/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/Ultimate.py --spec ../../../trunk/examples/svcomp/ReachSafety.prp --file ../../../trunk/examples/svcomp/float-newlib/float_req_bl_1012b_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_1012b_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 bc9c2d8006a021647ffc0d9b742af3213165b422 --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_1012b_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 bc9c2d8006a021647ffc0d9b742af3213165b422 --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 18:37:44,109 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-21 18:37:44,111 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-21 18:37:44,124 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-21 18:37:44,124 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-21 18:37:44,125 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-21 18:37:44,126 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-21 18:37:44,128 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-21 18:37:44,130 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-21 18:37:44,131 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-21 18:37:44,132 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-21 18:37:44,132 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-21 18:37:44,133 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-21 18:37:44,134 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-21 18:37:44,135 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-21 18:37:44,136 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-21 18:37:44,137 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-21 18:37:44,139 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-21 18:37:44,141 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-21 18:37:44,142 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-21 18:37:44,143 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-21 18:37:44,145 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-21 18:37:44,148 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-21 18:37:44,148 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-21 18:37:44,148 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-21 18:37:44,150 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-21 18:37:44,151 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-21 18:37:44,152 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-21 18:37:44,152 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-21 18:37:44,155 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-21 18:37:44,156 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-21 18:37:44,159 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-21 18:37:44,159 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-21 18:37:44,159 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-21 18:37:44,160 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-21 18:37:44,164 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-21 18:37:44,164 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-09-21 18:37:44,196 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-21 18:37:44,196 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-21 18:37:44,198 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-21 18:37:44,199 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-09-21 18:37:44,200 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-09-21 18:37:44,200 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-09-21 18:37:44,200 INFO L133 SettingsManager]: * Use SBE=true [2018-09-21 18:37:44,200 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-21 18:37:44,200 INFO L133 SettingsManager]: * sizeof long=4 [2018-09-21 18:37:44,201 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-21 18:37:44,201 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-09-21 18:37:44,201 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-21 18:37:44,201 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-21 18:37:44,201 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-21 18:37:44,201 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-21 18:37:44,202 INFO L133 SettingsManager]: * sizeof long double=12 [2018-09-21 18:37:44,202 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-21 18:37:44,202 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-21 18:37:44,202 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-21 18:37:44,203 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-21 18:37:44,204 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-21 18:37:44,204 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-21 18:37:44,204 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-21 18:37:44,204 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-21 18:37:44,204 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-21 18:37:44,205 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-21 18:37:44,205 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-09-21 18:37:44,205 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-21 18:37:44,205 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-21 18:37:44,205 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 -> bc9c2d8006a021647ffc0d9b742af3213165b422 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 18:37:44,279 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-21 18:37:44,299 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-21 18:37:44,304 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-21 18:37:44,306 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-21 18:37:44,306 INFO L276 PluginConnector]: CDTParser initialized [2018-09-21 18:37:44,307 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1012b_true-unreach-call.c [2018-09-21 18:37:44,675 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e5386d122/2ab3ec47f5ed43cbabd92299d3d7e4d3/FLAGd30b1037a [2018-09-21 18:37:44,840 INFO L277 CDTParser]: Found 1 translation units. [2018-09-21 18:37:44,841 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/float_req_bl_1012b_true-unreach-call.c [2018-09-21 18:37:44,849 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e5386d122/2ab3ec47f5ed43cbabd92299d3d7e4d3/FLAGd30b1037a [2018-09-21 18:37:44,867 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e5386d122/2ab3ec47f5ed43cbabd92299d3d7e4d3 [2018-09-21 18:37:44,871 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-21 18:37:44,875 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-21 18:37:44,876 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-21 18:37:44,876 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-21 18:37:44,885 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-21 18:37:44,886 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 06:37:44" (1/1) ... [2018-09-21 18:37:44,889 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6a7968e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:37:44, skipping insertion in model container [2018-09-21 18:37:44,890 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 06:37:44" (1/1) ... [2018-09-21 18:37:44,902 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-21 18:37:45,127 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-21 18:37:45,145 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-21 18:37:45,162 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-21 18:37:45,200 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:37:45 WrapperNode [2018-09-21 18:37:45,201 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-21 18:37:45,202 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-21 18:37:45,202 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-21 18:37:45,202 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-21 18:37:45,219 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:37:45" (1/1) ... [2018-09-21 18:37:45,219 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:37:45" (1/1) ... [2018-09-21 18:37:45,232 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:37:45" (1/1) ... [2018-09-21 18:37:45,233 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:37:45" (1/1) ... [2018-09-21 18:37:45,240 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:37:45" (1/1) ... [2018-09-21 18:37:45,246 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:37:45" (1/1) ... [2018-09-21 18:37:45,247 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:37:45" (1/1) ... [2018-09-21 18:37:45,250 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-21 18:37:45,250 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-21 18:37:45,251 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-21 18:37:45,251 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-21 18:37:45,252 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:37:45" (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 18:37:45,335 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-21 18:37:45,336 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-21 18:37:45,336 INFO L138 BoogieDeclarations]: Found implementation of procedure fabs_float [2018-09-21 18:37:45,336 INFO L138 BoogieDeclarations]: Found implementation of procedure isinf_float [2018-09-21 18:37:45,337 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-21 18:37:45,337 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-09-21 18:37:45,339 INFO L130 BoogieDeclarations]: Found specification of procedure fabs_float [2018-09-21 18:37:45,339 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-09-21 18:37:45,340 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2018-09-21 18:37:45,340 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-09-21 18:37:45,340 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-09-21 18:37:45,340 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-09-21 18:37:45,340 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2018-09-21 18:37:45,341 INFO L130 BoogieDeclarations]: Found specification of procedure isinf_float [2018-09-21 18:37:45,341 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-21 18:37:45,341 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-21 18:37:45,341 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-21 18:37:45,341 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2018-09-21 18:37:45,341 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~real [2018-09-21 18:37:46,031 INFO L373 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-21 18:37:46,032 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 06:37:46 BoogieIcfgContainer [2018-09-21 18:37:46,032 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-21 18:37:46,033 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-21 18:37:46,033 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-21 18:37:46,037 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-21 18:37:46,037 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 06:37:44" (1/3) ... [2018-09-21 18:37:46,038 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25590958 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 06:37:46, skipping insertion in model container [2018-09-21 18:37:46,038 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:37:45" (2/3) ... [2018-09-21 18:37:46,038 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25590958 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 06:37:46, skipping insertion in model container [2018-09-21 18:37:46,038 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 06:37:46" (3/3) ... [2018-09-21 18:37:46,040 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_1012b_true-unreach-call.c [2018-09-21 18:37:46,051 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-21 18:37:46,059 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-21 18:37:46,102 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-21 18:37:46,103 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-21 