/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/Ultimate.py --spec ../../../trunk/examples/svcomp/ReachSafety.prp --file ../../../trunk/examples/svcomp/float-newlib/double_req_bl_1011a_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/double_req_bl_1011a_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 84d0ee37d85bbc2c0fd59ce938796111cbf21a8f --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/double_req_bl_1011a_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 84d0ee37d85bbc2c0fd59ce938796111cbf21a8f --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 18:09:35,907 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-21 18:09:35,909 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-21 18:09:35,929 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-21 18:09:35,929 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-21 18:09:35,930 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-21 18:09:35,932 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-21 18:09:35,933 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-21 18:09:35,936 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-21 18:09:35,937 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-21 18:09:35,938 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-21 18:09:35,938 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-21 18:09:35,940 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-21 18:09:35,941 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-21 18:09:35,942 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-21 18:09:35,943 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-21 18:09:35,944 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-21 18:09:35,946 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-21 18:09:35,949 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-21 18:09:35,951 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-21 18:09:35,952 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-21 18:09:35,954 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-21 18:09:35,957 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-21 18:09:35,957 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-21 18:09:35,958 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-21 18:09:35,959 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-21 18:09:35,960 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-21 18:09:35,962 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-21 18:09:35,963 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-21 18:09:35,964 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-21 18:09:35,965 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-21 18:09:35,966 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-21 18:09:35,966 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-21 18:09:35,966 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-21 18:09:35,968 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-21 18:09:35,969 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-21 18:09:35,970 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-09-21 18:09:35,993 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-21 18:09:35,994 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-21 18:09:35,995 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-21 18:09:35,995 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-09-21 18:09:35,996 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-09-21 18:09:35,996 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-09-21 18:09:35,996 INFO L133 SettingsManager]: * Use SBE=true [2018-09-21 18:09:35,996 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-21 18:09:35,996 INFO L133 SettingsManager]: * sizeof long=4 [2018-09-21 18:09:35,997 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-21 18:09:35,997 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-09-21 18:09:35,997 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-21 18:09:35,997 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-21 18:09:35,997 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-21 18:09:35,997 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-21 18:09:35,998 INFO L133 SettingsManager]: * sizeof long double=12 [2018-09-21 18:09:35,998 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-21 18:09:35,998 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-21 18:09:35,998 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-21 18:09:35,998 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-21 18:09:35,999 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-21 18:09:35,999 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-21 18:09:35,999 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-21 18:09:35,999 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-21 18:09:35,999 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-21 18:09:36,000 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-21 18:09:36,000 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-09-21 18:09:36,000 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-21 18:09:36,000 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-21 18:09:36,000 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 -> 84d0ee37d85bbc2c0fd59ce938796111cbf21a8f 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 18:09:36,062 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-21 18:09:36,077 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-21 18:09:36,081 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-21 18:09:36,083 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-21 18:09:36,084 INFO L276 PluginConnector]: CDTParser initialized [2018-09-21 18:09:36,084 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1011a_true-unreach-call.c [2018-09-21 18:09:36,484 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/de7529880/6b2b9cca718e46049511f1635b1c5969/FLAG664b3b3f9 [2018-09-21 18:09:36,641 INFO L277 CDTParser]: Found 1 translation units. [2018-09-21 18:09:36,642 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1011a_true-unreach-call.c [2018-09-21 18:09:36,650 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/de7529880/6b2b9cca718e46049511f1635b1c5969/FLAG664b3b3f9 [2018-09-21 18:09:36,668 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/de7529880/6b2b9cca718e46049511f1635b1c5969 [2018-09-21 18:09:36,673 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-21 18:09:36,675 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-21 18:09:36,677 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-21 18:09:36,677 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-21 18:09:36,684 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-21 18:09:36,685 