/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/Ultimate.py --spec ../../../trunk/examples/svcomp/ReachSafety.prp --file ../../../trunk/examples/svcomp/float-newlib/float_req_bl_0720_true-unreach-call.c --full-output --architecture 32bit --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5eb3fea6 Calling Ultimate with: java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/float-newlib/float_req_bl_0720_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 2099bda96984d0e4445a07fd627008694b409440 --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false ................................................................................................................................................................................................................................................................................................. Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/float-newlib/float_req_bl_0720_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 2099bda96984d0e4445a07fd627008694b409440 --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false ................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-5eb3fea [2018-09-21 18:26:13,882 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-21 18:26:13,884 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-21 18:26:13,897 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-21 18:26:13,897 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-21 18:26:13,899 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-21 18:26:13,900 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-21 18:26:13,902 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-21 18:26:13,904 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-21 18:26:13,905 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-21 18:26:13,906 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-21 18:26:13,906 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-21 18:26:13,907 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-21 18:26:13,909 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-21 18:26:13,910 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-21 18:26:13,911 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-21 18:26:13,912 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-21 18:26:13,914 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-21 18:26:13,916 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-21 18:26:13,918 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-21 18:26:13,919 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-21 18:26:13,921 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-21 18:26:13,923 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-21 18:26:13,924 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-21 18:26:13,924 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-21 18:26:13,925 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-21 18:26:13,926 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-21 18:26:13,927 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-21 18:26:13,928 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-21 18:26:13,930 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-21 18:26:13,930 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-21 18:26:13,931 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-21 18:26:13,931 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-21 18:26:13,931 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-21 18:26:13,933 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-21 18:26:13,934 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-21 18:26:13,934 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-09-21 18:26:13,950 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-21 18:26:13,950 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-21 18:26:13,951 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-21 18:26:13,951 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-09-21 18:26:13,952 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-09-21 18:26:13,952 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-09-21 18:26:13,952 INFO L133 SettingsManager]: * Use SBE=true [2018-09-21 18:26:13,953 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-21 18:26:13,953 INFO L133 SettingsManager]: * sizeof long=4 [2018-09-21 18:26:13,953 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-21 18:26:13,953 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-09-21 18:26:13,954 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-21 18:26:13,955 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-21 18:26:13,955 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-21 18:26:13,955 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-21 18:26:13,955 INFO L133 SettingsManager]: * sizeof long double=12 [2018-09-21 18:26:13,955 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-21 18:26:13,956 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-21 18:26:13,956 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-21 18:26:13,956 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-21 18:26:13,956 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-21 18:26:13,956 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-21 18:26:13,957 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-21 18:26:13,958 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-21 18:26:13,958 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-21 18:26:13,958 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-21 18:26:13,958 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-09-21 18:26:13,959 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-21 18:26:13,959 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-21 18:26:13,959 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 -> 2099bda96984d0e4445a07fd627008694b409440 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false [2018-09-21 18:26:14,011 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-21 18:26:14,024 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-21 18:26:14,028 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-21 18:26:14,029 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-21 18:26:14,030 INFO L276 PluginConnector]: CDTParser initialized [2018-09-21 18:26:14,031 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_0720_true-unreach-call.c [2018-09-21 18:26:14,383 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ecf6327ca/46eca00abc274c488c461ddb6ec9311d/FLAGaa6781b8f [2018-09-21 18:26:14,570 INFO L277 CDTParser]: Found 1 translation units. [2018-09-21 18:26:14,572 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/float_req_bl_0720_true-unreach-call.c [2018-09-21 18:26:14,582 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ecf6327ca/46eca00abc274c488c461ddb6ec9311d/FLAGaa6781b8f [2018-09-21 18:26:14,615 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ecf6327ca/46eca00abc274c488c461ddb6ec9311d [2018-09-21 18:26:14,620 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-21 