/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/Ultimate.py --spec ../../../trunk/examples/svcomp/ReachSafety.prp --file ../../../trunk/examples/svcomp/float-newlib/float_req_bl_1250_true-unreach-call.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 40ef5092 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_1250_true-unreach-call.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 7aa9ac80ed7bb9ce6b78459a496e265402ed9cc3 ................................................................................................................................................................................................................................................................................................................................................................................ 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_1250_true-unreach-call.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 7aa9ac80ed7bb9ce6b78459a496e265402ed9cc3 ..................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-40ef509 [2018-09-20 15:31:45,713 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-20 15:31:45,716 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-20 15:31:45,729 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-20 15:31:45,730 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-20 15:31:45,731 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-20 15:31:45,732 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-20 15:31:45,734 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-20 15:31:45,736 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-20 15:31:45,737 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-20 15:31:45,738 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-20 15:31:45,739 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-20 15:31:45,740 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-20 15:31:45,741 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-20 15:31:45,742 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-20 15:31:45,743 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-20 15:31:45,744 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-20 15:31:45,746 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-20 15:31:45,748 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-20 15:31:45,750 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-20 15:31:45,752 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-20 15:31:45,753 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-20 15:31:45,755 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-20 15:31:45,756 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-20 15:31:45,756 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-20 15:31:45,757 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-20 15:31:45,759 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-20 15:31:45,760 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-20 15:31:45,761 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-20 15:31:45,762 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-20 15:31:45,763 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-20 15:31:45,763 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-20 15:31:45,764 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-20 15:31:45,764 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-20 15:31:45,765 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-20 15:31:45,766 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-20 15:31:45,767 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-09-20 15:31:45,790 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-20 15:31:45,790 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-20 15:31:45,791 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-20 15:31:45,791 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-09-20 15:31:45,792 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-09-20 15:31:45,792 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-09-20 15:31:45,792 INFO L133 SettingsManager]: * Use SBE=true [2018-09-20 15:31:45,793 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-20 15:31:45,793 INFO L133 SettingsManager]: * sizeof long=4 [2018-09-20 15:31:45,793 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-20 15:31:45,793 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-09-20 15:31:45,793 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-20 15:31:45,794 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-20 15:31:45,794 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-20 15:31:45,794 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-20 15:31:45,794 INFO L133 SettingsManager]: * sizeof long double=12 [2018-09-20 15:31:45,794 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-20 15:31:45,794 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-20 15:31:45,795 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-20 15:31:45,795 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-20 15:31:45,795 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-20 15:31:45,795 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-20 15:31:45,795 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-20 15:31:45,795 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-20 15:31:45,796 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-20 15:31:45,796 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-20 15:31:45,796 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-09-20 15:31:45,796 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-20 15:31:45,796 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-20 15:31:45,796 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 -> 7aa9ac80ed7bb9ce6b78459a496e265402ed9cc3 [2018-09-20 15:31:45,855 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-20 15:31:45,870 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-20 15:31:45,874 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-20 15:31:45,876 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-20 15:31:45,877 INFO L276 PluginConnector]: CDTParser initialized [2018-09-20 15:31:45,878 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1250_true-unreach-call.c [2018-09-20 15:31:46,241 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1d5f49af7/94951394be114bc890a01ea84f0b7321/FLAGe301aa2fb [2018-09-20 15:31:46,430 INFO L277 CDTParser]: Found 1 translation units. [2018-09-20 15:31:46,430 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/float_req_bl_1250_true-unreach-call.c [2018-09-20 15:31:46,439 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1d5f49af7/94951394be114bc890a01ea84f0b7321/FLAGe301aa2fb [2018-09-20 15:31:46,457 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1d5f49af7/94951394be114bc890a01ea84f0b7321 [2018-09-20 15:31:46,462 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-20 15:31:46,465 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-20 15:31:46,467 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-20 15:31:46,467 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-20 15:31:46,474 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-20 15:31:46,475 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 03:31:46" (1/1) ... [2018-09-20 15:31:46,479 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7bb3a3e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 03:31:46, skipping insertion in model container [2018-09-20 15:31:46,479 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 03:31:46" (1/1) ... [2018-09-20 15:31:46,492 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-20 15:31:46,690 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-20 15:31:46,706 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-20 15:31:46,720 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-20 15:31:46,762 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 03:31:46 WrapperNode [2018-09-20 15:31:46,762 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-20 15:31:46,763 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-20 15:31:46,763 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-20 15:31:46,763 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-20 15:31:46,779 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 03:31:46" (1/1) ... [2018-09-20 15:31:46,779 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 03:31:46" (1/1) ... [2018-09-20 15:31:46,791 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 03:31:46" (1/1) ... [2018-09-20 15:31:46,791 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 03:31:46" (1/1) ... [2018-09-20 15:31:46,796 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 03:31:46" (1/1) ... [2018-09-20 15:31:46,805 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 03:31:46" (1/1) ... [2018-09-20 15:31:46,807 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 03:31:46" (1/1) ... [2018-09-20 15:31:46,812 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-20 15:31:46,816 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-20 15:31:46,816 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-20 15:31:46,816 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-20 15:31:46,817 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 03:31:46" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-20 15:31:46,899 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-20 15:31:46,900 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-20 15:31:46,900 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_float [2018-09-20 15:31:46,900 INFO L138 BoogieDeclarations]: Found implementation of procedure fmax_float [2018-09-20 15:31:46,900 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_float [2018-09-20 15:31:46,900 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-20 15:31:46,901 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-09-20 15:31:46,901 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_float [2018-09-20 15:31:46,901 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-09-20 15:31:46,902 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2018-09-20 15:31:46,902 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-09-20 15:31:46,902 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-09-20 15:31:46,902 INFO L130 BoogieDeclarations]: Found specification of procedure fmax_float [2018-09-20 15:31:46,902 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_float [2018-09-20 15:31:46,902 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-20 15:31:46,902 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-20 15:31:46,903 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-20 15:31:46,903 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~real [2018-09-20 15:31:46,903 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2018-09-20 15:31:46,903 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2018-09-20 15:31:46,903 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-09-20 15:31:47,561 INFO L365 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-20 15:31:47,563 