18:37:46,103 INFO L382 AbstractCegarLoop]: Hoare is false [2018-09-21 18:37:46,103 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-21 18:37:46,104 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-21 18:37:46,104 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-21 18:37:46,104 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-21 18:37:46,104 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-21 18:37:46,104 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-21 18:37:46,121 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states. [2018-09-21 18:37:46,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-09-21 18:37:46,132 INFO L368 BasicCegarLoop]: Found error trace [2018-09-21 18:37:46,134 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] [2018-09-21 18:37:46,136 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-21 18:37:46,142 INFO L82 PathProgramCache]: Analyzing trace with hash -2143918399, now seen corresponding path program 1 times [2018-09-21 18:37:46,144 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-21 18:37:46,145 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-21 18:37:46,202 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-21 18:37:46,203 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-21 18:37:46,203 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-21 18:37:46,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-21 18:37:46,292 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 18:37:46,294 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-21 18:37:46,295 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-09-21 18:37:46,299 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-09-21 18:37:46,311 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-09-21 18:37:46,312 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-09-21 18:37:46,314 INFO L87 Difference]: Start difference. First operand 55 states. Second operand 2 states. [2018-09-21 18:37:46,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-21 18:37:46,334 INFO L93 Difference]: Finished difference Result 55 states and 54 transitions. [2018-09-21 18:37:46,334 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-09-21 18:37:46,336 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 23 [2018-09-21 18:37:46,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-21 18:37:46,347 INFO L225 Difference]: With dead ends: 55 [2018-09-21 18:37:46,347 INFO L226 Difference]: Without dead ends: 51 [2018-09-21 18:37:46,349 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 18:37:46,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2018-09-21 18:37:46,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2018-09-21 18:37:46,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2018-09-21 18:37:46,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 50 transitions. [2018-09-21 18:37:46,395 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 50 transitions. Word has length 23 [2018-09-21 18:37:46,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-21 18:37:46,395 INFO L480 AbstractCegarLoop]: Abstraction has 51 states and 50 transitions. [2018-09-21 18:37:46,395 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-09-21 18:37:46,395 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 50 transitions. [2018-09-21 18:37:46,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2018-09-21 18:37:46,397 INFO L368 BasicCegarLoop]: Found error trace [2018-09-21 18:37:46,397 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 18:37:46,398 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-21 18:37:46,398 INFO L82 PathProgramCache]: Analyzing trace with hash -1454510497, now seen corresponding path program 1 times [2018-09-21 18:37:46,398 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-21 18:37:46,398 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-21 18:37:46,400 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-21 18:37:46,400 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-21 18:37:46,400 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-21 18:37:46,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-09-21 18:37:46,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-09-21 18:37:46,558 INFO L443 BasicCegarLoop]: Counterexample might be feasible [2018-09-21 18:37:46,595 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.09 06:37:46 BoogieIcfgContainer [2018-09-21 18:37:46,595 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-21 18:37:46,596 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-09-21 18:37:46,596 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-09-21 18:37:46,596 INFO L276 PluginConnector]: Witness Printer initialized [2018-09-21 18:37:46,597 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 06:37:46" (3/4) ... [2018-09-21 18:37:46,601 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-09-21 18:37:46,601 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-09-21 18:37:46,602 INFO L168 Benchmark]: Toolchain (without parser) took 1730.00 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 133.2 MB). Free memory was 951.9 MB in the beginning and 1.1 GB in the end (delta: -126.1 MB). Peak memory consumption was 7.1 MB. Max. memory is 11.5 GB. [2018-09-21 18:37:46,604 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-09-21 18:37:46,604 INFO L168 Benchmark]: CACSL2BoogieTranslator took 325.31 ms. Allocated memory is still 1.0 GB. Free memory was 951.9 MB in the beginning and 941.0 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.9 MB. Max. memory is 11.5 GB. [2018-09-21 18:37:46,605 INFO L168 Benchmark]: Boogie Preprocessor took 48.56 ms. Allocated memory is still 1.0 GB. Free memory is still 941.