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 06:09:36" (1/1) ... [2018-09-21 18:09:36,688 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b33a0c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:09:36, skipping insertion in model container [2018-09-21 18:09:36,689 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 06:09:36" (1/1) ... [2018-09-21 18:09:36,702 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-21 18:09:37,015 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-21 18:09:37,038 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-21 18:09:37,070 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-21 18:09:37,111 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:09:37 WrapperNode [2018-09-21 18:09:37,112 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-21 18:09:37,113 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-21 18:09:37,113 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-21 18:09:37,113 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-21 18:09:37,131 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:09:37" (1/1) ... [2018-09-21 18:09:37,132 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:09:37" (1/1) ... [2018-09-21 18:09:37,146 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:09:37" (1/1) ... [2018-09-21 18:09:37,147 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:09:37" (1/1) ... [2018-09-21 18:09:37,155 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:09:37" (1/1) ... [2018-09-21 18:09:37,161 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:09:37" (1/1) ... [2018-09-21 18:09:37,163 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:09:37" (1/1) ... [2018-09-21 18:09:37,169 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-21 18:09:37,169 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-21 18:09:37,170 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-21 18:09:37,170 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-21 18:09:37,171 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:09:37" (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 18:09:37,242 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-21 18:09:37,242 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-21 18:09:37,242 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_double [2018-09-21 18:09:37,243 INFO L138 BoogieDeclarations]: Found implementation of procedure fabs_double [2018-09-21 18:09:37,243 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-21 18:09:37,243 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-09-21 18:09:37,243 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_double [2018-09-21 18:09:37,243 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-09-21 18:09:37,245 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2018-09-21 18:09:37,246 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-09-21 18:09:37,246 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-09-21 18:09:37,246 INFO L130 BoogieDeclarations]: Found specification of procedure fabs_double [2018-09-21 18:09:37,246 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-09-21 18:09:37,246 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2018-09-21 18:09:37,246 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-21 18:09:37,247 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-21 18:09:37,247 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-21 18:09:37,247 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~real [2018-09-21 18:09:37,247 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2018-09-21 18:09:37,886 INFO L373 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-21 18:09:37,887 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 06:09:37 BoogieIcfgContainer [2018-09-21 18:09:37,887 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-21 18:09:37,889 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-21 18:09:37,889 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-21 18:09:37,893 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-21 18:09:37,894 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 06:09:36" (1/3) ... [2018-09-21 18:09:37,895 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14b0a16d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 06:09:37, skipping insertion in model container [2018-09-21 18:09:37,895 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:09:37" (2/3) ... [2018-09-21 18:09:37,895 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14b0a16d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 06:09:37, skipping insertion in model container [2018-09-21 18:09:37,896 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 06:09:37" (3/3) ... [2018-09-21 18:09:37,900 INFO L112 eAbstractionObserver]: Analyzing ICFG double_req_bl_1011a_true-unreach-call.c [2018-09-21 18:09:37,912 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-21 18:09:37,929 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-21 18:09:37,970 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-21 18:09:37,971 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-21 18:09:37,971 INFO L382 AbstractCegarLoop]: Hoare is false [2018-09-21 18:09:37,971 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-21 18:09:37,971 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-21 18:09:37,971 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-21 18:09:37,972 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-21 18:09:37,972 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-21 18:09:37,972 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-21 18:09:37,989 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states. [2018-09-21 18:09:38,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-09-21 18:09:38,001 INFO L368 BasicCegarLoop]: Found error trace [2018-09-21 18:09:38,003 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-21 18:09:38,006 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-21 18:09:38,012 INFO L82 PathProgramCache]: Analyzing trace with hash 288554348, now seen corresponding path program 1 times [2018-09-21 18:09:38,015 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-21 18:09:38,015 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-21 18:09:38,068 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-21 18:09:38,069 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-21 18:09:38,069 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-21 18:09:38,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-21 18:09:38,157 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 18:09:38,160 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-21 18:09:38,160 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-09-21 18:09:38,164 