/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/Ultimate.py --spec ../../../trunk/examples/svcomp/ReachSafety.prp --file ../../../trunk/examples/svcomp/float-newlib/double_req_bl_1232a_true-unreach-call.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 40ef5092 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_1232a_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 003153f3ad6cbb58054db9843ced215cd3b72896 .......................................................................................................................................................................................................................................................................................................................................................................................... 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_1232a_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 003153f3ad6cbb58054db9843ced215cd3b72896 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-40ef509 [2018-09-20 15:06:07,889 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-20 15:06:07,892 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-20 15:06:07,910 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-20 15:06:07,910 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-20 15:06:07,913 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-20 15:06:07,914 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-20 15:06:07,916 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-20 15:06:07,918 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-20 15:06:07,919 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-20 15:06:07,920 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-20 15:06:07,920 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-20 15:06:07,921 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-20 15:06:07,922 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-20 15:06:07,924 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-20 15:06:07,925 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-20 15:06:07,926 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-20 15:06:07,928 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-20 15:06:07,934 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-20 15:06:07,938 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-20 15:06:07,939 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-20 15:06:07,943 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-20 15:06:07,949 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-20 15:06:07,951 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-20 15:06:07,952 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-20 15:06:07,953 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-20 15:06:07,957 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-20 15:06:07,958 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-20 15:06:07,959 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-20 15:06:07,962 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-20 15:06:07,964 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-20 15:06:07,965 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-20 15:06:07,966 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-20 15:06:07,966 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-20 15:06:07,969 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-20 15:06:07,970 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-20 15:06:07,970 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-09-20 15:06:07,998 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-20 15:06:07,999 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-20 15:06:08,000 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-20 15:06:08,001 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-09-20 15:06:08,002 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-09-20 15:06:08,003 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-09-20 15:06:08,003 INFO L133 SettingsManager]: * Use SBE=true [2018-09-20 15:06:08,004 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-20 15:06:08,004 INFO L133 SettingsManager]: * sizeof long=4 [2018-09-20 15:06:08,004 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-20 15:06:08,004 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-09-20 15:06:08,005 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-20 15:06:08,005 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-20 15:06:08,005 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-20 15:06:08,005 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-20 15:06:08,006 INFO L133 SettingsManager]: * sizeof long double=12 [2018-09-20 15:06:08,006 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-20 15:06:08,006 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-20 15:06:08,007 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-20 15:06:08,007 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-20 15:06:08,007 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-20 15:06:08,007 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-20 15:06:08,007 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-20 15:06:08,010 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-20 15:06:08,010 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-20 15:06:08,010 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-20 15:06:08,010 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-09-20 15:06:08,010 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-20 15:06:08,011 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-20 15:06:08,011 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 -> 003153f3ad6cbb58054db9843ced215cd3b72896 [2018-09-20 15:06:08,072 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-20 15:06:08,085 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-20 15:06:08,089 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-20 15:06:08,091 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-20 15:06:08,092 INFO L276 PluginConnector]: CDTParser initialized [2018-09-20 15:06:08,093 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1232a_true-unreach-call.c [2018-09-20 15:06:08,445 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/736b40df6/aa16b1da94764c7784be01b4af1dd27a/FLAG83fe9a33c [2018-09-20 15:06:08,677 INFO L277 CDTParser]: Found 1 translation units. [2018-09-20 15:06:08,678 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1232a_true-unreach-call.c [2018-09-20 15:06:08,687 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/736b40df6/aa16b1da94764c7784be01b4af1dd27a/FLAG83fe9a33c [2018-09-20 15:06:08,704 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/736b40df6/aa16b1da94764c7784be01b4af1dd27a [2018-09-20 15:06:08,709 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-20 15:06:08,713 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-20 15:06:08,714 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-20 15:06:08,714 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-20 15:06:08,722 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-20 15:06:08,723 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 03:06:08" (1/1) ... [2018-09-20 15:06:08,727 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@28bf9404 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 03:06:08, skipping insertion in model container [2018-09-20 15:06:08,727 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 03:06:08" (1/1) ... [2018-09-20 15:06:08,740 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-20 15:06:08,974 