/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/Ultimate.py --spec ../../../trunk/examples/svcomp/ReachSafety.prp --file ../../../trunk/examples/svcomp/float-newlib/float_req_bl_0270a_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_0270a_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 80f5f1ccd9454019e5b231b920d368e18867583c --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_0270a_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 80f5f1ccd9454019e5b231b920d368e18867583c --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 18:16:58,907 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-21 18:16:58,909 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-21 18:16:58,930 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-21 18:16:58,930 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-21 18:16:58,932 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-21 18:16:58,933 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-21 18:16:58,934 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-21 18:16:58,936 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-21 18:16:58,937 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-21 18:16:58,938 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-21 18:16:58,938 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-21 18:16:58,939 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-21 18:16:58,940 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-21 18:16:58,942 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-21 18:16:58,943 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-21 18:16:58,944 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-21 18:16:58,946 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-21 18:16:58,948 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-21 18:16:58,949 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-21 18:16:58,950 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-21 18:16:58,952 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-21 18:16:58,954 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-21 18:16:58,954 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-21 18:16:58,954 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-21 18:16:58,955 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-21 18:16:58,956 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-21 18:16:58,957 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-21 18:16:58,958 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-21 18:16:58,959 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-21 18:16:58,959 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-21 18:16:58,960 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-21 18:16:58,960 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-21 18:16:58,960 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-21 18:16:58,961 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-21 18:16:58,962 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-21 18:16:58,962 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-09-21 18:16:58,989 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-21 18:16:58,990 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-21 18:16:58,991 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-21 18:16:58,991 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-09-21 18:16:58,991 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-09-21 18:16:58,992 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-09-21 18:16:58,992 INFO L133 SettingsManager]: * Use SBE=true [2018-09-21 18:16:58,992 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-21 18:16:58,992 INFO L133 SettingsManager]: * sizeof long=4 [2018-09-21 18:16:58,995 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-21 18:16:58,995 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-09-21 18:16:58,995 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-21 18:16:58,995 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-21 18:16:58,995 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-21 18:16:58,996 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-21 18:16:58,996 INFO L133 SettingsManager]: * sizeof long double=12 [2018-09-21 18:16:58,996 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-21 18:16:58,996 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-21 18:16:58,996 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-21 18:16:58,996 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-21 18:16:58,997 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-21 18:16:58,997 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-21 18:16:58,997 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-21 18:16:58,997 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-21 18:16:58,998 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-21 18:16:58,998 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-21 18:16:58,998 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-09-21 18:16:58,998 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-21 18:16:58,999 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-21 18:16:58,999 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 -> 80f5f1ccd9454019e5b231b920d368e18867583c 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 18:16:59,072 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-21 18:16:59,097 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-21 18:16:59,103 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-21 18:16:59,104 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-21 18:16:59,105 INFO L276 PluginConnector]: CDTParser initialized [2018-09-21 18:16:59,107 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_0270a_true-unreach-call.c [2018-09-21 18:16:59,485 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6d0a665e0/846495956fd24273b21172e4cb51d746/FLAG9b6fdc47e [2018-09-21 18:16:59,688 INFO L277 CDTParser]: Found 1 translation units. [2018-09-21 18:16:59,689 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/float_req_bl_0270a_true-unreach-call.c [2018-09-21 18:16:59,699 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6d0a665e0/846495956fd24273b21172e4cb51d746/FLAG9b6fdc47e [2018-09-21 18:16:59,716 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6d0a665e0/846495956fd24273b21172e4cb51d746 [2018-09-21 18:16:59,721 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-21 18:16:59,725 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-21 18:16:59,726 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-21 18:16:59,726 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-21 18:16:59,734 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-21 18:16:59,735 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 06:16:59" (1/1) ... [2018-09-21 18:16:59,738 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e4e8d6f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:16:59, skipping insertion in model container [2018-09-21 18:16:59,738 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 06:16:59" (1/1) ... [2018-09-21 18:16:59,751 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-21 18:17:00,017 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-21 18:17:00,036 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-21 18:17:00,079 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-21 18:17:00,129 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:17:00 WrapperNode [2018-09-21 18:17:00,130 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-21 18:17:00,131 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-21 18:17:00,131 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-21 18:17:00,131 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-21 18:17:00,148 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:17:00" (1/1) ... [2018-09-21 18:17:00,148 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:17:00" (1/1) ... [2018-09-21 18:17:00,164 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:17:00" (1/1) ... [2018-09-21 18:17:00,164 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:17:00" (1/1) ... [2018-09-21 18:17:00,177 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:17:00" (1/1) ... [2018-09-21 18:17:00,191 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:17:00" (1/1) ... [2018-09-21 18:17:00,198 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:17:00" (1/1) ... [2018-09-21 18:17:00,214 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-21 18:17:00,214 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-21 18:17:00,217 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-21 18:17:00,218 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-21 18:17:00,220 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:17:00" (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 18:17:00,367 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-21 18:17:00,367 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-21 18:17:00,367 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_float [2018-09-21 18:17:00,367 INFO L138 BoogieDeclarations]: Found implementation of procedure __ieee754_sqrtf [2018-09-21 18:17:00,367 INFO L138 BoogieDeclarations]: Found implementation of procedure fabs_float [2018-09-21 18:17:00,368 INFO L138 BoogieDeclarations]: Found implementation of procedure __ieee754_asinf [2018-09-21 18:17:00,368 