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-09-21 18:09:38,177 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-09-21 18:09:38,178 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-09-21 18:09:38,181 INFO L87 Difference]: Start difference. First operand 58 states. Second operand 2 states. [2018-09-21 18:09:38,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-21 18:09:38,202 INFO L93 Difference]: Finished difference Result 58 states and 58 transitions. [2018-09-21 18:09:38,202 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-09-21 18:09:38,204 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 17 [2018-09-21 18:09:38,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-21 18:09:38,216 INFO L225 Difference]: With dead ends: 58 [2018-09-21 18:09:38,217 INFO L226 Difference]: Without dead ends: 54 [2018-09-21 18:09:38,219 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 18:09:38,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2018-09-21 18:09:38,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2018-09-21 18:09:38,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2018-09-21 18:09:38,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 54 transitions. [2018-09-21 18:09:38,269 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 54 transitions. Word has length 17 [2018-09-21 18:09:38,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-21 18:09:38,270 INFO L480 AbstractCegarLoop]: Abstraction has 54 states and 54 transitions. [2018-09-21 18:09:38,270 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-09-21 18:09:38,270 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 54 transitions. [2018-09-21 18:09:38,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2018-09-21 18:09:38,272 INFO L368 BasicCegarLoop]: Found error trace [2018-09-21 18:09:38,272 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] [2018-09-21 18:09:38,273 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-21 18:09:38,273 INFO L82 PathProgramCache]: Analyzing trace with hash -1982009839, now seen corresponding path program 1 times [2018-09-21 18:09:38,273 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-21 18:09:38,273 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-21 18:09:38,275 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-21 18:09:38,275 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-21 18:09:38,276 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-21 18:09:38,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-09-21 18:09:38,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-09-21 18:09:38,414 INFO L443 BasicCegarLoop]: Counterexample might be feasible [2018-09-21 18:09:38,471 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.09 06:09:38 BoogieIcfgContainer [2018-09-21 18:09:38,472 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-21 18:09:38,473 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-09-21 18:09:38,473 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-09-21 18:09:38,473 INFO L276 PluginConnector]: Witness Printer initialized [2018-09-21 18:09:38,474 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 06:09:37" (3/4) ... [2018-09-21 18:09:38,479 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-09-21 18:09:38,479 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-09-21 18:09:38,480 INFO L168 Benchmark]: Toolchain (without parser) took 1807.12 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 135.8 MB). Free memory was 949.2 MB in the beginning and 1.1 GB in the end (delta: -129.1 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. [2018-09-21 18:09:38,484 INFO L168 Benchmark]: CDTParser took 0.24 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 18:09:38,486 INFO L168 Benchmark]: CACSL2BoogieTranslator took 435.29 ms. Allocated memory is still 1.0 GB. Free memory was 949.2 MB in the beginning and 938.4 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-09-21 18:09:38,487 INFO L168 Benchmark]: Boogie Preprocessor took 56.21 ms. Allocated memory is still 1.0 GB. Free memory is still 938.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-09-21 18:09:38,489 INFO L168 Benchmark]: RCFGBuilder took 718.01 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 135.8 MB). Free memory was 938.4 MB in the beginning and 1.1 GB in the end (delta: -167.2 MB). Peak memory consumption was 27.2 MB. Max. memory is 11.5 GB. [2018-09-21 18:09:38,492 INFO L168 Benchmark]: TraceAbstraction took 583.33 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: 27.3 MB). Peak memory consumption was 27.3 MB. Max. memory is 11.5 GB. [2018-09-21 18:09:38,493 INFO L168 Benchmark]: Witness Printer took 6.76 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 18:09:38,499 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 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 435.29 ms. Allocated memory is still 1.0 GB. Free memory was 949.2 MB in the beginning and 938.4 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 56.21 ms. Allocated memory is still 1.0 GB. Free memory is still 938.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 718.01 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 135.8 MB). Free memory was 938.4 MB in the beginning and 1.1 GB in the end (delta: -167.2 MB). Peak memory consumption was 27.2 MB. Max. memory is 11.5 GB. * TraceAbstraction took 583.33 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: 27.3 MB). Peak memory consumption was 27.3 MB. Max. memory is 11.5 GB. * Witness Printer took 6.76 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: 52]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 51, overapproximation of bitwiseAnd at line 35. Possible FailurePath: [L47] double x = 0.0; VAL [x=0] [L48] CALL, EXPR fabs_double(x) VAL [\old(x)=0] [L26] __uint32_t high; VAL [\old(x)=0, x=0] [L28] FCALL ieee_double_shape_type gh_u; VAL [\old(x)=0, gh_u={9:0}, x=0] [L29] FCALL gh_u.value = (x) VAL [\old(x)=0, gh_u={9:0}, x=0] [L30] EXPR, FCALL gh_u.parts.msw VAL [\old(x)=0, gh_u={9:0}, gh_u.parts.msw=15, x=0] [L30] (high) = gh_u.parts.msw VAL [\old(x)=0, gh_u={9:0}, gh_u.parts.msw=15, high=15, x=0] [L30] FCALL (high) = gh_u.parts.msw VAL [(high) = gh_u.parts.msw=11, \old(x)=0, gh_u={9:0}, gh_u.parts.msw=15, high=15, x=0] [L31] COND FALSE !(0) VAL [\old(x)=0, high=15, x=0] [L33] FCALL ieee_double_shape_type sh_u; VAL [\old(x)=0, high=15, sh_u={9:0}, x=0] [L34] FCALL sh_u.value = (x) VAL [\old(x)=0, high=15, sh_u={9:0}, x=0] [L35] FCALL sh_u.parts.msw = (high & 0x7fffffff) VAL [\old(x)=0, high=15, sh_u={9:0}, x=0] [L36] EXPR, FCALL sh_u.value VAL [\old(x)=0, high=15, sh_u={9:0}, sh_u.value=0, x=0] [L36] (x) = sh_u.value VAL [\old(x)=0, high=15, sh_u={9:0}, sh_u.value=0, x=0] [L36] FCALL (x) = sh_u.value VAL [(x) = sh_u.value=13, \old(x)=0, high=15, sh_u={9:0}, sh_u.value=0, x=0] [L36] FCALL (x) = sh_u.value VAL [(x) = sh_u.value=13, (x) = sh_u.value=12, \old(x)=0, high=15, sh_u={9:0}, sh_u.value=0, x=0] [L37] COND FALSE !