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-09-21 18:37:46,606 INFO L168 Benchmark]: RCFGBuilder took 782.00 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 133.2 MB). Free memory was 941.0 MB in the beginning and 1.1 GB in the end (delta: -165.6 MB). Peak memory consumption was 28.7 MB. Max. memory is 11.5 GB. [2018-09-21 18:37:46,607 INFO L168 Benchmark]: TraceAbstraction took 562.26 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: 28.6 MB). Peak memory consumption was 28.6 MB. Max. memory is 11.5 GB. [2018-09-21 18:37:46,608 INFO L168 Benchmark]: Witness Printer took 5.07 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-09-21 18:37:46,612 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 325.31 ms. Allocated memory is still 1.0 GB. Free memory was 951.9 MB in the beginning and 941.0 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.9 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 48.56 ms. Allocated memory is still 1.0 GB. Free memory is still 941.0 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 782.00 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 133.2 MB). Free memory was 941.0 MB in the beginning and 1.1 GB in the end (delta: -165.6 MB). Peak memory consumption was 28.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 562.26 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: 28.6 MB). Peak memory consumption was 28.6 MB. Max. memory is 11.5 GB. * Witness Printer took 5.07 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 51]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryArithmeticFLOAToperation at line 46, overapproximation of bitwiseAnd at line 34. Possible FailurePath: [L46] float x = -1.0f / 0.0f; [L47] CALL, EXPR fabs_float(x) VAL [\old(x)=13] [L12] __uint32_t ix; VAL [\old(x)=13, x=13] [L14] FCALL ieee_float_shape_type gf_u; VAL [\old(x)=13, gf_u={14:0}, x=13] [L15] FCALL gf_u.value = (x) VAL [\old(x)=13, gf_u={14:0}, x=13] [L16] EXPR, FCALL gf_u.word VAL [\old(x)=13, gf_u={14:0}, gf_u.word=11, x=13] [L16] (ix) = gf_u.word VAL [\old(x)=13, gf_u={14:0}, gf_u.word=11, ix=11, x=13] [L16] FCALL (ix) = gf_u.word VAL [(ix) = gf_u.word=6, \old(x)=13, gf_u={14:0}, gf_u.word=11, ix=11, x=13] [L17] COND FALSE !(0) VAL [\old(x)=13, ix=11, x=13] [L19] FCALL ieee_float_shape_type sf_u; VAL [\old(x)=13, ix=11, sf_u={7:0}, x=13] [L20] FCALL sf_u.word = (ix & 0x7fffffff) VAL [\old(x)=13, ix=11, sf_u={7:0}, x=13] [L21] EXPR, FCALL sf_u.value VAL [\old(x)=13, ix=11, sf_u={7:0}, sf_u.value=12, x=13] [L21] (x) = sf_u.value VAL [\old(x)=13, ix=11, sf_u={7:0}, sf_u.value=12, x=12] [L21] FCALL (x) = sf_u.value VAL [(x) = sf_u.value=9, \old(x)=13, ix=11, sf_u={7:0}, sf_u.value=12, x=12] [L22] COND FALSE !(0) VAL [\old(x)=13, ix=11, x=12] [L23] RET return x; VAL [\old(x)=13, \result=12, ix=11, x=12] [L47] EXPR fabs_float(x) VAL [fabs_float(x)=12, x=13] [L47] float res = fabs_float(x); [L50] CALL, EXPR isinf_float(res) VAL [\old(x)=12] [L28] __int32_t ix; VAL [\old(x)=12, x=12] [L30] FCALL ieee_float_shape_type gf_u; VAL [\old(x)=12, gf_u={10:0}, x=12] [L31] FCALL gf_u.value = (x) VAL [\old(x)=12, gf_u={10:0}, x=12] [L32] EXPR, FCALL gf_u.word VAL [\old(x)=12, gf_u={10:0}, gf_u.word=2, x=12] [L32] (ix) = gf_u.word VAL [\old(x)=12, gf_u={10:0}, gf_u.word=2, ix=2, x=12] [L32] FCALL (ix) = gf_u.word VAL [(ix) = gf_u.word=8, \old(x)=12, gf_u={10:0}, gf_u.word=2, ix=2, x=12] [L33] COND FALSE !(0) VAL [\old(x)=12, ix=2, x=12] [L34] ix &= 0x7fffffff [L35] RET return ((ix) == 0x7f800000L); VAL [\old(x)=12, \result=0, ix=0, x=12] [L50] EXPR isinf_float(res) VAL [isinf_float(res)=0, res=12, x=13] [L50] COND TRUE !isinf_float(res) [L51] __VERIFIER_error() VAL [res=12, x=13] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 55 locations, 1 error locations. UNSAFE Result, 0.5s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 54 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=55occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 73 NumberOfCodeBlocks, 73 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 22 ConstructedInterpolants, 0 QuantifiedInterpolants, 484 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 18:37:48,870 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-21 18:37:48,872 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-21 18:37:48,884 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-21 18:37:48,884 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-21 18:37:48,885 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-21 18:37:48,886 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-21 18:37:48,888 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-21 18:37:48,890 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-21 18:37:48,891 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-21 18:37:48,892 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-21 18:37:48,892 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-21 18:37:48,893 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-21 18:37:48,894 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-21 18:37:48,895 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-21 18:37:48,896 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-21 18:37:48,897 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-21 18:37:48,899 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-21 18:37:48,901 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-21 18:37:48,902 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-21 18:37:48,903 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-21 18:37:48,905 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-21 18:37:48,907 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-21 18:37:48,908 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-21 18:37:48,908 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-21 18:37:48,909 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-21 18:37:48,910 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-21 18:37:48,911 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-21 18:37:48,912 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-21 18:37:48,913 