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-20 15:06:08,992 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-20 15:06:09,010 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-20 15:06:09,040 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 03:06:09 WrapperNode [2018-09-20 15:06:09,040 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-20 15:06:09,041 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-20 15:06:09,041 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-20 15:06:09,041 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-20 15:06:09,059 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 03:06:09" (1/1) ... [2018-09-20 15:06:09,059 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 03:06:09" (1/1) ... [2018-09-20 15:06:09,073 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 03:06:09" (1/1) ... [2018-09-20 15:06:09,074 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 03:06:09" (1/1) ... [2018-09-20 15:06:09,082 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 03:06:09" (1/1) ... [2018-09-20 15:06:09,089 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 03:06:09" (1/1) ... [2018-09-20 15:06:09,091 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 03:06:09" (1/1) ... [2018-09-20 15:06:09,094 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-20 15:06:09,095 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-20 15:06:09,095 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-20 15:06:09,095 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-20 15:06:09,096 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 03:06:09" (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 [2018-09-20 15:06:09,168 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-20 15:06:09,168 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-20 15:06:09,168 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2018-09-20 15:06:09,168 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_double [2018-09-20 15:06:09,169 INFO L138 BoogieDeclarations]: Found implementation of procedure fmin_double [2018-09-20 15:06:09,169 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_double [2018-09-20 15:06:09,169 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-20 15:06:09,169 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-09-20 15:06:09,169 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2018-09-20 15:06:09,169 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2018-09-20 15:06:09,170 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_double [2018-09-20 15:06:09,170 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-09-20 15:06:09,170 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2018-09-20 15:06:09,170 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-09-20 15:06:09,170 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-09-20 15:06:09,170 INFO L130 BoogieDeclarations]: Found specification of procedure fmin_double [2018-09-20 15:06:09,170 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_double [2018-09-20 15:06:09,170 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-20 15:06:09,171 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-20 15:06:09,171 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-20 15:06:09,171 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~real [2018-09-20 15:06:09,171 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2018-09-20 15:06:09,171 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2018-09-20 15:06:09,171 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-09-20 15:06:09,808 INFO L365 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-20 15:06:09,809 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 03:06:09 BoogieIcfgContainer [2018-09-20 15:06:09,809 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-20 15:06:09,810 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-20 15:06:09,810 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-20 15:06:09,814 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-20 15:06:09,814 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.09 03:06:08" (1/3) ... [2018-09-20 15:06:09,815 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76326db7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 03:06:09, skipping insertion in model container [2018-09-20 15:06:09,816 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 03:06:09" (2/3) ... [2018-09-20 15:06:09,816 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76326db7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 03:06:09, skipping insertion in model container [2018-09-20 15:06:09,817 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 03:06:09" (3/3) ... [2018-09-20 15:06:09,820 INFO L112 eAbstractionObserver]: Analyzing ICFG double_req_bl_1232a_true-unreach-call.c [2018-09-20 15:06:09,831 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-20 15:06:09,841 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-20 15:06:09,890 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-20 15:06:09,891 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-20 15:06:09,891 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-20 15:06:09,891 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-20 15:06:09,891 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-20 15:06:09,891 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-20 15:06:09,892 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-20 15:06:09,892 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-20 15:06:09,892 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-20 15:06:09,913 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states. [2018-09-20 15:06:09,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-09-20 15:06:09,922 INFO L368 BasicCegarLoop]: Found error trace [2018-09-20 15:06:09,924 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-20 15:06:09,927 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-20 15:06:09,932 INFO L82 PathProgramCache]: Analyzing trace with hash 1095093143, now seen corresponding path program 1 times [2018-09-20 15:06:09,935 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-20 15:06:09,936 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-20 15:06:09,993 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-20 15:06:09,994 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-20 15:06:09,994 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-20 15:06:10,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-20 15:06:10,090 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-20 15:06:10,093 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-20 15:06:10,094 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-09-20 15:06:10,098 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-09-20 15:06:10,111 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-09-20 15:06:10,112 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-09-20 15:06:10,115 INFO L87 Difference]: Start difference. First operand 64 states. Second operand 2 states. [2018-09-20 15:06:10,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-20 15:06:10,146 INFO L93 Difference]: Finished difference Result 119 states and 147 transitions. [2018-09-20 15:06:10,146 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-09-20 15:06:10,148 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 22 [2018-09-20 15:06:10,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-20 15:06:10,160 INFO L225 Difference]: With dead ends: 119 [2018-09-20 15:06:10,160 INFO L226 Difference]: Without dead ends: 60 [2018-09-20 