(0) VAL [\old(x)=0, high=15, x=0] [L38] RET return x; VAL [\old(x)=0, \result=0, high=15, x=0] [L48] EXPR fabs_double(x) VAL [fabs_double(x)=0, x=0] [L48] double res = fabs_double(x); [L51] EXPR res == 0.0 && __signbit_double(res) == 0 VAL [res=0, res == 0.0 && __signbit_double(res) == 0=0, x=0] [L51] COND FALSE, EXPR !(res == 0.0 && __signbit_double(res) == 0) VAL [res=0, res == 0.0 && __signbit_double(res) == 0=0, x=0] [L51] COND TRUE !(res == 0.0 && __signbit_double(res) == 0) [L52] __VERIFIER_error() VAL [res=0, x=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 58 locations, 1 error locations. UNSAFE Result, 0.5s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 58 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=58occurred 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, 54 NumberOfCodeBlocks, 54 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 16 ConstructedInterpolants, 0 QuantifiedInterpolants, 256 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.23-5eb3fea [2018-09-21 18:09:41,111 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-21 18:09:41,113 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-21 18:09:41,128 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-21 18:09:41,129 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-21 18:09:41,133 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-21 18:09:41,135 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-21 18:09:41,138 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-21 18:09:41,142 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-21 18:09:41,145 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-21 18:09:41,148 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-21 18:09:41,149 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-21 18:09:41,150 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-21 18:09:41,153 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-21 18:09:41,161 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-21 18:09:41,163 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-21 18:09:41,165 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-21 18:09:41,172 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-21 18:09:41,178 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-21 18:09:41,183 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-21 18:09:41,184 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-21 18:09:41,187 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-21 18:09:41,191 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-21 18:09:41,194 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-21 18:09:41,195 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-21 18:09:41,196 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-21 18:09:41,197 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-21 18:09:41,198 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-21 18:09:41,200 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-21 18:09:41,204 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-21 18:09:41,205 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-21 18:09:41,206 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-21 18:09:41,207 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-21 18:09:41,207 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-21 18:09:41,210 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-21 18:09:41,212 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-21 18:09:41,214 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2018-09-21 18:09:41,245 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-21 18:09:41,247 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-21 18:09:41,248 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-21 18:09:41,249 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-09-21 18:09:41,250 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-09-21 18:09:41,251 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-09-21 18:09:41,251 INFO L133 SettingsManager]: * Use SBE=true [2018-09-21 18:09:41,252 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-21 18:09:41,252 INFO L133 SettingsManager]: * sizeof long=4 [2018-09-21 18:09:41,252 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-09-21 18:09:41,253 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-21 18:09:41,253 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-21 18:09:41,253 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-21 18:09:41,253 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-21 18:09:41,254 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-09-21 18:09:41,255 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-09-21 18:09:41,255 INFO L133 SettingsManager]: * sizeof long double=12 [2018-09-21 18:09:41,255 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-21 18:09:41,255 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-21 18:09:41,257 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-21 18:09:41,258 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-21 18:09:41,258 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-21 18:09:41,258 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-21 18:09:41,258 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-21 18:09:41,260 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-21 18:09:41,260 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-21 18:09:41,261 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-21 18:09:41,261 INFO L133 SettingsManager]: * Trace refinement strategy=WOLF [2018-09-21 18:09:41,261 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-21 18:09:41,261 INFO L133 SettingsManager]: * Command for external solver=cvc4nyu --tear-down-incremental --rewrite-divk --print-success --lang smt [2018-09-21 18:09:41,262 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-09-21 18:09:41,262 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 -> 84d0ee37d85bbc2c0fd59ce938796111cbf21a8f 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 18:09:41,342 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-21 18:09:41,359 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-21 18:09:41,365 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-21 18:09:41,367 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-21 18:09:41,368 INFO L276 PluginConnector]: CDTParser initialized [2018-09-21 18:09:41,368 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1011a_true-unreach-call.c [2018-09-21 18:09:41,721 