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 03:31:47 BoogieIcfgContainer [2018-09-20 15:31:47,563 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-20 15:31:47,564 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-20 15:31:47,565 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-20 15:31:47,569 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-20 15:31:47,569 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.09 03:31:46" (1/3) ... [2018-09-20 15:31:47,570 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@443a0429 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 03:31:47, skipping insertion in model container [2018-09-20 15:31:47,571 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 03:31:46" (2/3) ... [2018-09-20 15:31:47,572 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@443a0429 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 03:31:47, skipping insertion in model container [2018-09-20 15:31:47,572 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 03:31:47" (3/3) ... [2018-09-20 15:31:47,575 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_1250_true-unreach-call.c [2018-09-20 15:31:47,586 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-20 15:31:47,600 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-20 15:31:47,667 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-20 15:31:47,668 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-20 15:31:47,668 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-20 15:31:47,668 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-20 15:31:47,668 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-20 15:31:47,669 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-20 15:31:47,669 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-20 15:31:47,669 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-20 15:31:47,670 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-20 15:31:47,709 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states. [2018-09-20 15:31:47,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-09-20 15:31:47,720 INFO L368 BasicCegarLoop]: Found error trace [2018-09-20 15:31:47,722 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-20 15:31:47,726 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-20 15:31:47,732 INFO L82 PathProgramCache]: Analyzing trace with hash 1072307066, now seen corresponding path program 1 times [2018-09-20 15:31:47,734 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-20 15:31:47,734 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-20 15:31:47,781 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-20 15:31:47,781 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-20 15:31:47,781 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-20 15:31:47,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-20 15:31:47,909 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-20 15:31:47,919 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-20 15:31:47,921 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-09-20 15:31:47,926 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-09-20 15:31:47,944 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-09-20 15:31:47,944 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-09-20 15:31:47,949 INFO L87 Difference]: Start difference. First operand 48 states. Second operand 2 states. [2018-09-20 15:31:47,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-20 15:31:47,995 INFO L93 Difference]: Finished difference Result 87 states and 108 transitions. [2018-09-20 15:31:47,995 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-09-20 15:31:47,997 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 26 [2018-09-20 15:31:47,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-20 15:31:48,011 INFO L225 Difference]: With dead ends: 87 [2018-09-20 15:31:48,012 INFO L226 Difference]: Without dead ends: 44 [2018-09-20 15:31:48,017 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 [2018-09-20 15:31:48,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2018-09-20 15:31:48,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2018-09-20 15:31:48,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2018-09-20 15:31:48,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 51 transitions. [2018-09-20 15:31:48,081 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 51 transitions. Word has length 26 [2018-09-20 15:31:48,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-20 15:31:48,082 INFO L480 AbstractCegarLoop]: Abstraction has 44 states and 51 transitions. [2018-09-20 15:31:48,083 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-09-20 15:31:48,083 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 51 transitions. [2018-09-20 15:31:48,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2018-09-20 15:31:48,090 INFO L368 BasicCegarLoop]: Found error trace [2018-09-20 15:31:48,091 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-20 15:31:48,091 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-20 15:31:48,091 INFO L82 PathProgramCache]: Analyzing trace with hash -1892459167, now seen corresponding path program 1 times [2018-09-20 15:31:48,092 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-20 15:31:48,092 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-20 15:31:48,095 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-20 15:31:48,095 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-20 15:31:48,096 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-20 15:31:48,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-20 15:31:48,267 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-20 15:31:48,267 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-20 15:31:48,268 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-20 15:31:48,270 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-20 15:31:48,271 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-20 15:31:48,271 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-20 15:31:48,273 INFO L87 Difference]: Start difference. First operand 44 states and 51 transitions. Second operand 4 states. [2018-09-20 15:31:48,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-20 15:31:48,344 INFO L93 Difference]: Finished difference Result 59 states and 67 transitions. [2018-09-20 15:31:48,345 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-20 15:31:48,345 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 35 [2018-09-20 15:31:48,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-20 15:31:48,349 INFO L225 Difference]: With dead ends: 59 [2018-09-20 15:31:48,349 INFO L226 Difference]: Without dead ends: 48 [2018-09-20 15:31:48,350 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 [2018-09-20 15:31:48,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2018-09-20 15:31:48,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2018-09-20 15:31:48,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2018-09-20 15:31:48,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 56 transitions. [2018-09-20 15:31:48,365 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 56 transitions. Word has length 35 [2018-09-20 15:31:48,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-20 15:31:48,366 INFO L480 AbstractCegarLoop]: Abstraction has 48 states and 56 transitions. [2018-09-20 15:31:48,366 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-20 15:31:48,366 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 56 transitions. [2018-09-20 15:31:48,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-09-20 15:31:48,368 INFO L368 BasicCegarLoop]: Found error trace [2018-09-20 15:31:48,368 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-20 15:31:48,368 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-20 15:31:48,368 INFO L82 PathProgramCache]: Analyzing trace with hash -211612987, now seen corresponding path program 1 times [2018-09-20 15:31:48,369 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-20 15:31:48,369 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-20 15:31:48,370 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-20 15:31:48,370 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-20 15:31:48,370 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-20 15:31:48,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-20 15:31:48,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-20 15:31:48,509 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-20 15:31:48,509 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-20 15:31:48,509 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-20 15:31:48,510 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-20 15:31:48,510 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-20 15:31:48,510 INFO L87 Difference]: Start difference. First operand 48 states and 56 transitions. Second operand 4 states. [2018-09-20 15:31:48,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-20 15:31:48,632 INFO L93 Difference]: Finished difference Result 63 states and 72 transitions. [2018-09-20 15:31:48,633 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-20 15:31:48,633 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 38 [2018-09-20 15:31:48,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-20 15:31:48,635 INFO L225 Difference]: With dead ends: 63 [2018-09-20 15:31:48,635 INFO L226 Difference]: Without dead ends: 52 [2018-09-20 15:31:48,639 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 [2018-09-20 15:31:48,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2018-09-20 15:31:48,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 48. [2018-09-20 15:31:48,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2018-09-20 15:31:48,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 56 transitions. [2018-09-20 15:31:48,653 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 56 transitions. Word has length 38 [2018-09-20 15:31:48,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-20 15:31:48,655 INFO L480 AbstractCegarLoop]: Abstraction has 48 states and 56 transitions. [2018-09-20 15:31:48,655 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-20 15:31:48,656 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 56 transitions. [2018-09-20 15:31:48,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-09-20 15:31:48,659 INFO L368 BasicCegarLoop]: Found error trace [2018-09-20 15:31:48,659 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-20 15:31:48,660 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-20 15:31:48,661 INFO L82 PathProgramCache]: Analyzing trace with hash 1295938822, now seen corresponding path program 1 times [2018-09-20 15:31:48,661 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-20 15:31:48,661 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-20 15:31:48,662 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-20 15:31:48,662 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-20 15:31:48,663 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-20 15:31:48,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-09-20 15:31:48,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-09-20 15:31:48,771 INFO L443 BasicCegarLoop]: Counterexample might be feasible [2018-09-20 15:31:48,807 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.09 03:31:48 BoogieIcfgContainer [2018-09-20 15:31:48,807 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-20 15:31:48,807 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-09-20 15:31:48,808 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-09-20 15:31:48,808 INFO L276 PluginConnector]: Witness Printer initialized [2018-09-20 15:31:48,809 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 03:31:47" (3/4) ... [2018-09-20 15:31:48,813 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-09-20 15:31:48,813 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-09-20 15:31:48,815 INFO L168 Benchmark]: Toolchain (without parser) took 2352.20 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 103.3 MB). Free memory was 950.5 MB in the beginning and 1.0 GB in the end (delta: -76.7 MB). Peak memory consumption was 26.5 MB. Max. memory is 11.5 GB. [2018-09-20 15:31:48,817 INFO L168 Benchmark]: CDTParser took 0.44 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. [2018-09-20 15:31:48,817 INFO L168 Benchmark]: CACSL2BoogieTranslator took 296.03 ms. Allocated memory is still 1.0 GB. Free memory was 950.5 MB in the beginning and 939.6 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.9 MB. Max. memory is 11.5 GB. [2018-09-20 15:31:48,818 INFO L168 Benchmark]: Boogie Preprocessor took 49.42 ms. Allocated memory is still 1.0 GB. Free memory is still 939.