/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/Ultimate.py --spec ../../../trunk/examples/svcomp/ReachSafety.prp --file ../../../trunk/examples/svcomp/float-newlib/float_req_bl_0480_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_0480_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 8015c985f157600a44233f2d61865f454dda9bb9 --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_0480_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 8015c985f157600a44233f2d61865f454dda9bb9 --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 18:18:21,055 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-21 18:18:21,057 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-21 18:18:21,070 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-21 18:18:21,070 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-21 18:18:21,071 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-21 18:18:21,073 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-21 18:18:21,075 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-21 18:18:21,077 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-21 18:18:21,078 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-21 18:18:21,080 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-21 18:18:21,080 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-21 18:18:21,081 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-21 18:18:21,082 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-21 18:18:21,084 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-21 18:18:21,085 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-21 18:18:21,086 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-21 18:18:21,088 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-21 18:18:21,090 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-21 18:18:21,092 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-21 18:18:21,094 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-21 18:18:21,095 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-21 18:18:21,098 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-21 18:18:21,098 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-21 18:18:21,099 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-21 18:18:21,100 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-21 18:18:21,101 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-21 18:18:21,102 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-21 18:18:21,103 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-21 18:18:21,104 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-21 18:18:21,105 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-21 18:18:21,105 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-21 18:18:21,106 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-21 18:18:21,106 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-21 18:18:21,108 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-21 18:18:21,109 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-21 18:18:21,109 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-09-21 18:18:21,125 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-21 18:18:21,125 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-21 18:18:21,126 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-21 18:18:21,127 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-09-21 18:18:21,127 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-09-21 18:18:21,128 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-09-21 18:18:21,128 INFO L133 SettingsManager]: * Use SBE=true [2018-09-21 18:18:21,128 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-21 18:18:21,128 INFO L133 SettingsManager]: * sizeof long=4 [2018-09-21 18:18:21,128 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-21 18:18:21,128 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-09-21 18:18:21,129 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-21 18:18:21,129 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-21 18:18:21,129 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-21 18:18:21,129 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-21 18:18:21,131 INFO L133 SettingsManager]: * sizeof long double=12 [2018-09-21 18:18:21,131 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-21 18:18:21,131 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-21 18:18:21,132 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-21 18:18:21,132 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-21 18:18:21,132 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-21 18:18:21,132 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-21 18:18:21,133 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-21 18:18:21,133 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-21 18:18:21,133 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-21 18:18:21,133 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-21 18:18:21,133 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-09-21 18:18:21,134 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-21 18:18:21,134 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-21 18:18:21,134 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 -> 8015c985f157600a44233f2d61865f454dda9bb9 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 18:18:21,198 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-21 18:18:21,215 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-21 18:18:21,223 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-21 18:18:21,225 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-21 18:18:21,225 INFO L276 PluginConnector]: CDTParser initialized [2018-09-21 18:18:21,226 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_0480_true-unreach-call.c [2018-09-21 18:18:21,611 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bef8cfa57/804272831f2c4192aab5aa63e3b0f836/FLAG50e1aced0 [2018-09-21 18:18:21,806 INFO L277 CDTParser]: Found 1 translation units. [2018-09-21 18:18:21,807 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/float_req_bl_0480_true-unreach-call.c [2018-09-21 18:18:21,818 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bef8cfa57/804272831f2c4192aab5aa63e3b0f836/FLAG50e1aced0 [2018-09-21 18:18:21,835 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bef8cfa57/804272831f2c4192aab5aa63e3b0f836 [2018-09-21 18:18:21,840 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-21 18:18:21,843 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-21 18:18:21,845 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-21 18:18:21,845 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-21 18:18:21,853 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-21 18:18:21,854 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 06:18:21" (1/1) ... [2018-09-21 18:18:21,857 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b73068 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:18:21, skipping insertion in model container [2018-09-21 18:18:21,858 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 06:18:21" (1/1) ... [2018-09-21 18:18:21,871 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-21 18:18:22,169 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-21 18:18:22,188 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-21 18:18:22,227 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-21 18:18:22,269 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:18:22 WrapperNode [2018-09-21 18:18:22,269 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-21 18:18:22,270 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-21 18:18:22,271 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-21 18:18:22,271 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-21 18:18:22,299 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:18:22" (1/1) ... [2018-09-21 18:18:22,299 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:18:22" (1/1) ... [2018-09-21 18:18:22,314 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:18:22" (1/1) ... [2018-09-21 18:18:22,315 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:18:22" (1/1) ... [2018-09-21 18:18:22,327 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:18:22" (1/1) ... [2018-09-21 18:18:22,336 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:18:22" (1/1) ... [2018-09-21 18:18:22,339 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:18:22" (1/1) ... [2018-09-21 18:18:22,344 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-21 18:18:22,345 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-21 18:18:22,345 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-21 18:18:22,345 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-21 18:18:22,346 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:18:22" (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 18:18:22,501 