/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/Ultimate.py --spec ../../../trunk/examples/svcomp/ReachSafety.prp --file ../../../trunk/examples/svcomp/float-newlib/float_req_bl_1252b_false-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_1252b_false-unreach-call.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c8e4dbe5a9ab518912f1108432d43f490ec977d7 --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_1252b_false-unreach-call.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c8e4dbe5a9ab518912f1108432d43f490ec977d7 --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false ....................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.1.23-5eb3fea [2018-09-21 18:41:57,649 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-21 18:41:57,651 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-21 18:41:57,664 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-21 18:41:57,664 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-21 18:41:57,666 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-21 18:41:57,667 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-21 18:41:57,669 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-21 18:41:57,671 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-21 18:41:57,672 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-21 18:41:57,673 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-21 18:41:57,673 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-21 18:41:57,674 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-21 18:41:57,675 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-21 18:41:57,677 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-21 18:41:57,678 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-21 18:41:57,679 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-21 18:41:57,681 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-21 18:41:57,683 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-21 18:41:57,685 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-21 18:41:57,686 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-21 18:41:57,687 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-21 18:41:57,690 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-21 18:41:57,690 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-21 18:41:57,691 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-21 18:41:57,692 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-21 18:41:57,693 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-21 18:41:57,694 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-21 18:41:57,695 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-21 18:41:57,696 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-21 18:41:57,697 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-21 18:41:57,697 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-21 18:41:57,698 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-21 18:41:57,698 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-21 18:41:57,699 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-21 18:41:57,700 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-21 18:41:57,701 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-09-21 18:41:57,722 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-21 18:41:57,722 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-21 18:41:57,723 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-21 18:41:57,724 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-09-21 18:41:57,725 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-09-21 18:41:57,725 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-09-21 18:41:57,725 INFO L133 SettingsManager]: * Use SBE=true [2018-09-21 18:41:57,726 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-21 18:41:57,726 INFO L133 SettingsManager]: * sizeof long=4 [2018-09-21 18:41:57,726 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-21 18:41:57,726 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-09-21 18:41:57,726 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-21 18:41:57,727 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-21 18:41:57,728 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-21 18:41:57,728 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-21 18:41:57,728 INFO L133 SettingsManager]: * sizeof long double=12 [2018-09-21 18:41:57,728 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-21 18:41:57,728 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-21 18:41:57,728 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-21 18:41:57,729 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-21 18:41:57,729 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-21 18:41:57,729 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-21 18:41:57,729 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-21 18:41:57,730 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-21 18:41:57,731 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-21 18:41:57,731 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-21 18:41:57,731 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-09-21 18:41:57,731 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-21 18:41:57,731 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-21 18:41:57,732 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c8e4dbe5a9ab518912f1108432d43f490ec977d7 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 18:41:57,812 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-21 18:41:57,834 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-21 18:41:57,839 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-21 18:41:57,840 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-21 18:41:57,841 INFO L276 PluginConnector]: CDTParser initialized [2018-09-21 18:41:57,841 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1252b_false-unreach-call.c [2018-09-21 18:41:58,226 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/12ae497fb/822e43ffbe73411d8f6f3e9db9e2827f/FLAGdfbe79c32 [2018-09-21 18:41:58,406 INFO L277 CDTParser]: Found 1 translation units. [2018-09-21 18:41:58,407 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/float_req_bl_1252b_false-unreach-call.c [2018-09-21 18:41:58,415 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/12ae497fb/822e43ffbe73411d8f6f3e9db9e2827f/FLAGdfbe79c32 [2018-09-21 18:41:58,433 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/12ae497fb/822e43ffbe73411d8f6f3e9db9e2827f [2018-09-21 18:41:58,437 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-21 18:41:58,440 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-21 18:41:58,441 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-21 18:41:58,442 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-21 18:41:58,450 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-21 18:41:58,451 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 06:41:58" (1/1) ... [2018-09-21 18:41:58,454 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@53a0a11e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:41:58, skipping insertion in model container [2018-09-21 18:41:58,454 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 06:41:58" (1/1) ... [2018-09-21 18:41:58,466 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-21 18:41:58,682 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-21 18:41:58,701 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-21 18:41:58,717 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-21 18:41:58,745 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:41:58 WrapperNode [2018-09-21 18:41:58,745 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-21 18:41:58,746 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-21 18:41:58,746 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-21 18:41:58,746 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-21 18:41:58,764 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:41:58" (1/1) ... [2018-09-21 18:41:58,764 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:41:58" (1/1) ... [2018-09-21 18:41:58,776 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:41:58" (1/1) ... [2018-09-21 18:41:58,776 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:41:58" (1/1) ... [2018-09-21 18:41:58,784 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:41:58" (1/1) ... [2018-09-21 18:41:58,790 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:41:58" (1/1) ... [2018-09-21 18:41:58,792 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:41:58" (1/1) ... [2018-09-21 18:41:58,795 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-21 18:41:58,796 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-21 18:41:58,796 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-21 