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-09-20 15:31:48,819 INFO L168 Benchmark]: RCFGBuilder took 747.65 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 103.3 MB). Free memory was 939.6 MB in the beginning and 1.1 GB in the end (delta: -137.3 MB). Peak memory consumption was 27.3 MB. Max. memory is 11.5 GB. [2018-09-20 15:31:48,820 INFO L168 Benchmark]: TraceAbstraction took 1242.72 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 49.7 MB). Peak memory consumption was 49.7 MB. Max. memory is 11.5 GB. [2018-09-20 15:31:48,821 INFO L168 Benchmark]: Witness Printer took 6.22 ms. Allocated memory is still 1.1 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-09-20 15:31:48,825 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.44 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 296.03 ms. Allocated memory is still 1.0 GB. Free memory was 950.5 MB in the beginning and 939.6 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.9 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 49.42 ms. Allocated memory is still 1.0 GB. Free memory is still 939.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 747.65 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 103.3 MB). Free memory was 939.6 MB in the beginning and 1.1 GB in the end (delta: -137.3 MB). Peak memory consumption was 27.3 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1242.72 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 49.7 MB). Peak memory consumption was 49.7 MB. Max. memory is 11.5 GB. * Witness Printer took 6.22 ms. Allocated memory is still 1.1 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 65]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 54, overapproximation of someBinaryArithmeticFLOAToperation at line 60. Possible FailurePath: [L60] float x = 0.0f / 0.0f; [L61] float y = 0.0f / 0.0f; [L62] CALL, EXPR fmax_float(x, y) VAL [\old(x)=4286578692, \old(y)=4286578690] [L43] CALL, EXPR __fpclassify_float(x) VAL [\old(x)=4286578692] [L20] __uint32_t w; VAL [\old(x)=4286578692, x=4286578692] [L23] FCALL ieee_float_shape_type gf_u; VAL [\old(x)=4286578692, gf_u={4286578695:0}, x=4286578692] [L24] FCALL gf_u.value = (x) VAL [\old(x)=4286578692, gf_u={4286578695:0}, x=4286578692] [L25] EXPR, FCALL gf_u.word VAL [\old(x)=4286578692, gf_u={4286578695:0}, gf_u.word=4286578689, x=4286578692] [L25] (w) = gf_u.word VAL [\old(x)=4286578692, gf_u={4286578695:0}, gf_u.word=4286578689, w=4286578689, x=4286578692] [L25] FCALL (w) = gf_u.word VAL [(w) = gf_u.word=4286578693, \old(x)=4286578692, gf_u={4286578695:0}, gf_u.word=4286578689, w=4286578689, x=4286578692] [L26] COND FALSE !(0) VAL [\old(x)=4286578692, w=4286578689, x=4286578692] [L28] COND FALSE !(w == 0x00000000 || w == 0x80000000) VAL [\old(x)=4286578692, w=4286578689, x=4286578692] [L30-L31] COND FALSE !((w >= 0x00800000 && w <= 0x7f7fffff) || (w >= 0x80800000 && w <= 0xff7fffff)) VAL [\old(x)=4286578692, w=4286578689, x=4286578692] [L33-L34] COND FALSE !((w >= 0x00000001 && w <= 0x007fffff) || (w >= 0x80000001 && w <= 0x807fffff)) VAL [\old(x)=4286578692, w=4286578689, x=4286578692] [L36] COND FALSE !(w == 0x7f800000 || w == 0xff800000) [L39] RET return 0; VAL [\old(x)=4286578692, \result=0, w=4286578689, x=4286578692] [L43] EXPR __fpclassify_float(x) VAL [\old(x)=4286578692, \old(y)=4286578690, __fpclassify_float(x)=0, x=4286578692, y=4286578690] [L43] COND TRUE __fpclassify_float(x) == 0 [L44] RET return y; VAL [\old(x)=4286578692, \old(y)=4286578690, \result=4286578690, x=4286578692, y=4286578690] [L62] EXPR fmax_float(x, y) VAL [fmax_float(x, y)=4286578690, x=4286578692, y=4286578690] [L62] float res = fmax_float(x, y); [L64] CALL, EXPR isnan_float(res) VAL [\old(x)=4286578690] [L54] RET return x != x; VAL [\old(x)=4286578690, \result=0, x=4286578690] [L64] EXPR isnan_float(res) VAL [isnan_float(res)=0, res=4286578690, x=4286578692, y=4286578690] [L64] COND TRUE !isnan_float(res) [L65] __VERIFIER_error() VAL [res=4286578690, x=4286578692, y=4286578690] - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 48 locations, 1 error locations. UNSAFE Result, 1.1s OverallTime, 4 OverallIterations, 1 TraceHistogramMax, 0.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 158 SDtfs, 0 SDslu, 190 SDs, 0 SdLazy, 21 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=48occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 4 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 137 NumberOfCodeBlocks, 137 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 96 ConstructedInterpolants, 0 QuantifiedInterpolants, 3718 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.23-40ef509 [2018-09-20 15:31:51,280 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-20 15:31:51,282 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-20 15:31:51,299 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-20 15:31:51,300 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-20 15:31:51,301 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-20 15:31:51,302 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-20 15:31:51,304 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-20 15:31:51,306 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-20 15:31:51,307 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-20 15:31:51,308 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-20 15:31:51,308 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-20 15:31:51,309 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-20 15:31:51,311 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-20 15:31:51,312 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-20 15:31:51,313 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-20 15:31:51,314 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-20 15:31:51,316 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-20 15:31:51,318 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-20 15:31:51,320 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-20 15:31:51,321 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-20 15:31:51,323 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-20 15:31:51,326 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-20 15:31:51,326 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-20 15:31:51,326 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-20 15:31:51,327 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-20 15:31:51,329 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-20 15:31:51,329 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-20 15:31:51,331 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-20 15:31:51,332 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-20 15:31:51,332 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-20 15:31:51,333 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-20 15:31:51,333 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-20 15:31:51,334 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-20 15:31:51,335 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-20 15:31:51,336 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-20 15:31:51,337 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2018-09-20 15:31:51,368 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-20 15:31:51,368 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-20 15:31:51,369 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-20 15:31:51,369 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-09-20 15:31:51,370 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-09-20 15:31:51,370 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-09-20 15:31:51,371 INFO L133 SettingsManager]: * Use SBE=true [2018-09-20 15:31:51,371 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-20 15:31:51,371 INFO L133 SettingsManager]: * sizeof long=4 [2018-09-20 15:31:51,371 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-09-20 15:31:51,371 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-20 15:31:51,372 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-20 15:31:51,372 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-20 15:31:51,372 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-20 15:31:51,372 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-09-20 15:31:51,372 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-09-20 15:31:51,374 INFO L133 SettingsManager]: * sizeof long double=12 [2018-09-20 15:31:51,374 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-20 15:31:51,374 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-20 15:31:51,374 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-20 15:31:51,375 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-20 15:31:51,375 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-20 15:31:51,375 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-20 15:31:51,376 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-20 15:31:51,376 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-20 15:31:51,376 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-20 15:31:51,376 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-20 15:31:51,376 INFO L133 SettingsManager]: * Trace refinement strategy=WOLF [2018-09-20 15:31:51,377 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-20 15:31:51,377 INFO L133 SettingsManager]: * Command for external solver=cvc4nyu --tear-down-incremental --rewrite-divk --print-success --lang smt [2018-09-20 15:31:51,377 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-09-20 15:31:51,377 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 -> 7aa9ac80ed7bb9ce6b78459a496e265402ed9cc3 [2018-09-20 15:31:51,457 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-20 15:31:51,473 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-20 15:31:51,480 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-20 15:31:51,482 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-20 15:31:51,482 INFO L276 PluginConnector]: CDTParser initialized [2018-09-20 15:31:51,483 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1250_true-unreach-call.c [2018-09-20 15:31:51,866 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8b2c81de7/37a31f0c0fb84beab4c635cffa783ea1/FLAGe8f423ba5 [2018-09-20 15:31:52,032 INFO L277 CDTParser]: Found 1 translation units. [2018-09-20 15:31:52,033 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/float_req_bl_1250_true-unreach-call.c [2018-09-20 15:31:52,042 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8b2c81de7/37a31f0c0fb84beab4c635cffa783ea1/FLAGe8f423ba5 [2018-09-20 15:31:52,060 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8b2c81de7/37a31f0c0fb84beab4c635cffa783ea1 [2018-09-20 15:31:52,067 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-20 15:31:52,070 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-20 15:31:52,072 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-20 15:31:52,072 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-20 15:31:52,079 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-20 15:31:52,080 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 03:31:52" (1/1) ... [2018-09-20 15:31:52,084 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1664520 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 03:31:52, skipping insertion in model container [2018-09-20 15:31:52,084 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 03:31:52" (1/1) ... [2018-09-20 15:31:52,097 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-20 15:31:52,315 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-20 15:31:52,335 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-20 15:31:52,351 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-20 15:31:52,397 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 03:31:52 WrapperNode [2018-09-20 15:31:52,398 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-20 15:31:52,399 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-20 15:31:52,399 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-20 15:31:52,399 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-20 15:31:52,418 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 03:31:52" (1/1) ... [2018-09-20 15:31:52,418 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 03:31:52" (1/1) ... [2018-09-20 15:31:52,432 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 03:31:52" (1/1) ... [2018-09-20 15:31:52,432 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 03:31:52" (1/1) ... [2018-09-20 15:31:52,439 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 03:31:52" (1/1) ... [2018-09-20 15:31:52,445 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 03:31:52" (1/1) ... [2018-09-20 15:31:52,448 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 03:31:52" (1/1) ... [2018-09-20 15:31:52,452 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-20 15:31:52,453 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-20 15:31:52,453 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-20 15:31:52,453 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-20 15:31:52,454 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 03:31:52" (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 [2018-09-20 15:31:52,512 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-20 15:31:52,513 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-20 15:31:52,513 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_float [2018-09-20 15:31:52,513 INFO L138 BoogieDeclarations]: Found implementation of procedure fmax_float [2018-09-20 15:31:52,513 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_float [2018-09-20 15:31:52,513 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-20 15:31:52,513 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-09-20 15:31:52,514 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_float [2018-09-20 15:31:52,514 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-09-20 15:31:52,514 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2018-09-20 15:31:52,514 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2018-09-20 15:31:52,514 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-09-20 15:31:52,515 INFO L130 BoogieDeclarations]: Found specification of procedure fmax_float [2018-09-20 15:31:52,515 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_float [2018-09-20 15:31:52,516 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-20 15:31:52,516 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-20 15:31:52,516 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-20 15:31:52,516 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intFLOATTYPE4 [2018-09-20 15:31:52,516 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2018-09-20 15:31:52,516 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2018-09-20 15:31:52,517 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2018-09-20 15:31:52,972 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-20 15:31:52,991 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-20 15:31:53,068 INFO L365 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-20 15:31:53,069 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 03:31:53 BoogieIcfgContainer [2018-09-20 15:31:53,069 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-20 15:31:53,070 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-20 15:31:53,070 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-20 15:31:53,074 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-20 15:31:53,074 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.09 03:31:52" (1/3) ... [2018-09-20 15:31:53,075 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12ff96e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 03:31:53, skipping insertion in model container [2018-09-20 15:31:53,075 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 03:31:52" (2/3) ... [2018-09-20 15:31:53,076 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12ff96e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 03:31:53, skipping insertion in model container [2018-09-20 15:31:53,076 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 03:31:53" (3/3) ... [2018-09-20 15:31:53,079 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_1250_true-unreach-call.c [2018-09-20 15:31:53,089 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-20 15:31:53,098 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-20 15:31:53,141 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-20 15:31:53,142 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-20 15:31:53,142 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-20 15:31:53,142 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-20 15:31:53,142 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-20 15:31:53,143 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-20 15:31:53,143 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-20 15:31:53,143 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-20 15:31:53,143 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-20 15:31:53,164 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states. [2018-09-20 15:31:53,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-09-20 15:31:53,176 INFO L368 BasicCegarLoop]: Found error trace [2018-09-20 15:31:53,177 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-20 15:31:53,180 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-20 15:31:53,192 INFO L82 PathProgramCache]: Analyzing trace with hash 1463672781, now seen corresponding path program 1 times [2018-09-20 15:31:53,197 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-20 15:31:53,198 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) [2018-09-20 15:31:53,212 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2018-09-20 15:31:53,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-20 15:31:53,314 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-20 15:31:53,334 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-20 15:31:53,335 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-20 15:31:53,347 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-20 15:31:53,348 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-09-20 15:31:53,351 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-09-20 15:31:53,364 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-09-20 15:31:53,365 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-09-20 15:31:53,368 INFO L87 Difference]: Start difference. First operand 45 states. Second operand 2 states. [2018-09-20 15:31:53,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-20 15:31:53,398 INFO L93 Difference]: Finished difference Result 81 states and 102 transitions. [2018-09-20 15:31:53,398 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-09-20 15:31:53,400 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 24 [2018-09-20 15:31:53,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-20 15:31:53,412 INFO L225 Difference]: With dead ends: 81 [2018-09-20 15:31:53,412 INFO L226 Difference]: Without dead ends: 41 [2018-09-20 15:31:53,417 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-09-20 15:31:53,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2018-09-20 15:31:53,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2018-09-20 15:31:53,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-09-20 15:31:53,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 48 transitions. [2018-09-20 15:31:53,467 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 48 transitions. Word has length 24 [2018-09-20 15:31:53,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-20 15:31:53,467 INFO L480 AbstractCegarLoop]: Abstraction has 41 states and 48 transitions. [2018-09-20 15:31:53,467 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-09-20 15:31:53,468 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 48 transitions. [2018-09-20 15:31:53,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2018-09-20 15:31:53,471 INFO L368 BasicCegarLoop]: Found error trace [2018-09-20 15:31:53,471 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-20 15:31:53,471 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-20 15:31:53,472 INFO L82 PathProgramCache]: Analyzing trace with hash 74720519, now seen corresponding path program 1 times [2018-09-20 15:31:53,472 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-20 15:31:53,473 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2018-09-20 15:31:53,482 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-20 