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-21 18:18:22,501 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-21 18:18:22,501 INFO L138 BoogieDeclarations]: Found implementation of procedure __ieee754_sqrtf [2018-09-21 18:18:22,501 INFO L138 BoogieDeclarations]: Found implementation of procedure __ieee754_acosf [2018-09-21 18:18:22,501 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_float [2018-09-21 18:18:22,502 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-21 18:18:22,502 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-09-21 18:18:22,502 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2018-09-21 18:18:22,502 INFO L130 BoogieDeclarations]: Found specification of procedure __ieee754_sqrtf [2018-09-21 18:18:22,502 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-09-21 18:18:22,502 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2018-09-21 18:18:22,503 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-09-21 18:18:22,503 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-09-21 18:18:22,503 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-09-21 18:18:22,503 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2018-09-21 18:18:22,503 INFO L130 BoogieDeclarations]: Found specification of procedure __ieee754_acosf [2018-09-21 18:18:22,503 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_float [2018-09-21 18:18:22,503 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-21 18:18:22,504 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-21 18:18:22,504 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-21 18:18:22,504 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2018-09-21 18:18:22,504 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~real [2018-09-21 18:18:23,422 INFO L373 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-21 18:18:23,423 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 06:18:23 BoogieIcfgContainer [2018-09-21 18:18:23,423 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-21 18:18:23,424 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-21 18:18:23,424 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-21 18:18:23,428 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-21 18:18:23,428 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 06:18:21" (1/3) ... [2018-09-21 18:18:23,429 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27d17ab7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 06:18:23, skipping insertion in model container [2018-09-21 18:18:23,429 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:18:22" (2/3) ... [2018-09-21 18:18:23,429 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27d17ab7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 06:18:23, skipping insertion in model container [2018-09-21 18:18:23,429 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 06:18:23" (3/3) ... [2018-09-21 18:18:23,431 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_0480_true-unreach-call.c [2018-09-21 18:18:23,441 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-21 18:18:23,449 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-21 18:18:23,493 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-21 18:18:23,493 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-21 18:18:23,494 INFO L382 AbstractCegarLoop]: Hoare is false [2018-09-21 18:18:23,494 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-21 18:18:23,494 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-21 18:18:23,494 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-21 18:18:23,494 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-21 18:18:23,495 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-21 18:18:23,495 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-21 18:18:23,512 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states. [2018-09-21 18:18:23,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-09-21 18:18:23,525 INFO L368 BasicCegarLoop]: Found error trace [2018-09-21 18:18:23,526 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-21 18:18:23,529 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-21 18:18:23,535 INFO L82 PathProgramCache]: Analyzing trace with hash 1080794843, now seen corresponding path program 1 times [2018-09-21 18:18:23,537 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-21 18:18:23,537 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-21 18:18:23,585 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-21 18:18:23,585 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-21 18:18:23,585 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-21 18:18:23,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-21 18:18:23,710 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 18:18:23,713 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-21 18:18:23,713 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-09-21 18:18:23,718 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-09-21 18:18:23,736 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-09-21 18:18:23,737 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-09-21 18:18:23,741 INFO L87 Difference]: Start difference. First operand 121 states. Second operand 2 states. [2018-09-21 18:18:23,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-21 18:18:23,781 INFO L93 Difference]: Finished difference Result 121 states and 139 transitions. [2018-09-21 18:18:23,782 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-09-21 18:18:23,783 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 18 [2018-09-21 18:18:23,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-21 18:18:23,796 INFO L225 Difference]: With dead ends: 121 [2018-09-21 18:18:23,796 INFO L226 Difference]: Without dead ends: 117 [2018-09-21 18:18:23,799 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 18:18:23,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2018-09-21 18:18:23,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 117. [2018-09-21 18:18:23,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2018-09-21 18:18:23,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 135 transitions. [2018-09-21 18:18:23,850 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 135 transitions. Word has length 18 [2018-09-21 18:18:23,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-21 18:18:23,850 INFO L480 AbstractCegarLoop]: Abstraction has 117 states and 135 transitions. [2018-09-21 18:18:23,850 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-09-21 18:18:23,851 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 135 transitions. [2018-09-21 18:18:23,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-09-21 18:18:23,853 INFO L368 BasicCegarLoop]: Found error trace [2018-09-21 18:18:23,853 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 18:18:23,853 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-21 18:18:23,854 INFO L82 PathProgramCache]: Analyzing trace with hash 2059688785, now seen corresponding path program 1 times [2018-09-21 18:18:23,854 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-21 18:18:23,854 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-21 18:18:23,856 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-21 18:18:23,856 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-21 18:18:23,856 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-21 18:18:23,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-09-21 18:18:23,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-09-21 18:18:23,978 INFO L443 BasicCegarLoop]: Counterexample might be feasible [2018-09-21 18:18:24,030 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.09 06:18:24 BoogieIcfgContainer [2018-09-21 18:18:24,031 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-21 18:18:24,031 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-09-21 18:18:24,031 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-09-21 18:18:24,032 INFO L276 PluginConnector]: Witness Printer initialized [2018-09-21 18:18:24,032 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 06:18:23" (3/4) ... [2018-09-21 18:18:24,038 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-09-21 18:18:24,038 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-09-21 18:18:24,039 INFO L168 Benchmark]: Toolchain (without parser) took 2198.91 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 147.8 MB). Free memory was 950.5 MB in the beginning and 1.1 GB in the end (delta: -123.2 MB). Peak memory consumption was 24.6 MB. Max. memory is 11.5 GB. [2018-09-21 18:18:24,042 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-09-21 18:18:24,042 INFO L168 Benchmark]: CACSL2BoogieTranslator took 424.71 ms. Allocated memory is still 1.0 GB. Free memory was 950.5 MB in the beginning and 934.4 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 11.5 GB. [2018-09-21 18:18:24,044 INFO L168 Benchmark]: Boogie Preprocessor took 73.76 ms. Allocated memory is still 1.0 GB. Free memory is still 934.