18:41:58,796 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-21 18:41:58,797 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:41:58" (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 18:41:58,873 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-21 18:41:58,873 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-21 18:41:58,873 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_float [2018-09-21 18:41:58,873 INFO L138 BoogieDeclarations]: Found implementation of procedure fmax_float [2018-09-21 18:41:58,874 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_float [2018-09-21 18:41:58,874 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-21 18:41:58,874 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-09-21 18:41:58,874 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2018-09-21 18:41:58,874 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_float [2018-09-21 18:41:58,874 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-09-21 18:41:58,874 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2018-09-21 18:41:58,875 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-09-21 18:41:58,875 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-09-21 18:41:58,875 INFO L130 BoogieDeclarations]: Found specification of procedure fmax_float [2018-09-21 18:41:58,875 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_float [2018-09-21 18:41:58,875 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-21 18:41:58,877 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-21 18:41:58,877 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-21 18:41:58,877 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~real [2018-09-21 18:41:58,878 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2018-09-21 18:41:58,878 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2018-09-21 18:41:58,878 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-09-21 18:41:59,583 INFO L373 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-21 18:41:59,583 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 06:41:59 BoogieIcfgContainer [2018-09-21 18:41:59,583 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-21 18:41:59,584 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-21 18:41:59,585 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-21 18:41:59,588 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-21 18:41:59,588 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 06:41:58" (1/3) ... [2018-09-21 18:41:59,589 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f3e1207 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 06:41:59, skipping insertion in model container [2018-09-21 18:41:59,589 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:41:58" (2/3) ... [2018-09-21 18:41:59,590 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f3e1207 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 06:41:59, skipping insertion in model container [2018-09-21 18:41:59,590 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 06:41:59" (3/3) ... [2018-09-21 18:41:59,592 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_1252b_false-unreach-call.c [2018-09-21 18:41:59,602 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-21 18:41:59,611 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-21 18:41:59,654 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-21 18:41:59,655 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-21 18:41:59,655 INFO L382 AbstractCegarLoop]: Hoare is false [2018-09-21 18:41:59,655 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-21 18:41:59,655 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-21 18:41:59,655 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-21 18:41:59,655 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-21 18:41:59,655 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-21 18:41:59,656 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-21 18:41:59,672 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states. [2018-09-21 18:41:59,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-09-21 18:41:59,684 INFO L368 BasicCegarLoop]: Found error trace [2018-09-21 18:41:59,686 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-21 18:41:59,688 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-21 18:41:59,694 INFO L82 PathProgramCache]: Analyzing trace with hash -678868765, now seen corresponding path program 1 times [2018-09-21 18:41:59,696 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-21 18:41:59,698 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-21 18:41:59,747 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-21 18:41:59,748 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-21 18:41:59,748 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-21 18:41:59,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-21 18:41:59,849 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 18:41:59,854 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-21 18:41:59,855 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-09-21 18:41:59,859 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-09-21 18:41:59,872 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-09-21 18:41:59,872 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-09-21 18:41:59,875 INFO L87 Difference]: Start difference. First operand 60 states. Second operand 2 states. [2018-09-21 18:41:59,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-21 18:41:59,898 INFO L93 Difference]: Finished difference Result 60 states and 68 transitions. [2018-09-21 18:41:59,898 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-09-21 18:41:59,900 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 22 [2018-09-21 18:41:59,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-21 18:41:59,909 INFO L225 Difference]: With dead ends: 60 [2018-09-21 18:41:59,909 INFO L226 Difference]: Without dead ends: 56 [2018-09-21 18:41:59,911 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 18:41:59,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2018-09-21 18:41:59,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2018-09-21 18:41:59,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2018-09-21 18:41:59,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 64 transitions. [2018-09-21 18:41:59,959 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 64 transitions. Word has length 22 [2018-09-21 18:41:59,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-21 18:41:59,959 INFO L480 AbstractCegarLoop]: Abstraction has 56 states and 64 transitions. [2018-09-21 18:41:59,959 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-09-21 18:41:59,960 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 64 transitions. [2018-09-21 18:41:59,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-09-21 18:41:59,962 INFO L368 BasicCegarLoop]: Found error trace [2018-09-21 18:41:59,962 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-21 18:41:59,963 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-21 18:41:59,963 INFO L82 PathProgramCache]: Analyzing trace with hash -232558112, now seen corresponding path program 1 times [2018-09-21 18:41:59,963 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-21 18:41:59,963 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-21 18:41:59,964 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-21 18:41:59,964 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-21 18:41:59,965 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-21 18:41:59,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-21 18:42:00,103 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 18:42:00,104 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-21 18:42:00,104 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-21 18:42:00,106 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-21 18:42:00,106 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-21 18:42:00,107 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-21 18:42:00,107 INFO L87 Difference]: Start difference. First operand 56 states and 64 transitions. Second operand 4 states. [2018-09-21 18:42:00,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-21 18:42:00,197 INFO L93 Difference]: Finished difference Result 60 states and 69 transitions. [2018-09-21 18:42:00,198 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-21 18:42:00,198 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 31 [2018-09-21 18:42:00,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-21 18:42:00,204 INFO L225 Difference]: With dead ends: 60 [2018-09-21 18:42:00,205 INFO L226 Difference]: Without dead ends: 60 [2018-09-21 18:42:00,206 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 