15:31:53,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-20 15:31:53,537 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-20 15:31:53,653 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-20 15:31:53,654 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-20 15:31:53,670 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-20 15:31:53,670 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-20 15:31:53,672 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-20 15:31:53,673 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-20 15:31:53,673 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-20 15:31:53,674 INFO L87 Difference]: Start difference. First operand 41 states and 48 transitions. Second operand 4 states. [2018-09-20 15:31:53,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-20 15:31:53,796 INFO L93 Difference]: Finished difference Result 54 states and 62 transitions. [2018-09-20 15:31:53,797 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-20 15:31:53,797 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 33 [2018-09-20 15:31:53,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-20 15:31:53,802 INFO L225 Difference]: With dead ends: 54 [2018-09-20 15:31:53,802 INFO L226 Difference]: Without dead ends: 44 [2018-09-20 15:31:53,803 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-20 15:31:53,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2018-09-20 15:31:53,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2018-09-20 15:31:53,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2018-09-20 15:31:53,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 52 transitions. [2018-09-20 15:31:53,830 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 52 transitions. Word has length 33 [2018-09-20 15:31:53,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-20 15:31:53,833 INFO L480 AbstractCegarLoop]: Abstraction has 44 states and 52 transitions. [2018-09-20 15:31:53,833 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-20 15:31:53,833 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 52 transitions. [2018-09-20 15:31:53,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-09-20 15:31:53,835 INFO L368 BasicCegarLoop]: Found error trace [2018-09-20 15:31:53,838 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] [2018-09-20 15:31:53,839 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-20 15:31:53,839 INFO L82 PathProgramCache]: Analyzing trace with hash -1160723660, now seen corresponding path program 1 times [2018-09-20 15:31:53,840 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-20 15:31:53,840 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2018-09-20 15:31:53,851 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-20 15:31:53,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-20 15:31:53,930 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-20 15:31:54,075 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-20 15:31:54,080 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-20 15:31:54,093 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-20 15:31:54,094 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-20 15:31:54,094 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-20 15:31:54,095 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-20 15:31:54,095 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-20 15:31:54,095 INFO L87 Difference]: Start difference. First operand 44 states and 52 transitions. Second operand 4 states. [2018-09-20 15:31:54,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-20 15:31:54,160 INFO L93 Difference]: Finished difference Result 57 states and 66 transitions. [2018-09-20 15:31:54,161 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-20 15:31:54,161 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 34 [2018-09-20 15:31:54,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-20 15:31:54,163 INFO L225 Difference]: With dead ends: 57 [2018-09-20 15:31:54,164 INFO L226 Difference]: Without dead ends: 47 [2018-09-20 15:31:54,165 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-20 15:31:54,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2018-09-20 15:31:54,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 44. [2018-09-20 15:31:54,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2018-09-20 15:31:54,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 52 transitions. [2018-09-20 15:31:54,175 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 52 transitions. Word has length 34 [2018-09-20 15:31:54,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-20 15:31:54,175 INFO L480 AbstractCegarLoop]: Abstraction has 44 states and 52 transitions. [2018-09-20 15:31:54,175 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-20 15:31:54,175 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 52 transitions. [2018-09-20 15:31:54,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2018-09-20 15:31:54,178 INFO L368 BasicCegarLoop]: Found error trace [2018-09-20 15:31:54,178 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-20 15:31:54,178 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-20 15:31:54,179 INFO L82 PathProgramCache]: Analyzing trace with hash -1978399573, now seen corresponding path program 1 times [2018-09-20 15:31:54,179 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-20 15:31:54,180 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 [2018-09-20 15:31:54,190 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-20 15:31:54,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-20 15:31:54,246 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-20 15:31:54,380 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-20 15:31:54,381 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-20 15:31:54,399 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-20 15:31:54,399 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-20 15:31:54,400 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-20 15:31:54,400 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-20 15:31:54,400 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-20 15:31:54,401 INFO L87 Difference]: Start difference. First operand 44 states and 52 transitions. Second operand 4 states. [2018-09-20 15:31:54,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-20 15:31:54,539 INFO L93 Difference]: Finished difference Result 57 states and 66 transitions. [2018-09-20 15:31:54,542 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-20 15:31:54,542 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 35 [2018-09-20 15:31:54,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-20 15:31:54,544 INFO L225 Difference]: With dead ends: 57 [2018-09-20 15:31:54,544 INFO L226 Difference]: Without dead ends: 47 [2018-09-20 15:31:54,548 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-20 15:31:54,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2018-09-20 15:31:54,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 44. [2018-09-20 15:31:54,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2018-09-20 15:31:54,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 52 transitions. [2018-09-20 15:31:54,566 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 52 transitions. Word has length 35 [2018-09-20 15:31:54,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-20 15:31:54,566 INFO L480 AbstractCegarLoop]: Abstraction has 44 states and 52 transitions. [2018-09-20 15:31:54,570 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-20 15:31:54,571 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 52 transitions. [2018-09-20 15:31:54,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-09-20 15:31:54,574 INFO L368 BasicCegarLoop]: Found error trace [2018-09-20 15:31:54,574 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-20 15:31:54,575 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-20 15:31:54,575 INFO L82 PathProgramCache]: Analyzing trace with hash 1564806168, now seen corresponding path program 1 times [2018-09-20 15:31:54,576 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-20 15:31:54,576 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) [2018-09-20 15:31:54,588 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 6 with mathsat -unsat_core_generation=3 [2018-09-20 15:31:54,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-20 15:31:54,665 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-20 15:31:54,729 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-20 15:31:54,730 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-20 15:31:54,741 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-20 15:31:54,741 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-20 15:31:54,742 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-20 15:31:54,742 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-20 15:31:54,742 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-20 15:31:54,743 INFO L87 Difference]: Start difference. First operand 44 states and 52 transitions. Second operand 4 states. [2018-09-20 15:31:54,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-20 15:31:54,862 INFO L93 Difference]: Finished difference Result 57 states and 66 transitions. [2018-09-20 15:31:54,866 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-20 15:31:54,866 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 36 [2018-09-20 15:31:54,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-20 15:31:54,867 INFO L225 Difference]: With dead ends: 57 [2018-09-20 15:31:54,868 INFO L226 Difference]: Without dead ends: 47 [2018-09-20 15:31:54,869 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-20 15:31:54,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2018-09-20 15:31:54,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 44. [2018-09-20 15:31:54,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2018-09-20 15:31:54,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 52 transitions. [2018-09-20 15:31:54,878 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 52 transitions. Word has length 36 [2018-09-20 15:31:54,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-20 15:31:54,879 INFO L480 AbstractCegarLoop]: Abstraction has 44 states and 52 transitions. [2018-09-20 15:31:54,879 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-20 15:31:54,879 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 52 transitions. [2018-09-20 15:31:54,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-09-20 15:31:54,880 INFO L368 BasicCegarLoop]: Found error trace [2018-09-20 15:31:54,881 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-20 15:31:54,882 INFO L423 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-20 15:31:54,882 INFO L82 PathProgramCache]: Analyzing trace with hash 1271403161, now seen corresponding path program 1 times [2018-09-20 15:31:54,882 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-20 15:31:54,883 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) [2018-09-20 15:31:54,896 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 