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-09-21 18:18:24,045 INFO L168 Benchmark]: RCFGBuilder took 1078.24 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 147.8 MB). Free memory was 934.4 MB in the beginning and 1.1 GB in the end (delta: -166.6 MB). Peak memory consumption was 17.5 MB. Max. memory is 11.5 GB. [2018-09-21 18:18:24,046 INFO L168 Benchmark]: TraceAbstraction took 606.94 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: 27.2 MB). Peak memory consumption was 27.2 MB. Max. memory is 11.5 GB. [2018-09-21 18:18:24,047 INFO L168 Benchmark]: Witness Printer took 7.08 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-09-21 18:18:24,052 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 424.71 ms. Allocated memory is still 1.0 GB. Free memory was 950.5 MB in the beginning and 934.4 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 73.76 ms. Allocated memory is still 1.0 GB. Free memory is still 934.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 1078.24 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 147.8 MB). Free memory was 934.4 MB in the beginning and 1.1 GB in the end (delta: -166.6 MB). Peak memory consumption was 17.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 606.94 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: 27.2 MB). Peak memory consumption was 27.2 MB. Max. memory is 11.5 GB. * Witness Printer took 7.08 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 182]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 181, overapproximation of someUnaryDOUBLEoperation at line 84, overapproximation of bitwiseAnd at line 98. Possible FailurePath: [L12] static const float one_sqrt = 1.0, tiny_sqrt = 1.0e-30; [L81-L88] static const float one_acos = 1.0000000000e+00, pi = 3.1415925026e+00, pio2_hi_acos = 1.5707962513e+00, pio2_lo_acos = 7.5497894159e-08, pS0_acos = 1.6666667163e-01, pS1_acos = -3.2556581497e-01, pS2_acos = 2.0121252537e-01, pS3_acos = -4.0055535734e-02, pS4_acos = 7.9153501429e-04, pS5_acos = 3.4793309169e-05, qS1_acos = -2.4033949375e+00, qS2_acos = 2.0209457874e+00, qS3_acos = -6.8828397989e-01, qS4_acos = 7.7038154006e-02; VAL [\old(one_acos)=4294967314, \old(one_sqrt)=4294967306, \old(pi)=4294967305, \old(pi)=4294967308, \old(pi)=4294967317, \old(pS0_acos)=4294967300, \old(pS1_acos)=4294967315, \old(pS2_acos)=4294967316, \old(pS3_acos)=4294967303, \old(pS4_acos)=4294967307, \old(pS5_acos)=4294967318, \old(qS1_acos)=4294967302, \old(qS2_acos)=4294967309, \old(qS3_acos)=4294967312, \old(qS4_acos)=4294967304, \old(tiny_sqrt)=4294967313, one_acos=1, one_sqrt=1, pi=15707962513/5000000000, pi=75497894159/1000000000000000000, pi=15707962513/10000000000, pS0_acos=16666667163/100000000000, pS2_acos=20121252537/100000000000, pS4_acos=79153501429/100000000000000, pS5_acos=34793309169/1000000000000000, qS2_acos=10104728937/5000000000, qS4_acos=38519077003/500000000000, tiny_sqrt=1/1000000000000000000000000000000] [L177] float x = 1.0f; VAL [one_acos=1, one_sqrt=1, pi=15707962513/10000000000, pi=15707962513/5000000000, pi=75497894159/1000000000000000000, pS0_acos=16666667163/100000000000, pS2_acos=20121252537/100000000000, pS4_acos=79153501429/100000000000000, pS5_acos=34793309169/1000000000000000, qS2_acos=10104728937/5000000000, qS4_acos=38519077003/500000000000, tiny_sqrt=1/1000000000000000000000000000000, x=1] [L178] CALL, EXPR __ieee754_acosf(x) VAL [\old(x)=1, one_acos=1, one_sqrt=1, pi=15707962513/5000000000, pi=15707962513/10000000000, pi=75497894159/1000000000000000000, pS0_acos=16666667163/100000000000, pS2_acos=20121252537/100000000000, pS4_acos=79153501429/100000000000000, pS5_acos=34793309169/1000000000000000, qS2_acos=10104728937/5000000000, qS4_acos=38519077003/500000000000, tiny_sqrt=1/1000000000000000000000000000000] [L91] float z, p, q, r, w, s, c, df; [L92] __int32_t hx, ix; VAL [\old(x)=1, one_acos=1, one_sqrt=1, pi=15707962513/5000000000, pi=75497894159/1000000000000000000, pi=15707962513/10000000000, pS0_acos=16666667163/100000000000, pS2_acos=20121252537/100000000000, pS4_acos=79153501429/100000000000000, pS5_acos=34793309169/1000000000000000, qS2_acos=10104728937/5000000000, qS4_acos=38519077003/500000000000, tiny_sqrt=1/1000000000000000000000000000000, x=1] [L94] FCALL ieee_float_shape_type gf_u; VAL [\old(x)=1, gf_u={4294967310:0}, one_acos=1, one_sqrt=1, pi=15707962513/5000000000, pi=75497894159/1000000000000000000, pi=15707962513/10000000000, pS0_acos=16666667163/100000000000, pS2_acos=20121252537/100000000000, pS4_acos=79153501429/100000000000000, pS5_acos=34793309169/1000000000000000, qS2_acos=10104728937/5000000000, qS4_acos=38519077003/500000000000, tiny_sqrt=1/1000000000000000000000000000000, x=1] [L95] FCALL gf_u.value = (x) VAL [\old(x)=1, gf_u={4294967310:0}, one_acos=1, one_sqrt=1, pi=15707962513/5000000000, pi=75497894159/1000000000000000000, pi=15707962513/10000000000, pS0_acos=16666667163/100000000000, pS2_acos=20121252537/100000000000, pS4_acos=79153501429/100000000000000, pS5_acos=34793309169/1000000000000000, qS2_acos=10104728937/5000000000, qS4_acos=38519077003/500000000000, tiny_sqrt=1/1000000000000000000000000000000, x=1] [L96] EXPR, FCALL gf_u.word VAL [\old(x)=1, gf_u={4294967310:0}, gf_u.word=4294967299, one_acos=1, one_sqrt=1, pi=15707962513/10000000000, pi=75497894159/1000000000000000000, pi=15707962513/5000000000, pS0_acos=16666667163/100000000000, pS2_acos=20121252537/100000000000, pS4_acos=79153501429/100000000000000, pS5_acos=34793309169/1000000000000000, qS2_acos=10104728937/5000000000, qS4_acos=38519077003/500000000000, tiny_sqrt=1/1000000000000000000000000000000, x=1] [L96] (hx) = gf_u.word VAL [\old(x)=1, gf_u={4294967310:0}, gf_u.word=4294967299, hx=3, one_acos=1, one_sqrt=1, pi=15707962513/5000000000, pi=15707962513/10000000000, pi=75497894159/1000000000000000000, pS0_acos=16666667163/100000000000, pS2_acos=20121252537/100000000000, pS4_acos=79153501429/100000000000000, pS5_acos=34793309169/1000000000000000, qS2_acos=10104728937/5000000000, qS4_acos=38519077003/500000000000, tiny_sqrt=1/1000000000000000000000000000000, x=1] [L96] FCALL (hx) = gf_u.word VAL [(hx) = gf_u.word=4294967319, \old(x)=1, gf_u={4294967310:0}, gf_u.word=4294967299, hx=3, one_acos=1, one_sqrt=1, pi=75497894159/1000000000000000000, pi=15707962513/5000000000, pi=15707962513/10000000000, pS0_acos=16666667163/100000000000, pS2_acos=20121252537/100000000000, pS4_acos=79153501429/100000000000000, pS5_acos=34793309169/1000000000000000, qS2_acos=10104728937/5000000000, qS4_acos=38519077003/500000000000, tiny_sqrt=1/1000000000000000000000000000000, x=1] [L97] COND FALSE !(0) VAL [\old(x)=1, hx=3, one_acos=1, one_sqrt=1, pi=75497894159/1000000000000000000, pi=15707962513/10000000000, pi=15707962513/5000000000, pS0_acos=16666667163/100000000000, pS2_acos=20121252537/100000000000, pS4_acos=79153501429/100000000000000, pS5_acos=34793309169/1000000000000000, qS2_acos=10104728937/5000000000, qS4_acos=38519077003/500000000000, tiny_sqrt=1/1000000000000000000000000000000, x=1] [L98] ix = hx & 0x7fffffff VAL [\old(x)=1, hx=3, one_acos=1, one_sqrt=1, pi=75497894159/1000000000000000000, pi=15707962513/10000000000, pi=15707962513/5000000000, pS0_acos=16666667163/100000000000, pS2_acos=20121252537/100000000000, pS4_acos=79153501429/100000000000000, pS5_acos=34793309169/1000000000000000, qS2_acos=10104728937/5000000000, qS4_acos=38519077003/500000000000, tiny_sqrt=1/1000000000000000000000000000000, x=1] [L99] COND TRUE ix == 0x3f800000 VAL [\old(x)=1, hx=3, ix=1065353216, one_acos=1, one_sqrt=1, pi=15707962513/5000000000, pi=15707962513/10000000000, pi=75497894159/1000000000000000000, pS0_acos=16666667163/100000000000, pS2_acos=20121252537/100000000000, pS4_acos=79153501429/100000000000000, pS5_acos=34793309169/1000000000000000, qS2_acos=10104728937/5000000000, qS4_acos=38519077003/500000000000, tiny_sqrt=1/1000000000000000000000000000000, x=1] [L100] COND TRUE hx > 0 [L101] RET return 0.0; VAL [\old(x)=1, \result=0, hx=3, ix=1065353216, one_acos=1, one_sqrt=1, pi=15707962513/5000000000, pi=15707962513/10000000000, pi=75497894159/1000000000000000000, pS0_acos=16666667163/100000000000, pS2_acos=20121252537/100000000000, pS4_acos=79153501429/100000000000000, pS5_acos=34793309169/1000000000000000, qS2_acos=10104728937/5000000000, qS4_acos=38519077003/500000000000, tiny_sqrt=1/1000000000000000000000000000000, x=1] [L178] EXPR __ieee754_acosf(x) VAL [__ieee754_acosf(x)=0, one_acos=1, one_sqrt=1, pi=15707962513/10000000000, pi=15707962513/5000000000, pi=75497894159/1000000000000000000, pS0_acos=16666667163/100000000000, pS2_acos=20121252537/100000000000, pS4_acos=79153501429/100000000000000, pS5_acos=34793309169/1000000000000000, qS2_acos=10104728937/5000000000, qS4_acos=38519077003/500000000000, tiny_sqrt=1/1000000000000000000000000000000, x=1] [L178] float res = __ieee754_acosf(x); [L181] EXPR res == 0.0f && __signbit_float(res) == 0 VAL [one_acos=1, one_sqrt=1, pi=75497894159/1000000000000000000, pi=15707962513/5000000000, pi=15707962513/10000000000, pS0_acos=16666667163/100000000000, pS2_acos=20121252537/100000000000, pS4_acos=79153501429/100000000000000, pS5_acos=34793309169/1000000000000000, qS2_acos=10104728937/5000000000, qS4_acos=38519077003/500000000000, res=0, res == 0.0f && __signbit_float(res) == 0=0, tiny_sqrt=1/1000000000000000000000000000000, x=1] [L181] COND FALSE, EXPR !