18:26:14,625 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-21 18:26:14,627 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-21 18:26:14,629 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-21 18:26:14,637 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-21 18:26:14,638 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 06:26:14" (1/1) ... [2018-09-21 18:26:14,641 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3aeb3c17 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:26:14, skipping insertion in model container [2018-09-21 18:26:14,642 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 06:26:14" (1/1) ... [2018-09-21 18:26:14,656 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-21 18:26:14,953 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-21 18:26:14,969 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-21 18:26:14,991 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-21 18:26:15,019 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:26:15 WrapperNode [2018-09-21 18:26:15,020 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-21 18:26:15,021 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-21 18:26:15,021 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-21 18:26:15,021 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-21 18:26:15,036 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:26:15" (1/1) ... [2018-09-21 18:26:15,037 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:26:15" (1/1) ... [2018-09-21 18:26:15,048 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:26:15" (1/1) ... [2018-09-21 18:26:15,048 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:26:15" (1/1) ... [2018-09-21 18:26:15,056 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:26:15" (1/1) ... [2018-09-21 18:26:15,066 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:26:15" (1/1) ... [2018-09-21 18:26:15,068 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:26:15" (1/1) ... [2018-09-21 18:26:15,077 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-21 18:26:15,077 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-21 18:26:15,077 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-21 18:26:15,077 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-21 18:26:15,081 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:26:15" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-21 18:26:15,138 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-21 18:26:15,138 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-21 18:26:15,138 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_float [2018-09-21 18:26:15,138 INFO L138 BoogieDeclarations]: Found implementation of procedure __ieee754_sqrtf [2018-09-21 18:26:15,139 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-21 18:26:15,139 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-09-21 18:26:15,139 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2018-09-21 18:26:15,139 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_float [2018-09-21 18:26:15,139 INFO L130 BoogieDeclarations]: Found specification of procedure __ieee754_sqrtf [2018-09-21 18:26:15,139 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-09-21 18:26:15,140 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2018-09-21 18:26:15,140 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-09-21 18:26:15,140 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-09-21 18:26:15,140 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-09-21 18:26:15,140 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2018-09-21 18:26:15,140 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-21 18:26:15,140 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-21 18:26:15,141 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-21 18:26:15,141 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2018-09-21 18:26:15,141 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~real [2018-09-21 18:26:15,807 INFO L373 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-21 18:26:15,808 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 06:26:15 BoogieIcfgContainer [2018-09-21 18:26:15,808 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-21 18:26:15,809 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-21 18:26:15,810 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-21 18:26:15,813 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-21 18:26:15,813 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 06:26:14" (1/3) ... [2018-09-21 18:26:15,814 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9c536a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 06:26:15, skipping insertion in model container [2018-09-21 18:26:15,814 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:26:15" (2/3) ... [2018-09-21 18:26:15,815 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9c536a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 06:26:15, skipping insertion in model container [2018-09-21 18:26:15,815 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 06:26:15" (3/3) ... [2018-09-21 18:26:15,817 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_0720_true-unreach-call.c [2018-09-21 18:26:15,828 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-21 18:26:15,838 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-21 18:26:15,889 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-21 18:26:15,890 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-21 18:26:15,890 INFO L382 AbstractCegarLoop]: Hoare is false [2018-09-21 18:26:15,891 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-21 18:26:15,891 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-21 18:26:15,891 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-21 18:26:15,891 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-21 18:26:15,891 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-21 18:26:15,891 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-21 18:26:15,912 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states. [2018-09-21 18:26:15,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-09-21 18:26:15,925 INFO L368 BasicCegarLoop]: Found error trace [2018-09-21 18:26:15,926 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-21 18:26:15,932 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-21 18:26:15,940 INFO L82 PathProgramCache]: Analyzing trace with hash 1682299779, now seen corresponding path program 1 times [2018-09-21 18:26:15,943 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-21 18:26:15,944 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-21 18:26:16,008 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-21 18:26:16,008 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-21 18:26:16,008 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-21 18:26:16,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-21 18:26:16,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-21 18:26:16,156 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-21 18:26:16,157 