15:06:10,165 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 [2018-09-20 15:06:10,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2018-09-20 15:06:10,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2018-09-20 15:06:10,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2018-09-20 15:06:10,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 68 transitions. [2018-09-20 15:06:10,217 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 68 transitions. Word has length 22 [2018-09-20 15:06:10,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-20 15:06:10,218 INFO L480 AbstractCegarLoop]: Abstraction has 60 states and 68 transitions. [2018-09-20 15:06:10,218 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-09-20 15:06:10,218 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 68 transitions. [2018-09-20 15:06:10,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2018-09-20 15:06:10,222 INFO L368 BasicCegarLoop]: Found error trace [2018-09-20 15:06:10,222 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] [2018-09-20 15:06:10,222 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-20 15:06:10,223 INFO L82 PathProgramCache]: Analyzing trace with hash 1483022669, now seen corresponding path program 1 times [2018-09-20 15:06:10,223 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-20 15:06:10,223 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-20 15:06:10,224 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-20 15:06:10,225 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-20 15:06:10,226 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-20 15:06:10,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-20 15:06:10,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-20 15:06:10,477 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-20 15:06:10,477 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-20 15:06:10,479 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-20 15:06:10,479 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-20 15:06:10,481 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-20 15:06:10,481 INFO L87 Difference]: Start difference. First operand 60 states and 68 transitions. Second operand 4 states. [2018-09-20 15:06:10,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-20 15:06:10,645 INFO L93 Difference]: Finished difference Result 87 states and 97 transitions. [2018-09-20 15:06:10,646 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-20 15:06:10,647 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 35 [2018-09-20 15:06:10,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-20 15:06:10,651 INFO L225 Difference]: With dead ends: 87 [2018-09-20 15:06:10,652 INFO L226 Difference]: Without dead ends: 64 [2018-09-20 15:06:10,654 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-20 15:06:10,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2018-09-20 15:06:10,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2018-09-20 15:06:10,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2018-09-20 15:06:10,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 73 transitions. [2018-09-20 15:06:10,667 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 73 transitions. Word has length 35 [2018-09-20 15:06:10,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-20 15:06:10,668 INFO L480 AbstractCegarLoop]: Abstraction has 64 states and 73 transitions. [2018-09-20 15:06:10,668 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-20 15:06:10,668 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 73 transitions. [2018-09-20 15:06:10,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-09-20 15:06:10,670 INFO L368 BasicCegarLoop]: Found error trace [2018-09-20 15:06:10,671 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] [2018-09-20 15:06:10,671 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-20 15:06:10,672 INFO L82 PathProgramCache]: Analyzing trace with hash 184182308, now seen corresponding path program 1 times [2018-09-20 15:06:10,672 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-20 15:06:10,672 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-20 15:06:10,674 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-20 15:06:10,674 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-20 15:06:10,674 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-20 15:06:10,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-20 15:06:10,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-20 15:06:10,832 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-20 15:06:10,832 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-20 15:06:10,833 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-20 15:06:10,833 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-20 15:06:10,833 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-20 15:06:10,838 INFO L87 Difference]: Start difference. First operand 64 states and 73 transitions. Second operand 4 states. [2018-09-20 15:06:11,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-20 15:06:11,000 INFO L93 Difference]: Finished difference Result 91 states and 102 transitions. [2018-09-20 15:06:11,002 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-20 15:06:11,002 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 38 [2018-09-20 15:06:11,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-20 15:06:11,004 INFO L225 Difference]: With dead ends: 91 [2018-09-20 15:06:11,004 INFO L226 Difference]: Without dead ends: 68 [2018-09-20 15:06:11,006 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-20 15:06:11,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2018-09-20 15:06:11,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 64. [2018-09-20 15:06:11,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2018-09-20 15:06:11,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 73 transitions. [2018-09-20 15:06:11,019 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 73 transitions. Word has length 38 [2018-09-20 15:06:11,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-20 15:06:11,019 INFO L480 AbstractCegarLoop]: Abstraction has 64 states and 73 transitions. [2018-09-20 15:06:11,019 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-20 15:06:11,020 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 73 transitions. [2018-09-20 15:06:11,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-09-20 15:06:11,022 INFO L368 BasicCegarLoop]: Found error trace [2018-09-20 15:06:11,022 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] [2018-09-20 15:06:11,022 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-20 15:06:11,023 INFO L82 PathProgramCache]: Analyzing trace with hash -1612769051, now seen corresponding path program 1 times [2018-09-20 15:06:11,023 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-20 15:06:11,023 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-20 15:06:11,024 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-20 15:06:11,025 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-20 15:06:11,025 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-20 15:06:11,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-09-20 15:06:11,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-09-20 15:06:11,103 INFO L443 BasicCegarLoop]: Counterexample might be feasible [2018-09-20 15:06:11,150 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.09 03:06:11 BoogieIcfgContainer [2018-09-20 15:06:11,151 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-20 15:06:11,151 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-09-20 15:06:11,151 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-09-20 15:06:11,152 INFO L276 PluginConnector]: Witness Printer initialized [2018-09-20 15:06:11,153 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 03:06:09" (3/4) ... [2018-09-20 15:06:11,157 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-09-20 15:06:11,157 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-09-20 15:06:11,158 INFO L168 Benchmark]: Toolchain (without parser) took 2448.26 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 151.0 MB). Free memory was 953.2 MB in the beginning and 1.1 GB in the end (delta: -118.3 MB). Peak memory consumption was 32.7 MB. Max. memory is 11.5 GB. [2018-09-20 15:06:11,160 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-09-20 15:06:11,160 INFO L168 Benchmark]: CACSL2BoogieTranslator took 326.37 ms. Allocated memory is still 1.0 GB. Free memory was 953.2 MB in the beginning and 942.5 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-09-20 15:06:11,161 INFO L168 Benchmark]: Boogie Preprocessor took 53.85 ms. Allocated memory is still 1.0 GB. Free memory is still 942.