(res == 0.0f && __signbit_float(res) == 0) VAL [one_acos=1, one_sqrt=1, pi=75497894159/1000000000000000000, pi=15707962513/10000000000, pi=15707962513/5000000000, pS0_acos=16666667163/100000000000, pS2_acos=20121252537/100000000000, pS4_acos=79153501429/100000000000000, pS5_acos=34793309169/1000000000000000, qS2_acos=10104728937/5000000000, qS4_acos=38519077003/500000000000, res=0, res == 0.0f && __signbit_float(res) == 0=0, tiny_sqrt=1/1000000000000000000000000000000, x=1] [L181] COND TRUE !(res == 0.0f && __signbit_float(res) == 0) [L182] __VERIFIER_error() VAL [one_acos=1, one_sqrt=1, pi=75497894159/1000000000000000000, pi=15707962513/10000000000, pi=15707962513/5000000000, pS0_acos=16666667163/100000000000, pS2_acos=20121252537/100000000000, pS4_acos=79153501429/100000000000000, pS5_acos=34793309169/1000000000000000, qS2_acos=10104728937/5000000000, qS4_acos=38519077003/500000000000, res=0, tiny_sqrt=1/1000000000000000000000000000000, x=1] - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 121 locations, 1 error locations. UNSAFE Result, 0.5s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 139 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=121occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 45 NumberOfCodeBlocks, 45 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 17 ConstructedInterpolants, 0 QuantifiedInterpolants, 289 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 18:18:26,447 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-21 18:18:26,450 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-21 18:18:26,468 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-21 18:18:26,468 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-21 18:18:26,469 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-21 18:18:26,471 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-21 18:18:26,473 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-21 18:18:26,478 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-21 18:18:26,479 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-21 18:18:26,480 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-21 18:18:26,482 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-21 18:18:26,485 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-21 18:18:26,486 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-21 18:18:26,490 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-21 18:18:26,491 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-21 18:18:26,491 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-21 18:18:26,495 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-21 18:18:26,500 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-21 18:18:26,502 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-21 18:18:26,505 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-21 18:18:26,507 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-21 18:18:26,510 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-21 18:18:26,510 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-21 18:18:26,511 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-21 18:18:26,514 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-21 18:18:26,515 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-21 18:18:26,515 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-21 18:18:26,516 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-21 18:18:26,519 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-21 18:18:26,521 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-21 18:18:26,522 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-21 18:18:26,522 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-21 18:18:26,522 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-21 18:18:26,523 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-21 18:18:26,526 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-21 18:18:26,529 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2018-09-21 18:18:26,554 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-21 18:18:26,555 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-21 18:18:26,557 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-21 18:18:26,557 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-09-21 18:18:26,558 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-09-21 18:18:26,559 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-09-21 18:18:26,560 INFO L133 SettingsManager]: * Use SBE=true [2018-09-21 18:18:26,560 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-21 18:18:26,560 INFO L133 SettingsManager]: * sizeof long=4 [2018-09-21 18:18:26,561 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-09-21 18:18:26,561 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-21 18:18:26,561 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-21 18:18:26,562 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-21 18:18:26,562 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-21 18:18:26,562 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-09-21 18:18:26,563 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-09-21 18:18:26,563 INFO L133 SettingsManager]: * sizeof long double=12 [2018-09-21 18:18:26,563 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-21 18:18:26,563 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-21 18:18:26,563 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-21 18:18:26,564 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-21 18:18:26,564 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-21 18:18:26,564 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-21 18:18:26,564 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-21 18:18:26,567 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-21 18:18:26,567 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-21 18:18:26,567 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-21 18:18:26,567 INFO L133 SettingsManager]: * Trace refinement strategy=WOLF [2018-09-21 18:18:26,568 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-21 18:18:26,568 INFO L133 SettingsManager]: * Command for external solver=cvc4nyu --tear-down-incremental --rewrite-divk --print-success --lang smt [2018-09-21 18:18:26,568 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-09-21 18:18:26,568 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 -> 8015c985f157600a44233f2d61865f454dda9bb9 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 18:18:26,649 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-21 18:18:26,663 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-21 18:18:26,667 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-21 18:18:26,669 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-21 18:18:26,669 INFO L276 PluginConnector]: CDTParser initialized [2018-09-21 18:18:26,670 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_0480_true-unreach-call.c [2018-09-21 18:18:27,057 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1233d1172/49c00e86382b4a0ca8e35feec526ecba/FLAG0ed2cba1d [2018-09-21 18:18:27,269 INFO L277 CDTParser]: Found 1 translation units. [2018-09-21 18:18:27,270 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/float_req_bl_0480_true-unreach-call.c [2018-09-21 18:18:27,283 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1233d1172/49c00e86382b4a0ca8e35feec526ecba/FLAG0ed2cba1d [2018-09-21 18:18:27,299 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1233d1172/49c00e86382b4a0ca8e35feec526ecba [2018-09-21 18:18:27,304 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-21 18:18:27,307 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-21 18:18:27,309 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-21 18:18:27,309 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-21 18:18:27,316 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-21 18:18:27,317 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 06:18:27" (1/1) ... [2018-09-21 18:18:27,321 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@cba804d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:18:27, skipping insertion in model container [2018-09-21 18:18:27,321 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 06:18:27" (1/1) ... [2018-09-21 18:18:27,334 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-21 