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/143b8ff93/7cc4daf71d0143d1958400ac42f31501/FLAG11e74f81e [2018-09-21 18:09:41,907 INFO L277 CDTParser]: Found 1 translation units. [2018-09-21 18:09:41,908 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1011a_true-unreach-call.c [2018-09-21 18:09:41,915 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/143b8ff93/7cc4daf71d0143d1958400ac42f31501/FLAG11e74f81e [2018-09-21 18:09:41,930 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/143b8ff93/7cc4daf71d0143d1958400ac42f31501 [2018-09-21 18:09:41,934 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-21 18:09:41,938 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-21 18:09:41,939 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-21 18:09:41,939 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-21 18:09:41,947 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-21 18:09:41,948 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 06:09:41" (1/1) ... [2018-09-21 18:09:41,951 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e2512ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:09:41, skipping insertion in model container [2018-09-21 18:09:41,951 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 06:09:41" (1/1) ... [2018-09-21 18:09:41,965 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-21 18:09:42,187 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-21 18:09:42,212 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-21 18:09:42,232 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-21 18:09:42,284 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:09:42 WrapperNode [2018-09-21 18:09:42,285 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-21 18:09:42,286 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-21 18:09:42,286 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-21 18:09:42,286 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-21 18:09:42,301 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:09:42" (1/1) ... [2018-09-21 18:09:42,302 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:09:42" (1/1) ... [2018-09-21 18:09:42,316 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:09:42" (1/1) ... [2018-09-21 18:09:42,316 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:09:42" (1/1) ... [2018-09-21 18:09:42,325 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:09:42" (1/1) ... [2018-09-21 18:09:42,331 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:09:42" (1/1) ... [2018-09-21 18:09:42,333 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:09:42" (1/1) ... [2018-09-21 18:09:42,337 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-21 18:09:42,338 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-21 18:09:42,338 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-21 18:09:42,338 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-21 18:09:42,340 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:09:42" (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 18:09:42,499 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-21 18:09:42,499 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-21 18:09:42,499 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_double [2018-09-21 18:09:42,500 INFO L138 BoogieDeclarations]: Found implementation of procedure fabs_double [2018-09-21 18:09:42,500 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-21 18:09:42,500 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-09-21 18:09:42,500 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_double [2018-09-21 18:09:42,500 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-09-21 18:09:42,500 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2018-09-21 18:09:42,500 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2018-09-21 18:09:42,501 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-09-21 18:09:42,501 INFO L130 BoogieDeclarations]: Found specification of procedure fabs_double [2018-09-21 18:09:42,501 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2018-09-21 18:09:42,501 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2018-09-21 18:09:42,501 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-21 18:09:42,501 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-21 18:09:42,501 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-21 18:09:42,502 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2018-09-21 18:09:42,502 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intFLOATTYPE8 [2018-09-21 18:09:42,683 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-21 18:09:42,731 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-21 18:09:42,953 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-21 18:09:43,054 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-21 18:09:43,070 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-21 18:09:43,094 INFO L373 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-21 18:09:43,095 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 06:09:43 BoogieIcfgContainer [2018-09-21 18:09:43,095 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-21 18:09:43,096 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-21 18:09:43,096 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-21 18:09:43,100 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-21 18:09:43,100 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 06:09:41" (1/3) ... [2018-09-21 18:09:43,101 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49ad9795 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 06:09:43, skipping insertion in model container [2018-09-21 18:09:43,101 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:09:42" (2/3) ... [2018-09-21 18:09:43,102 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49ad9795 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 06:09:43, skipping insertion in model container [2018-09-21 18:09:43,102 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 06:09:43" (3/3) ... [2018-09-21 18:09:43,107 INFO L112 eAbstractionObserver]: Analyzing ICFG double_req_bl_1011a_true-unreach-call.c [2018-09-21 18:09:43,117 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-21 18:09:43,124 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-21 18:09:43,171 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-21 18:09:43,172 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-21 18:09:43,172 INFO L382 AbstractCegarLoop]: Hoare is false [2018-09-21 18:09:43,174 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-21 18:09:43,174 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-21 18:09:43,174 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-21 18:09:43,174 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-21 