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-09-20 15:06:11,162 INFO L168 Benchmark]: RCFGBuilder took 714.45 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 151.0 MB). Free memory was 942.5 MB in the beginning and 1.1 GB in the end (delta: -176.6 MB). Peak memory consumption was 27.4 MB. Max. memory is 11.5 GB. [2018-09-20 15:06:11,163 INFO L168 Benchmark]: TraceAbstraction took 1340.67 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: 47.6 MB). Peak memory consumption was 47.6 MB. Max. memory is 11.5 GB. [2018-09-20 15:06:11,164 INFO L168 Benchmark]: Witness Printer took 5.99 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. [2018-09-20 15:06:11,168 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 326.37 ms. Allocated memory is still 1.0 GB. Free memory was 953.2 MB in the beginning and 942.5 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 53.85 ms. Allocated memory is still 1.0 GB. Free memory is still 942.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 714.45 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 151.0 MB). Free memory was 942.5 MB in the beginning and 1.1 GB in the end (delta: -176.6 MB). Peak memory consumption was 27.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1340.67 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: 47.6 MB). Peak memory consumption was 47.6 MB. Max. memory is 11.5 GB. * Witness Printer took 5.99 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: 80]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 79, overapproximation of someUnaryDOUBLEoperation at line 75. Possible FailurePath: [L74] double x = 0.0; [L75] double y = -0.0; VAL [x=0] [L76] CALL, EXPR fmin_double(x, y) VAL [\old(x)=0, \old(y)=4294967302] [L46] CALL, EXPR __fpclassify_double(x) VAL [\old(x)=0] [L19] __uint32_t msw, lsw; VAL [\old(x)=0, x=0] [L22] FCALL ieee_double_shape_type ew_u; VAL [\old(x)=0, ew_u={4294967300:0}, x=0] [L23] FCALL ew_u.value = (x) VAL [\old(x)=0, ew_u={4294967300:0}, x=0] [L24] EXPR, FCALL ew_u.parts.msw VAL [\old(x)=0, ew_u={4294967300:0}, ew_u.parts.msw=2146435073, x=0] [L24] (msw) = ew_u.parts.msw VAL [\old(x)=0, ew_u={4294967300:0}, ew_u.parts.msw=2146435073, msw=2146435073, x=0] [L24] FCALL (msw) = ew_u.parts.msw VAL [(msw) = ew_u.parts.msw=4294967298, \old(x)=0, ew_u={4294967300:0}, ew_u.parts.msw=2146435073, msw=2146435073, x=0] [L25] EXPR, FCALL ew_u.parts.lsw VAL [\old(x)=0, ew_u={4294967300:0}, ew_u.parts.lsw=4294967297, msw=2146435073, x=0] [L25] (lsw) = ew_u.parts.lsw VAL [\old(x)=0, ew_u={4294967300:0}, ew_u.parts.lsw=4294967297, lsw=4294967297, msw=2146435073, x=0] [L25] FCALL (lsw) = ew_u.parts.lsw VAL [(lsw) = ew_u.parts.lsw=4294967303, \old(x)=0, ew_u={4294967300:0}, ew_u.parts.lsw=4294967297, lsw=4294967297, msw=2146435073, x=0] [L26] COND FALSE !(0) VAL [\old(x)=0, lsw=4294967297, msw=2146435073, x=0] [L28-L29] COND FALSE !((msw == 0x00000000 && lsw == 0x00000000) || (msw == 0x80000000 && lsw == 0x00000000)) VAL [\old(x)=0, lsw=4294967297, msw=2146435073, x=0] [L31-L32] COND FALSE !((msw >= 0x00100000 && msw <= 0x7fefffff) || (msw >= 0x80100000 && msw <= 0xffefffff)) VAL [\old(x)=0, lsw=4294967297, msw=2146435073, x=0] [L34-L35] COND FALSE !((msw >= 0x00000000 && msw <= 0x000fffff) || (msw >= 0x80000000 && msw <= 0x800fffff)) VAL [\old(x)=0, lsw=4294967297, msw=2146435073, x=0] [L38-L39] COND FALSE !((msw == 0x7ff00000 && lsw == 0x00000000) || (msw == 0xfff00000 && lsw == 0x00000000)) [L42] RET return 0; VAL [\old(x)=0, \result=0, lsw=4294967297, msw=2146435073, x=0] [L46] EXPR __fpclassify_double(x) VAL [\old(x)=0, \old(y)=4294967302, __fpclassify_double(x)=0, x=0, y=4294967302] [L46] COND TRUE __fpclassify_double(x) == 0 [L47] RET return y; VAL [\old(x)=0, \old(y)=4294967302, \result=4294967302, x=0, y=4294967302] [L76] EXPR fmin_double(x, y) VAL [fmin_double(x, y)=4294967302, x=0, y=4294967302] [L76] double res = fmin_double(x, y); [L79] EXPR res == -0.0 && __signbit_double(res) == 1 VAL [res=4294967302, res == -0.0 && __signbit_double(res) == 1=0, x=0, y=4294967302] [L79] COND FALSE, EXPR !(res == -0.0 && __signbit_double(res) == 1) VAL [res=4294967302, res == -0.0 && __signbit_double(res) == 1=0, x=0, y=4294967302] [L79] COND TRUE !(res == -0.0 && __signbit_double(res) == 1) [L80] __VERIFIER_error() VAL [res=4294967302, x=0, y=4294967302] - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 67 locations, 1 error locations. UNSAFE Result, 1.2s OverallTime, 4 OverallIterations, 1 TraceHistogramMax, 0.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 209 SDtfs, 0 SDslu, 258 SDs, 0 SdLazy, 21 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=64occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 4 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 133 NumberOfCodeBlocks, 133 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 92 ConstructedInterpolants, 0 QuantifiedInterpolants, 3534 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 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 0.1.23-40ef509 [2018-09-20 15:06:13,487 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-20 15:06:13,489 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-20 15:06:13,502 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-20 15:06:13,503 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-20 15:06:13,504 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-20 15:06:13,505 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-20 15:06:13,507 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-20 15:06:13,509 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-20 15:06:13,510 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-20 15:06:13,511 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-20 15:06:13,512 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-20 15:06:13,513 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-20 15:06:13,514 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-20 15:06:13,515 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-20 15:06:13,516 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-20 15:06:13,517 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-20 15:06:13,519 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-20 15:06:13,522 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-20 15:06:13,524 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-20 15:06:13,525 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-20 15:06:13,526 