18:18:27,604 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-21 18:18:27,626 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-21 18:18:27,714 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-21 18:18:27,783 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:18:27 WrapperNode [2018-09-21 18:18:27,785 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-21 18:18:27,786 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-21 18:18:27,786 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-21 18:18:27,787 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-21 18:18:27,805 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:18:27" (1/1) ... [2018-09-21 18:18:27,806 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:18:27" (1/1) ... [2018-09-21 18:18:27,835 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:18:27" (1/1) ... [2018-09-21 18:18:27,838 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:18:27" (1/1) ... [2018-09-21 18:18:27,864 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:18:27" (1/1) ... [2018-09-21 18:18:27,883 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:18:27" (1/1) ... [2018-09-21 18:18:27,893 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:18:27" (1/1) ... [2018-09-21 18:18:27,905 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-21 18:18:27,905 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-21 18:18:27,906 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-21 18:18:27,906 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-21 18:18:27,907 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:18:27" (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 18:18:28,099 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-21 18:18:28,099 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-21 18:18:28,100 INFO L138 BoogieDeclarations]: Found implementation of procedure __ieee754_sqrtf [2018-09-21 18:18:28,100 INFO L138 BoogieDeclarations]: Found implementation of procedure __ieee754_acosf [2018-09-21 18:18:28,100 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_float [2018-09-21 18:18:28,100 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-21 18:18:28,101 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-09-21 18:18:28,101 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2018-09-21 18:18:28,101 INFO L130 BoogieDeclarations]: Found specification of procedure __ieee754_sqrtf [2018-09-21 18:18:28,101 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-09-21 18:18:28,101 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2018-09-21 18:18:28,104 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2018-09-21 18:18:28,104 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-09-21 18:18:28,105 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2018-09-21 18:18:28,106 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2018-09-21 18:18:28,106 INFO L130 BoogieDeclarations]: Found specification of procedure __ieee754_acosf [2018-09-21 18:18:28,106 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_float [2018-09-21 18:18:28,106 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-21 18:18:28,107 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-21 18:18:28,107 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-21 18:18:28,107 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2018-09-21 18:18:28,107 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intFLOATTYPE4 [2018-09-21 18:18:28,379 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-21 18:18:28,423 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-21 18:18:35,571 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-21 18:18:35,593 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-21 18:18:39,124 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-21 18:18:39,136 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-21 18:18:39,168 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-21 18:18:39,181 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-21 18:18:39,198 INFO L373 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-21 18:18:39,199 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 06:18:39 BoogieIcfgContainer [2018-09-21 18:18:39,199 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-21 18:18:39,200 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-21 18:18:39,200 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-21 18:18:39,204 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-21 18:18:39,204 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 06:18:27" (1/3) ... [2018-09-21 18:18:39,205 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b7428c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 06:18:39, skipping insertion in model container [2018-09-21 18:18:39,205 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:18:27" (2/3) ... [2018-09-21 18:18:39,205 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b7428c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 06:18:39, skipping insertion in model container [2018-09-21 18:18:39,206 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 06:18:39" (3/3) ... [2018-09-21 18:18:39,208 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_0480_true-unreach-call.c [2018-09-21 18:18:39,218 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-21 18:18:39,226 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-21 18:18:39,269 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-21 18:18:39,270 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-21 18:18:39,270 INFO L382 AbstractCegarLoop]: Hoare is false [2018-09-21 18:18:39,270 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-21 18:18:39,270 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-21 18:18:39,271 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-21 18:18:39,271 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-21 18:18:39,271 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-21 18:18:39,271 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-21 18:18:39,292 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states. [2018-09-21 18:18:39,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-09-21 18:18:39,305 INFO L368 BasicCegarLoop]: Found error trace [2018-09-21 18:18:39,306 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-21 18:18:39,309 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-21 18:18:39,315 INFO L82 PathProgramCache]: Analyzing trace with hash 1080794843, now seen corresponding path program 1 times [2018-09-21 18:18:39,319 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-21 18:18:39,320 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2018-09-21 18:18:39,330 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-21 18:18:39,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-21 18:18:39,435 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-21 18:18:39,457 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 18:18:39,458 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-21 18:18:39,477 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-21 18:18:39,478 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-09-21 18:18:39,483 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-09-21 18:18:39,501 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-09-21 18:18:39,502 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-09-21 18:18:39,505 INFO L87 Difference]: Start difference. First operand 121 states. Second operand 2 states. [2018-09-21 18:18:39,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-21 18:18:39,537 INFO L93 Difference]: Finished difference Result 121 states and 139 transitions. [2018-09-21 18:18:39,537 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-09-21 18:18:39,538 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 18 [2018-09-21 18:18:39,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-21 18:18:39,553 INFO L225 Difference]: With dead ends: 121 [2018-09-21 18:18:39,554 INFO L226 Difference]: Without dead ends: 117 [2018-09-21 18:18:39,556 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 17 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 18:18:39,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2018-09-21 18:18:39,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 117. [2018-09-21 18:18:39,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2018-09-21 18:18:39,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 135 transitions. [2018-09-21 18:18:39,630 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 135 transitions. Word has length 18 [2018-09-21 18:18:39,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-21 18:18:39,631 INFO L480 AbstractCegarLoop]: Abstraction has 117 states and 135 transitions. [2018-09-21 18:18:39,631 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-09-21 