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-09-21 18:26:16,162 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-09-21 18:26:16,179 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-09-21 18:26:16,180 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-09-21 18:26:16,187 INFO L87 Difference]: Start difference. First operand 64 states. Second operand 2 states. [2018-09-21 18:26:16,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-21 18:26:16,211 INFO L93 Difference]: Finished difference Result 64 states and 74 transitions. [2018-09-21 18:26:16,212 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-09-21 18:26:16,213 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 21 [2018-09-21 18:26:16,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-21 18:26:16,228 INFO L225 Difference]: With dead ends: 64 [2018-09-21 18:26:16,228 INFO L226 Difference]: Without dead ends: 60 [2018-09-21 18:26:16,230 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-09-21 18:26:16,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2018-09-21 18:26:16,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2018-09-21 18:26:16,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2018-09-21 18:26:16,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 70 transitions. [2018-09-21 18:26:16,278 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 70 transitions. Word has length 21 [2018-09-21 18:26:16,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-21 18:26:16,278 INFO L480 AbstractCegarLoop]: Abstraction has 60 states and 70 transitions. [2018-09-21 18:26:16,279 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-09-21 18:26:16,279 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 70 transitions. [2018-09-21 18:26:16,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-09-21 18:26:16,280 INFO L368 BasicCegarLoop]: Found error trace [2018-09-21 18:26:16,280 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-21 18:26:16,281 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-21 18:26:16,281 INFO L82 PathProgramCache]: Analyzing trace with hash 859479452, now seen corresponding path program 1 times [2018-09-21 18:26:16,281 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-21 18:26:16,281 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-21 18:26:16,282 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-21 18:26:16,283 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-21 18:26:16,283 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-21 18:26:16,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-09-21 18:26:16,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-09-21 18:26:16,455 INFO L443 BasicCegarLoop]: Counterexample might be feasible [2018-09-21 18:26:16,500 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.09 06:26:16 BoogieIcfgContainer [2018-09-21 18:26:16,501 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-21 18:26:16,502 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-09-21 18:26:16,502 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-09-21 18:26:16,502 INFO L276 PluginConnector]: Witness Printer initialized [2018-09-21 18:26:16,503 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 06:26:15" (3/4) ... [2018-09-21 18:26:16,508 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-09-21 18:26:16,508 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-09-21 18:26:16,509 INFO L168 Benchmark]: Toolchain (without parser) took 1887.77 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 152.6 MB). Free memory was 951.8 MB in the beginning and 1.1 GB in the end (delta: -143.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 11.5 GB. [2018-09-21 18:26:16,512 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-09-21 18:26:16,513 INFO L168 Benchmark]: CACSL2BoogieTranslator took 393.39 ms. Allocated memory is still 1.0 GB. Free memory was 951.8 MB in the beginning and 941.1 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-09-21 18:26:16,515 INFO L168 Benchmark]: Boogie Preprocessor took 56.23 ms. Allocated memory is still 1.0 GB. Free memory was 941.1 MB in the beginning and 935.7 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-09-21 18:26:16,516 INFO L168 Benchmark]: RCFGBuilder took 731.22 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 152.6 MB). Free memory was 935.7 MB in the beginning and 1.1 GB in the end (delta: -185.9 MB). Peak memory consumption was 22.2 MB. Max. memory is 11.5 GB. [2018-09-21 18:26:16,519 INFO L168 Benchmark]: TraceAbstraction took 692.05 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 19.9 MB). Peak memory consumption was 19.9 MB. Max. memory is 11.5 GB. [2018-09-21 18:26:16,520 INFO L168 Benchmark]: Witness Printer took 6.37 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. [2018-09-21 18:26:16,528 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 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 393.39 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 56.23 ms. Allocated memory is still 1.0 GB. Free memory was 941.1 MB in the beginning and 935.7 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 731.22 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 152.6 MB). Free memory was 935.7 MB in the beginning and 1.1 GB in the end (delta: -185.9 MB). Peak memory consumption was 22.2 MB. Max. memory is 11.5 GB. * TraceAbstraction took 692.05 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 19.9 MB). Peak memory consumption was 19.9 MB. Max. memory is 11.5 GB. * Witness Printer took 6.37 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 96]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 13, overapproximation of someBinaryArithmeticFLOAToperation at line 30, overapproximation of bitwiseAnd at line 27. Possible FailurePath: [L15] static const float one_sqrt = 1.0, tiny_sqrt = 1.0e-30; VAL [\old(one_sqrt)=10, \old(tiny_sqrt)=8, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000] [L91] float x = 0.0f / 0.0f; VAL [one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000] [L92] CALL, EXPR __ieee754_sqrtf(x) VAL [\old(x)=9, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000] [L18] float z; [L19] __uint32_t r, hx; [L20] __int32_t ix, s, q, m, t, i; VAL [\old(x)=9, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000, x=9] [L23] FCALL ieee_float_shape_type gf_u; VAL [\old(x)=9, gf_u={7:0}, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000, x=9] [L24] FCALL gf_u.value = (x) VAL [\old(x)=9, gf_u={7:0}, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000, x=9] [L25] EXPR, FCALL gf_u.word VAL [\old(x)=9, gf_u={7:0}, gf_u.word=3, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000, x=9] [L25] (ix) = gf_u.word VAL [\old(x)=9, gf_u={7:0}, gf_u.word=3, ix=3, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000, x=9] [L25] FCALL (ix) = gf_u.word VAL [(ix) = gf_u.word=12, \old(x)=9, gf_u={7:0}, gf_u.word=3, ix=3, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000, x=9] [L26] COND FALSE !