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-20 15:06:13,529 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-20 15:06:13,530 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-20 15:06:13,530 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-20 15:06:13,531 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-20 15:06:13,533 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-20 15:06:13,534 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-20 15:06:13,534 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-20 15:06:13,536 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-20 15:06:13,536 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-20 15:06:13,537 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-20 15:06:13,537 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-20 15:06:13,538 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-20 15:06:13,539 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-20 15:06:13,540 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-20 15:06:13,541 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2018-09-20 15:06:13,557 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-20 15:06:13,557 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-20 15:06:13,558 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-20 15:06:13,558 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-09-20 15:06:13,559 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-09-20 15:06:13,559 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-09-20 15:06:13,560 INFO L133 SettingsManager]: * Use SBE=true [2018-09-20 15:06:13,560 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-20 15:06:13,560 INFO L133 SettingsManager]: * sizeof long=4 [2018-09-20 15:06:13,561 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-09-20 15:06:13,561 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-20 15:06:13,561 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-20 15:06:13,561 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-20 15:06:13,561 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-20 15:06:13,562 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-09-20 15:06:13,562 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-09-20 15:06:13,563 INFO L133 SettingsManager]: * sizeof long double=12 [2018-09-20 15:06:13,563 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-20 15:06:13,563 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-20 15:06:13,563 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-20 15:06:13,563 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-20 15:06:13,564 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-20 15:06:13,564 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-20 15:06:13,564 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-20 15:06:13,564 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-20 15:06:13,564 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-20 15:06:13,566 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-20 15:06:13,566 INFO L133 SettingsManager]: * Trace refinement strategy=WOLF [2018-09-20 15:06:13,566 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-20 15:06:13,566 INFO L133 SettingsManager]: * Command for external solver=cvc4nyu --tear-down-incremental --rewrite-divk --print-success --lang smt [2018-09-20 15:06:13,566 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-09-20 15:06:13,567 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 -> 003153f3ad6cbb58054db9843ced215cd3b72896 [2018-09-20 15:06:13,617 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-20 15:06:13,631 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-20 15:06:13,635 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-20 15:06:13,637 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-20 15:06:13,637 INFO L276 PluginConnector]: CDTParser initialized [2018-09-20 15:06:13,638 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1232a_true-unreach-call.c [2018-09-20 15:06:13,983 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2f34e5a0d/5974d2257ad7462bab1b15258c07f93b/FLAG9a0a269da [2018-09-20 15:06:14,131 INFO L277 CDTParser]: Found 1 translation units. [2018-09-20 15:06:14,131 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1232a_true-unreach-call.c [2018-09-20 15:06:14,139 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2f34e5a0d/5974d2257ad7462bab1b15258c07f93b/FLAG9a0a269da [2018-09-20 15:06:14,156 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2f34e5a0d/5974d2257ad7462bab1b15258c07f93b [2018-09-20 15:06:14,164 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-20 15:06:14,168 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-20 15:06:14,169 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-20 15:06:14,170 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-20 15:06:14,177 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-20 15:06:14,179 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 03:06:14" (1/1) ... [2018-09-20 15:06:14,182 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41d10466 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 03:06:14, skipping insertion in model container [2018-09-20 15:06:14,183 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 03:06:14" (1/1) ... [2018-09-20 15:06:14,196 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-20 15:06:14,505 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-20 15:06:14,530 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-20 15:06:14,565 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-20 15:06:14,627 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 03:06:14 WrapperNode [2018-09-20 15:06:14,627 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-20 15:06:14,628 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-20 15:06:14,628 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-20 15:06:14,629 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-20 15:06:14,647 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 03:06:14" (1/1) ... [2018-09-20 15:06:14,647 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 03:06:14" (1/1) ... [2018-09-20 15:06:14,663 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 03:06:14" (1/1) ... [2018-09-20 15:06:14,663 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 03:06:14" (1/1) ... [2018-09-20 15:06:14,673 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 03:06:14" (1/1) ... [2018-09-20 15:06:14,679 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 03:06:14" (1/1) ... [2018-09-20 15:06:14,683 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 03:06:14" (1/1) ... [2018-09-20 15:06:14,687 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-20 15:06:14,688 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-20 15:06:14,688 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-20 15:06:14,688 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-20 15:06:14,689 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 03:06:14" (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 [2018-09-20 15:06:14,826 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-20 15:06:14,827 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-20 15:06:14,827 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2018-09-20 15:06:14,827 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_double [2018-09-20 15:06:14,828 INFO L138 BoogieDeclarations]: Found implementation of procedure fmin_double [2018-09-20 15:06:14,828 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_double [2018-09-20 15:06:14,828 