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-21 18:17:00,368 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-09-21 18:17:00,368 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2018-09-21 18:17:00,368 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_float [2018-09-21 18:17:00,369 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-09-21 18:17:00,369 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2018-09-21 18:17:00,369 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-09-21 18:17:00,369 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-09-21 18:17:00,369 INFO L130 BoogieDeclarations]: Found specification of procedure __ieee754_sqrtf [2018-09-21 18:17:00,369 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-09-21 18:17:00,369 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2018-09-21 18:17:00,370 INFO L130 BoogieDeclarations]: Found specification of procedure fabs_float [2018-09-21 18:17:00,370 INFO L130 BoogieDeclarations]: Found specification of procedure __ieee754_asinf [2018-09-21 18:17:00,370 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-21 18:17:00,370 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-21 18:17:00,370 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-21 18:17:00,370 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~real [2018-09-21 18:17:00,371 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2018-09-21 18:17:01,419 INFO L373 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-21 18:17:01,420 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 06:17:01 BoogieIcfgContainer [2018-09-21 18:17:01,420 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-21 18:17:01,421 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-21 18:17:01,421 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-21 18:17:01,425 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-21 18:17:01,425 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 06:16:59" (1/3) ... [2018-09-21 18:17:01,426 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18902e7d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 06:17:01, skipping insertion in model container [2018-09-21 18:17:01,426 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:17:00" (2/3) ... [2018-09-21 18:17:01,427 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18902e7d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 06:17:01, skipping insertion in model container [2018-09-21 18:17:01,427 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 06:17:01" (3/3) ... [2018-09-21 18:17:01,429 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_0270a_true-unreach-call.c [2018-09-21 18:17:01,439 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-21 18:17:01,452 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-21 18:17:01,494 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-21 18:17:01,495 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-21 18:17:01,495 INFO L382 AbstractCegarLoop]: Hoare is false [2018-09-21 18:17:01,495 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-21 18:17:01,496 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-21 18:17:01,496 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-21 18:17:01,496 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-21 18:17:01,497 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-21 18:17:01,497 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-21 18:17:01,519 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states. [2018-09-21 18:17:01,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-09-21 18:17:01,531 INFO L368 BasicCegarLoop]: Found error trace [2018-09-21 18:17:01,533 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-21 18:17:01,536 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-21 18:17:01,542 INFO L82 PathProgramCache]: Analyzing trace with hash -1826211279, now seen corresponding path program 1 times [2018-09-21 18:17:01,545 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-21 18:17:01,545 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-21 18:17:01,594 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-21 18:17:01,594 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-21 18:17:01,594 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-21 18:17:01,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-21 18:17:01,739 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 18:17:01,742 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-21 18:17:01,743 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-09-21 18:17:01,750 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-09-21 18:17:01,766 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-09-21 18:17:01,767 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-09-21 18:17:01,770 INFO L87 Difference]: Start difference. First operand 146 states. Second operand 2 states. [2018-09-21 18:17:01,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-21 18:17:01,797 INFO L93 Difference]: Finished difference Result 146 states and 164 transitions. [2018-09-21 18:17:01,797 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-09-21 18:17:01,799 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 17 [2018-09-21 18:17:01,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-21 18:17:01,817 INFO L225 Difference]: With dead ends: 146 [2018-09-21 18:17:01,817 INFO L226 Difference]: Without dead ends: 142 [2018-09-21 18:17:01,821 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 18:17:01,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2018-09-21 18:17:01,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 142. [2018-09-21 18:17:01,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2018-09-21 18:17:01,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 160 transitions. [2018-09-21 18:17:01,875 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 160 transitions. Word has length 17 [2018-09-21 18:17:01,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-21 18:17:01,875 INFO L480 AbstractCegarLoop]: Abstraction has 142 states and 160 transitions. [2018-09-21 18:17:01,876 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-09-21 18:17:01,876 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 160 transitions. [2018-09-21 18:17:01,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-09-21 18:17:01,877 INFO L368 BasicCegarLoop]: Found error trace [2018-09-21 18:17:01,877 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-21 18:17:01,877 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-21 18:17:01,878 INFO L82 PathProgramCache]: Analyzing trace with hash 424770565, now seen corresponding path program 1 times [2018-09-21 18:17:01,878 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-21 18:17:01,878 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-21 18:17:01,881 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-21 18:17:01,881 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-21 18:17:01,881 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-21 18:17:01,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-09-21 18:17:02,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-09-21 18:17:02,048 INFO L443 BasicCegarLoop]: Counterexample might be feasible [2018-09-21 18:17:02,114 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.09 06:17:02 BoogieIcfgContainer [2018-09-21 18:17:02,116 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-21 18:17:02,116 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-09-21 18:17:02,116 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-09-21 18:17:02,117 INFO L276 PluginConnector]: Witness Printer initialized [2018-09-21 18:17:02,117 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 06:17:01" (3/4) ... [2018-09-21 18:17:02,123 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-09-21 18:17:02,123 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-09-21 18:17:02,126 INFO L168 Benchmark]: Toolchain (without parser) took 2404.54 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 149.9 MB). Free memory was 953.2 MB in the beginning and 1.1 GB in the end (delta: -117.2 MB). Peak memory consumption was 32.8 MB. Max. memory is 11.5 GB. [2018-09-21 18:17:02,128 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-09-21 18:17:02,129 INFO L168 Benchmark]: CACSL2BoogieTranslator took 404.18 ms. Allocated memory is still 1.0 GB. Free memory was 953.2 MB in the beginning and 937.1 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 11.5 GB. [2018-09-21 18:17:02,131 INFO L168 Benchmark]: Boogie Preprocessor took 83.07 ms. Allocated memory is still 1.0 GB. Free memory was 937.1 MB in the beginning and 935.7 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 11.5 GB. [2018-09-21 18:17:02,132 INFO L168 Benchmark]: RCFGBuilder took 1206.24 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 149.9 MB). Free memory was 935.7 MB in the beginning and 1.1 GB in the end (delta: -168.5 MB). Peak memory consumption was 28.3 MB. Max. memory is 11.5 GB. [2018-09-21 18:17:02,134 INFO L168 Benchmark]: TraceAbstraction took 694.36 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: 27.1 MB). Peak memory consumption was 27.1 MB. Max. memory is 11.5 GB. [2018-09-21 18:17:02,135 INFO L168 Benchmark]: Witness Printer took 6.85 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: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. [2018-09-21 