(0) VAL [\old(x)=9, ix=3, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000, x=9] [L27] hx = ix & 0x7fffffff VAL [\old(x)=9, ix=3, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000, x=9] [L29] COND TRUE !((hx) < 0x7f800000L) [L30] RET return x * x + x; VAL [\old(x)=9, hx=2139095040, ix=3, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000, x=9] [L92] EXPR __ieee754_sqrtf(x) VAL [__ieee754_sqrtf(x)=5, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000, x=9] [L92] float res = __ieee754_sqrtf(x); [L95] CALL, EXPR isnan_float(res) VAL [\old(x)=5, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000] [L13] RET return x != x; VAL [\old(x)=5, \result=0, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000, x=5] [L95] EXPR isnan_float(res) VAL [isnan_float(res)=0, one_sqrt=1, res=5, tiny_sqrt=1/1000000000000000000000000000000, x=9] [L95] COND TRUE !isnan_float(res) [L96] __VERIFIER_error() VAL [one_sqrt=1, res=5, tiny_sqrt=1/1000000000000000000000000000000, x=9] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 64 locations, 1 error locations. UNSAFE Result, 0.6s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 74 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=64occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 51 NumberOfCodeBlocks, 51 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 20 ConstructedInterpolants, 0 QuantifiedInterpolants, 400 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.23-5eb3fea [2018-09-21 18:26:18,894 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-21 18:26:18,896 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-21 18:26:18,909 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-21 18:26:18,909 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-21 18:26:18,910 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-21 18:26:18,912 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-21 18:26:18,914 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-21 18:26:18,916 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-21 18:26:18,917 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-21 18:26:18,918 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-21 18:26:18,918 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-21 18:26:18,919 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-21 18:26:18,920 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-21 18:26:18,921 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-21 18:26:18,922 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-21 18:26:18,923 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-21 18:26:18,925 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-21 18:26:18,927 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-21 18:26:18,929 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-21 18:26:18,930 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-21 18:26:18,932 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-21 18:26:18,934 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-21 18:26:18,934 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-21 18:26:18,934 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-21 18:26:18,936 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-21 18:26:18,936 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-21 18:26:18,937 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-21 18:26:18,938 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-21 18:26:18,940 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-21 18:26:18,940 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-21 18:26:18,941 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-21 18:26:18,941 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-21 18:26:18,941 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-21 18:26:18,943 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-21 18:26:18,943 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-21 18:26:18,944 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2018-09-21 18:26:18,959 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-21 18:26:18,959 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-21 18:26:18,960 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-21 18:26:18,960 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-09-21 18:26:18,961 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-09-21 18:26:18,961 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-09-21 18:26:18,962 INFO L133 SettingsManager]: * Use SBE=true [2018-09-21 18:26:18,962 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-21 18:26:18,962 INFO L133 SettingsManager]: * sizeof long=4 [2018-09-21 18:26:18,962 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-09-21 18:26:18,962 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-21 18:26:18,963 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-21 18:26:18,963 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-21 18:26:18,963 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-21 18:26:18,963 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-09-21 18:26:18,963 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-09-21 18:26:18,965 INFO L133 SettingsManager]: * sizeof long double=12 [2018-09-21 18:26:18,965 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-21 18:26:18,965 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-21 18:26:18,965 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-21 18:26:18,965 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-21 18:26:18,966 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-21 18:26:18,966 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-21 18:26:18,966 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-21 18:26:18,966 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-21 18:26:18,967 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-21 18:26:18,967 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-21 18:26:18,967 INFO L133 SettingsManager]: * Trace refinement strategy=WOLF [2018-09-21 18:26:18,967 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-21 18:26:18,968 INFO L133 SettingsManager]: * Command for external solver=cvc4nyu --tear-down-incremental --rewrite-divk --print-success --lang smt [2018-09-21 18:26:18,968 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-09-21 18:26:18,969 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 -> 2099bda96984d0e4445a07fd627008694b409440 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false [2018-09-21 18:26:19,023 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-21 18:26:19,040 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-21 18:26:19,046 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-21 18:26:19,048 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-21 18:26:19,048 INFO L276 PluginConnector]: CDTParser initialized [2018-09-21 18:26:19,049 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_0720_true-unreach-call.c [2018-09-21 18:26:19,393 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3283cbe5d/d497cada92ce41fd82e31f9992b50140/FLAG917e11c59 [2018-09-21 18:26:19,590 INFO L277 CDTParser]: Found 