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-21 18:37:48,913 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-21 18:37:48,914 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-21 18:37:48,914 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-21 18:37:48,915 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-21 18:37:48,916 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-21 18:37:48,917 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-21 18:37:48,917 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2018-09-21 18:37:48,934 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-21 18:37:48,934 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-21 18:37:48,937 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-21 18:37:48,938 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-09-21 18:37:48,938 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-09-21 18:37:48,938 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-09-21 18:37:48,939 INFO L133 SettingsManager]: * Use SBE=true [2018-09-21 18:37:48,939 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-21 18:37:48,939 INFO L133 SettingsManager]: * sizeof long=4 [2018-09-21 18:37:48,943 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-09-21 18:37:48,943 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-21 18:37:48,943 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-21 18:37:48,943 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-21 18:37:48,943 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-21 18:37:48,944 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-09-21 18:37:48,944 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-09-21 18:37:48,944 INFO L133 SettingsManager]: * sizeof long double=12 [2018-09-21 18:37:48,944 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-21 18:37:48,944 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-21 18:37:48,945 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-21 18:37:48,945 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-21 18:37:48,945 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-21 18:37:48,945 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-21 18:37:48,949 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-21 18:37:48,949 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-21 18:37:48,949 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-21 18:37:48,949 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-21 18:37:48,949 INFO L133 SettingsManager]: * Trace refinement strategy=WOLF [2018-09-21 18:37:48,950 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-21 18:37:48,950 INFO L133 SettingsManager]: * Command for external solver=cvc4nyu --tear-down-incremental --rewrite-divk --print-success --lang smt [2018-09-21 18:37:48,950 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-09-21 18:37:48,950 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 -> bc9c2d8006a021647ffc0d9b742af3213165b422 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 18:37:49,019 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-21 18:37:49,036 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-21 18:37:49,043 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-21 18:37:49,045 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-21 18:37:49,045 INFO L276 PluginConnector]: CDTParser initialized [2018-09-21 18:37:49,046 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1012b_true-unreach-call.c [2018-09-21 18:37:49,406 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ff3801b72/9b7651ca76fd49ac8ef543b12910d74a/FLAG281e4273c [2018-09-21 18:37:49,591 INFO L277 CDTParser]: Found 1 translation units. [2018-09-21 18:37:49,592 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/float_req_bl_1012b_true-unreach-call.c [2018-09-21 18:37:49,600 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ff3801b72/9b7651ca76fd49ac8ef543b12910d74a/FLAG281e4273c [2018-09-21 18:37:49,616 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ff3801b72/9b7651ca76fd49ac8ef543b12910d74a [2018-09-21 18:37:49,621 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-21 18:37:49,624 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-21 18:37:49,626 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-21 18:37:49,626 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-21 18:37:49,633 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-21 18:37:49,634 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 06:37:49" (1/1) ... [2018-09-21 18:37:49,637 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@312a656a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:37:49, skipping insertion in model container [2018-09-21 18:37:49,638 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 06:37:49" (1/1) ... [2018-09-21 18:37:49,650 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-21 18:37:49,853 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-21 18:37:49,872 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-21 18:37:49,888 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-21 18:37:49,919 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:37:49 WrapperNode [2018-09-21 18:37:49,919 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-21 18:37:49,920 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-21 18:37:49,920 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-21 18:37:49,920 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-21 18:37:49,936 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:37:49" (1/1) ... [2018-09-21 18:37:49,936 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:37:49" (1/1) ... [2018-09-21 18:37:49,950 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:37:49" (1/1) ... [2018-09-21 18:37:49,950 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:37:49" (1/1) ... [2018-09-21 18:37:49,957 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:37:49" (1/1) ... [2018-09-21 