18:17:02,142 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 404.18 ms. Allocated memory is still 1.0 GB. Free memory was 953.2 MB in the beginning and 937.1 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 83.07 ms. Allocated memory is still 1.0 GB. Free memory was 937.1 MB in the beginning and 935.7 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 11.5 GB. * RCFGBuilder took 1206.24 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 149.9 MB). Free memory was 935.7 MB in the beginning and 1.1 GB in the end (delta: -168.5 MB). Peak memory consumption was 28.3 MB. Max. memory is 11.5 GB. * TraceAbstraction took 694.36 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: 27.1 MB). Peak memory consumption was 27.1 MB. Max. memory is 11.5 GB. * Witness Printer took 6.85 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: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 198]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 197, overapproximation of someUnaryDOUBLEoperation at line 111, overapproximation of bitwiseAnd at line 125, overapproximation of someUnaryFLOAToperation at line 193, overapproximation of someBinaryArithmeticFLOAToperation at line 128. Possible FailurePath: [L24] static const float one_sqrt = 1.0, tiny_sqrt = 1.0e-30; [L107-L115] static const float one_asin = 1.0000000000e+00, huge_asin = 1.000e+30, pio2_hi_asin = 1.57079637050628662109375f, pio2_lo_asin = -4.37113900018624283e-8f, pio4_hi_asin = 0.785398185253143310546875f, pS0_asin = 1.6666667163e-01, pS1_asin = -3.2556581497e-01, pS2_asin = 2.0121252537e-01, pS3_asin = -4.0055535734e-02, pS4_asin = 7.9153501429e-04, pS5_asin = 3.4793309169e-05, qS1_asin = -2.4033949375e+00, qS2_asin = 2.0209457874e+00, qS3_asin = -6.8828397989e-01, qS4_asin = 7.7038154006e-02; VAL [\old(huge_asin)=26, \old(one_asin)=10, \old(one_sqrt)=8, \old(pio2_hi_asin)=9, \old(pio2_lo_asin)=19, \old(pio4_hi_asin)=11, \old(pS0_asin)=18, \old(pS1_asin)=12, \old(pS2_asin)=7, \old(pS3_asin)=17, \old(pS4_asin)=22, \old(pS5_asin)=14, \old(qS1_asin)=27, \old(qS2_asin)=23, \old(qS3_asin)=5, \old(qS4_asin)=20, \old(tiny_sqrt)=21, huge_asin=1000000000000000000000000000000, one_asin=1, one_sqrt=1, pio2_hi_asin=13176795/8388608, pio4_hi_asin=13176795/16777216, pS0_asin=16666667163/100000000000, pS2_asin=20121252537/100000000000, pS4_asin=79153501429/100000000000000, pS5_asin=34793309169/1000000000000000, qS2_asin=10104728937/5000000000, qS4_asin=38519077003/500000000000, tiny_sqrt=1/1000000000000000000000000000000] [L193] float x = -0.0f; VAL [huge_asin=1000000000000000000000000000000, one_asin=1, one_sqrt=1, pio2_hi_asin=13176795/8388608, pio4_hi_asin=13176795/16777216, pS0_asin=16666667163/100000000000, pS2_asin=20121252537/100000000000, pS4_asin=79153501429/100000000000000, pS5_asin=34793309169/1000000000000000, qS2_asin=10104728937/5000000000, qS4_asin=38519077003/500000000000, tiny_sqrt=1/1000000000000000000000000000000] [L194] CALL, EXPR __ieee754_asinf(x) VAL [\old(x)=13, huge_asin=1000000000000000000000000000000, one_asin=1, one_sqrt=1, pio2_hi_asin=13176795/8388608, pio4_hi_asin=13176795/16777216, pS0_asin=16666667163/100000000000, pS2_asin=20121252537/100000000000, pS4_asin=79153501429/100000000000000, pS5_asin=34793309169/1000000000000000, qS2_asin=10104728937/5000000000, qS4_asin=38519077003/500000000000, tiny_sqrt=1/1000000000000000000000000000000] [L118] float t, w, p, q, c, r, s; [L119] __int32_t hx, ix; VAL [\old(x)=13, huge_asin=1000000000000000000000000000000, one_asin=1, one_sqrt=1, pio2_hi_asin=13176795/8388608, pio4_hi_asin=13176795/16777216, pS0_asin=16666667163/100000000000, pS2_asin=20121252537/100000000000, pS4_asin=79153501429/100000000000000, pS5_asin=34793309169/1000000000000000, qS2_asin=10104728937/5000000000, qS4_asin=38519077003/500000000000, tiny_sqrt=1/1000000000000000000000000000000, x=13] [L121] FCALL ieee_float_shape_type gf_u; VAL [\old(x)=13, gf_u={24:0}, huge_asin=1000000000000000000000000000000, one_asin=1, one_sqrt=1, pio2_hi_asin=13176795/8388608, pio4_hi_asin=13176795/16777216, pS0_asin=16666667163/100000000000, pS2_asin=20121252537/100000000000, pS4_asin=79153501429/100000000000000, pS5_asin=34793309169/1000000000000000, qS2_asin=10104728937/5000000000, qS4_asin=38519077003/500000000000, tiny_sqrt=1/1000000000000000000000000000000, x=13] [L122] FCALL gf_u.value = (x) VAL [\old(x)=13, gf_u={24:0}, huge_asin=1000000000000000000000000000000, one_asin=1, one_sqrt=1, pio2_hi_asin=13176795/8388608, pio4_hi_asin=13176795/16777216, pS0_asin=16666667163/100000000000, pS2_asin=20121252537/100000000000, pS4_asin=79153501429/100000000000000, pS5_asin=34793309169/1000000000000000, qS2_asin=10104728937/5000000000, qS4_asin=38519077003/500000000000, tiny_sqrt=1/1000000000000000000000000000000, x=13] [L123] EXPR, FCALL gf_u.word VAL [\old(x)=13, gf_u={24:0}, gf_u.word=3, huge_asin=1000000000000000000000000000000, one_asin=1, one_sqrt=1, pio2_hi_asin=13176795/8388608, pio4_hi_asin=13176795/16777216, pS0_asin=16666667163/100000000000, pS2_asin=20121252537/100000000000, pS4_asin=79153501429/100000000000000, pS5_asin=34793309169/1000000000000000, qS2_asin=10104728937/5000000000, qS4_asin=38519077003/500000000000, tiny_sqrt=1/1000000000000000000000000000000, x=13] [L123] (hx) = gf_u.word VAL [\old(x)=13, gf_u={24:0}, gf_u.word=3, huge_asin=1000000000000000000000000000000, hx=3, one_asin=1, one_sqrt=1, pio2_hi_asin=13176795/8388608, pio4_hi_asin=13176795/16777216, pS0_asin=16666667163/100000000000, pS2_asin=20121252537/100000000000, pS4_asin=79153501429/100000000000000, pS5_asin=34793309169/1000000000000000, qS2_asin=10104728937/5000000000, qS4_asin=38519077003/500000000000, tiny_sqrt=1/1000000000000000000000000000000, x=13] [L123] FCALL (hx) = gf_u.word VAL [(hx) = gf_u.word=16, \old(x)=13, gf_u={24:0}, gf_u.word=3, huge_asin=1000000000000000000000000000000, hx=3, one_asin=1, one_sqrt=1, pio2_hi_asin=13176795/8388608, pio4_hi_asin=13176795/16777216, pS0_asin=16666667163/100000000000, pS2_asin=20121252537/100000000000, pS4_asin=79153501429/100000000000000, pS5_asin=34793309169/1000000000000000, qS2_asin=10104728937/5000000000, qS4_asin=38519077003/500000000000, tiny_sqrt=1/1000000000000000000000000000000, x=13] [L124] COND FALSE !(0) VAL [\old(x)=13, huge_asin=1000000000000000000000000000000, hx=3, one_asin=1, one_sqrt=1, pio2_hi_asin=13176795/8388608, pio4_hi_asin=13176795/16777216, pS0_asin=16666667163/100000000000, pS2_asin=20121252537/100000000000, pS4_asin=79153501429/100000000000000, pS5_asin=34793309169/1000000000000000, qS2_asin=10104728937/5000000000, qS4_asin=38519077003/500000000000, tiny_sqrt=1/1000000000000000000000000000000, x=13] [L125] ix = hx & 0x7fffffff VAL [\old(x)=13, huge_asin=1000000000000000000000000000000, hx=3, one_asin=1, one_sqrt=1, pio2_hi_asin=13176795/8388608, pio4_hi_asin=13176795/16777216, pS0_asin=16666667163/100000000000, pS2_asin=20121252537/100000000000, pS4_asin=79153501429/100000000000000, pS5_asin=34793309169/1000000000000000, qS2_asin=10104728937/5000000000, qS4_asin=38519077003/500000000000, tiny_sqrt=1/1000000000000000000000000000000, x=13] [L126] COND TRUE ix == 0x3f800000 [L128] RET return x * pio2_hi_asin + x * pio2_lo_asin; VAL [\old(x)=13, huge_asin=1000000000000000000000000000000, hx=3, ix=1065353216, one_asin=1, one_sqrt=1, pio2_hi_asin=13176795/8388608, pio4_hi_asin=13176795/16777216, pS0_asin=16666667163/100000000000, pS2_asin=20121252537/100000000000, pS4_asin=79153501429/100000000000000, pS5_asin=34793309169/1000000000000000, qS2_asin=10104728937/5000000000, qS4_asin=38519077003/500000000000, tiny_sqrt=1/1000000000000000000000000000000, x=13] [L194] EXPR __ieee754_asinf(x) VAL [__ieee754_asinf(x)=25, huge_asin=1000000000000000000000000000000, one_asin=1, one_sqrt=1, pio2_hi_asin=13176795/8388608, pio4_hi_asin=13176795/16777216, pS0_asin=16666667163/100000000000, pS2_asin=20121252537/100000000000, pS4_asin=79153501429/100000000000000, pS5_asin=34793309169/1000000000000000, qS2_asin=10104728937/5000000000, qS4_asin=38519077003/500000000000, tiny_sqrt=1/1000000000000000000000000000000, x=13] [L194] float res = __ieee754_asinf(x); [L197] EXPR res == -0.0f && __signbit_float(res) == 1 VAL [huge_asin=1000000000000000000000000000000, one_asin=1, one_sqrt=1, pio2_hi_asin=13176795/8388608, pio4_hi_asin=13176795/16777216, pS0_asin=16666667163/100000000000, pS2_asin=20121252537/100000000000, pS4_asin=79153501429/100000000000000, pS5_asin=34793309169/1000000000000000, qS2_asin=10104728937/5000000000, qS4_asin=38519077003/500000000000, res=25, res == -0.0f && __signbit_float(res) == 1=0, tiny_sqrt=1/1000000000000000000000000000000, x=13] [L197] COND FALSE, EXPR !(res == -0.0f && __signbit_float(res) == 1) VAL [huge_asin=1000000000000000000000000000000, one_asin=1, one_sqrt=1, pio2_hi_asin=13176795/8388608, pio4_hi_asin=13176795/16777216, pS0_asin=16666667163/100000000000, pS2_asin=20121252537/100000000000, pS4_asin=79153501429/100000000000000, pS5_asin=34793309169/1000000000000000, qS2_asin=10104728937/5000000000, qS4_asin=38519077003/500000000000, res=25, res == -0.0f && __signbit_float(res) == 1=0, tiny_sqrt=1/1000000000000000000000000000000, x=13] [L197] COND TRUE !