18:42:00,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2018-09-21 18:42:00,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2018-09-21 18:42:00,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2018-09-21 18:42:00,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 69 transitions. [2018-09-21 18:42:00,219 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 69 transitions. Word has length 31 [2018-09-21 18:42:00,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-21 18:42:00,219 INFO L480 AbstractCegarLoop]: Abstraction has 60 states and 69 transitions. [2018-09-21 18:42:00,219 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-21 18:42:00,219 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 69 transitions. [2018-09-21 18:42:00,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-09-21 18:42:00,222 INFO L368 BasicCegarLoop]: Found error trace [2018-09-21 18:42:00,222 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 18:42:00,222 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-21 18:42:00,223 INFO L82 PathProgramCache]: Analyzing trace with hash 1859597870, now seen corresponding path program 1 times [2018-09-21 18:42:00,223 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-21 18:42:00,223 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-21 18:42:00,225 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-21 18:42:00,225 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-21 18:42:00,225 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-21 18:42:00,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-21 18:42:00,320 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 18:42:00,320 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-21 18:42:00,320 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-21 18:42:00,321 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-21 18:42:00,321 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-21 18:42:00,321 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-21 18:42:00,322 INFO L87 Difference]: Start difference. First operand 60 states and 69 transitions. Second operand 4 states. [2018-09-21 18:42:00,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-21 18:42:00,437 INFO L93 Difference]: Finished difference Result 64 states and 74 transitions. [2018-09-21 18:42:00,439 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-21 18:42:00,439 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 34 [2018-09-21 18:42:00,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-21 18:42:00,441 INFO L225 Difference]: With dead ends: 64 [2018-09-21 18:42:00,442 INFO L226 Difference]: Without dead ends: 64 [2018-09-21 18:42:00,442 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 18:42:00,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2018-09-21 18:42:00,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 60. [2018-09-21 18:42:00,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2018-09-21 18:42:00,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 69 transitions. [2018-09-21 18:42:00,456 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 69 transitions. Word has length 34 [2018-09-21 18:42:00,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-21 18:42:00,456 INFO L480 AbstractCegarLoop]: Abstraction has 60 states and 69 transitions. [2018-09-21 18:42:00,456 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-21 18:42:00,457 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 69 transitions. [2018-09-21 18:42:00,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-09-21 18:42:00,458 INFO L368 BasicCegarLoop]: Found error trace [2018-09-21 18:42:00,458 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 18:42:00,460 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-21 18:42:00,461 INFO L82 PathProgramCache]: Analyzing trace with hash 62646511, now seen corresponding path program 1 times [2018-09-21 18:42:00,461 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-21 18:42:00,461 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-21 18:42:00,462 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-21 18:42:00,462 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-21 18:42:00,462 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-21 18:42:00,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-09-21 18:42:00,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-09-21 18:42:00,592 INFO L443 BasicCegarLoop]: Counterexample might be feasible [2018-09-21 18:42:00,623 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.09 06:42:00 BoogieIcfgContainer [2018-09-21 18:42:00,624 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-21 18:42:00,624 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-09-21 18:42:00,624 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-09-21 18:42:00,625 INFO L276 PluginConnector]: Witness Printer initialized [2018-09-21 18:42:00,625 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 06:41:59" (3/4) ... [2018-09-21 18:42:00,630 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-09-21 18:42:00,630 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-09-21 18:42:00,631 INFO L168 Benchmark]: Toolchain (without parser) took 2193.21 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 147.3 MB). Free memory was 950.5 MB in the beginning and 1.1 GB in the end (delta: -113.8 MB). Peak memory consumption was 33.5 MB. Max. memory is 11.5 GB. [2018-09-21 18:42:00,633 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-09-21 18:42:00,633 INFO L168 Benchmark]: CACSL2BoogieTranslator took 304.23 ms. Allocated memory is still 1.0 GB. Free memory was 950.5 MB in the beginning and 939.8 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-09-21 18:42:00,634 INFO L168 Benchmark]: Boogie Preprocessor took 49.41 ms. Allocated memory is still 1.0 GB. Free memory is still 939.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-09-21 18:42:00,635 INFO L168 Benchmark]: RCFGBuilder took 787.50 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 147.3 MB). Free memory was 939.8 MB in the beginning and 1.1 GB in the end (delta: -174.2 MB). Peak memory consumption was 27.2 MB. Max. memory is 11.5 GB. [2018-09-21 18:42:00,636 INFO L168 Benchmark]: TraceAbstraction took 1039.17 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: 42.5 MB). Peak memory consumption was 42.5 MB. Max. memory is 11.5 GB. [2018-09-21 18:42:00,637 INFO L168 Benchmark]: Witness Printer took 5.63 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 18:42:00,641 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 304.23 ms. Allocated memory is still 1.0 GB. Free memory was 950.5 MB in the beginning and 939.8 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 49.41 ms. Allocated memory is still 1.0 GB. Free memory is still 939.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 787.50 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 147.3 MB). Free memory was 939.8 MB in the beginning and 1.1 GB in the end (delta: -174.2 MB). Peak memory consumption was 27.2 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1039.17 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: 42.5 MB). Peak memory consumption was 42.5 MB. Max. memory is 11.5 GB. * Witness Printer took 5.63 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 79]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 78, overapproximation of someUnaryFLOAToperation at line 74. Possible FailurePath: [L73] float x = 0.0f; [L74] float y = -0.0f; VAL [x=0] [L75] CALL, EXPR fmax_float(x, y) VAL [\old(x)=0, \old(y)=4286578690] [L44] CALL, EXPR __fpclassify_float(x) VAL [\old(x)=0] [L21] __uint32_t w; VAL [\old(x)=0, x=0] [L24] FCALL ieee_float_shape_type gf_u; VAL [\old(x)=0, gf_u={4286578694:0}, x=0] [L25] FCALL gf_u.value = (x) VAL [\old(x)=0, gf_u={4286578694:0}, x=0] [L26] EXPR, FCALL gf_u.word VAL [\old(x)=0, gf_u={4286578694:0}, gf_u.word=4286578689, x=0] [L26] (w) = gf_u.word VAL [\old(x)=0, gf_u={4286578694:0}, gf_u.word=4286578689, w=4286578689, x=0] [L26] FCALL (w) = gf_u.word VAL [(w) = gf_u.word=4286578692, \old(x)=0, gf_u={4286578694:0}, gf_u.word=4286578689, w=4286578689, x=0] [L27] COND FALSE !(0) VAL [\old(x)=0, w=4286578689, x=0] [L29] COND FALSE !(w == 0x00000000 || w == 0x80000000) VAL [\old(x)=0, w=4286578689, x=0] [L31-L32] COND FALSE !((w >= 0x00800000 && w <= 0x7f7fffff) || (w >= 0x80800000 && w <= 0xff7fffff)) VAL [\old(x)=0, w=4286578689, x=0] [L34-L35] COND FALSE !((w >= 0x00000001 && w <= 0x007fffff) || (w >= 0x80000001 && w <= 0x807fffff)) VAL [\old(x)=0, w=4286578689, x=0] [L37] COND FALSE !