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-20 15:06:14,828 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-09-20 15:06:14,828 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2018-09-20 15:06:14,828 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2018-09-20 15:06:14,829 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_double [2018-09-20 15:06:14,829 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-09-20 15:06:14,829 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2018-09-20 15:06:14,829 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2018-09-20 15:06:14,829 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-09-20 15:06:14,829 INFO L130 BoogieDeclarations]: Found specification of procedure fmin_double [2018-09-20 15:06:14,830 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_double [2018-09-20 15:06:14,831 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-20 15:06:14,831 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-20 15:06:14,831 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-20 15:06:14,831 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2018-09-20 15:06:14,831 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2018-09-20 15:06:14,831 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intFLOATTYPE8 [2018-09-20 15:06:14,832 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2018-09-20 15:06:15,093 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-20 15:06:15,141 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-20 15:06:15,342 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-20 15:06:15,361 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-20 15:06:15,381 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-20 15:06:15,435 INFO L365 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-20 15:06:15,436 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 03:06:15 BoogieIcfgContainer [2018-09-20 15:06:15,436 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-20 15:06:15,437 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-20 15:06:15,438 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-20 15:06:15,442 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-20 15:06:15,442 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.09 03:06:14" (1/3) ... [2018-09-20 15:06:15,443 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16885bd0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 03:06:15, skipping insertion in model container [2018-09-20 15:06:15,443 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 03:06:14" (2/3) ... [2018-09-20 15:06:15,444 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16885bd0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 03:06:15, skipping insertion in model container [2018-09-20 15:06:15,444 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 03:06:15" (3/3) ... [2018-09-20 15:06:15,447 INFO L112 eAbstractionObserver]: Analyzing ICFG double_req_bl_1232a_true-unreach-call.c [2018-09-20 15:06:15,457 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-20 15:06:15,465 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-20 15:06:15,512 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-20 15:06:15,512 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-20 15:06:15,513 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-20 15:06:15,513 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-20 15:06:15,513 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-20 15:06:15,513 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-20 15:06:15,513 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-20 15:06:15,513 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-20 15:06:15,514 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-20 15:06:15,532 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states. [2018-09-20 15:06:15,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-09-20 15:06:15,540 INFO L368 BasicCegarLoop]: Found error trace [2018-09-20 15:06:15,542 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-20 15:06:15,545 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-20 15:06:15,551 INFO L82 PathProgramCache]: Analyzing trace with hash 534207900, now seen corresponding path program 1 times [2018-09-20 15:06:15,556 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-20 15:06:15,557 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 [2018-09-20 15:06:15,569 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-20 15:06:15,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-20 15:06:15,636 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-20 15:06:15,659 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-20 15:06:15,659 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-20 15:06:15,675 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-20 15:06:15,676 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-09-20 15:06:15,679 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-09-20 15:06:15,691 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-09-20 15:06:15,692 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-09-20 15:06:15,694 INFO L87 Difference]: Start difference. First operand 62 states. Second operand 2 states. [2018-09-20 15:06:15,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-20 15:06:15,723 INFO L93 Difference]: Finished difference Result 115 states and 143 transitions. [2018-09-20 15:06:15,723 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-09-20 15:06:15,725 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 21 [2018-09-20 15:06:15,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-20 15:06:15,737 INFO L225 Difference]: With dead ends: 115 [2018-09-20 15:06:15,737 INFO L226 Difference]: Without dead ends: 58 [2018-09-20 15:06:15,742 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-09-20 15:06:15,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2018-09-20 15:06:15,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2018-09-20 15:06:15,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2018-09-20 15:06:15,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 66 transitions. [2018-09-20 15:06:15,799 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 66 transitions. Word has length 21 [2018-09-20 15:06:15,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-20 15:06:15,800 INFO L480 AbstractCegarLoop]: Abstraction has 58 states and 66 transitions. [2018-09-20 15:06:15,800 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-09-20 15:06:15,800 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 66 transitions. [2018-09-20 15:06:15,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-09-20 15:06:15,803 INFO L368 BasicCegarLoop]: Found error trace [2018-09-20 15:06:15,804 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] [2018-09-20 15:06:15,804 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-20 15:06:15,805 INFO L82 PathProgramCache]: Analyzing trace with hash -18702094, now seen corresponding path program 1 times [2018-09-20 15:06:15,805 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-20 15:06:15,806 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 [2018-09-20 15:06:15,814 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-20 15:06:15,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-20 15:06:15,889 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-20 15:06:16,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-20 15:06:16,042 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-20 15:06:16,059 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-20 15:06:16,059 