(res == -0.0f && __signbit_float(res) == 1) [L198] __VERIFIER_error() VAL [huge_asin=1000000000000000000000000000000, one_asin=1, one_sqrt=1, pio2_hi_asin=13176795/8388608, pio4_hi_asin=13176795/16777216, pS0_asin=16666667163/100000000000, pS2_asin=20121252537/100000000000, pS4_asin=79153501429/100000000000000, pS5_asin=34793309169/1000000000000000, qS2_asin=10104728937/5000000000, qS4_asin=38519077003/500000000000, res=25, tiny_sqrt=1/1000000000000000000000000000000, x=13] - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 146 locations, 1 error locations. UNSAFE Result, 0.6s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 164 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=146occurred 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, 43 NumberOfCodeBlocks, 43 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 16 ConstructedInterpolants, 0 QuantifiedInterpolants, 256 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 18:17:04,554 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-21 18:17:04,557 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-21 18:17:04,575 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-21 18:17:04,576 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-21 18:17:04,577 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-21 18:17:04,580 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-21 18:17:04,582 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-21 18:17:04,587 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-21 18:17:04,595 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-21 18:17:04,596 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-21 18:17:04,596 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-21 18:17:04,597 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-21 18:17:04,601 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-21 18:17:04,605 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-21 18:17:04,606 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-21 18:17:04,607 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-21 18:17:04,608 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-21 18:17:04,614 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-21 18:17:04,618 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-21 18:17:04,619 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-21 18:17:04,621 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-21 18:17:04,627 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-21 18:17:04,627 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-21 18:17:04,630 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-21 18:17:04,631 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-21 18:17:04,632 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-21 18:17:04,633 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-21 18:17:04,634 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-21 18:17:04,637 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-21 18:17:04,637 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-21 18:17:04,641 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-21 18:17:04,641 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-21 18:17:04,642 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-21 18:17:04,644 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-21 18:17:04,645 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-21 18:17:04,645 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2018-09-21 18:17:04,675 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-21 18:17:04,676 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-21 18:17:04,677 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-21 18:17:04,678 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-09-21 18:17:04,678 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-09-21 18:17:04,679 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-09-21 18:17:04,679 INFO L133 SettingsManager]: * Use SBE=true [2018-09-21 18:17:04,679 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-21 18:17:04,679 INFO L133 SettingsManager]: * sizeof long=4 [2018-09-21 18:17:04,680 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-09-21 18:17:04,681 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-21 18:17:04,681 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-21 18:17:04,681 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-21 18:17:04,681 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-21 18:17:04,681 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-09-21 18:17:04,682 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-09-21 18:17:04,682 INFO L133 SettingsManager]: * sizeof long double=12 [2018-09-21 18:17:04,682 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-21 18:17:04,682 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-21 18:17:04,683 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-21 18:17:04,684 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-21 18:17:04,684 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-21 18:17:04,684 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-21 18:17:04,684 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-21 18:17:04,685 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-21 18:17:04,685 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-21 18:17:04,685 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-21 18:17:04,685 INFO L133 SettingsManager]: * Trace refinement strategy=WOLF [2018-09-21 18:17:04,686 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-21 18:17:04,686 INFO L133 SettingsManager]: * Command for external solver=cvc4nyu --tear-down-incremental --rewrite-divk --print-success --lang smt [2018-09-21 18:17:04,686 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-09-21 18:17:04,686 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 -> 80f5f1ccd9454019e5b231b920d368e18867583c 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 18:17:04,742 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-21 18:17:04,760 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-21 18:17:04,764 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-21 18:17:04,766 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-21 18:17:04,766 INFO L276 PluginConnector]: CDTParser initialized [2018-09-21 18:17:04,767 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_0270a_true-unreach-call.c [2018-09-21 18:17:05,142 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/72c4b528a/b6fb7f94aabe4efbb4b06a688346d7fb/FLAG003ca4fa8 [2018-09-21 18:17:05,327 INFO L277 CDTParser]: Found 1 translation units. [2018-09-21 18:17:05,328 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/float_req_bl_0270a_true-unreach-call.c [2018-09-21 18:17:05,338 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/72c4b528a/b6fb7f94aabe4efbb4b06a688346d7fb/FLAG003ca4fa8 [2018-09-21 18:17:05,355 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/72c4b528a/b6fb7f94aabe4efbb4b06a688346d7fb [2018-09-21 18:17:05,358 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-21 18:17:05,361 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-21 18:17:05,362 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-21 18:17:05,362 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-21 18:17:05,369 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-21 18:17:05,370 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 06:17:05" (1/1) ... [2018-09-21 18:17:05,373 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@550ba157 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:17:05, skipping insertion in model container [2018-09-21 18:17:05,373 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 06:17:05" (1/1) ... [2018-09-21 18:17:05,386 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-21 18:17:05,707 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-21 18:17:05,731 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-21 18:17:05,784 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-21 18:17:05,827 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:17:05 WrapperNode [2018-09-21 18:17:05,828 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-21 18:17:05,829 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-21 18:17:05,829 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-21 18:17:05,829 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-21 18:17:05,846 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:17:05" (1/1) ... [2018-09-21 18:17:05,847 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:17:05" (1/1) ... [2018-09-21 18:17:05,871 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:17:05" (1/1) ... [2018-09-21 18:17:05,875 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:17:05" (1/1) ... [2018-09-21 18:17:05,902 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:17:05" (1/1) ... [2018-09-21 18:17:05,920 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:17:05" (1/1) ... [2018-09-21 18:17:05,929 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:17:05" (1/1) ... [2018-09-21 18:17:05,939 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-21 18:17:05,942 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-21 18:17:05,942 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-21 18:17:05,942 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-21 18:17:05,943 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:17:05" (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 18:17:06,101 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-21 18:17:06,102 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-21 