(w == 0x7f800000 || w == 0xff800000) [L40] RET return 0; VAL [\old(x)=0, \result=0, w=4286578689, x=0] [L44] EXPR __fpclassify_float(x) VAL [\old(x)=0, \old(y)=4286578690, __fpclassify_float(x)=0, x=0, y=4286578690] [L44] COND TRUE __fpclassify_float(x) == 0 [L45] RET return y; VAL [\old(x)=0, \old(y)=4286578690, \result=4286578690, x=0, y=4286578690] [L75] EXPR fmax_float(x, y) VAL [fmax_float(x, y)=4286578690, x=0, y=4286578690] [L75] float res = fmax_float(x, y); [L78] EXPR res == 0.0f && __signbit_float(res) == 0 VAL [res=4286578690, res == 0.0f && __signbit_float(res) == 0=0, x=0, y=4286578690] [L78] COND FALSE, EXPR !(res == 0.0f && __signbit_float(res) == 0) VAL [res=4286578690, res == 0.0f && __signbit_float(res) == 0=0, x=0, y=4286578690] [L78] COND TRUE !(res == 0.0f && __signbit_float(res) == 0) [L79] __VERIFIER_error() VAL [res=4286578690, x=0, y=4286578690] - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 60 locations, 1 error locations. UNSAFE Result, 0.9s OverallTime, 4 OverallIterations, 1 TraceHistogramMax, 0.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 197 SDtfs, 0 SDslu, 242 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=60occurred 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, 121 NumberOfCodeBlocks, 121 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 84 ConstructedInterpolants, 0 QuantifiedInterpolants, 2934 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 18:42:03,017 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-21 18:42:03,019 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-21 18:42:03,031 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-21 18:42:03,032 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-21 18:42:03,033 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-21 18:42:03,034 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-21 18:42:03,036 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-21 18:42:03,038 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-21 18:42:03,039 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-21 18:42:03,040 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-21 18:42:03,040 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-21 18:42:03,041 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-21 18:42:03,042 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-21 18:42:03,044 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-21 18:42:03,045 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-21 18:42:03,046 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-21 18:42:03,048 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-21 18:42:03,050 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-21 18:42:03,052 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-21 18:42:03,054 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-21 18:42:03,055 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-21 18:42:03,058 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-21 18:42:03,058 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-21 18:42:03,058 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-21 18:42:03,059 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-21 18:42:03,060 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-21 18:42:03,061 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-21 18:42:03,062 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-21 18:42:03,064 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-21 18:42:03,064 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-21 18:42:03,065 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-21 18:42:03,065 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-21 18:42:03,065 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-21 18:42:03,066 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-21 18:42:03,067 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-21 18:42:03,067 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2018-09-21 18:42:03,083 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-21 18:42:03,084 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-21 18:42:03,085 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-21 18:42:03,085 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-09-21 18:42:03,086 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-09-21 18:42:03,086 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-09-21 18:42:03,086 INFO L133 SettingsManager]: * Use SBE=true [2018-09-21 18:42:03,087 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-21 18:42:03,087 INFO L133 SettingsManager]: * sizeof long=4 [2018-09-21 18:42:03,087 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-09-21 18:42:03,087 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-21 18:42:03,087 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-21 18:42:03,088 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-21 18:42:03,088 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-21 18:42:03,088 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-09-21 18:42:03,089 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-09-21 18:42:03,089 INFO L133 SettingsManager]: * sizeof long double=12 [2018-09-21 18:42:03,089 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-21 18:42:03,089 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-21 18:42:03,089 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-21 18:42:03,090 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-21 18:42:03,090 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-21 18:42:03,090 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-21 18:42:03,090 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-21 18:42:03,092 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-21 18:42:03,092 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-21 18:42:03,092 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-21 18:42:03,093 INFO L133 SettingsManager]: * Trace refinement strategy=WOLF [2018-09-21 18:42:03,093 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-21 18:42:03,093 INFO L133 SettingsManager]: * Command for external solver=cvc4nyu --tear-down-incremental --rewrite-divk --print-success --lang smt [2018-09-21 18:42:03,093 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-09-21 18:42:03,093 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c8e4dbe5a9ab518912f1108432d43f490ec977d7 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 18:42:03,146 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-21 18:42:03,159 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-21 18:42:03,164 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-21 18:42:03,166 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-21 18:42:03,166 INFO L276 PluginConnector]: CDTParser initialized [2018-09-21 18:42:03,167 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1252b_false-unreach-call.c [2018-09-21 18:42:03,553 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a981bceda/cefa4bce23dc4ca3b2ed7966987eacfe/FLAGaf91307fe [2018-09-21 18:42:03,712 INFO L277 CDTParser]: Found 1 translation units. [2018-09-21 18:42:03,713 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/float_req_bl_1252b_false-unreach-call.c [2018-09-21 18:42:03,720 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a981bceda/cefa4bce23dc4ca3b2ed7966987eacfe/FLAGaf91307fe [2018-09-21 18:42:03,745 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a981bceda/cefa4bce23dc4ca3b2ed7966987eacfe [2018-09-21 18:42:03,751 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-21 18:42:03,757 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-21 18:42:03,761 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-21 18:42:03,762 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-21 18:42:03,769 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-21 18:42:03,770 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 06:42:03" (1/1) ... [2018-09-21 18:42:03,774 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@24c39906 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:42:03, skipping insertion in model container [2018-09-21 18:42:03,775 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 06:42:03" (1/1) ... [2018-09-21 18:42:03,788 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-21 18:42:04,077 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-21 18:42:04,098 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-21 18:42:04,121 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-21 18:42:04,175 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:42:04 WrapperNode [2018-09-21 18:42:04,175 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-21 18:42:04,176 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-21 18:42:04,176 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-21 18:42:04,177 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-21 18:42:04,192 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:42:04" (1/1) ... [2018-09-21 