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-20 15:06:16,061 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-20 15:06:16,064 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-20 15:06:16,065 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-20 15:06:16,065 INFO L87 Difference]: Start difference. First operand 58 states and 66 transitions. Second operand 4 states. [2018-09-20 15:06:16,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-20 15:06:16,217 INFO L93 Difference]: Finished difference Result 84 states and 94 transitions. [2018-09-20 15:06:16,219 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-20 15:06:16,219 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 34 [2018-09-20 15:06:16,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-20 15:06:16,223 INFO L225 Difference]: With dead ends: 84 [2018-09-20 15:06:16,223 INFO L226 Difference]: Without dead ends: 61 [2018-09-20 15:06:16,224 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-20 15:06:16,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2018-09-20 15:06:16,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2018-09-20 15:06:16,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2018-09-20 15:06:16,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 70 transitions. [2018-09-20 15:06:16,238 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 70 transitions. Word has length 34 [2018-09-20 15:06:16,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-20 15:06:16,239 INFO L480 AbstractCegarLoop]: Abstraction has 61 states and 70 transitions. [2018-09-20 15:06:16,239 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-20 15:06:16,239 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 70 transitions. [2018-09-20 15:06:16,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2018-09-20 15:06:16,240 INFO L368 BasicCegarLoop]: Found error trace [2018-09-20 15:06:16,241 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] [2018-09-20 15:06:16,242 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-20 15:06:16,242 INFO L82 PathProgramCache]: Analyzing trace with hash 270058899, now seen corresponding path program 1 times [2018-09-20 15:06:16,243 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-20 15:06:16,243 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2018-09-20 15:06:16,250 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-20 15:06:16,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-20 15:06:16,316 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-20 15:06:16,433 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 [2018-09-20 15:06:16,451 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 [2018-09-20 15:06:16,452 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-20 15:06:16,464 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-20 15:06:16,516 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. [2018-09-20 15:06:16,517 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:24, output treesize:20 [2018-09-20 15:06:16,685 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 [2018-09-20 15:06:16,710 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 [2018-09-20 15:06:16,710 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-20 15:06:16,740 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-20 15:06:16,810 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. [2018-09-20 15:06:16,810 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:29, output treesize:14 [2018-09-20 15:06:17,465 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-20 15:06:17,466 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-20 15:06:17,479 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-20 15:06:17,480 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2018-09-20 15:06:17,480 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-09-20 15:06:17,482 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-09-20 15:06:17,483 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2018-09-20 15:06:17,483 INFO L87 Difference]: Start difference. First operand 61 states and 70 transitions. Second operand 10 states. [2018-09-20 15:06:20,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-20 15:06:20,088 INFO L93 Difference]: Finished difference Result 91 states and 107 transitions. [2018-09-20 15:06:20,090 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-09-20 15:06:20,090 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 35 [2018-09-20 15:06:20,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-20 15:06:20,092 INFO L225 Difference]: With dead ends: 91 [2018-09-20 15:06:20,092 INFO L226 Difference]: Without dead ends: 63 [2018-09-20 15:06:20,093 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=58, Invalid=214, Unknown=0, NotChecked=0, Total=272 [2018-09-20 15:06:20,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2018-09-20 15:06:20,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2018-09-20 15:06:20,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2018-09-20 15:06:20,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 72 transitions. [2018-09-20 15:06:20,104 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 72 transitions. Word has length 35 [2018-09-20 15:06:20,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-20 15:06:20,105 INFO L480 AbstractCegarLoop]: Abstraction has 63 states and 72 transitions. [2018-09-20 15:06:20,105 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-09-20 15:06:20,106 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 72 transitions. [2018-09-20 15:06:20,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-09-20 15:06:20,108 INFO L368 BasicCegarLoop]: Found error trace [2018-09-20 15:06:20,108 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] [2018-09-20 15:06:20,108 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-20 15:06:20,109 INFO L82 PathProgramCache]: Analyzing trace with hash -154338930, now seen corresponding path program 1 times [2018-09-20 15:06:20,109 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-20 15:06:20,109 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2018-09-20 15:06:20,115 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-20 15:06:20,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-20 15:06:20,173 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-20 15:06:20,219 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-20 15:06:20,219 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-20 15:06:20,232 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-20 15:06:20,233 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-20 15:06:20,233 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-20 15:06:20,233 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-20 15:06:20,234 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-20 15:06:20,234 INFO L87 Difference]: Start difference. First operand 63 states and 72 transitions. Second operand 4 states. [2018-09-20 15:06:20,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-20 15:06:20,294 INFO L93 Difference]: Finished difference Result 89 states and 100 transitions. [2018-09-20 15:06:20,298 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-20 15:06:20,299 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 36 [2018-09-20 15:06:20,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-20 15:06:20,301 INFO L225 Difference]: With dead ends: 89 [2018-09-20 15:06:20,301 INFO L226 Difference]: Without dead ends: 66 [2018-09-20 15:06:20,302 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-20 15:06:20,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2018-09-20 