1 translation units. [2018-09-21 18:26:19,591 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/float_req_bl_0720_true-unreach-call.c [2018-09-21 18:26:19,599 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3283cbe5d/d497cada92ce41fd82e31f9992b50140/FLAG917e11c59 [2018-09-21 18:26:19,623 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3283cbe5d/d497cada92ce41fd82e31f9992b50140 [2018-09-21 18:26:19,628 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-21 18:26:19,633 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-21 18:26:19,636 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-21 18:26:19,636 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-21 18:26:19,644 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-21 18:26:19,645 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 06:26:19" (1/1) ... [2018-09-21 18:26:19,649 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2947b70e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:26:19, skipping insertion in model container [2018-09-21 18:26:19,649 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 06:26:19" (1/1) ... [2018-09-21 18:26:19,663 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-21 18:26:19,949 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-21 18:26:19,974 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-21 18:26:20,023 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-21 18:26:20,079 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:26:20 WrapperNode [2018-09-21 18:26:20,080 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-21 18:26:20,081 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-21 18:26:20,081 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-21 18:26:20,081 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-21 18:26:20,100 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:26:20" (1/1) ... [2018-09-21 18:26:20,100 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:26:20" (1/1) ... [2018-09-21 18:26:20,116 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:26:20" (1/1) ... [2018-09-21 18:26:20,116 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:26:20" (1/1) ... [2018-09-21 18:26:20,139 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:26:20" (1/1) ... [2018-09-21 18:26:20,154 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:26:20" (1/1) ... [2018-09-21 18:26:20,160 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:26:20" (1/1) ... [2018-09-21 18:26:20,170 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-21 18:26:20,170 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-21 18:26:20,173 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-21 18:26:20,174 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-21 18:26:20,175 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:26:20" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-21 18:26:20,336 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-21 18:26:20,336 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-21 18:26:20,336 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_float [2018-09-21 18:26:20,337 INFO L138 BoogieDeclarations]: Found implementation of procedure __ieee754_sqrtf [2018-09-21 18:26:20,337 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-21 18:26:20,337 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-09-21 18:26:20,337 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2018-09-21 18:26:20,337 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_float [2018-09-21 18:26:20,337 INFO L130 BoogieDeclarations]: Found specification of procedure __ieee754_sqrtf [2018-09-21 18:26:20,337 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-09-21 18:26:20,338 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2018-09-21 18:26:20,338 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2018-09-21 18:26:20,338 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-09-21 18:26:20,338 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2018-09-21 18:26:20,338 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2018-09-21 18:26:20,338 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-21 18:26:20,339 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-21 18:26:20,339 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-21 18:26:20,339 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2018-09-21 18:26:20,339 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intFLOATTYPE4 [2018-09-21 18:26:20,747 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-21 18:26:20,769 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-21 18:26:21,530 INFO L373 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-21 18:26:21,530 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 06:26:21 BoogieIcfgContainer [2018-09-21 18:26:21,530 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-21 18:26:21,532 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-21 18:26:21,532 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-21 18:26:21,535 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-21 18:26:21,536 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 06:26:19" (1/3) ... [2018-09-21 18:26:21,537 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72502bb1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 06:26:21, skipping insertion in model container [2018-09-21 18:26:21,537 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:26:20" (2/3) ... [2018-09-21 18:26:21,537 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72502bb1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 06:26:21, skipping insertion in model container [2018-09-21 18:26:21,537 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 06:26:21" (3/3) ... [2018-09-21 18:26:21,539 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_0720_true-unreach-call.c [2018-09-21 18:26:21,549 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-21 18:26:21,558 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-21 18:26:21,605 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-21 18:26:21,605 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-21 18:26:21,606 INFO L382 AbstractCegarLoop]: Hoare is false [2018-09-21 18:26:21,606 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-21 18:26:21,606 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-21 18:26:21,606 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-21 18:26:21,606 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-21 18:26:21,607 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-21 18:26:21,607 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-21 18:26:21,625 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states. [2018-09-21 18:26:21,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-09-21 18:26:21,637 INFO L368 BasicCegarLoop]: Found error trace [2018-09-21 18:26:21,638 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-21 18:26:21,640 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-21 18:26:21,646 INFO L82 PathProgramCache]: Analyzing trace with hash -1797270075, now