18:37:49,963 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:37:49" (1/1) ... [2018-09-21 18:37:49,966 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:37:49" (1/1) ... [2018-09-21 18:37:49,970 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-21 18:37:49,970 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-21 18:37:49,971 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-21 18:37:49,971 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-21 18:37:49,972 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:37:49" (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 18:37:50,035 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-21 18:37:50,035 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-21 18:37:50,035 INFO L138 BoogieDeclarations]: Found implementation of procedure fabs_float [2018-09-21 18:37:50,035 INFO L138 BoogieDeclarations]: Found implementation of procedure isinf_float [2018-09-21 18:37:50,036 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-21 18:37:50,036 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-09-21 18:37:50,036 INFO L130 BoogieDeclarations]: Found specification of procedure fabs_float [2018-09-21 18:37:50,036 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-09-21 18:37:50,036 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2018-09-21 18:37:50,036 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2018-09-21 18:37:50,036 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-09-21 18:37:50,037 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2018-09-21 18:37:50,037 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2018-09-21 18:37:50,037 INFO L130 BoogieDeclarations]: Found specification of procedure isinf_float [2018-09-21 18:37:50,037 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-21 18:37:50,037 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-21 18:37:50,037 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-21 18:37:50,038 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intFLOATTYPE4 [2018-09-21 18:37:50,038 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2018-09-21 18:37:50,400 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-21 18:37:50,448 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-21 18:37:50,583 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-21 18:37:50,611 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-21 18:37:50,640 INFO L373 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-21 18:37:50,640 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 06:37:50 BoogieIcfgContainer [2018-09-21 18:37:50,640 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-21 18:37:50,641 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-21 18:37:50,642 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-21 18:37:50,645 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-21 18:37:50,645 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 06:37:49" (1/3) ... [2018-09-21 18:37:50,646 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f3803d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 06:37:50, skipping insertion in model container [2018-09-21 18:37:50,646 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:37:49" (2/3) ... [2018-09-21 18:37:50,647 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f3803d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 06:37:50, skipping insertion in model container [2018-09-21 18:37:50,647 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 06:37:50" (3/3) ... [2018-09-21 18:37:50,650 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_1012b_true-unreach-call.c [2018-09-21 18:37:50,659 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-21 18:37:50,667 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-21 18:37:50,708 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-21 18:37:50,709 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-21 18:37:50,709 INFO L382 AbstractCegarLoop]: Hoare is false [2018-09-21 18:37:50,710 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-21 18:37:50,710 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-21 18:37:50,710 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-21 18:37:50,710 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-21 18:37:50,710 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-21 18:37:50,710 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-21 18:37:50,725 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states. [2018-09-21 18:37:50,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-09-21 18:37:50,737 INFO L368 BasicCegarLoop]: Found error trace [2018-09-21 18:37:50,739 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-21 18:37:50,742 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-21 18:37:50,748 INFO L82 PathProgramCache]: Analyzing trace with hash 104849959, now seen corresponding path program 1 times [2018-09-21 18:37:50,753 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-21 18:37:50,754 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2018-09-21 18:37:50,761 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-21 18:37:50,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-21 18:37:50,829 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-21 18:37:50,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-21 18:37:50,850 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-21 18:37:50,867 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-21 18:37:50,868 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-09-21 18:37:50,872 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-09-21 18:37:50,886 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-09-21 18:37:50,887 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-09-21 18:37:50,889 INFO L87 Difference]: Start difference. First operand 54 states. Second operand 2 states. [2018-09-21 18:37:50,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-21 