18:42:04,193 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:42:04" (1/1) ... [2018-09-21 18:42:04,208 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:42:04" (1/1) ... [2018-09-21 18:42:04,215 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:42:04" (1/1) ... [2018-09-21 18:42:04,229 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:42:04" (1/1) ... [2018-09-21 18:42:04,234 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:42:04" (1/1) ... [2018-09-21 18:42:04,237 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:42:04" (1/1) ... [2018-09-21 18:42:04,241 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-21 18:42:04,241 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-21 18:42:04,242 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-21 18:42:04,242 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-21 18:42:04,243 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:42:04" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-21 18:42:04,321 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-21 18:42:04,321 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-21 18:42:04,322 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_float [2018-09-21 18:42:04,322 INFO L138 BoogieDeclarations]: Found implementation of procedure fmax_float [2018-09-21 18:42:04,322 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_float [2018-09-21 18:42:04,322 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-21 18:42:04,322 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-09-21 18:42:04,322 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2018-09-21 18:42:04,323 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_float [2018-09-21 18:42:04,323 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-09-21 18:42:04,323 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2018-09-21 18:42:04,323 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2018-09-21 18:42:04,323 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-09-21 18:42:04,323 INFO L130 BoogieDeclarations]: Found specification of procedure fmax_float [2018-09-21 18:42:04,323 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_float [2018-09-21 18:42:04,323 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-21 18:42:04,324 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-21 18:42:04,324 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-21 18:42:04,324 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2018-09-21 18:42:04,324 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2018-09-21 18:42:04,326 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intFLOATTYPE4 [2018-09-21 18:42:04,327 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2018-09-21 18:42:04,863 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-21 18:42:04,880 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-21 18:42:04,954 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-21 18:42:04,974 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-21 18:42:04,986 INFO L373 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-21 18:42:04,987 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 06:42:04 BoogieIcfgContainer [2018-09-21 18:42:04,987 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-21 18:42:04,988 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-21 18:42:04,988 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-21 18:42:04,992 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-21 18:42:04,993 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 06:42:03" (1/3) ... [2018-09-21 18:42:04,994 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39e20c27 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 06:42:04, skipping insertion in model container [2018-09-21 18:42:04,994 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:42:04" (2/3) ... [2018-09-21 18:42:04,994 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39e20c27 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 06:42:04, skipping insertion in model container [2018-09-21 18:42:04,995 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 06:42:04" (3/3) ... [2018-09-21 18:42:04,998 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_1252b_false-unreach-call.c [2018-09-21 18:42:05,008 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-21 18:42:05,018 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-21 18:42:05,062 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-21 18:42:05,063 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-21 18:42:05,064 INFO L382 AbstractCegarLoop]: Hoare is false [2018-09-21 18:42:05,064 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-21 18:42:05,064 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-21 18:42:05,064 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-21 18:42:05,064 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-21 18:42:05,065 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-21 18:42:05,065 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-21 18:42:05,083 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states. [2018-09-21 18:42:05,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-09-21 18:42:05,095 INFO L368 BasicCegarLoop]: Found error trace [2018-09-21 18:42:05,097 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-21 18:42:05,099 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-21 18:42:05,105 INFO L82 PathProgramCache]: Analyzing trace with hash 552591758, now seen corresponding path program 1 times [2018-09-21 18:42:05,111 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-21 18:42:05,111 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) [2018-09-21 18:42:05,125 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2018-09-21 18:42:05,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-21 18:42:05,201 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-21 18:42:05,220 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 18:42:05,220 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-21 18:42:05,233 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-21 18:42:05,234 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-09-21 18:42:05,238 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-09-21 18:42:05,251 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-09-21 18:42:05,251 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-09-21 18:42:05,254 INFO L87 Difference]: Start difference. First operand 58 states. Second operand 2 states. [2018-09-21 18:42:05,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-21 18:42:05,276 INFO L93 Difference]: Finished difference Result 58 states and 66 transitions. [2018-09-21 18:42:05,277 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-09-21 18:42:05,278 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 21 [2018-09-21 18:42:05,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-21 18:42:05,289 INFO L225 Difference]: With dead ends: 58 [2018-09-21 18:42:05,289 INFO L226 Difference]: Without dead ends: 54 [2018-09-21 18:42:05,292 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-09-21 18:42:05,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2018-09-21 18:42:05,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2018-09-21 18:42:05,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2018-09-21 18:42:05,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 62 transitions. [2018-09-21 18:42:05,343 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 62 transitions. Word has length 21 [2018-09-21 18:42:05,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-21 18:42:05,343 INFO L480 AbstractCegarLoop]: Abstraction has 54 states and 62 transitions. [2018-09-21 18:42:05,343 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-09-21 18:42:05,343 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 62 transitions. [2018-09-21 18:42:05,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-09-21 18:42:05,346 INFO L368 BasicCegarLoop]: Found error trace [2018-09-21 18:42:05,346 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-21 18:42:05,346 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-21 18:42:05,347 INFO L82 PathProgramCache]: Analyzing trace with hash 876629051, now seen corresponding path program 1 times [2018-09-21 18:42:05,347 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-21 18:42:05,347 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 18:42:05,359 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 18:42:05,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-21 18:42:05,415 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-21 18:42:05,535 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 18:42:05,535 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-21 18:42:05,548 