18:18:39,631 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 135 transitions. [2018-09-21 18:18:39,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-09-21 18:18:39,634 INFO L368 BasicCegarLoop]: Found error trace [2018-09-21 18:18:39,635 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 18:18:39,635 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-21 18:18:39,636 INFO L82 PathProgramCache]: Analyzing trace with hash 2059688785, now seen corresponding path program 1 times [2018-09-21 18:18:39,638 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-21 18:18:39,638 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 18:18:39,645 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-21 18:18:39,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-21 18:18:39,749 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-21 18:18:39,924 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 18:18:39,924 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-21 18:18:39,939 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-21 18:18:39,940 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-09-21 18:18:39,941 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-21 18:18:39,942 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-21 18:18:39,942 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-09-21 18:18:39,942 INFO L87 Difference]: Start difference. First operand 117 states and 135 transitions. Second operand 5 states. [2018-09-21 18:18:48,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-21 18:18:48,983 INFO L93 Difference]: Finished difference Result 121 states and 139 transitions. [2018-09-21 18:18:49,282 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-09-21 18:18:49,283 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 27 [2018-09-21 18:18:49,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-21 18:18:49,289 INFO L225 Difference]: With dead ends: 121 [2018-09-21 18:18:49,289 INFO L226 Difference]: Without dead ends: 121 [2018-09-21 18:18:49,290 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-09-21 18:18:49,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2018-09-21 18:18:49,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 121. [2018-09-21 18:18:49,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2018-09-21 18:18:49,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 139 transitions. [2018-09-21 18:18:49,317 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 139 transitions. Word has length 27 [2018-09-21 18:18:49,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-21 18:18:49,318 INFO L480 AbstractCegarLoop]: Abstraction has 121 states and 139 transitions. [2018-09-21 18:18:49,318 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-21 18:18:49,318 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 139 transitions. [2018-09-21 18:18:49,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-09-21 18:18:49,324 INFO L368 BasicCegarLoop]: Found error trace [2018-09-21 18:18:49,324 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 18:18:49,324 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-21 18:18:49,325 INFO L82 PathProgramCache]: Analyzing trace with hash -1347774830, now seen corresponding path program 1 times [2018-09-21 18:18:49,326 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-21 18:18:49,326 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 18:18:49,334 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 18:18:49,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-21 18:18:49,487 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-21 18:18:49,562 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 18:18:49,569 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 18:18:49,569 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-21 18:18:49,576 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-21 18:18:49,592 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 18:18:49,593 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:21, output treesize:21 [2018-09-21 18:18:49,627 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 18:18:49,632 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 18:18:49,632 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-21 18:18:49,636 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-21 18:18:49,639 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 18:18:49,640 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:29, output treesize:9 [2018-09-21 18:18:49,932 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 18:18:49,932 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-21 18:18:49,949 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-21 18:18:49,950 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-09-21 18:18:49,950 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-09-21 18:18:49,950 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-09-21 18:18:49,951 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-09-21 18:18:49,951 INFO L87 Difference]: Start difference. First operand 121 states and 139 transitions. Second operand 8 states. [2018-09-21 18:18:50,504 WARN L178 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2018-09-21 18:18:50,734 WARN L178 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2018-09-21 18:18:51,485 WARN L178 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-09-21 18:18:57,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-21 18:18:57,739 INFO L93 Difference]: Finished difference Result 125 states and 142 transitions. [2018-09-21 18:18:57,740 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-09-21 18:18:57,740 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 27 [2018-09-21 18:18:57,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-21 18:18:57,744 INFO L225 Difference]: With dead ends: 125 [2018-09-21 18:18:57,745 INFO L226 Difference]: Without dead ends: 123 [2018-09-21 18:18:57,745 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2018-09-21 18:18:57,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2018-09-21 18:18:57,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 121. [2018-09-21 18:18:57,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2018-09-21 18:18:57,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 138 transitions. [2018-09-21 18:18:57,757 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 138 transitions. Word has length 27 [2018-09-21 18:18:57,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-21 18:18:57,758 INFO L480 AbstractCegarLoop]: Abstraction has 121 states and 138 transitions. [2018-09-21 18:18:57,758 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-09-21 18:18:57,759 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 138 transitions. [2018-09-21 18:18:57,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-09-21 18:18:57,760 INFO L368 BasicCegarLoop]: Found error trace [2018-09-21 18:18:57,760 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 18:18:57,760 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-21 18:18:57,762 INFO L82 PathProgramCache]: Analyzing trace with hash -1968610319, now seen corresponding path program 1 times [2018-09-21 18:18:57,762 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-21 18:18:57,762 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 18:18:57,768 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-21 18:18:58,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-21 18:18:58,035 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-21 18:18:58,076 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 18:18:58,088 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 18:18:58,088 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-21 18:18:58,092 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-21 18:18:58,105 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 18:18:58,106 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:21, output treesize:21 [2018-09-21 18:18:58,175 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 18:18:58,181 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 18:18:58,182 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-21 18:18:58,205 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-21 18:18:58,211 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 18:18:58,211 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:29, output treesize:9 [2018-09-21 18:18:58,367 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 18:18:58,367 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-21 18:18:58,384 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-21 18:18:58,384 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2018-09-21 18:18:58,385 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-21 18:18:58,385 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-21 18:18:58,385 