7 with mathsat -unsat_core_generation=3 [2018-09-20 15:31:54,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-20 15:31:54,961 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-20 15:31:55,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-20 15:31:55,190 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-20 15:31:55,204 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-20 15:31:55,204 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2018-09-20 15:31:55,205 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-20 15:31:55,205 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-20 15:31:55,205 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2018-09-20 15:31:55,206 INFO L87 Difference]: Start difference. First operand 44 states and 52 transitions. Second operand 9 states. [2018-09-20 15:31:55,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-20 15:31:55,888 INFO L93 Difference]: Finished difference Result 51 states and 59 transitions. [2018-09-20 15:31:55,889 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-09-20 15:31:55,890 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 36 [2018-09-20 15:31:55,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-20 15:31:55,892 INFO L225 Difference]: With dead ends: 51 [2018-09-20 15:31:55,892 INFO L226 Difference]: Without dead ends: 44 [2018-09-20 15:31:55,893 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2018-09-20 15:31:55,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2018-09-20 15:31:55,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 41. [2018-09-20 15:31:55,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-09-20 15:31:55,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 47 transitions. [2018-09-20 15:31:55,900 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 47 transitions. Word has length 36 [2018-09-20 15:31:55,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-20 15:31:55,901 INFO L480 AbstractCegarLoop]: Abstraction has 41 states and 47 transitions. [2018-09-20 15:31:55,901 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-20 15:31:55,901 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 47 transitions. [2018-09-20 15:31:55,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2018-09-20 15:31:55,903 INFO L368 BasicCegarLoop]: Found error trace [2018-09-20 15:31:55,904 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-20 15:31:55,904 INFO L423 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-20 15:31:55,904 INFO L82 PathProgramCache]: Analyzing trace with hash -1601370173, now seen corresponding path program 1 times [2018-09-20 15:31:55,905 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-20 15:31:55,905 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) [2018-09-20 15:31:55,920 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 8 with mathsat -unsat_core_generation=3 [2018-09-20 15:31:55,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-20 15:31:55,995 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-20 15:31:56,117 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2018-09-20 15:31:56,118 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-20 15:31:56,131 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-20 15:31:56,132 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-20 15:31:56,132 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-20 15:31:56,132 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-20 15:31:56,132 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-20 15:31:56,133 INFO L87 Difference]: Start difference. First operand 41 states and 47 transitions. Second operand 4 states. [2018-09-20 15:31:56,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-20 15:31:56,170 INFO L93 Difference]: Finished difference Result 54 states and 61 transitions. [2018-09-20 15:31:56,175 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-20 15:31:56,175 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 49 [2018-09-20 15:31:56,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-20 15:31:56,177 INFO L225 Difference]: With dead ends: 54 [2018-09-20 15:31:56,177 INFO L226 Difference]: Without dead ends: 44 [2018-09-20 15:31:56,178 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-20 15:31:56,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2018-09-20 15:31:56,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2018-09-20 15:31:56,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2018-09-20 15:31:56,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 51 transitions. [2018-09-20 15:31:56,185 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 51 transitions. Word has length 49 [2018-09-20 15:31:56,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-20 15:31:56,186 INFO L480 AbstractCegarLoop]: Abstraction has 44 states and 51 transitions. [2018-09-20 15:31:56,186 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-20 15:31:56,186 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 51 transitions. [2018-09-20 15:31:56,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2018-09-20 15:31:56,188 INFO L368 BasicCegarLoop]: Found error trace [2018-09-20 15:31:56,188 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-20 15:31:56,188 INFO L423 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-20 15:31:56,189 INFO L82 PathProgramCache]: Analyzing trace with hash -1724773742, now seen corresponding path program 1 times [2018-09-20 15:31:56,190 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-20 15:31:56,190 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 [2018-09-20 15:31:56,194 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-20 15:31:56,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-20 15:31:56,267 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-20 15:31:56,350 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2018-09-20 15:31:56,351 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-20 15:31:56,363 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-20 15:31:56,364 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-20 15:31:56,364 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-20 15:31:56,365 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-20 15:31:56,365 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-20 15:31:56,365 INFO L87 Difference]: Start difference. First operand 44 states and 51 transitions. Second operand 4 states. [2018-09-20 15:31:56,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-20 15:31:56,398 INFO L93 Difference]: Finished difference Result 57 states and 65 transitions. [2018-09-20 15:31:56,399 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-20 15:31:56,399 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 50 [2018-09-20 15:31:56,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-20 15:31:56,400 INFO L225 Difference]: With dead ends: 57 [2018-09-20 15:31:56,401 INFO L226 Difference]: Without dead ends: 47 [2018-09-20 15:31:56,401 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-20 15:31:56,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2018-09-20 15:31:56,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 44. [2018-09-20 15:31:56,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2018-09-20 15:31:56,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 51 transitions. [2018-09-20 15:31:56,409 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 51 transitions. Word has length 50 [2018-09-20 15:31:56,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-20 15:31:56,410 INFO L480 AbstractCegarLoop]: Abstraction has 44 states and 51 transitions. [2018-09-20 15:31:56,410 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-20 15:31:56,410 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 51 transitions. [2018-09-20 15:31:56,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2018-09-20 15:31:56,411 INFO L368 BasicCegarLoop]: Found error trace [2018-09-20 15:31:56,412 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-20 15:31:56,412 INFO L423 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-20 15:31:56,413 INFO L82 PathProgramCache]: Analyzing trace with hash 2128784030, now seen corresponding path program 1 times [2018-09-20 15:31:56,413 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-20 15:31:56,413 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 10 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with mathsat -unsat_core_generation=3 [2018-09-20 15:31:56,421 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-20 15:31:56,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-20 15:31:56,484 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-20 15:31:56,601 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2018-09-20 15:31:56,602 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-20 15:31:56,613 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-20 15:31:56,613 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-09-20 15:31:56,614 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-20 15:31:56,614 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-20 15:31:56,614 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-09-20 15:31:56,614 INFO L87 Difference]: Start difference. First operand 44 states and 51 transitions. Second operand 5 states. [2018-09-20 15:31:56,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-20 15:31:56,816 INFO L93 Difference]: Finished difference Result 55 states and 61 transitions. [2018-09-20 15:31:56,824 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-09-20 15:31:56,824 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 51 [2018-09-20 15:31:56,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-20 15:31:56,825 INFO L225 Difference]: With dead ends: 55 [2018-09-20 15:31:56,825 INFO L226 Difference]: Without dead ends: 44 [2018-09-20 15:31:56,826 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-09-20 15:31:56,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2018-09-20 15:31:56,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2018-09-20 15:31:56,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2018-09-20 15:31:56,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 50 transitions. [2018-09-20 15:31:56,834 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 50 transitions. Word has length 51 [2018-09-20 15:31:56,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-20 15:31:56,835 INFO L480 AbstractCegarLoop]: Abstraction has 44 states and 50 transitions. [2018-09-20 15:31:56,835 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-20 15:31:56,835 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 50 transitions. [2018-09-20 15:31:56,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2018-09-20 15:31:56,837 INFO L368 BasicCegarLoop]: Found error trace [2018-09-20 15:31:56,837 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-20 15:31:56,838 INFO L423 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-20 15:31:56,838 INFO L82 PathProgramCache]: Analyzing trace with hash -1465118688, now seen corresponding