18:09:43,175 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-21 18:09:43,175 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-21 18:09:43,195 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states. [2018-09-21 18:09:43,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-09-21 18:09:43,209 INFO L368 BasicCegarLoop]: Found error trace [2018-09-21 18:09:43,210 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-21 18:09:43,213 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-21 18:09:43,219 INFO L82 PathProgramCache]: Analyzing trace with hash 288554348, now seen corresponding path program 1 times [2018-09-21 18:09:43,225 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-21 18:09:43,226 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 18:09:43,238 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-21 18:09:43,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-21 18:09:43,300 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-21 18:09:43,323 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 18:09:43,324 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-21 18:09:43,342 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-21 18:09:43,342 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-09-21 18:09:43,347 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-09-21 18:09:43,361 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-09-21 18:09:43,362 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-09-21 18:09:43,367 INFO L87 Difference]: Start difference. First operand 58 states. Second operand 2 states. [2018-09-21 18:09:43,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-21 18:09:43,390 INFO L93 Difference]: Finished difference Result 58 states and 58 transitions. [2018-09-21 18:09:43,390 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-09-21 18:09:43,391 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 17 [2018-09-21 18:09:43,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-21 18:09:43,404 INFO L225 Difference]: With dead ends: 58 [2018-09-21 18:09:43,405 INFO L226 Difference]: Without dead ends: 54 [2018-09-21 18:09:43,407 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-09-21 18:09:43,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2018-09-21 18:09:43,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2018-09-21 18:09:43,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2018-09-21 18:09:43,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 54 transitions. [2018-09-21 18:09:43,453 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 54 transitions. Word has length 17 [2018-09-21 18:09:43,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-21 18:09:43,454 INFO L480 AbstractCegarLoop]: Abstraction has 54 states and 54 transitions. [2018-09-21 18:09:43,454 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-09-21 18:09:43,454 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 54 transitions. [2018-09-21 18:09:43,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2018-09-21 18:09:43,456 INFO L368 BasicCegarLoop]: Found error trace [2018-09-21 18:09:43,457 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] [2018-09-21 18:09:43,457 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-21 18:09:43,457 INFO L82 PathProgramCache]: Analyzing trace with hash -1982009839, now seen corresponding path program 1 times [2018-09-21 18:09:43,459 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-21 18:09:43,459 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 18:09:43,470 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-21 18:09:43,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-21 18:09:43,585 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-21 18:09:43,743 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 14 treesize of output 11 [2018-09-21 18:09:43,760 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 11 treesize of output 10 [2018-09-21 18:09:43,761 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-21 18:09:43,877 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-21 18:09:43,980 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-09-21 18:09:43,980 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:27, output treesize:23 [2018-09-21 18:09:44,134 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 20 treesize of output 16 [2018-09-21 18:09:44,165 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 16 treesize of output 4 [2018-09-21 18:09:44,166 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-21 18:09:44,183 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-21 18:09:44,284 INFO L267 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-09-21 18:09:44,284 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:32, output treesize:17 [2018-09-21 18:09:44,476 WARN L178 SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-09-21 18:09:44,633 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 12 treesize of output 9 [2018-09-21 18:09:44,650 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 9 treesize of output 8 [2018-09-21 18:09:44,650 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-21 18:09:44,678 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-21 18:09:44,813 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2018-09-21 18:09:44,814 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:35, output treesize:31 [2018-09-21 18:09:45,012 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 25 treesize of output 20 [2018-09-21 18:09:45,036 INFO L700 Elim1Store]: detected not equals via solver [2018-09-21 18:09:45,042 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 27 [2018-09-21 18:09:45,044 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-21 18:09:45,095 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-21 18:09:45,168 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2018-09-21 18:09:45,168 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:43, output treesize:39 [2018-09-21 18:09:45,278 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 66 treesize of output 50 [2018-09-21 18:09:45,334 INFO L700 Elim1Store]: detected not equals via solver [2018-09-21 18:09:45,364 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 34 [2018-09-21 18:09:45,365 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-21 18:09:45,416 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-21 18:09:45,453 INFO L267 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2018-09-21 18:09:45,453 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 5 variables, input treesize:84, output treesize:46 [2018-09-21 18:09:46,116 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 18:09:46,117 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-21 