seen corresponding path program 1 times [2018-09-21 18:26:21,651 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-21 18:26:21,652 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2018-09-21 18:26:21,668 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2018-09-21 18:26:21,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-21 18:26:21,825 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-21 18:26:21,847 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-21 18:26:21,848 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-21 18:26:21,865 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-21 18:26:21,866 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-09-21 18:26:21,870 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-09-21 18:26:21,884 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-09-21 18:26:21,885 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-09-21 18:26:21,887 INFO L87 Difference]: Start difference. First operand 63 states. Second operand 2 states. [2018-09-21 18:26:21,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-21 18:26:21,908 INFO L93 Difference]: Finished difference Result 63 states and 73 transitions. [2018-09-21 18:26:21,908 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-09-21 18:26:21,910 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 20 [2018-09-21 18:26:21,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-21 18:26:21,922 INFO L225 Difference]: With dead ends: 63 [2018-09-21 18:26:21,923 INFO L226 Difference]: Without dead ends: 59 [2018-09-21 18:26:21,925 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-09-21 18:26:21,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2018-09-21 18:26:21,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2018-09-21 18:26:21,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2018-09-21 18:26:21,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 69 transitions. [2018-09-21 18:26:21,970 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 69 transitions. Word has length 20 [2018-09-21 18:26:21,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-21 18:26:21,971 INFO L480 AbstractCegarLoop]: Abstraction has 59 states and 69 transitions. [2018-09-21 18:26:21,971 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-09-21 18:26:21,971 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 69 transitions. [2018-09-21 18:26:21,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-09-21 18:26:21,972 INFO L368 BasicCegarLoop]: Found error trace [2018-09-21 18:26:21,973 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] [2018-09-21 18:26:21,973 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-21 18:26:21,973 INFO L82 PathProgramCache]: Analyzing trace with hash 252091433, now seen corresponding path program 1 times [2018-09-21 18:26:21,974 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-21 18:26:21,974 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2018-09-21 18:26:21,979 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-21 18:26:22,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-21 18:26:22,121 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-21 18:26:24,038 WARN L178 SmtUtils]: Spent 400.00 ms on a formula simplification that was a NOOP. DAG size: 6 [2018-09-21 18:26:27,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-21 18:26:27,367 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-21 18:26:27,377 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-21 18:26:27,378 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2018-09-21 18:26:27,379 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-21 18:26:27,380 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-21 18:26:27,380 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2018-09-21 18:26:27,381 INFO L87 Difference]: Start difference. First operand 59 states and 69 transitions. Second operand 9 states. [2018-09-21 18:26:30,329 WARN L178 SmtUtils]: Spent 914.00 ms on a formula simplification that was a NOOP. DAG size: 9 [2018-09-21 18:26:33,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-21 18:26:33,973 INFO L93 Difference]: Finished difference Result 64 states and 74 transitions. [2018-09-21 18:26:33,974 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-09-21 18:26:33,974 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 29 [2018-09-21 18:26:33,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-21 18:26:33,976 INFO L225 Difference]: With dead ends: 64 [2018-09-21 18:26:33,977 INFO L226 Difference]: Without dead ends: 59 [2018-09-21 18:26:33,978 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 7.7s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2018-09-21 18:26:33,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2018-09-21 18:26:33,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2018-09-21 18:26:33,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2018-09-21 18:26:33,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 68 transitions. [2018-09-21 18:26:33,990 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 68 transitions. Word has length 29 [2018-09-21 18:26:33,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-21 18:26:33,990 INFO L480 AbstractCegarLoop]: Abstraction has 59 states and 68 transitions. [2018-09-21 18:26:33,990 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-21 18:26:33,990 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 68 transitions. [2018-09-21 18:26:33,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-09-21 18:26:33,992 INFO L368 BasicCegarLoop]: Found error trace [2018-09-21 18:26:33,992 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-21 18:26:33,992 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-21 18:26:33,993 INFO L82 PathProgramCache]: Analyzing trace with hash -839260789, now seen corresponding path program 1 times [2018-09-21 18:26:33,993 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-21 18:26:33,993 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2018-09-21 18:26:34,002 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-21 18:26:34,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-21 18:26:34,052 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-21 18:26:34,117 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 8 [2018-09-21 18:26:34,122 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2018-09-21 18:26:34,122 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-21 18:26:34,127 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-21 18:26:34,152 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-09-21 18:26:34,153 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:21, output treesize:21 [2018-09-21 18:26:34,200 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2018-09-21 18:26:34,216 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2018-09-21 18:26:34,216 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-21 18:26:34,242 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-21 18:26:34,249 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-09-21 