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2018-09-21 18:18:58,386 INFO L87 Difference]: Start difference. First operand 121 states and 138 transitions. Second operand 9 states. [2018-09-21 18:19:05,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-21 18:19:05,390 INFO L93 Difference]: Finished difference Result 123 states and 139 transitions. [2018-09-21 18:19:05,391 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-09-21 18:19:05,391 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 27 [2018-09-21 18:19:05,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-21 18:19:05,393 INFO L225 Difference]: With dead ends: 123 [2018-09-21 18:19:05,393 INFO L226 Difference]: Without dead ends: 98 [2018-09-21 18:19:05,394 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 18:19:05,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2018-09-21 18:19:05,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98. [2018-09-21 18:19:05,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2018-09-21 18:19:05,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 111 transitions. [2018-09-21 18:19:05,409 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 111 transitions. Word has length 27 [2018-09-21 18:19:05,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-21 18:19:05,409 INFO L480 AbstractCegarLoop]: Abstraction has 98 states and 111 transitions. [2018-09-21 18:19:05,410 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-21 18:19:05,410 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 111 transitions. [2018-09-21 18:19:05,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-09-21 18:19:05,411 INFO L368 BasicCegarLoop]: Found error trace [2018-09-21 18:19:05,411 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 18:19:05,412 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-21 18:19:05,412 INFO L82 PathProgramCache]: Analyzing trace with hash -1454553322, now seen corresponding path program 1 times [2018-09-21 18:19:05,412 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-21 18:19:05,413 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 18:19:05,417 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-21 18:19:06,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-21 18:19:06,632 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-21 18:19:06,667 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 18:19:06,674 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 18:19:06,675 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-21 18:19:06,683 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-21 18:19:06,693 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 18:19:06,693 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:21, output treesize:21 [2018-09-21 18:19:06,718 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 18:19:06,723 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 18:19:06,723 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-21 18:19:06,727 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-21 18:19:06,731 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 18:19:06,732 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:29, output treesize:9 [2018-09-21 18:19:06,875 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 18:19:06,875 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-21 18:19:06,904 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-21 18:19:06,904 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2018-09-21 18:19:06,905 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-21 18:19:06,905 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-21 18:19:06,905 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2018-09-21 18:19:06,906 INFO L87 Difference]: Start difference. First operand 98 states and 111 transitions. Second operand 9 states. [2018-09-21 18:19:12,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-21 18:19:12,864 INFO L93 Difference]: Finished difference Result 100 states and 112 transitions. [2018-09-21 18:19:12,864 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-09-21 18:19:12,865 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 29 [2018-09-21 18:19:12,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-21 18:19:12,866 INFO L225 Difference]: With dead ends: 100 [2018-09-21 18:19:12,866 INFO L226 Difference]: Without dead ends: 97 [2018-09-21 18:19:12,867 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 18:19:12,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2018-09-21 18:19:12,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2018-09-21 18:19:12,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2018-09-21 18:19:12,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 109 transitions. [2018-09-21 18:19:12,876 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 109 transitions. Word has length 29 [2018-09-21 18:19:12,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-21 18:19:12,876 INFO L480 AbstractCegarLoop]: Abstraction has 97 states and 109 transitions. [2018-09-21 18:19:12,876 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-21 18:19:12,876 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 109 transitions. [2018-09-21 18:19:12,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2018-09-21 18:19:12,879 INFO L368 BasicCegarLoop]: Found error trace [2018-09-21 18:19:12,879 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] [2018-09-21 18:19:12,880 INFO L423 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-21 18:19:12,880 INFO L82 PathProgramCache]: Analyzing trace with hash -415061973, now seen corresponding path program 1 times [2018-09-21 18:19:12,880 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-21 18:19:12,881 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 18:19:12,886 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-21 18:19:12,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-21 18:19:12,989 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-21 18:19:13,056 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 18:19:13,061 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 18:19:13,062 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-21 18:19:13,068 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-21 18:19:13,079 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 18:19:13,079 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:21, output treesize:21 [2018-09-21 18:19:13,111 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 18:19:13,116 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 18:19:13,116 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-21 18:19:13,121 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-21 18:19:13,125 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 18:19:13,125 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:29, output treesize:9 [2018-09-21 18:19:13,309 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 18:19:13,309 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-21 18:19:13,321 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-21 18:19:13,321 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2018-09-21 18:19:13,321 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-09-21 18:19:13,322 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-09-21 18:19:13,322 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2018-09-21 18:19:13,322 INFO L87 Difference]: Start difference. First operand 97 states and 109 transitions. Second operand 12 states. [2018-09-21 18:19:16,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-21 18:19:16,369 INFO L93 Difference]: Finished difference Result 100 states and 112 transitions. [2018-09-21 18:19:16,370 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-09-21 18:19:16,370 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 43 [2018-09-21 18:19:16,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-21 18:19:16,372 INFO L225 Difference]: With dead ends: 100 [2018-09-21 18:19:16,373 INFO L226 Difference]: Without dead ends: 92 [2018-09-21 18:19:16,374 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=67, Invalid=313, Unknown=0, NotChecked=0, Total=380 [2018-09-21 18:19:16,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2018-09-21 18:19:16,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2018-09-21 18:19:16,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2018-09-21 18:19:16,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 103 transitions. [2018-09-21 18:19:16,382 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 103 transitions. Word has length 43 [2018-09-21 18:19:16,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-21 18:19:16,382 INFO L480 AbstractCegarLoop]: Abstraction has 92 states and 103 transitions. [2018-09-21 18:19:16,382 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-09-21 18:19:16,382 