18:17:06,102 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_float [2018-09-21 18:17:06,102 INFO L138 BoogieDeclarations]: Found implementation of procedure __ieee754_sqrtf [2018-09-21 18:17:06,103 INFO L138 BoogieDeclarations]: Found implementation of procedure fabs_float [2018-09-21 18:17:06,103 INFO L138 BoogieDeclarations]: Found implementation of procedure __ieee754_asinf [2018-09-21 18:17:06,103 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-21 18:17:06,103 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-09-21 18:17:06,105 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2018-09-21 18:17:06,106 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_float [2018-09-21 18:17:06,106 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-09-21 18:17:06,106 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2018-09-21 18:17:06,106 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2018-09-21 18:17:06,106 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-09-21 18:17:06,108 INFO L130 BoogieDeclarations]: Found specification of procedure __ieee754_sqrtf [2018-09-21 18:17:06,108 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2018-09-21 18:17:06,108 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2018-09-21 18:17:06,108 INFO L130 BoogieDeclarations]: Found specification of procedure fabs_float [2018-09-21 18:17:06,109 INFO L130 BoogieDeclarations]: Found specification of procedure __ieee754_asinf [2018-09-21 18:17:06,109 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-21 18:17:06,109 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-21 18:17:06,109 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-21 18:17:06,109 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2018-09-21 18:17:06,109 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intFLOATTYPE4 [2018-09-21 18:17:06,559 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-21 18:17:06,583 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-21 18:17:13,856 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-21 18:17:13,894 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-21 18:17:16,186 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-21 18:17:16,197 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-21 18:17:16,311 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-21 18:17:16,321 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-21 18:17:16,827 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-21 18:17:16,834 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-21 18:17:17,926 INFO L373 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-21 18:17:17,926 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 06:17:17 BoogieIcfgContainer [2018-09-21 18:17:17,927 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-21 18:17:17,927 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-21 18:17:17,928 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-21 18:17:17,931 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-21 18:17:17,931 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 06:17:05" (1/3) ... [2018-09-21 18:17:17,932 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73fe1528 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 06:17:17, skipping insertion in model container [2018-09-21 18:17:17,932 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:17:05" (2/3) ... [2018-09-21 18:17:17,933 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73fe1528 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 06:17:17, skipping insertion in model container [2018-09-21 18:17:17,934 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 06:17:17" (3/3) ... [2018-09-21 18:17:17,936 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_0270a_true-unreach-call.c [2018-09-21 18:17:17,946 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-21 18:17:17,955 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-21 18:17:17,993 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-21 18:17:17,994 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-21 18:17:17,994 INFO L382 AbstractCegarLoop]: Hoare is false [2018-09-21 18:17:17,994 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-21 18:17:17,994 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-21 18:17:17,994 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-21 18:17:17,994 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-21 18:17:17,995 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-21 18:17:17,995 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-21 18:17:18,016 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states. [2018-09-21 18:17:18,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-09-21 18:17:18,028 INFO L368 BasicCegarLoop]: Found error trace [2018-09-21 18:17:18,029 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-21 18:17:18,032 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-21 18:17:18,038 INFO L82 PathProgramCache]: Analyzing trace with hash -1826211279, now seen corresponding path program 1 times [2018-09-21 18:17:18,043 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-21 18:17:18,044 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 18:17:18,056 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 18:17:18,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-21 18:17:18,326 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-21 18:17:18,344 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 18:17:18,344 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-21 18:17:18,360 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-21 18:17:18,365 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-09-21 18:17:18,369 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-09-21 18:17:18,386 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-09-21 18:17:18,387 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-09-21 18:17:18,390 INFO L87 Difference]: Start difference. First operand 146 states. Second operand 2 states. [2018-09-21 18:17:18,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-21 18:17:18,428 INFO L93 Difference]: Finished difference Result 146 states and 164 transitions. [2018-09-21 18:17:18,429 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-09-21 18:17:18,430 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 17 [2018-09-21 18:17:18,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-21 18:17:18,448 INFO L225 Difference]: With dead ends: 146 [2018-09-21 18:17:18,448 INFO L226 Difference]: Without dead ends: 142 [2018-09-21 18:17:18,451 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 16 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 18:17:18,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2018-09-21 18:17:18,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 142. [2018-09-21 18:17:18,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2018-09-21 18:17:18,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 160 transitions. [2018-09-21 18:17:18,506 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 160 transitions. Word has length 17 [2018-09-21 18:17:18,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-21 18:17:18,506 INFO L480 AbstractCegarLoop]: Abstraction has 142 states and 160 transitions. [2018-09-21 18:17:18,507 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-09-21 18:17:18,507 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 160 transitions. [2018-09-21 18:17:18,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-09-21 18:17:18,509 INFO L368 BasicCegarLoop]: Found error trace [2018-09-21 18:17:18,509 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-21 18:17:18,509 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-21 18:17:18,510 INFO L82 PathProgramCache]: Analyzing trace with hash 424770565, now seen corresponding path program 1 times [2018-09-21 18:17:18,511 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-21 18:17:18,511 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 18:17:18,523 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-21 18:17:18,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-21 18:17:18,786 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-21 18:17:18,900 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 18:17:18,906 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 18:17:18,907 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-21 18:17:18,914 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-21 18:17:18,975 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 18:17:18,976 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:21, output treesize:21 [2018-09-21 18:17:19,038 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 18:17:19,053 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 18:17:19,054 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-21 18:17:19,058 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-21 18:17:19,064 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 18:17:19,065 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:29, output treesize:9 [2018-09-21 18:17:19,372 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 18:17:19,373 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-21 18:17:19,389 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-21 18:17:19,390 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2018-09-21 