18:26:34,249 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:29, output treesize:9 [2018-09-21 18:26:34,709 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-21 18:26:34,710 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-21 18:26:34,726 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-21 18:26:34,726 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2018-09-21 18:26:34,726 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-21 18:26:34,727 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-21 18:26:34,727 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2018-09-21 18:26:34,727 INFO L87 Difference]: Start difference. First operand 59 states and 68 transitions. Second operand 9 states. [2018-09-21 18:26:35,677 WARN L178 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2018-09-21 18:26:37,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-21 18:26:37,117 INFO L93 Difference]: Finished difference Result 67 states and 76 transitions. [2018-09-21 18:26:37,118 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-09-21 18:26:37,118 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 30 [2018-09-21 18:26:37,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-21 18:26:37,121 INFO L225 Difference]: With dead ends: 67 [2018-09-21 18:26:37,122 INFO L226 Difference]: Without dead ends: 65 [2018-09-21 18:26:37,122 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=65, Invalid=207, Unknown=0, NotChecked=0, Total=272 [2018-09-21 18:26:37,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2018-09-21 18:26:37,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 59. [2018-09-21 18:26:37,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2018-09-21 18:26:37,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 67 transitions. [2018-09-21 18:26:37,131 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 67 transitions. Word has length 30 [2018-09-21 18:26:37,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-21 18:26:37,132 INFO L480 AbstractCegarLoop]: Abstraction has 59 states and 67 transitions. [2018-09-21 18:26:37,132 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-21 18:26:37,132 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 67 transitions. [2018-09-21 18:26:37,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-09-21 18:26:37,133 INFO L368 BasicCegarLoop]: Found error trace [2018-09-21 18:26:37,133 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-21 18:26:37,134 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-21 18:26:37,134 INFO L82 PathProgramCache]: Analyzing trace with hash -1097495323, now seen corresponding path program 1 times [2018-09-21 18:26:37,134 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-21 18:26:37,135 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) [2018-09-21 18:26:37,148 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2018-09-21 18:26:37,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-21 18:26:37,393 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-21 18:26:40,968 WARN L178 SmtUtils]: Spent 861.00 ms on a formula simplification that was a NOOP. DAG size: 6 [2018-09-21 18:26:44,682 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-21 18:26:44,683 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-21 18:26:44,695 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-21 18:26:44,695 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2018-09-21 18:26:44,696 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-21 18:26:44,696 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-21 18:26:44,696 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2018-09-21 18:26:44,697 INFO L87 Difference]: Start difference. First operand 59 states and 67 transitions. Second operand 9 states. [2018-09-21 18:26:50,258 WARN L178 SmtUtils]: Spent 2.20 s on a formula simplification that was a NOOP. DAG size: 9 [2018-09-21 18:26:54,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-21 18:26:54,036 INFO L93 Difference]: Finished difference Result 64 states and 72 transitions. [2018-09-21 18:26:54,039 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-09-21 18:26:54,040 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 31 [2018-09-21 18:26:54,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-21 18:26:54,041 INFO L225 Difference]: With dead ends: 64 [2018-09-21 18:26:54,042 INFO L226 Difference]: Without dead ends: 59 [2018-09-21 18:26:54,042 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 12.9s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2018-09-21 18:26:54,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2018-09-21 18:26:54,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2018-09-21 18:26:54,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2018-09-21 18:26:54,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 66 transitions. [2018-09-21 18:26:54,050 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 66 transitions. Word has length 31 [2018-09-21 18:26:54,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-21 18:26:54,050 INFO L480 AbstractCegarLoop]: Abstraction has 59 states and 66 transitions. [2018-09-21 18:26:54,050 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-21 18:26:54,050 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 66 transitions. [2018-09-21 18:26:54,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2018-09-21 18:26:54,052 INFO L368 BasicCegarLoop]: Found error trace [2018-09-21 18:26:54,052 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-21 18:26:54,053 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-21 18:26:54,053 INFO L82 PathProgramCache]: Analyzing trace with hash 1953998500, now seen corresponding path program 1 times [2018-09-21 18:26:54,054 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-21 18:26:54,054 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 6 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with mathsat -unsat_core_generation=3 [2018-09-21 18:26:54,059 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-21 18:26:54,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-21 18:26:54,115 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-21 18:26:54,141 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 8 [2018-09-21 18:26:54,148 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2018-09-21 18:26:54,149 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-21 18:26:54,154 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-21 18:26:54,166 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-09-21 18:26:54,167 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:21, output treesize:21 [2018-09-21 18:26:54,197 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2018-09-21 18:26:54,204 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2018-09-21 18:26:54,205 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-21 18:26:54,208 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-21 18:26:54,212 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-09-21 18:26:54,212 