929 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-21 18:39:50,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-21 18:39:50,989 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-21 18:39:51,015 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2018-09-21 18:39:51,015 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-21 18:39:51,026 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-21 18:39:51,026 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-21 18:39:51,026 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-21 18:39:51,027 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-21 18:39:51,027 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-21 18:39:51,027 INFO L87 Difference]: Start difference. First operand 41 states and 45 transitions. Second operand 4 states. [2018-09-21 18:39:51,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-21 18:39:51,045 INFO L93 Difference]: Finished difference Result 44 states and 48 transitions. [2018-09-21 18:39:51,047 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-21 18:39:51,047 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 51 [2018-09-21 18:39:51,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-21 18:39:51,049 INFO L225 Difference]: With dead ends: 44 [2018-09-21 18:39:51,049 INFO L226 Difference]: Without dead ends: 43 [2018-09-21 18:39:51,049 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-21 18:39:51,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2018-09-21 18:39:51,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 41. [2018-09-21 18:39:51,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-09-21 18:39:51,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 45 transitions. [2018-09-21 18:39:51,055 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 45 transitions. Word has length 51 [2018-09-21 18:39:51,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-21 18:39:51,055 INFO L480 AbstractCegarLoop]: Abstraction has 41 states and 45 transitions. [2018-09-21 18:39:51,055 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-21 18:39:51,057 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 45 transitions. [2018-09-21 18:39:51,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2018-09-21 18:39:51,058 INFO L368 BasicCegarLoop]: Found error trace [2018-09-21 18:39:51,058 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 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] [2018-09-21 18:39:51,058 INFO L423 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-21 18:39:51,059 INFO L82 PathProgramCache]: Analyzing trace with hash -1789299466, now seen corresponding path program 1 times [2018-09-21 18:39:51,060 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-21 18:39:51,060 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 [2018-09-21 18:39:51,067 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-21 18:39:51,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-21 18:39:51,136 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-21 18:39:51,324 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2018-09-21 18:39:51,324 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-21 18:39:51,335 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-21 18:39:51,335 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2018-09-21 18:39:51,335 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-21 18:39:51,335 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-21 18:39:51,336 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2018-09-21 18:39:51,336 INFO L87 Difference]: Start difference. First operand 41 states and 45 transitions. Second operand 9 states. [2018-09-21 18:39:51,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-21 18:39:51,667 INFO L93 Difference]: Finished difference Result 39 states and 43 transitions. [2018-09-21 18:39:51,667 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-09-21 18:39:51,667 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 52 [2018-09-21 18:39:51,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-21 18:39:51,668 INFO L225 Difference]: With dead ends: 39 [2018-09-21 18:39:51,668 INFO L226 Difference]: Without dead ends: 0 [2018-09-21 18:39:51,669 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2018-09-21 18:39:51,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-09-21 18:39:51,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-09-21 18:39:51,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-09-21 18:39:51,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-09-21 18:39:51,671 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 52 [2018-09-21 18:39:51,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-21 18:39:51,671 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-09-21 18:39:51,672 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-21 18:39:51,672 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-09-21 18:39:51,672 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-09-21 18:39:51,677 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.09 06:39:51 BoogieIcfgContainer [2018-09-21 18:39:51,677 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-21 18:39:51,678 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-09-21 18:39:51,678 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-09-21 18:39:51,678 INFO L276 PluginConnector]: Witness Printer initialized [2018-09-21 18:39:51,678 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 06:39:46" (3/4) ... [2018-09-21 18:39:51,682 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-09-21 18:39:51,689 INFO L316 RCFGBacktranslator]: Ignoring RootEdge to procedure isnan_float [2018-09-21 18:39:51,689 INFO L316 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-09-21 18:39:51,689 INFO L316 RCFGBacktranslator]: Ignoring RootEdge to procedure fmin_float [2018-09-21 18:39:51,689 INFO L316 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-09-21 18:39:51,690 INFO L316 RCFGBacktranslator]: Ignoring RootEdge to procedure __fpclassify_float [2018-09-21 18:39:51,695 INFO L850 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2018-09-21 18:39:51,695 INFO L850 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2018-09-21 18:39:51,696 INFO L850 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-09-21 18:39:51,754 INFO L145 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2018-09-21 18:39:51,755 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-09-21 18:39:51,756 INFO L168 Benchmark]: Toolchain (without parser) took 6061.38 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 140.0 MB). Free memory was 953.2 MB in the beginning and 847.8 MB in the end (delta: 105.4 MB). Peak memory consumption was 245.4 MB. Max. memory is 11.5 GB. [2018-09-21 18:39:51,758 INFO L168 Benchmark]: CDTParser took 0.21 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 18:39:51,759 INFO L168 Benchmark]: CACSL2BoogieTranslator took 321.75 ms. Allocated memory is still 1.0 GB. Free memory was 953.2 MB in the beginning and 942.5 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-09-21 18:39:51,759 INFO L168 Benchmark]: Boogie Preprocessor took 50.38 ms. Allocated memory is still 1.0 GB. Free memory was 942.5 MB in the beginning and 937.1 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-09-21 18:39:51,760 INFO L168 Benchmark]: RCFGBuilder took 689.78 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 140.0 MB). Free memory was 937.1 MB in the beginning and 1.1 GB in the end (delta: -175.7 MB). Peak memory consumption was 22.1 MB. Max. memory is 11.5 GB. [2018-09-21 18:39:51,762 INFO L168 Benchmark]: TraceAbstraction took 4913.31 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 854.7 MB in the end (delta: 258.1 MB). Peak memory consumption was 258.1 MB. Max. memory is 11.5 GB. [2018-09-21 18:39:51,763 INFO L168 Benchmark]: Witness Printer took 77.26 ms. Allocated memory is still 1.2 GB. Free memory was 854.7 MB in the beginning and 847.8 MB in the end (delta: 6.9 MB). Peak memory consumption was 6.9 MB. Max. memory is 11.5 GB. [2018-09-21 18:39:51,769 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 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 321.75 ms. Allocated memory is still 1.0 GB. Free memory was 953.2 MB in the beginning and 942.5 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 50.38 ms. Allocated memory is still 1.0 GB. Free memory was 942.5 MB in the beginning and 937.1 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 689.78 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 140.0 MB). Free memory was 937.1 MB in the beginning and 1.1 GB in the end (delta: -175.7 MB). Peak memory consumption was 22.1 MB. Max. memory is 11.5 GB. * TraceAbstraction took 4913.31 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 854.7 MB in the end (delta: 258.1 MB). Peak memory consumption was 258.1 MB. Max. memory is 11.5 GB. * Witness Printer took 77.26 ms. Allocated memory is still 1.2 GB. Free memory was 854.7 MB in the beginning and 847.8 MB in the end (delta: 6.9 MB). Peak memory consumption was 6.9 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 59]: 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 6 procedures, 45 locations, 1 error locations. SAFE Result, 4.8s OverallTime, 11 OverallIterations, 2 TraceHistogramMax, 2.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 505 SDtfs, 31 SDslu, 1466 SDs, 0 SdLazy, 204 SolverSat, 10 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 469 GetRequests, 418 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 2.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=45occurred 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: 0.1s AutomataMinimizationTime, 11 MinimizatonAttempts, 14 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 1.5s InterpolantComputationTime, 466 NumberOfCodeBlocks, 466 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 455 ConstructedInterpolants, 3 QuantifiedInterpolants, 32455 SizeOfPredicates, 15 NumberOfNonLiveVariables, 1014 ConjunctsInSsa, 57 ConjunctsInUnsatCore, 11 InterpolantComputations, 11 PerfectInterpolantSequences, 84/84 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...