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-21 18:42:05,548 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-21 18:42:05,550 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-21 18:42:05,550 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-21 18:42:05,550 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-21 18:42:05,551 INFO L87 Difference]: Start difference. First operand 54 states and 62 transitions. Second operand 4 states. [2018-09-21 18:42:05,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-21 18:42:05,661 INFO L93 Difference]: Finished difference Result 57 states and 66 transitions. [2018-09-21 18:42:05,662 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-21 18:42:05,662 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 30 [2018-09-21 18:42:05,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-21 18:42:05,667 INFO L225 Difference]: With dead ends: 57 [2018-09-21 18:42:05,667 INFO L226 Difference]: Without dead ends: 57 [2018-09-21 18:42:05,668 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 27 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 18:42:05,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2018-09-21 18:42:05,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2018-09-21 18:42:05,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2018-09-21 18:42:05,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 66 transitions. [2018-09-21 18:42:05,682 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 66 transitions. Word has length 30 [2018-09-21 18:42:05,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-21 18:42:05,682 INFO L480 AbstractCegarLoop]: Abstraction has 57 states and 66 transitions. [2018-09-21 18:42:05,683 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-21 18:42:05,683 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 66 transitions. [2018-09-21 18:42:05,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-09-21 18:42:05,685 INFO L368 BasicCegarLoop]: Found error trace [2018-09-21 18:42:05,685 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-21 18:42:05,686 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-21 18:42:05,686 INFO L82 PathProgramCache]: Analyzing trace with hash 2005374951, now seen corresponding path program 1 times [2018-09-21 18:42:05,687 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-21 18:42:05,687 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) [2018-09-21 18:42:05,694 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2018-09-21 18:42:05,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-21 18:42:05,755 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-21 18:42:05,945 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 8 [2018-09-21 18:42:05,952 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2018-09-21 18:42:05,953 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-21 18:42:05,982 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-21 18:42:06,011 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-09-21 18:42:06,011 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:21, output treesize:21 [2018-09-21 18:42:06,079 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2018-09-21 18:42:06,085 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2018-09-21 18:42:06,086 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-21 18:42:06,089 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-21 18:42:06,113 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-09-21 18:42:06,114 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:29, output treesize:9 [2018-09-21 18:42:06,664 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 18:42:06,664 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-21 18:42:06,679 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-21 18:42:06,680 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2018-09-21 18:42:06,680 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-09-21 18:42:06,681 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-09-21 18:42:06,681 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2018-09-21 18:42:06,682 INFO L87 Difference]: Start difference. First operand 57 states and 66 transitions. Second operand 10 states. [2018-09-21 18:42:08,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-21 18:42:08,308 INFO L93 Difference]: Finished difference Result 63 states and 75 transitions. [2018-09-21 18:42:08,309 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-09-21 18:42:08,309 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 31 [2018-09-21 18:42:08,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-21 18:42:08,311 INFO L225 Difference]: With dead ends: 63 [2018-09-21 18:42:08,311 INFO L226 Difference]: Without dead ends: 56 [2018-09-21 18:42:08,313 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=57, Invalid=215, Unknown=0, NotChecked=0, Total=272 [2018-09-21 18:42:08,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2018-09-21 18:42:08,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2018-09-21 18:42:08,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2018-09-21 18:42:08,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 63 transitions. [2018-09-21 18:42:08,324 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 63 transitions. Word has length 31 [2018-09-21 18:42:08,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-21 18:42:08,324 INFO L480 AbstractCegarLoop]: Abstraction has 56 states and 63 transitions. [2018-09-21 18:42:08,324 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-09-21 18:42:08,324 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 63 transitions. [2018-09-21 18:42:08,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2018-09-21 18:42:08,327 INFO L368 BasicCegarLoop]: Found error trace [2018-09-21 18:42:08,327 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] [2018-09-21 18:42:08,327 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-21 18:42:08,328 INFO L82 PathProgramCache]: Analyzing trace with hash -1989940013, now seen corresponding path program 1 times [2018-09-21 18:42:08,328 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-21 18:42:08,328 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 18:42:08,342 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-21 18:42:08,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-21 18:42:08,401 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-21 18:42:08,433 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 18:42:08,433 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-21 18:42:08,448 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-21 18:42:08,449 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-21 18:42:08,449 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-21 18:42:08,449 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-21 18:42:08,450 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-21 18:42:08,450 INFO L87 Difference]: Start difference. First operand 56 states and 63 transitions. Second operand 4 states. [2018-09-21 18:42:08,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-21 18:42:08,486 INFO L93 Difference]: Finished difference Result 57 states and 64 transitions. [2018-09-21 18:42:08,487 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-21 18:42:08,487 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 46 [2018-09-21 18:42:08,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-21 18:42:08,490 INFO L225 Difference]: With dead ends: 57 [2018-09-21 18:42:08,490 INFO L226 Difference]: Without dead ends: 57 [2018-09-21 18:42:08,490 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 43 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 18:42:08,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2018-09-21 18:42:08,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2018-09-21 18:42:08,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2018-09-21 18:42:08,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 64 transitions. [2018-09-21 18:42:08,498 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 64 transitions. Word has length 46 [2018-09-21 18:42:08,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-21 18:42:08,498 INFO L480 AbstractCegarLoop]: Abstraction has 57 states and 64 transitions. [2018-09-21 18:42:08,498 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-21 18:42:08,499 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 64 transitions. [2018-09-21 18:42:08,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2018-09-21 18:42:08,501 INFO L368 BasicCegarLoop]: Found error trace [2018-09-21 18:42:08,501 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] [2018-09-21 18:42:08,501 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-21 