18:09:46,134 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-21 18:09:46,134 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2018-09-21 18:09:46,136 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-09-21 18:09:46,138 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-09-21 18:09:46,138 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2018-09-21 18:09:46,139 INFO L87 Difference]: Start difference. First operand 54 states and 54 transitions. Second operand 14 states. [2018-09-21 18:09:46,696 WARN L178 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 25 [2018-09-21 18:09:47,881 WARN L178 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 38 [2018-09-21 18:09:48,298 WARN L178 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 47 [2018-09-21 18:09:48,838 WARN L178 SmtUtils]: Spent 313.00 ms on a formula simplification that was a NOOP. DAG size: 49 [2018-09-21 18:09:50,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-21 18:09:50,041 INFO L93 Difference]: Finished difference Result 54 states and 53 transitions. [2018-09-21 18:09:50,042 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-09-21 18:09:50,042 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 37 [2018-09-21 18:09:50,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-21 18:09:50,045 INFO L225 Difference]: With dead ends: 54 [2018-09-21 18:09:50,045 INFO L226 Difference]: Without dead ends: 54 [2018-09-21 18:09:50,048 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=90, Invalid=510, Unknown=0, NotChecked=0, Total=600 [2018-09-21 18:09:50,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2018-09-21 18:09:50,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2018-09-21 18:09:50,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2018-09-21 18:09:50,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 53 transitions. [2018-09-21 18:09:50,056 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 53 transitions. Word has length 37 [2018-09-21 18:09:50,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-21 18:09:50,057 INFO L480 AbstractCegarLoop]: Abstraction has 54 states and 53 transitions. [2018-09-21 18:09:50,058 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-09-21 18:09:50,058 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 53 transitions. [2018-09-21 18:09:50,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2018-09-21 18:09:50,060 INFO L368 BasicCegarLoop]: Found error trace [2018-09-21 18:09:50,060 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-21 18:09:50,060 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-21 18:09:50,061 INFO L82 PathProgramCache]: Analyzing trace with hash -1033820330, now seen corresponding path program 1 times [2018-09-21 18:09:50,063 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-21 18:09:50,063 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 18:09:50,081 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 18:09:50,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-21 18:09:50,190 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-21 18:09:50,230 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 14 treesize of output 11 [2018-09-21 18:09:50,244 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 11 treesize of output 10 [2018-09-21 18:09:50,245 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-21 18:09:50,251 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-21 18:09:50,270 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-09-21 18:09:50,271 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:24, output treesize:20 [2018-09-21 18:09:50,334 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 20 treesize of output 16 [2018-09-21 18:09:50,340 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 16 treesize of output 4 [2018-09-21 18:09:50,341 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-21 18:09:50,347 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-21 18:09:50,358 INFO L267 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-09-21 18:09:50,359 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:29, output treesize:14 [2018-09-21 18:09:50,476 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 16 treesize of output 13 [2018-09-21 18:09:50,483 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 13 treesize of output 12 [2018-09-21 18:09:50,483 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-21 18:09:50,490 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-21 18:09:50,508 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-09-21 18:09:50,509 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:26, output treesize:22 [2018-09-21 18:09:50,607 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 58 treesize of output 44 [2018-09-21 18:09:50,619 INFO L700 Elim1Store]: detected not equals via solver [2018-09-21 18:09:50,625 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 31 [2018-09-21 18:09:50,627 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-09-21 18:09:50,649 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-09-21 18:09:50,665 INFO L267 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2018-09-21 18:09:50,666 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:67, output treesize:34 [2018-09-21 18:09:51,417 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 14 treesize of output 11 [2018-09-21 18:09:51,423 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 11 treesize of output 10 [2018-09-21 18:09:51,423 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-21 18:09:51,428 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-21 18:09:51,442 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-09-21 18:09:51,443 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:24, output treesize:20 [2018-09-21 18:09:51,591 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 20 treesize of output 16 [2018-09-21 18:09:51,596 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 16 treesize of output 4 [2018-09-21 18:09:51,597 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-21 18:09:51,601 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-21 18:09:51,613 INFO L267 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-09-21 18:09:51,613 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:29, output treesize:14 [2018-09-21 18:09:52,289 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 18:09:52,290 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-21 18:09:52,301 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-21 18:09:52,301 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2018-09-21 18:09:52,302 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-09-21 18:09:52,302 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-09-21 