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 103 transitions. [2018-09-21 18:19:16,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2018-09-21 18:19:16,384 INFO L368 BasicCegarLoop]: Found error trace [2018-09-21 18:19:16,384 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 18:19:16,384 INFO L423 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-21 18:19:16,385 INFO L82 PathProgramCache]: Analyzing trace with hash -1539319839, now seen corresponding path program 1 times [2018-09-21 18:19:16,385 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-21 18:19:16,385 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 18:19:16,391 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-21 18:19:17,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-21 18:19:17,761 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-21 18:19:17,799 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 18:19:17,803 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 18:19:17,804 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-21 18:19:17,808 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-21 18:19:17,819 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 18:19:17,820 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:21, output treesize:21 [2018-09-21 18:19:17,872 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 18:19:17,877 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 18:19:17,878 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-21 18:19:17,882 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-21 18:19:17,885 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 18:19:17,885 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:29, output treesize:9 [2018-09-21 18:19:18,028 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 18:19:18,029 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-21 18:19:18,066 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-21 18:19:18,066 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2018-09-21 18:19:18,068 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-21 18:19:18,068 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-21 18:19:18,068 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2018-09-21 18:19:18,068 INFO L87 Difference]: Start difference. First operand 92 states and 103 transitions. Second operand 9 states. [2018-09-21 18:19:21,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-21 18:19:21,440 INFO L93 Difference]: Finished difference Result 71 states and 81 transitions. [2018-09-21 18:19:21,441 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-09-21 18:19:21,442 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 46 [2018-09-21 18:19:21,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-21 18:19:21,443 INFO L225 Difference]: With dead ends: 71 [2018-09-21 18:19:21,443 INFO L226 Difference]: Without dead ends: 0 [2018-09-21 18:19:21,443 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2018-09-21 18:19:21,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-09-21 18:19:21,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-09-21 18:19:21,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-09-21 18:19:21,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-09-21 18:19:21,444 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 46 [2018-09-21 18:19:21,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-21 18:19:21,444 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-09-21 18:19:21,444 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-21 18:19:21,447 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-09-21 18:19:21,447 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-09-21 18:19:21,453 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.09 06:19:21 BoogieIcfgContainer [2018-09-21 18:19:21,453 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-21 18:19:21,453 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-09-21 18:19:21,454 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-09-21 18:19:21,454 INFO L276 PluginConnector]: Witness Printer initialized [2018-09-21 18:19:21,455 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 06:18:39" (3/4) ... [2018-09-21 18:19:21,458 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-09-21 18:19:21,466 INFO L316 RCFGBacktranslator]: Ignoring RootEdge to procedure __ieee754_acosf [2018-09-21 18:19:21,466 INFO L316 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-09-21 18:19:21,467 INFO L316 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-09-21 18:19:21,467 INFO L316 RCFGBacktranslator]: Ignoring RootEdge to procedure __ieee754_sqrtf [2018-09-21 18:19:21,467 INFO L316 RCFGBacktranslator]: Ignoring RootEdge to procedure __signbit_float [2018-09-21 18:19:21,474 INFO L850 BoogieBacktranslator]: Reduced CFG by removing 34 nodes and edges [2018-09-21 18:19:21,475 INFO L850 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2018-09-21 18:19:21,476 INFO L850 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2018-09-21 18:19:21,477 INFO L850 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-09-21 18:19:21,586 INFO L145 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2018-09-21 18:19:21,586 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-09-21 18:19:21,587 INFO L168 Benchmark]: Toolchain (without parser) took 54282.52 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 205.0 MB). Free memory was 950.5 MB in the beginning and 1.1 GB in the end (delta: -167.5 MB). Peak memory consumption was 37.5 MB. Max. memory is 11.5 GB. [2018-09-21 18:19:21,589 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 18:19:21,589 INFO L168 Benchmark]: CACSL2BoogieTranslator took 477.24 ms. Allocated memory is still 1.0 GB. Free memory was 950.5 MB in the beginning and 934.4 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 11.5 GB. [2018-09-21 18:19:21,589 INFO L168 Benchmark]: Boogie Preprocessor took 118.65 ms. Allocated memory is still 1.0 GB. Free memory was 934.4 MB in the beginning and 929.0 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-09-21 18:19:21,590 INFO L168 Benchmark]: RCFGBuilder took 11293.60 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 143.7 MB). Free memory was 929.0 MB in the beginning and 1.1 GB in the end (delta: -159.2 MB). Peak memory consumption was 18.0 MB. Max. memory is 11.5 GB. [2018-09-21 18:19:21,590 INFO L168 Benchmark]: TraceAbstraction took 42253.16 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 61.3 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: -44.8 MB). Peak memory consumption was 16.5 MB. Max. memory is 11.5 GB. [2018-09-21 18:19:21,592 INFO L168 Benchmark]: Witness Printer took 132.85 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: 15.1 MB). Peak memory consumption was 15.1 MB. Max. memory is 11.5 GB. [2018-09-21 18:19:21,595 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 477.24 ms. Allocated memory is still 1.0 GB. Free memory was 950.5 MB in the beginning and 934.4 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 118.65 ms. Allocated memory is still 1.0 GB. Free memory was 934.4 MB in the beginning and 929.0 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 11293.60 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 143.7 MB). Free memory was 929.0 MB in the beginning and 1.1 GB in the end (delta: -159.2 MB). Peak memory consumption was 18.0 MB. Max. memory is 11.5 GB. * TraceAbstraction took 42253.16 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 61.3 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: -44.8 MB). Peak memory consumption was 16.5 MB. Max. memory is 11.5 GB. * Witness Printer took 132.85 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: 15.1 MB). Peak memory consumption was 15.1 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 182]: 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 6 procedures, 121 locations, 1 error locations. SAFE Result, 42.1s OverallTime, 7 OverallIterations, 1 TraceHistogramMax, 36.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 776 SDtfs, 300 SDslu, 3695 SDs, 0 SdLazy, 450 SolverSat, 23 SolverUnsat, 11 SolverUnknown, 0 SolverNotchecked, 31.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 245 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 3.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=121occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 7 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 2.8s SatisfiabilityAnalysisTime, 2.1s InterpolantComputationTime, 217 NumberOfCodeBlocks, 217 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 210 ConstructedInterpolants, 22 QuantifiedInterpolants, 38155 SizeOfPredicates, 40 NumberOfNonLiveVariables, 791 ConjunctsInSsa, 54 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 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...