18:42:08,502 INFO L82 PathProgramCache]: Analyzing trace with hash 1865076213, now seen corresponding path program 1 times [2018-09-21 18:42:08,502 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-21 18:42:08,502 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 18:42:08,508 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-21 18:42:08,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-21 18:42:08,566 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-21 18:42:08,610 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 8 [2018-09-21 18:42:08,619 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2018-09-21 18:42:08,621 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-21 18:42:08,629 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-21 18:42:08,640 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-09-21 18:42:08,641 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:21, output treesize:21 [2018-09-21 18:42:08,668 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2018-09-21 18:42:08,676 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2018-09-21 18:42:08,677 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-21 18:42:08,682 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-21 18:42:08,685 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-09-21 18:42:08,686 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:29, output treesize:9 [2018-09-21 18:42:08,871 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-09-21 18:42:08,872 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-21 18:42:08,886 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-21 18:42:08,886 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2018-09-21 18:42:08,887 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-09-21 18:42:08,887 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-09-21 18:42:08,887 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2018-09-21 18:42:08,890 INFO L87 Difference]: Start difference. First operand 57 states and 64 transitions. Second operand 10 states. [2018-09-21 18:42:09,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-21 18:42:09,825 INFO L93 Difference]: Finished difference Result 61 states and 68 transitions. [2018-09-21 18:42:09,826 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-09-21 18:42:09,826 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 47 [2018-09-21 18:42:09,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-21 18:42:09,832 INFO L225 Difference]: With dead ends: 61 [2018-09-21 18:42:09,832 INFO L226 Difference]: Without dead ends: 51 [2018-09-21 18:42:09,833 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=57, Invalid=215, Unknown=0, NotChecked=0, Total=272 [2018-09-21 18:42:09,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2018-09-21 18:42:09,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2018-09-21 18:42:09,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2018-09-21 18:42:09,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 53 transitions. [2018-09-21 18:42:09,839 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 53 transitions. Word has length 47 [2018-09-21 18:42:09,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-21 18:42:09,840 INFO L480 AbstractCegarLoop]: Abstraction has 51 states and 53 transitions. [2018-09-21 18:42:09,841 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-09-21 18:42:09,841 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 53 transitions. [2018-09-21 18:42:09,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2018-09-21 18:42:09,842 INFO L368 BasicCegarLoop]: Found error trace [2018-09-21 18:42:09,842 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] [2018-09-21 18:42:09,843 INFO L423 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-21 18:42:09,844 INFO L82 PathProgramCache]: Analyzing trace with hash -1338435274, now seen corresponding path program 1 times [2018-09-21 18:42:09,844 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-21 18:42:09,844 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 18:42:09,848 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-21 18:42:09,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-21 18:42:09,913 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-21 18:42:10,013 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 18:42:10,013 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-21 18:42:10,025 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-21 18:42:10,025 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-09-21 18:42:10,026 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-09-21 18:42:10,026 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-09-21 18:42:10,026 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-09-21 18:42:10,026 INFO L87 Difference]: Start difference. First operand 51 states and 53 transitions. Second operand 8 states. [2018-09-21 18:42:10,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-21 18:42:10,451 INFO L93 Difference]: Finished difference Result 56 states and 58 transitions. [2018-09-21 18:42:10,452 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-09-21 18:42:10,453 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 48 [2018-09-21 18:42:10,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-21 18:42:10,455 INFO L225 Difference]: With dead ends: 56 [2018-09-21 18:42:10,455 INFO L226 Difference]: Without dead ends: 56 [2018-09-21 18:42:10,456 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2018-09-21 18:42:10,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2018-09-21 18:42:10,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2018-09-21 18:42:10,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2018-09-21 18:42:10,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 58 transitions. [2018-09-21 18:42:10,463 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 58 transitions. Word has length 48 [2018-09-21 18:42:10,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-21 18:42:10,463 INFO L480 AbstractCegarLoop]: Abstraction has 56 states and 58 transitions. [2018-09-21 18:42:10,464 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-09-21 18:42:10,464 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 58 transitions. [2018-09-21 18:42:10,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2018-09-21 18:42:10,466 INFO L368 BasicCegarLoop]: Found error trace [2018-09-21 18:42:10,466 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] [2018-09-21 18:42:10,466 INFO L423 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-21 18:42:10,466 INFO L82 PathProgramCache]: Analyzing trace with hash -529088648, now seen corresponding path program 1 times [2018-09-21 18:42:10,468 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-21 18:42:10,468 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 18:42:10,475 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-21 18:42:10,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-21 18:42:10,546 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-21 18:42:10,664 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 18:42:10,664 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-21 18:42:10,676 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-21 18:42:10,676 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-09-21 18:42:10,677 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-21 18:42:10,677 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-21 18:42:10,677 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-09-21 18:42:10,677 INFO L87 Difference]: Start difference. First operand 56 states and 58 transitions. Second operand 5 states. [2018-09-21 18:42:10,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-21 18:42:10,763 INFO L93 Difference]: Finished difference Result 54 states and 54 transitions. [2018-09-21 18:42:10,767 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-09-21 18:42:10,768 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 48 [2018-09-21 18:42:10,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-21 18:42:10,769 INFO L225 Difference]: With dead ends: 54 [2018-09-21 18:42:10,769 INFO L226 Difference]: Without dead ends: 51 [2018-09-21 18:42:10,770 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 43 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-09-21 18:42:10,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2018-09-21 18:42:10,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2018-09-21 18:42:10,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2018-09-21 18:42:10,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 51 transitions. [2018-09-21 18:42:10,775 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 51 transitions. Word has length 48 [2018-09-21 