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:29, output treesize:9 [2018-09-21 18:26:54,417 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-21 18:26:54,417 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-21 18:26:54,427 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-21 18:26:54,427 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2018-09-21 18:26:54,428 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-21 18:26:54,428 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-21 18:26:54,429 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2018-09-21 18:26:54,429 INFO L87 Difference]: Start difference. First operand 59 states and 66 transitions. Second operand 9 states. [2018-09-21 18:26:55,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-21 18:26:55,225 INFO L93 Difference]: Finished difference Result 55 states and 63 transitions. [2018-09-21 18:26:55,226 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-09-21 18:26:55,226 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 50 [2018-09-21 18:26:55,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-21 18:26:55,227 INFO L225 Difference]: With dead ends: 55 [2018-09-21 18:26:55,227 INFO L226 Difference]: Without dead ends: 0 [2018-09-21 18:26:55,228 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=65, Invalid=207, Unknown=0, NotChecked=0, Total=272 [2018-09-21 18:26:55,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-09-21 18:26:55,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-09-21 18:26:55,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-09-21 18:26:55,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-09-21 18:26:55,230 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 50 [2018-09-21 18:26:55,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-21 18:26:55,230 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-09-21 18:26:55,230 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-21 18:26:55,230 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-09-21 18:26:55,230 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-09-21 18:26:55,236 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.09 06:26:55 BoogieIcfgContainer [2018-09-21 18:26:55,237 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-21 18:26:55,237 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-09-21 18:26:55,237 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-09-21 18:26:55,237 INFO L276 PluginConnector]: Witness Printer initialized [2018-09-21 18:26:55,238 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 06:26:21" (3/4) ... [2018-09-21 18:26:55,242 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-09-21 18:26:55,250 INFO L316 RCFGBacktranslator]: Ignoring RootEdge to procedure isnan_float [2018-09-21 18:26:55,250 INFO L316 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-09-21 18:26:55,251 INFO L316 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-09-21 18:26:55,251 INFO L316 RCFGBacktranslator]: Ignoring RootEdge to procedure __ieee754_sqrtf [2018-09-21 18:26:55,257 INFO L850 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2018-09-21 18:26:55,257 INFO L850 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2018-09-21 18:26:55,258 INFO L850 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2018-09-21 18:26:55,329 INFO L145 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2018-09-21 18:26:55,329 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-09-21 18:26:55,330 INFO L168 Benchmark]: Toolchain (without parser) took 35702.05 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 110.6 MB). Free memory was 954.5 MB in the beginning and 842.2 MB in the end (delta: 112.3 MB). Peak memory consumption was 222.9 MB. Max. memory is 11.5 GB. [2018-09-21 18:26:55,334 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-09-21 18:26:55,334 INFO L168 Benchmark]: CACSL2BoogieTranslator took 444.10 ms. Allocated memory is still 1.0 GB. Free memory was 954.5 MB in the beginning and 943.8 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-09-21 18:26:55,335 INFO L168 Benchmark]: Boogie Preprocessor took 89.15 ms. Allocated memory is still 1.0 GB. Free memory was 943.8 MB in the beginning and 938.4 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-09-21 18:26:55,337 INFO L168 Benchmark]: RCFGBuilder took 1360.44 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 110.6 MB). Free memory was 938.4 MB in the beginning and 1.1 GB in the end (delta: -133.7 MB). Peak memory consumption was 22.3 MB. Max. memory is 11.5 GB. [2018-09-21 18:26:55,337 INFO L168 Benchmark]: TraceAbstraction took 33704.96 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 849.3 MB in the end (delta: 222.9 MB). Peak memory consumption was 222.9 MB. Max. memory is 11.5 GB. [2018-09-21 18:26:55,342 INFO L168 Benchmark]: Witness Printer took 92.51 ms. Allocated memory is still 1.1 GB. Free memory was 849.3 MB in the beginning and 842.2 MB in the end (delta: 7.0 MB). Peak memory consumption was 7.0 MB. Max. memory is 11.5 GB. [2018-09-21 18:26:55,350 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 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 444.10 ms. Allocated memory is still 1.0 GB. Free memory was 954.5 MB in the beginning and 943.8 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 89.15 ms. Allocated memory is still 1.0 GB. Free memory was 943.8 MB in the beginning and 938.4 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 1360.44 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 110.6 MB). Free memory was 938.4 MB in the beginning and 1.1 GB in the end (delta: -133.7 MB). Peak memory consumption was 22.3 MB. Max. memory is 11.5 GB. * TraceAbstraction took 33704.96 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 849.3 MB in the end (delta: 222.9 MB). Peak memory consumption was 222.9 MB. Max. memory is 11.5 GB. * Witness Printer took 92.51 ms. Allocated memory is still 1.1 GB. Free memory was 849.3 MB in the beginning and 842.2 MB in the end (delta: 7.0 MB). Peak memory consumption was 7.0 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 96]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 63 locations, 1 error locations. SAFE Result, 33.6s OverallTime, 5 OverallIterations, 1 TraceHistogramMax, 19.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 294 SDtfs, 329 SDslu, 1188 SDs, 0 SdLazy, 302 SolverSat, 19 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 8.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 179 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 22.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=63occurred 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, 5 MinimizatonAttempts, 6 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 13.5s InterpolantComputationTime, 160 NumberOfCodeBlocks, 160 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 155 ConstructedInterpolants, 28 QuantifiedInterpolants, 38899 SizeOfPredicates, 24 NumberOfNonLiveVariables, 354 ConjunctsInSsa, 41 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...