18:17:19,392 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-21 18:17:19,392 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-21 18:17:19,392 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2018-09-21 18:17:19,393 INFO L87 Difference]: Start difference. First operand 142 states and 160 transitions. Second operand 9 states. [2018-09-21 18:17:29,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-21 18:17:29,603 INFO L93 Difference]: Finished difference Result 147 states and 165 transitions. [2018-09-21 18:17:29,604 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-09-21 18:17:29,605 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 26 [2018-09-21 18:17:29,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-21 18:17:29,609 INFO L225 Difference]: With dead ends: 147 [2018-09-21 18:17:29,609 INFO L226 Difference]: Without dead ends: 145 [2018-09-21 18:17:29,611 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2018-09-21 18:17:29,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2018-09-21 18:17:29,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 142. [2018-09-21 18:17:29,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2018-09-21 18:17:29,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 159 transitions. [2018-09-21 18:17:29,626 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 159 transitions. Word has length 26 [2018-09-21 18:17:29,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-21 18:17:29,627 INFO L480 AbstractCegarLoop]: Abstraction has 142 states and 159 transitions. [2018-09-21 18:17:29,627 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-21 18:17:29,627 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 159 transitions. [2018-09-21 18:17:29,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-09-21 18:17:29,629 INFO L368 BasicCegarLoop]: Found error trace [2018-09-21 18:17:29,630 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] [2018-09-21 18:17:29,630 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-21 18:17:29,630 INFO L82 PathProgramCache]: Analyzing trace with hash 497435435, now seen corresponding path program 1 times [2018-09-21 18:17:29,631 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-21 18:17:29,631 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2018-09-21 18:17:29,639 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2018-09-21 18:17:29,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-21 18:17:29,932 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-21 18:17:29,978 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 18:17:29,982 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 18:17:29,983 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-21 18:17:29,987 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-21 18:17:30,025 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 18:17:30,025 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:21, output treesize:21 [2018-09-21 18:17:30,069 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 18:17:30,093 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 18:17:30,094 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-21 18:17:30,105 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-21 18:17:30,110 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 18:17:30,110 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:29, output treesize:9 [2018-09-21 18:17:30,309 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 18:17:30,310 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-21 18:17:30,327 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-21 18:17:30,327 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2018-09-21 18:17:30,330 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-21 18:17:30,330 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-21 18:17:30,330 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2018-09-21 18:17:30,330 INFO L87 Difference]: Start difference. First operand 142 states and 159 transitions. Second operand 9 states. [2018-09-21 18:17:37,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-21 18:17:37,414 INFO L93 Difference]: Finished difference Result 147 states and 164 transitions. [2018-09-21 18:17:37,415 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-09-21 18:17:37,415 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 27 [2018-09-21 18:17:37,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-21 18:17:37,417 INFO L225 Difference]: With dead ends: 147 [2018-09-21 18:17:37,418 INFO L226 Difference]: Without dead ends: 145 [2018-09-21 18:17:37,419 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2018-09-21 18:17:37,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2018-09-21 18:17:37,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 142. [2018-09-21 18:17:37,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2018-09-21 18:17:37,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 158 transitions. [2018-09-21 18:17:37,431 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 158 transitions. Word has length 27 [2018-09-21 18:17:37,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-21 18:17:37,432 INFO L480 AbstractCegarLoop]: Abstraction has 142 states and 158 transitions. [2018-09-21 18:17:37,432 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-21 18:17:37,432 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 158 transitions. [2018-09-21 18:17:37,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-09-21 18:17:37,433 INFO L368 BasicCegarLoop]: Found error trace [2018-09-21 18:17:37,434 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 18:17:37,435 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-21 18:17:37,435 INFO L82 PathProgramCache]: Analyzing trace with hash -847347883, now seen corresponding path program 1 times [2018-09-21 18:17:37,435 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-21 18:17:37,436 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2018-09-21 18:17:37,441 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-21 18:17:38,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-21 18:17:38,571 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-21 18:17:38,604 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 18:17:38,609 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 18:17:38,609 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-21 18:17:38,637 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-21 18:17:38,716 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 18:17:38,717 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:21, output treesize:21 [2018-09-21 18:17:38,771 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 18:17:38,775 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 18:17:38,775 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-21 18:17:38,781 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-21 18:17:38,784 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 18:17:38,784 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:29, output treesize:9 [2018-09-21 18:17:38,927 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 18:17:38,927 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-21 18:17:38,953 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-21 18:17:38,954 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2018-09-21 18:17:38,954 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-21 18:17:38,955 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-21 18:17:38,955 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2018-09-21 18:17:38,955 INFO L87 Difference]: Start difference. First operand 142 states and 158 transitions. Second operand 9 states. [2018-09-21 18:17:45,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-21 18:17:45,509 INFO L93 Difference]: Finished difference Result 176 states and 195 transitions. [2018-09-21 18:17:45,510 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-09-21 18:17:45,511 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 29 [2018-09-21 18:17:45,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-21 18:17:45,513 INFO L225 Difference]: With dead ends: 176 [2018-09-21 18:17:45,513 INFO L226 Difference]: Without dead ends: 150 [2018-09-21 18:17:45,513 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2018-09-21 18:17:45,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2018-09-21 18:17:45,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 147. [2018-09-21 18:17:45,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2018-09-21 18:17:45,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 164 transitions. [2018-09-21 18:17:45,533 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 164 transitions. Word has length 29 [2018-09-21 18:17:45,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-21 18:17:45,535 INFO L480 AbstractCegarLoop]: Abstraction has 147 states and 164 transitions. [2018-09-21 18:17:45,535 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-21 18:17:45,535 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 164 transitions. [2018-09-21 18:17:45,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-09-21 18:17:45,537 INFO L368 BasicCegarLoop]: Found error trace [2018-09-21 18:17:45,537 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 18:17:45,538 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-21 18:17:45,538 INFO L82 PathProgramCache]: Analyzing trace with hash 686800972, now seen corresponding path program 1 times [2018-09-21 18:17:45,538 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-21 18:17:45,539 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 18:17:45,545 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-21 18:17:45,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-21 18:17:45,650 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-21 18:17:45,741 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 18:17:45,742 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-21 18:17:45,753 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-21 18:17:45,753 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-09-21 18:17:45,754 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-09-21 18:17:45,754 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-09-21 18:17:45,754 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-09-21 18:17:45,754 INFO L87 Difference]: Start difference. First operand 147 states and 164 transitions. Second operand 7 states. [2018-09-21 18:17:46,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-21 18:17:46,344 INFO L93 Difference]: Finished difference Result 151 states and 168 transitions. [2018-09-21 18:17:46,344 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-21 18:17:46,345 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 30 [2018-09-21 18:17:46,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-21 18:17:46,346 INFO L225 Difference]: With dead ends: 151 [2018-09-21 18:17:46,346 INFO L226 Difference]: Without dead ends: 151 [2018-09-21 18:17:46,347 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2018-09-21 18:17:46,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2018-09-21 18:17:46,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 151. [2018-09-21 18:17:46,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2018-09-21 18:17:46,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 168 transitions. [2018-09-21 18:17:46,358 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 168 transitions. Word has length 30 [2018-09-21 18:17:46,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-21 18:17:46,359 INFO L480 AbstractCegarLoop]: Abstraction has 151 states and 168 transitions. [2018-09-21 18:17:46,359 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-09-21 18:17:46,360 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 168 transitions. [2018-09-21 18:17:46,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2018-09-21 18:17:46,361 INFO L368 BasicCegarLoop]: Found error trace [2018-09-21 18:17:46,362 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] [2018-09-21 18:17:46,363 INFO L423 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-21 18:17:46,363 INFO L82 PathProgramCache]: Analyzing trace with hash -1851263139, now seen corresponding path program 1 times [2018-09-21 18:17:46,363 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-21 18:17:46,363 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 7 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with mathsat -unsat_core_generation=3 [2018-09-21 18:17:46,373 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-21 18:17:46,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-21 18:17:46,511 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-21 18:17:46,679 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 18:17:46,684 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 18:17:46,685 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-21 18:17:46,690 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-21 18:17:46,706 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 18:17:46,706 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:21, output treesize:21 [2018-09-21 18:17:46,744 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 18:17:46,757 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 18:17:46,757 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-21 18:17:46,783 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-21 18:17:46,807 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 18:17:46,808 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:29, output treesize:9 [2018-09-21 18:17:47,123 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 18:17:47,123 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-21 18:17:47,134 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-21 18:17:47,134 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2018-09-21 18:17:47,135 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-09-21 18:17:47,135 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-09-21 18:17:47,135 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2018-09-21 18:17:47,135 INFO L87 Difference]: Start difference. First operand 151 states and 168 transitions. Second operand 14 states. [2018-09-21 18:17:49,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-21 18:17:49,020 INFO L93 Difference]: Finished difference Result 154 states and 171 transitions. [2018-09-21 18:17:49,021 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-09-21 18:17:49,021 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 46 [2018-09-21 18:17:49,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-21 18:17:49,023 INFO L225 Difference]: With dead ends: 154 [2018-09-21 18:17:49,023 INFO L226 Difference]: Without dead ends: 147 [2018-09-21 18:17:49,024 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=87, Invalid=513, Unknown=0, NotChecked=0, Total=600 [2018-09-21 18:17:49,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2018-09-21 18:17:49,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 147. [2018-09-21 18:17:49,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2018-09-21 18:17:49,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 163 transitions. [2018-09-21 18:17:49,034 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 163 transitions. Word has length 46 [2018-09-21 18:17:49,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-21 18:17:49,034 INFO L480 AbstractCegarLoop]: Abstraction has 147 states and 163 transitions. [2018-09-21 18:17:49,034 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-09-21 18:17:49,035 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 163 transitions. [2018-09-21 18:17:49,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2018-09-21 18:17:49,039 INFO L368 BasicCegarLoop]: Found error trace [2018-09-21 18:17:49,039 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, 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 18:17:49,039 INFO L423 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-21 18:17:49,040 INFO L82 PathProgramCache]: Analyzing trace with hash -1136092018, now seen corresponding path program 1 times [2018-09-21 18:17:49,041 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-21 18:17:49,041 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 8 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with mathsat -unsat_core_generation=3 [2018-09-21 18:17:49,050 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-21 18:17:50,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-21 18:17:50,385 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-21 18:17:50,426 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 18:17:50,430 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 18:17:50,430 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-21 18:17:50,435 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-21 18:17:50,447 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 18:17:50,447 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:21, output treesize:21 [2018-09-21 18:17:50,480 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 18:17:50,484 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 18:17:50,485 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-21 18:17:50,488 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-21 18:17:50,490 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 18:17:50,491 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:29, output treesize:9 [2018-09-21 18:17:50,642 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 18:17:50,642 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-21 18:17:50,677 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-21 18:17:50,678 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2018-09-21 18:17:50,678 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-21 18:17:50,678 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-21 18:17:50,678 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2018-09-21 18:17:50,679 INFO L87 Difference]: Start difference. First operand 147 states and 163 transitions. Second operand 9 states. [2018-09-21 18:17:54,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-21 18:17:54,076 INFO L93 Difference]: Finished difference Result 153 states and 170 transitions. [2018-09-21 18:17:54,079 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-09-21 18:17:54,079 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 73 [2018-09-21 18:17:54,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-21 18:17:54,081 INFO L225 Difference]: With dead ends: 153 [2018-09-21 18:17:54,081 INFO L226 Difference]: Without dead ends: 145 [2018-09-21 18:17:54,082 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2018-09-21 