18:37:50,910 INFO L93 Difference]: Finished difference Result 54 states and 53 transitions. [2018-09-21 18:37:50,910 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-09-21 18:37:50,911 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 22 [2018-09-21 18:37:50,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-21 18:37:50,924 INFO L225 Difference]: With dead ends: 54 [2018-09-21 18:37:50,924 INFO L226 Difference]: Without dead ends: 50 [2018-09-21 18:37:50,926 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 21 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 18:37:50,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2018-09-21 18:37:50,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2018-09-21 18:37:50,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2018-09-21 18:37:50,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 49 transitions. [2018-09-21 18:37:50,968 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 49 transitions. Word has length 22 [2018-09-21 18:37:50,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-21 18:37:50,969 INFO L480 AbstractCegarLoop]: Abstraction has 50 states and 49 transitions. [2018-09-21 18:37:50,969 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-09-21 18:37:50,969 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 49 transitions. [2018-09-21 18:37:50,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2018-09-21 18:37:50,972 INFO L368 BasicCegarLoop]: Found error trace [2018-09-21 18:37:50,972 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] [2018-09-21 18:37:50,972 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-21 18:37:50,973 INFO L82 PathProgramCache]: Analyzing trace with hash -582829660, now seen corresponding path program 1 times [2018-09-21 18:37:50,974 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-21 18:37:50,974 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) [2018-09-21 18:37:50,982 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2018-09-21 18:37:51,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-21 18:37:51,093 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-21 18:37:51,199 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 18:37:51,207 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 18:37:51,208 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-21 18:37:51,212 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-21 18:37:51,264 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 18:37:51,264 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:21, output treesize:21 [2018-09-21 18:37:51,301 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 18:37:51,306 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 18:37:51,307 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-21 18:37:51,330 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-21 18:37:51,352 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 18:37:51,353 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:29, output treesize:9 [2018-09-21 18:37:51,420 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 13 treesize of output 10 [2018-09-21 18:37:51,441 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 10 treesize of output 9 [2018-09-21 18:37:51,441 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-21 18:37:51,466 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-21 18:37:51,548 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-09-21 18:37:51,548 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:23, output treesize:19 [2018-09-21 18:37:51,710 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 31 treesize of output 23 [2018-09-21 18:37:51,722 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 23 treesize of output 15 [2018-09-21 18:37:51,723 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-21 18:37:51,750 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-21 18:37:51,770 INFO L267 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-09-21 18:37:51,771 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:40, output treesize:25 [2018-09-21 18:37:52,627 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 18:37:52,632 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 18:37:52,632 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-21 18:37:52,636 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-21 18:37:52,647 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 18:37:52,647 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:21, output treesize:21 [2018-09-21 18:37:52,769 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 18:37:52,777 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 18:37:52,778 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-21 18:37:52,782 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-21 18:37:52,785 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 18:37:52,785 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:29, output treesize:9 [2018-09-21 18:37:53,408 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 18:37:53,408 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-21 18:37:53,421 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-21 18:37:53,422 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2018-09-21 18:37:53,424 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-09-21 18:37:53,426 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-09-21 18:37:53,427 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=307, Unknown=0, NotChecked=0, Total=342 [2018-09-21 18:37:53,430 INFO L87 Difference]: Start difference. First operand 50 states and 49 transitions. Second operand 19 states. [2018-09-21 18:37:56,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-21 18:37:56,127 INFO L93 Difference]: Finished difference Result 48 states and 47 transitions. [2018-09-21 18:37:56,127 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2018-09-21 