18:42:10,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-21 18:42:10,776 INFO L480 AbstractCegarLoop]: Abstraction has 51 states and 51 transitions. [2018-09-21 18:42:10,776 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-21 18:42:10,776 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 51 transitions. [2018-09-21 18:42:10,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2018-09-21 18:42:10,779 INFO L368 BasicCegarLoop]: Found error trace [2018-09-21 18:42:10,779 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-21 18:42:10,779 INFO L423 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-21 18:42:10,779 INFO L82 PathProgramCache]: Analyzing trace with hash 1111146332, now seen corresponding path program 1 times [2018-09-21 18:42:10,780 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-21 18:42:10,780 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 18:42:10,787 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-21 18:42:10,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-09-21 18:42:10,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-09-21 18:42:11,022 INFO L443 BasicCegarLoop]: Counterexample might be feasible [2018-09-21 18:42:11,143 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.09 06:42:11 BoogieIcfgContainer [2018-09-21 18:42:11,143 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-21 18:42:11,144 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-09-21 18:42:11,144 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-09-21 18:42:11,144 INFO L276 PluginConnector]: Witness Printer initialized [2018-09-21 18:42:11,147 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 06:42:04" (3/4) ... [2018-09-21 18:42:11,150 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2018-09-21 18:42:11,300 INFO L145 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2018-09-21 18:42:11,300 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-09-21 18:42:11,301 INFO L168 Benchmark]: Toolchain (without parser) took 7549.37 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 135.3 MB). Free memory was 953.2 MB in the beginning and 834.5 MB in the end (delta: 118.7 MB). Peak memory consumption was 253.9 MB. Max. memory is 11.5 GB. [2018-09-21 18:42:11,306 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-09-21 18:42:11,307 INFO L168 Benchmark]: CACSL2BoogieTranslator took 415.16 ms. Allocated memory is still 1.0 GB. Free memory was 953.2 MB in the beginning and 942.4 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-09-21 18:42:11,308 INFO L168 Benchmark]: Boogie Preprocessor took 64.76 ms. Allocated memory is still 1.0 GB. Free memory was 942.4 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 18:42:11,310 INFO L168 Benchmark]: RCFGBuilder took 745.45 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 135.3 MB). Free memory was 937.1 MB in the beginning and 1.1 GB in the end (delta: -160.4 MB). Peak memory consumption was 22.2 MB. Max. memory is 11.5 GB. [2018-09-21 18:42:11,312 INFO L168 Benchmark]: TraceAbstraction took 6155.28 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 834.5 MB in the end (delta: 263.0 MB). Peak memory consumption was 263.0 MB. Max. memory is 11.5 GB. [2018-09-21 18:42:11,313 INFO L168 Benchmark]: Witness Printer took 156.30 ms. Allocated memory is still 1.2 GB. Free memory is still 834.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-09-21 18:42:11,318 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 415.16 ms. Allocated memory is still 1.0 GB. Free memory was 953.2 MB in the beginning and 942.4 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 64.76 ms. Allocated memory is still 1.0 GB. Free memory was 942.4 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 745.45 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 135.3 MB). Free memory was 937.1 MB in the beginning and 1.1 GB in the end (delta: -160.4 MB). Peak memory consumption was 22.2 MB. Max. memory is 11.5 GB. * TraceAbstraction took 6155.28 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 834.5 MB in the end (delta: 263.0 MB). Peak memory consumption was 263.0 MB. Max. memory is 11.5 GB. * Witness Printer took 156.30 ms. Allocated memory is still 1.2 GB. Free memory is still 834.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 79]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L73] float x = 0.0f; [L74] float y = -0.0f; VAL [x=0.0, y=0.0] [L75] CALL, EXPR fmax_float(x, y) VAL [\old(x)=0.0, \old(y)=0.0] [L44] CALL, EXPR __fpclassify_float(x) VAL [\old(x)=0.0] [L21] __uint32_t w; VAL [\old(x)=0.0, x=0.0] [L24] FCALL ieee_float_shape_type gf_u; VAL [\old(x)=0.0, gf_u={3:0}, x=0.0] [L25] FCALL gf_u.value = (x) VAL [\old(x)=0.0, gf_u={3:0}, x=0.0] [L26] EXPR, FCALL gf_u.word VAL [\old(x)=0.0, gf_u={3:0}, gf_u.word=0, x=0.0] [L26] (w) = gf_u.word VAL [\old(x)=0.0, gf_u={3:0}, gf_u.word=0, w=0, x=0.0] [L26] FCALL (w) = gf_u.word VAL [(w) = gf_u.word=0.0, \old(x)=0.0, gf_u={3:0}, gf_u.word=0, w=0, x=0.0] [L27] COND FALSE !(0) VAL [\old(x)=0.0, w=0, x=0.0] [L29] COND TRUE w == 0x00000000 || w == 0x80000000 [L30] RET return 2; VAL [\old(x)=0.0, \result=2, w=0, x=0.0] [L44] EXPR __fpclassify_float(x) VAL [\old(x)=0.0, \old(y)=0.0, __fpclassify_float(x)=2, x=0.0, y=0.0] [L44] COND FALSE !(__fpclassify_float(x) == 0) [L48] CALL, EXPR __fpclassify_float(y) VAL [\old(x)=0.0] [L21] __uint32_t w; VAL [\old(x)=0.0, x=0.0] [L24] FCALL ieee_float_shape_type gf_u; VAL [\old(x)=0.0, gf_u={3:0}, x=0.0] [L25] FCALL gf_u.value = (x) VAL [\old(x)=0.0, gf_u={3:0}, x=0.0] [L26] EXPR, FCALL gf_u.word VAL [\old(x)=0.0, gf_u={3:0}, gf_u.word=-2147483648, x=0.0] [L26] (w) = gf_u.word VAL [\old(x)=0.0, gf_u={3:0}, gf_u.word=-2147483648, w=2147483648, x=0.0] [L26] FCALL (w) = gf_u.word VAL [(w) = gf_u.word=0.0, \old(x)=0.0, gf_u={3:0}, gf_u.word=-2147483648, w=2147483648, x=0.0] [L27] COND FALSE !(0) VAL [\old(x)=0.0, w=2147483648, x=0.0] [L29] COND TRUE w == 0x00000000 || w == 0x80000000 [L30] RET return 2; VAL [\old(x)=0.0, \result=2, w=2147483648, x=0.0] [L48] EXPR __fpclassify_float(y) VAL [\old(x)=0.0, \old(y)=0.0, __fpclassify_float(y)=2, x=0.0, y=0.0] [L48] COND FALSE !(__fpclassify_float(y) == 0) [L51] COND FALSE, EXPR !(x > y ? x : y) [L51] EXPR x > y ? x : y VAL [\old(x)=0.0, \old(y)=0.0, x=0.0, x > y ? x : y=0.0, y=0.0] [L51] RET return x > y ? x : y; [L75] EXPR fmax_float(x, y) VAL [fmax_float(x, y)=0.0, x=0.0, y=0.0] [L75] float res = fmax_float(x, y); [L78] EXPR res == 0.0f && __signbit_float(res) == 0 VAL [res=0.0, res == 0.0f && __signbit_float(res) == 0=1, x=0.0, y=0.0] [L78] COND TRUE, EXPR res == 0.0f && __signbit_float(res) == 0 VAL [res=0.0, res == 0.0f && __signbit_float(res) == 0=1, x=0.0, y=0.0] [L78] CALL, EXPR __signbit_float(res) VAL [\old(x)=0.0] [L55] __uint32_t w; VAL [\old(x)=0.0, x=0.0] [L58] FCALL ieee_float_shape_type gf_u; VAL [\old(x)=0.0, gf_u={2:0}, x=0.0] [L59] FCALL gf_u.value = (x) VAL [\old(x)=0.0, gf_u={2:0}, x=0.0] [L60] EXPR, FCALL gf_u.word VAL [\old(x)=0.0, gf_u={2:0}, gf_u.word=-2147483648, x=0.0] [L60] (w) = gf_u.word VAL [\old(x)=0.0, gf_u={2:0}, gf_u.word=-2147483648, w=2147483648, x=0.0] [L60] FCALL (w) = gf_u.word VAL [(w) = gf_u.word=0.0, \old(x)=0.0, gf_u={2:0}, gf_u.word=-2147483648, w=2147483648, x=0.0] [L61] COND FALSE !(0) VAL [\old(x)=0.0, w=2147483648, x=0.0] [L63] RET return (w & 0x80000000) != 0; VAL [\old(x)=0.0, \result=1, w=2147483648, x=0.0] [L78] EXPR __signbit_float(res) VAL [__signbit_float(res)=1, res=0.0, res == 0.0f && __signbit_float(res) == 0=1, x=0.0, y=0.0] [L78] EXPR res == 0.0f && __signbit_float(res) == 0 VAL [__signbit_float(res)=1, res=0.0, res == 0.0f && __signbit_float(res) == 0=0, x=0.0, y=0.0] [L78] COND TRUE !(res == 0.0f && __signbit_float(res) == 0) [L79] __VERIFIER_error() VAL [res=0.0, x=0.0, y=0.0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 58 locations, 1 error locations. UNSAFE Result, 6.0s OverallTime, 8 OverallIterations, 2 TraceHistogramMax, 3.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 382 SDtfs, 125 SDslu, 1266 SDs, 0 SdLazy, 433 SolverSat, 11 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 284 GetRequests, 235 SyntacticMatches, 1 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 2.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=58occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 7 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.6s InterpolantComputationTime, 335 NumberOfCodeBlocks, 335 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 264 ConstructedInterpolants, 12 QuantifiedInterpolants, 28345 SizeOfPredicates, 23 NumberOfNonLiveVariables, 599 ConjunctsInSsa, 43 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 56/56 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...