18:09:52,303 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=343, Unknown=0, NotChecked=0, Total=380 [2018-09-21 18:09:52,303 INFO L87 Difference]: Start difference. First operand 54 states and 53 transitions. Second operand 20 states. [2018-09-21 18:09:57,143 WARN L178 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 39 [2018-09-21 18:10:00,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-21 18:10:00,624 INFO L93 Difference]: Finished difference Result 52 states and 51 transitions. [2018-09-21 18:10:00,626 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2018-09-21 18:10:00,626 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 53 [2018-09-21 18:10:00,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-21 18:10:00,627 INFO L225 Difference]: With dead ends: 52 [2018-09-21 18:10:00,628 INFO L226 Difference]: Without dead ends: 0 [2018-09-21 18:10:00,631 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 194 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=165, Invalid=1475, Unknown=0, NotChecked=0, Total=1640 [2018-09-21 18:10:00,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-09-21 18:10:00,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-09-21 18:10:00,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-09-21 18:10:00,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-09-21 18:10:00,632 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 53 [2018-09-21 18:10:00,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-21 18:10:00,632 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-09-21 18:10:00,632 INFO L481 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-09-21 18:10:00,632 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-09-21 18:10:00,632 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-09-21 18:10:00,637 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.09 06:10:00 BoogieIcfgContainer [2018-09-21 18:10:00,637 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-21 18:10:00,638 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-09-21 18:10:00,638 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-09-21 18:10:00,638 INFO L276 PluginConnector]: Witness Printer initialized [2018-09-21 18:10:00,639 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 06:09:43" (3/4) ... [2018-09-21 18:10:00,644 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-09-21 18:10:00,651 INFO L316 RCFGBacktranslator]: Ignoring RootEdge to procedure fabs_double [2018-09-21 18:10:00,651 INFO L316 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-09-21 18:10:00,651 INFO L316 RCFGBacktranslator]: Ignoring RootEdge to procedure __signbit_double [2018-09-21 18:10:00,651 INFO L316 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-09-21 18:10:00,657 INFO L850 BoogieBacktranslator]: Reduced CFG by removing 16 nodes and edges [2018-09-21 18:10:00,657 INFO L850 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2018-09-21 18:10:00,657 INFO L850 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-09-21 18:10:00,746 INFO L145 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2018-09-21 18:10:00,750 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-09-21 18:10:00,752 INFO L168 Benchmark]: Toolchain (without parser) took 18816.45 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 215.0 MB). Free memory was 953.2 MB in the beginning and 1.1 GB in the end (delta: -163.5 MB). Peak memory consumption was 51.5 MB. Max. memory is 11.5 GB. [2018-09-21 18:10:00,757 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-09-21 18:10:00,759 INFO L168 Benchmark]: CACSL2BoogieTranslator took 346.67 ms. Allocated memory is still 1.0 GB. Free memory was 953.2 MB in the beginning and 942.3 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.9 MB. Max. memory is 11.5 GB. [2018-09-21 18:10:00,760 INFO L168 Benchmark]: Boogie Preprocessor took 51.39 ms. Allocated memory is still 1.0 GB. Free memory is still 942.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-09-21 18:10:00,760 INFO L168 Benchmark]: RCFGBuilder took 757.18 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 155.7 MB). Free memory was 942.3 MB in the beginning and 1.1 GB in the end (delta: -181.2 MB). Peak memory consumption was 27.4 MB. Max. memory is 11.5 GB. [2018-09-21 18:10:00,761 INFO L168 Benchmark]: TraceAbstraction took 17541.39 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 59.2 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: -1.0 MB). Peak memory consumption was 58.2 MB. Max. memory is 11.5 GB. [2018-09-21 18:10:00,761 INFO L168 Benchmark]: Witness Printer took 112.46 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: 7.8 MB). Peak memory consumption was 7.8 MB. Max. memory is 11.5 GB. [2018-09-21 18:10:00,773 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 346.67 ms. Allocated memory is still 1.0 GB. Free memory was 953.2 MB in the beginning and 942.3 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.9 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 51.39 ms. Allocated memory is still 1.0 GB. Free memory is still 942.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 757.18 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 155.7 MB). Free memory was 942.3 MB in the beginning and 1.1 GB in the end (delta: -181.2 MB). Peak memory consumption was 27.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 17541.39 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 59.2 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: -1.0 MB). Peak memory consumption was 58.2 MB. Max. memory is 11.5 GB. * Witness Printer took 112.46 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: 7.8 MB). Peak memory consumption was 7.8 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 52]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 58 locations, 1 error locations. SAFE Result, 17.4s OverallTime, 3 OverallIterations, 1 TraceHistogramMax, 12.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 126 SDtfs, 69 SDslu, 815 SDs, 0 SdLazy, 555 SolverSat, 34 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 6.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 136 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 281 ImplicationChecksByTransitivity, 8.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=58occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 4.6s InterpolantComputationTime, 107 NumberOfCodeBlocks, 107 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 104 ConstructedInterpolants, 58 QuantifiedInterpolants, 76288 SizeOfPredicates, 33 NumberOfNonLiveVariables, 218 ConjunctsInSsa, 41 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 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...