18:17:54,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2018-09-21 18:17:54,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 142. [2018-09-21 18:17:54,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2018-09-21 18:17:54,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 155 transitions. [2018-09-21 18:17:54,089 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 155 transitions. Word has length 73 [2018-09-21 18:17:54,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-21 18:17:54,090 INFO L480 AbstractCegarLoop]: Abstraction has 142 states and 155 transitions. [2018-09-21 18:17:54,090 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-21 18:17:54,090 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 155 transitions. [2018-09-21 18:17:54,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2018-09-21 18:17:54,094 INFO L368 BasicCegarLoop]: Found error trace [2018-09-21 18:17:54,094 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, 1, 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 18:17:54,094 INFO L423 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-21 18:17:54,094 INFO L82 PathProgramCache]: Analyzing trace with hash -987440331, now seen corresponding path program 1 times [2018-09-21 18:17:54,095 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-21 18:17:54,095 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 9 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with mathsat -unsat_core_generation=3 [2018-09-21 18:17:54,102 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-21 18:17:55,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-21 18:17:55,424 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-21 18:17:56,903 WARN L178 SmtUtils]: Spent 689.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2018-09-21 18:17:57,481 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 18:17:57,482 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-21 18:17:57,510 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-21 18:17:57,510 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-21 18:17:57,512 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-21 18:17:57,512 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-21 18:17:57,512 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-21 18:17:57,513 INFO L87 Difference]: Start difference. First operand 142 states and 155 transitions. Second operand 6 states. [2018-09-21 18:17:59,964 WARN L178 SmtUtils]: Spent 1.17 s on a formula simplification that was a NOOP. DAG size: 18 [2018-09-21 18:18:02,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-21 18:18:02,820 INFO L93 Difference]: Finished difference Result 121 states and 133 transitions. [2018-09-21 18:18:02,826 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-21 18:18:02,826 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 75 [2018-09-21 18:18:02,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-21 18:18:02,827 INFO L225 Difference]: With dead ends: 121 [2018-09-21 18:18:02,827 INFO L226 Difference]: Without dead ends: 0 [2018-09-21 18:18:02,828 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 67 SyntacticMatches, 3 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-09-21 18:18:02,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-09-21 18:18:02,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-09-21 18:18:02,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-09-21 18:18:02,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-09-21 18:18:02,830 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 75 [2018-09-21 18:18:02,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-21 18:18:02,830 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-09-21 18:18:02,830 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-21 18:18:02,831 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-09-21 18:18:02,831 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-09-21 18:18:02,836 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.09 06:18:02 BoogieIcfgContainer [2018-09-21 18:18:02,836 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-21 18:18:02,836 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-09-21 18:18:02,837 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-09-21 18:18:02,838 INFO L276 PluginConnector]: Witness Printer initialized [2018-09-21 18:18:02,838 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 06:17:17" (3/4) ... [2018-09-21 18:18:02,844 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-09-21 18:18:02,850 INFO L316 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-09-21 18:18:02,851 INFO L316 RCFGBacktranslator]: Ignoring RootEdge to procedure fabs_float [2018-09-21 18:18:02,851 INFO L316 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-09-21 18:18:02,851 INFO L316 RCFGBacktranslator]: Ignoring RootEdge to procedure __ieee754_asinf [2018-09-21 18:18:02,851 INFO L316 RCFGBacktranslator]: Ignoring RootEdge to procedure __signbit_float [2018-09-21 18:18:02,851 INFO L316 RCFGBacktranslator]: Ignoring RootEdge to procedure __ieee754_sqrtf [2018-09-21 18:18:02,860 INFO L850 BoogieBacktranslator]: Reduced CFG by removing 40 nodes and edges [2018-09-21 18:18:02,861 INFO L850 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2018-09-21 18:18:02,862 INFO L850 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2018-09-21 18:18:02,968 INFO L145 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2018-09-21 18:18:02,972 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-09-21 18:18:02,973 INFO L168 Benchmark]: Toolchain (without parser) took 57613.91 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 203.9 MB). Free memory was 951.9 MB in the beginning and 966.2 MB in the end (delta: -14.3 MB). Peak memory consumption was 189.6 MB. Max. memory is 11.5 GB. [2018-09-21 18:18:02,974 INFO L168 Benchmark]: CDTParser took 0.22 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 18:18:02,975 INFO L168 Benchmark]: CACSL2BoogieTranslator took 465.96 ms. Allocated memory is still 1.0 GB. Free memory was 951.9 MB in the beginning and 935.8 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 11.5 GB. [2018-09-21 18:18:02,975 INFO L168 Benchmark]: Boogie Preprocessor took 112.67 ms. Allocated memory is still 1.0 GB. Free memory was 935.8 MB in the beginning and 930.4 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-09-21 18:18:02,975 INFO L168 Benchmark]: RCFGBuilder took 11984.79 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 145.8 MB). Free memory was 930.4 MB in the beginning and 1.1 GB in the end (delta: -157.7 MB). Peak memory consumption was 23.6 MB. Max. memory is 11.5 GB. [2018-09-21 18:18:02,976 INFO L168 Benchmark]: TraceAbstraction took 44908.34 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 58.2 MB). Free memory was 1.1 GB in the beginning and 973.5 MB in the end (delta: 114.6 MB). Peak memory consumption was 172.8 MB. Max. memory is 11.5 GB. [2018-09-21 18:18:02,976 INFO L168 Benchmark]: Witness Printer took 135.68 ms. Allocated memory is still 1.2 GB. Free memory was 973.5 MB in the beginning and 966.2 MB in the end (delta: 7.3 MB). Peak memory consumption was 7.3 MB. Max. memory is 11.5 GB. [2018-09-21 18:18:02,980 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 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 465.96 ms. Allocated memory is still 1.0 GB. Free memory was 951.9 MB in the beginning and 935.8 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 112.67 ms. Allocated memory is still 1.0 GB. Free memory was 935.8 MB in the beginning and 930.4 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 11984.79 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 145.8 MB). Free memory was 930.4 MB in the beginning and 1.1 GB in the end (delta: -157.7 MB). Peak memory consumption was 23.6 MB. Max. memory is 11.5 GB. * TraceAbstraction took 44908.34 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 58.2 MB). Free memory was 1.1 GB in the beginning and 973.5 MB in the end (delta: 114.6 MB). Peak memory consumption was 172.8 MB. Max. memory is 11.5 GB. * Witness Printer took 135.68 ms. Allocated memory is still 1.2 GB. Free memory was 973.5 MB in the beginning and 966.2 MB in the end (delta: 7.3 MB). Peak memory consumption was 7.3 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 198]: 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 7 procedures, 146 locations, 1 error locations. SAFE Result, 44.8s OverallTime, 8 OverallIterations, 1 TraceHistogramMax, 35.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1164 SDtfs, 802 SDslu, 6087 SDs, 0 SdLazy, 778 SolverSat, 65 SolverUnsat, 8 SolverUnknown, 0 SolverNotchecked, 29.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 358 GetRequests, 263 SyntacticMatches, 3 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 7.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=151occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 12 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 4.2s SatisfiabilityAnalysisTime, 4.8s InterpolantComputationTime, 323 NumberOfCodeBlocks, 323 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 315 ConstructedInterpolants, 26 QuantifiedInterpolants, 137023 SizeOfPredicates, 49 NumberOfNonLiveVariables, 1049 ConjunctsInSsa, 67 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 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...