path program 1 times [2018-09-20 15:31:56,838 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-20 15:31:56,838 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 11 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with mathsat -unsat_core_generation=3 [2018-09-20 15:31:56,844 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-20 15:31:56,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-20 15:31:56,918 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-20 15:31:57,188 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2018-09-20 15:31:57,189 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-20 15:31:57,203 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-20 15:31:57,203 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2018-09-20 15:31:57,204 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-09-20 15:31:57,204 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-09-20 15:31:57,205 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2018-09-20 15:31:57,205 INFO L87 Difference]: Start difference. First operand 44 states and 50 transitions. Second operand 10 states. [2018-09-20 15:31:57,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-20 15:31:57,841 INFO L93 Difference]: Finished difference Result 51 states and 57 transitions. [2018-09-20 15:31:57,841 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-09-20 15:31:57,841 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 51 [2018-09-20 15:31:57,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-20 15:31:57,844 INFO L225 Difference]: With dead ends: 51 [2018-09-20 15:31:57,844 INFO L226 Difference]: Without dead ends: 41 [2018-09-20 15:31:57,845 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2018-09-20 15:31:57,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2018-09-20 15:31:57,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2018-09-20 15:31:57,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-09-20 15:31:57,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 45 transitions. [2018-09-20 15:31:57,854 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 45 transitions. Word has length 51 [2018-09-20 15:31:57,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-20 15:31:57,855 INFO L480 AbstractCegarLoop]: Abstraction has 41 states and 45 transitions. [2018-09-20 15:31:57,855 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-09-20 15:31:57,855 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 45 transitions. [2018-09-20 15:31:57,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2018-09-20 15:31:57,856 INFO L368 BasicCegarLoop]: Found error trace [2018-09-20 15:31:57,856 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-20 15:31:57,856 INFO L423 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-20 15:31:57,857 INFO L82 PathProgramCache]: Analyzing trace with hash 1866038183, now seen corresponding path program 1 times [2018-09-20 15:31:57,857 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-20 15:31:57,857 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 12 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with mathsat -unsat_core_generation=3 [2018-09-20 15:31:57,863 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-20 15:31:57,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-20 15:31:57,933 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-20 15:31:57,981 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2018-09-20 15:31:57,982 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-20 15:31:57,996 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-20 15:31:57,996 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-20 15:31:57,996 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-20 15:31:57,996 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-20 15:31:57,997 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-20 15:31:57,997 INFO L87 Difference]: Start difference. First operand 41 states and 45 transitions. Second operand 4 states. [2018-09-20 15:31:58,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-20 15:31:58,013 INFO L93 Difference]: Finished difference Result 54 states and 58 transitions. [2018-09-20 15:31:58,014 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-20 15:31:58,014 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 51 [2018-09-20 15:31:58,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-20 15:31:58,015 INFO L225 Difference]: With dead ends: 54 [2018-09-20 15:31:58,015 INFO L226 Difference]: Without dead ends: 43 [2018-09-20 15:31:58,015 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-20 15:31:58,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2018-09-20 15:31:58,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 41. [2018-09-20 15:31:58,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-09-20 15:31:58,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 45 transitions. [2018-09-20 15:31:58,021 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 45 transitions. Word has length 51 [2018-09-20 15:31:58,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-20 15:31:58,022 INFO L480 AbstractCegarLoop]: Abstraction has 41 states and 45 transitions. [2018-09-20 15:31:58,022 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-20 15:31:58,022 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 45 transitions. [2018-09-20 15:31:58,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2018-09-20 15:31:58,023 INFO L368 BasicCegarLoop]: Found error trace [2018-09-20 15:31:58,023 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-20 15:31:58,023 INFO L423 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-20 15:31:58,024 INFO L82 PathProgramCache]: Analyzing trace with hash 338446134, now seen corresponding path program 1 times [2018-09-20 15:31:58,024 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-20 15:31:58,024 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 13 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with mathsat -unsat_core_generation=3 [2018-09-20 15:31:58,028 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-20 15:31:58,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-20 15:31:58,090 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-20 15:31:58,113 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2018-09-20 15:31:58,114 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-20 15:31:58,123 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-20 15:31:58,123 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-20 15:31:58,124 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-20 15:31:58,124 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-20 15:31:58,124 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-20 15:31:58,125 INFO L87 Difference]: Start difference. First operand 41 states and 45 transitions. Second operand 4 states. [2018-09-20 15:31:58,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-20 15:31:58,143 INFO L93 Difference]: Finished difference Result 54 states and 58 transitions. [2018-09-20 15:31:58,144 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-20 15:31:58,145 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 52 [2018-09-20 15:31:58,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-20 15:31:58,146 INFO L225 Difference]: With dead ends: 54 [2018-09-20 15:31:58,146 INFO L226 Difference]: Without dead ends: 43 [2018-09-20 15:31:58,147 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-20 15:31:58,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2018-09-20 15:31:58,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 41. [2018-09-20 15:31:58,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-09-20 15:31:58,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 45 transitions. [2018-09-20 15:31:58,154 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 45 transitions. Word has length 52 [2018-09-20 15:31:58,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-20 15:31:58,154 INFO L480 AbstractCegarLoop]: Abstraction has 41 states and 45 transitions. [2018-09-20 15:31:58,154 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-20 15:31:58,154 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 45 transitions. [2018-09-20 15:31:58,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2018-09-20 15:31:58,156 INFO L368 BasicCegarLoop]: Found error trace [2018-09-20 15:31:58,157 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-20 15:31:58,157 INFO L423 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-20 15:31:58,157 INFO L82 PathProgramCache]: Analyzing trace with hash 45043127, now seen corresponding path program 1 times [2018-09-20 15:31:58,158 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-20 15:31:58,158 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 14 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2018-09-20 15:31:58,173 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 14 with mathsat -unsat_core_generation=3 [2018-09-20 15:31:58,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-20 15:31:58,228 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-20 15:31:58,436 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2018-09-20 15:31:58,436 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-20 15:31:58,446 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-20 15:31:58,446 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2018-09-20 15:31:58,447 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-20 15:31:58,447 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-20 15:31:58,447 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2018-09-20 15:31:58,447 INFO L87 Difference]: Start difference. First operand 41 states and 45 transitions. Second operand 9 states. [2018-09-20 15:31:58,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-20 15:31:58,823 INFO L93 Difference]: Finished difference Result 41 states and 45 transitions. [2018-09-20 15:31:58,823 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-09-20 15:31:58,823 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 52 [2018-09-20 15:31:58,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-20 15:31:58,824 INFO L225 Difference]: With dead ends: 41 [2018-09-20 15:31:58,824 INFO L226 Difference]: Without dead ends: 0 [2018-09-20 15:31:58,825 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2018-09-20 15:31:58,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-09-20 15:31:58,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-09-20 15:31:58,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-09-20 15:31:58,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-09-20 15:31:58,826 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 52 [2018-09-20 15:31:58,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-20 15:31:58,838 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-09-20 15:31:58,838 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-20 15:31:58,838 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-09-20 15:31:58,838 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-09-20 