18:37:56,127 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 49 [2018-09-21 18:37:56,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-21 18:37:56,128 INFO L225 Difference]: With dead ends: 48 [2018-09-21 18:37:56,128 INFO L226 Difference]: Without dead ends: 0 [2018-09-21 18:37:56,130 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 179 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=151, Invalid=1331, Unknown=0, NotChecked=0, Total=1482 [2018-09-21 18:37:56,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-09-21 18:37:56,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-09-21 18:37:56,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-09-21 18:37:56,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-09-21 18:37:56,131 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 49 [2018-09-21 18:37:56,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-21 18:37:56,131 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-09-21 18:37:56,131 INFO L481 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-09-21 18:37:56,131 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-09-21 18:37:56,132 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-09-21 18:37:56,137 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.09 06:37:56 BoogieIcfgContainer [2018-09-21 18:37:56,137 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-21 18:37:56,138 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-09-21 18:37:56,138 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-09-21 18:37:56,138 INFO L276 PluginConnector]: Witness Printer initialized [2018-09-21 18:37:56,140 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 06:37:50" (3/4) ... [2018-09-21 18:37:56,144 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-09-21 18:37:56,153 INFO L316 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-09-21 18:37:56,153 INFO L316 RCFGBacktranslator]: Ignoring RootEdge to procedure isinf_float [2018-09-21 18:37:56,153 INFO L316 RCFGBacktranslator]: Ignoring RootEdge to procedure fabs_float [2018-09-21 18:37:56,153 INFO L316 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-09-21 18:37:56,159 INFO L850 BoogieBacktranslator]: Reduced CFG by removing 16 nodes and edges [2018-09-21 18:37:56,160 INFO L850 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2018-09-21 18:37:56,160 INFO L850 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-09-21 18:37:56,221 INFO L145 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2018-09-21 18:37:56,222 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-09-21 18:37:56,223 INFO L168 Benchmark]: Toolchain (without parser) took 6601.84 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 157.3 MB). Free memory was 951.8 MB in the beginning and 912.2 MB in the end (delta: 39.7 MB). Peak memory consumption was 197.0 MB. Max. memory is 11.5 GB. [2018-09-21 18:37:56,225 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 18:37:56,226 INFO L168 Benchmark]: CACSL2BoogieTranslator took 294.25 ms. Allocated memory is still 1.0 GB. Free memory was 951.8 MB in the beginning and 940.9 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.9 MB. Max. memory is 11.5 GB. [2018-09-21 18:37:56,226 INFO L168 Benchmark]: Boogie Preprocessor took 49.86 ms. Allocated memory is still 1.0 GB. Free memory is still 940.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-09-21 18:37:56,227 INFO L168 Benchmark]: RCFGBuilder took 670.13 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 157.3 MB). Free memory was 940.9 MB in the beginning and 1.1 GB in the end (delta: -190.1 MB). Peak memory consumption was 27.3 MB. Max. memory is 11.5 GB. [2018-09-21 18:37:56,228 INFO L168 Benchmark]: TraceAbstraction took 5496.08 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 912.2 MB in the end (delta: 218.8 MB). Peak memory consumption was 218.8 MB. Max. memory is 11.5 GB. [2018-09-21 18:37:56,228 INFO L168 Benchmark]: Witness Printer took 84.31 ms. Allocated memory is still 1.2 GB. Free memory is still 912.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-09-21 18:37:56,232 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 294.25 ms. Allocated memory is still 1.0 GB. Free memory was 951.8 MB in the beginning and 940.9 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.9 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 49.86 ms. Allocated memory is still 1.0 GB. Free memory is still 940.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 670.13 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 157.3 MB). Free memory was 940.9 MB in the beginning and 1.1 GB in the end (delta: -190.1 MB). Peak memory consumption was 27.3 MB. Max. memory is 11.5 GB. * TraceAbstraction took 5496.08 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 912.2 MB in the end (delta: 218.8 MB). Peak memory consumption was 218.8 MB. Max. memory is 11.5 GB. * Witness Printer took 84.31 ms. Allocated memory is still 1.2 GB. Free memory is still 912.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 51]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 54 locations, 1 error locations. SAFE Result, 5.4s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 2.7s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 83 SDtfs, 36 SDslu, 434 SDs, 0 SdLazy, 292 SolverSat, 13 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 89 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 179 ImplicationChecksByTransitivity, 3.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=54occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 2.3s InterpolantComputationTime, 71 NumberOfCodeBlocks, 71 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 69 ConstructedInterpolants, 14 QuantifiedInterpolants, 30873 SizeOfPredicates, 19 NumberOfNonLiveVariables, 145 ConjunctsInSsa, 24 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 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...