15:31:58,844 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-09-20 15:31:59,264 INFO L426 ceAbstractionStarter]: For program point isnan_floatFINAL(line 54) no Hoare annotation was computed. [2018-09-20 15:31:59,264 INFO L429 ceAbstractionStarter]: At program point isnan_floatENTRY(line 54) the Hoare annotation is: true [2018-09-20 15:31:59,265 INFO L426 ceAbstractionStarter]: For program point isnan_floatEXIT(line 54) no Hoare annotation was computed. [2018-09-20 15:31:59,265 INFO L426 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2018-09-20 15:31:59,265 INFO L429 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2018-09-20 15:31:59,265 INFO L426 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-09-20 15:31:59,265 INFO L426 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-09-20 15:31:59,265 INFO L429 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-09-20 15:31:59,265 INFO L429 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-09-20 15:31:59,265 INFO L426 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-09-20 15:31:59,266 INFO L426 ceAbstractionStarter]: For program point L65(line 65) no Hoare annotation was computed. [2018-09-20 15:31:59,266 INFO L422 ceAbstractionStarter]: At program point L64(line 64) the Hoare annotation is: (let ((.cse0 (fp.div RNE (_ +zero 8 24) (_ +zero 8 24)))) (and (= .cse0 main_~res~0) (= .cse0 main_~y~0))) [2018-09-20 15:31:59,266 INFO L426 ceAbstractionStarter]: For program point L64-1(lines 64 67) no Hoare annotation was computed. [2018-09-20 15:31:59,266 INFO L422 ceAbstractionStarter]: At program point L62(line 62) the Hoare annotation is: (let ((.cse0 (fp.div RNE (_ +zero 8 24) (_ +zero 8 24)))) (and (= .cse0 main_~x~0) (= .cse0 main_~y~0))) [2018-09-20 15:31:59,266 INFO L426 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 65) no Hoare annotation was computed. [2018-09-20 15:31:59,266 INFO L429 ceAbstractionStarter]: At program point mainENTRY(lines 56 70) the Hoare annotation is: true [2018-09-20 15:31:59,267 INFO L426 ceAbstractionStarter]: For program point L62-1(line 62) no Hoare annotation was computed. [2018-09-20 15:31:59,267 INFO L426 ceAbstractionStarter]: For program point mainFINAL(lines 56 70) no Hoare annotation was computed. [2018-09-20 15:31:59,267 INFO L426 ceAbstractionStarter]: For program point mainEXIT(lines 56 70) no Hoare annotation was computed. [2018-09-20 15:31:59,267 INFO L426 ceAbstractionStarter]: For program point fmax_floatEXIT(lines 42 51) no Hoare annotation was computed. [2018-09-20 15:31:59,267 INFO L429 ceAbstractionStarter]: At program point fmax_floatENTRY(lines 42 51) the Hoare annotation is: true [2018-09-20 15:31:59,267 INFO L426 ceAbstractionStarter]: For program point L50(line 50) no Hoare annotation was computed. [2018-09-20 15:31:59,267 INFO L426 ceAbstractionStarter]: For program point L50-2(line 50) no Hoare annotation was computed. [2018-09-20 15:31:59,267 INFO L422 ceAbstractionStarter]: At program point L47(line 47) the Hoare annotation is: (and (= |fmax_float_#in~y| fmax_float_~y) (= |fmax_float_#in~x| fmax_float_~x)) [2018-09-20 15:31:59,267 INFO L426 ceAbstractionStarter]: For program point L47-1(lines 47 49) no Hoare annotation was computed. [2018-09-20 15:31:59,268 INFO L422 ceAbstractionStarter]: At program point L43(line 43) the Hoare annotation is: (and (= |fmax_float_#in~y| fmax_float_~y) (= |fmax_float_#in~x| fmax_float_~x)) [2018-09-20 15:31:59,268 INFO L426 ceAbstractionStarter]: For program point L43-1(lines 43 45) no Hoare annotation was computed. [2018-09-20 15:31:59,268 INFO L426 ceAbstractionStarter]: For program point fmax_floatFINAL(lines 42 51) no Hoare annotation was computed. [2018-09-20 15:31:59,268 INFO L426 ceAbstractionStarter]: For program point L33(lines 33 39) no Hoare annotation was computed. [2018-09-20 15:31:59,268 INFO L426 ceAbstractionStarter]: For program point __fpclassify_floatFINAL(lines 19 40) no Hoare annotation was computed. [2018-09-20 15:31:59,268 INFO L426 ceAbstractionStarter]: For program point L25(line 25) no Hoare annotation was computed. [2018-09-20 15:31:59,268 INFO L426 ceAbstractionStarter]: For program point L25-1(line 25) no Hoare annotation was computed. [2018-09-20 15:31:59,270 INFO L426 ceAbstractionStarter]: For program point L23(line 23) no Hoare annotation was computed. [2018-09-20 15:31:59,271 INFO L426 ceAbstractionStarter]: For program point L25-2(line 25) no Hoare annotation was computed. [2018-09-20 15:31:59,271 INFO L426 ceAbstractionStarter]: For program point L23-1(line 23) no Hoare annotation was computed. [2018-09-20 15:31:59,271 INFO L426 ceAbstractionStarter]: For program point L23-2(line 23) no Hoare annotation was computed. [2018-09-20 15:31:59,271 INFO L426 ceAbstractionStarter]: For program point L23-3(line 23) no Hoare annotation was computed. [2018-09-20 15:31:59,271 INFO L426 ceAbstractionStarter]: For program point L36(lines 36 39) no Hoare annotation was computed. [2018-09-20 15:31:59,271 INFO L426 ceAbstractionStarter]: For program point L30(lines 30 39) no Hoare annotation was computed. [2018-09-20 15:31:59,271 INFO L426 ceAbstractionStarter]: For program point L24(line 24) no Hoare annotation was computed. [2018-09-20 15:31:59,271 INFO L426 ceAbstractionStarter]: For program point L22-1(lines 22 26) no Hoare annotation was computed. [2018-09-20 15:31:59,271 INFO L429 ceAbstractionStarter]: At program point L22-3(lines 22 26) the Hoare annotation is: true [2018-09-20 15:31:59,271 INFO L426 ceAbstractionStarter]: For program point L22-4(lines 19 40) no Hoare annotation was computed. [2018-09-20 15:31:59,272 INFO L429 ceAbstractionStarter]: At program point __fpclassify_floatENTRY(lines 19 40) the Hoare annotation is: true [2018-09-20 15:31:59,272 INFO L426 ceAbstractionStarter]: For program point __fpclassify_floatEXIT(lines 19 40) no Hoare annotation was computed. [2018-09-20 15:31:59,279 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.09 03:31:59 BoogieIcfgContainer [2018-09-20 15:31:59,279 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-20 15:31:59,280 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-09-20 15:31:59,280 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-09-20 15:31:59,280 INFO L276 PluginConnector]: Witness Printer initialized [2018-09-20 15:31:59,281 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 03:31:53" (3/4) ... [2018-09-20 15:31:59,284 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-09-20 15:31:59,291 INFO L316 RCFGBacktranslator]: Ignoring RootEdge to procedure isnan_float [2018-09-20 15:31:59,291 INFO L316 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-09-20 15:31:59,292 INFO L316 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-09-20 15:31:59,292 INFO L316 RCFGBacktranslator]: Ignoring RootEdge to procedure fmax_float [2018-09-20 15:31:59,292 INFO L316 RCFGBacktranslator]: Ignoring RootEdge to procedure __fpclassify_float [2018-09-20 15:31:59,297 INFO L850 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2018-09-20 15:31:59,297 INFO L850 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2018-09-20 15:31:59,298 INFO L850 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-09-20 15:31:59,354 INFO L145 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2018-09-20 15:31:59,355 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-09-20 15:31:59,356 INFO L168 Benchmark]: Toolchain (without parser) took 7288.18 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 215.5 MB). Free memory was 951.8 MB in the beginning and 1.2 GB in the end (delta: -245.1 MB). There was no memory consumed. Max. memory is 11.5 GB. [2018-09-20 15:31:59,358 INFO L168 Benchmark]: CDTParser took 0.19 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. [2018-09-20 15:31:59,359 INFO L168 Benchmark]: CACSL2BoogieTranslator took 326.45 ms. Allocated memory is still 1.0 GB. Free memory was 951.8 MB in the beginning and 941.1 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-09-20 15:31:59,359 INFO L168 Benchmark]: Boogie Preprocessor took 53.25 ms. Allocated memory is still 1.0 GB. Free memory is still 941.1 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-09-20 15:31:59,361 INFO L168 Benchmark]: RCFGBuilder took 616.72 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 156.8 MB). Free memory was 941.1 MB in the beginning and 1.1 GB in the end (delta: -183.8 MB). Peak memory consumption was 27.6 MB. Max. memory is 11.5 GB. [2018-09-20 15:31:59,362 INFO L168 Benchmark]: TraceAbstraction took 6209.06 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 58.7 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -72.0 MB). There was no memory consumed. Max. memory is 11.5 GB. [2018-09-20 15:31:59,363 INFO L168 Benchmark]: Witness Printer took 75.27 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-09-20 15:31:59,367 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 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 326.45 ms. Allocated memory is still 1.0 GB. Free memory was 951.8 MB in the beginning and 941.1 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 53.25 ms. Allocated memory is still 1.0 GB. Free memory is still 941.1 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 616.72 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 156.8 MB). Free memory was 941.1 MB in the beginning and 1.1 GB in the end (delta: -183.8 MB). Peak memory consumption was 27.6 MB. Max. memory is 11.5 GB. * TraceAbstraction took 6209.06 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 58.7 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -72.0 MB). There was no memory consumed. Max. memory is 11.5 GB. * Witness Printer took 75.27 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 65]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 45 locations, 1 error locations. SAFE Result, 6.1s OverallTime, 13 OverallIterations, 2 TraceHistogramMax, 2.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.4s HoareAnnotationTime, HoareTripleCheckerStatistics: 602 SDtfs, 31 SDslu, 1644 SDs, 0 SdLazy, 215 SolverSat, 10 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 555 GetRequests, 500 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 1.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=45occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 13 MinimizatonAttempts, 19 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 12 LocationsWithAnnotation, 28 PreInvPairs, 33 NumberOfFragments, 48 HoareAnnotationTreeSize, 28 FomulaSimplifications, 20 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 12 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 1.6s InterpolantComputationTime, 554 NumberOfCodeBlocks, 554 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 541 ConstructedInterpolants, 3 QuantifiedInterpolants, 37399 SizeOfPredicates, 15 NumberOfNonLiveVariables, 1205 ConjunctsInSsa, 63 ConjunctsInUnsatCore, 13 InterpolantComputations, 13 PerfectInterpolantSequences, 98/98 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...