15:06:20,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 63. [2018-09-20 15:06:20,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2018-09-20 15:06:20,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 72 transitions. [2018-09-20 15:06:20,316 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 72 transitions. Word has length 36 [2018-09-20 15:06:20,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-20 15:06:20,316 INFO L480 AbstractCegarLoop]: Abstraction has 63 states and 72 transitions. [2018-09-20 15:06:20,316 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-20 15:06:20,316 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 72 transitions. [2018-09-20 15:06:20,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2018-09-20 15:06:20,318 INFO L368 BasicCegarLoop]: Found error trace [2018-09-20 15:06:20,318 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] [2018-09-20 15:06:20,318 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-20 15:06:20,320 INFO L82 PathProgramCache]: Analyzing trace with hash -1211823761, now seen corresponding path program 1 times [2018-09-20 15:06:20,320 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-20 15:06:20,320 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 6 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with mathsat -unsat_core_generation=3 [2018-09-20 15:06:20,325 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-20 15:06:20,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-20 15:06:20,386 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-20 15:06:20,443 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 [2018-09-20 15:06:20,451 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 [2018-09-20 15:06:20,452 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-20 15:06:20,463 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-20 15:06:20,480 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. [2018-09-20 15:06:20,481 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:24, output treesize:20 [2018-09-20 15:06:20,546 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 [2018-09-20 15:06:20,553 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 [2018-09-20 15:06:20,554 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-20 15:06:20,557 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-20 15:06:20,572 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. [2018-09-20 15:06:20,573 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:29, output treesize:14 [2018-09-20 15:06:20,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-20 15:06:20,822 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-20 15:06:20,835 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-20 15:06:20,835 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2018-09-20 15:06:20,835 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-09-20 15:06:20,836 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-09-20 15:06:20,836 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2018-09-20 15:06:20,836 INFO L87 Difference]: Start difference. First operand 63 states and 72 transitions. Second operand 10 states. [2018-09-20 15:06:21,443 WARN L178 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 25 [2018-09-20 15:06:22,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-20 15:06:22,790 INFO L93 Difference]: Finished difference Result 90 states and 104 transitions. [2018-09-20 15:06:22,792 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-09-20 15:06:22,792 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 37 [2018-09-20 15:06:22,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-20 15:06:22,794 INFO L225 Difference]: With dead ends: 90 [2018-09-20 15:06:22,794 INFO L226 Difference]: Without dead ends: 62 [2018-09-20 15:06:22,795 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=58, Invalid=214, Unknown=0, NotChecked=0, Total=272 [2018-09-20 15:06:22,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2018-09-20 15:06:22,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 60. [2018-09-20 15:06:22,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2018-09-20 15:06:22,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 67 transitions. [2018-09-20 15:06:22,804 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 67 transitions. Word has length 37 [2018-09-20 15:06:22,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-20 15:06:22,805 INFO L480 AbstractCegarLoop]: Abstraction has 60 states and 67 transitions. [2018-09-20 15:06:22,805 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-09-20 15:06:22,805 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 67 transitions. [2018-09-20 15:06:22,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2018-09-20 15:06:22,808 INFO L368 BasicCegarLoop]: Found error trace [2018-09-20 15:06:22,808 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-20 15:06:22,808 INFO L423 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-20 15:06:22,809 INFO L82 PathProgramCache]: Analyzing trace with hash 353008393, now seen corresponding path program 1 times [2018-09-20 15:06:22,810 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-20 15:06:22,810 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 7 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2018-09-20 15:06:22,820 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 7 with mathsat -unsat_core_generation=3 [2018-09-20 15:06:22,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-20 15:06:22,915 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-20 15:06:22,946 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2018-09-20 15:06:22,946 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-20 15:06:22,973 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-20 15:06:22,973 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-20 15:06:22,973 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-20 15:06:22,974 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-20 15:06:22,974 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-20 15:06:22,974 INFO L87 Difference]: Start difference. First operand 60 states and 67 transitions. Second operand 4 states. [2018-09-20 15:06:23,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-20 15:06:23,044 INFO L93 Difference]: Finished difference Result 86 states and 95 transitions. [2018-09-20 15:06:23,045 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-20 15:06:23,045 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 54 [2018-09-20 15:06:23,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-20 15:06:23,047 INFO L225 Difference]: With dead ends: 86 [2018-09-20 15:06:23,047 INFO L226 Difference]: Without dead ends: 63 [2018-09-20 15:06:23,048 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-20 15:06:23,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2018-09-20 15:06:23,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2018-09-20 15:06:23,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2018-09-20 15:06:23,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 71 transitions. [2018-09-20 15:06:23,056 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 71 transitions. Word has length 54 [2018-09-20 15:06:23,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-20 15:06:23,057 INFO L480 AbstractCegarLoop]: Abstraction has 63 states and 71 transitions. [2018-09-20 15:06:23,057 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-20 15:06:23,057 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 71 transitions. [2018-09-20 15:06:23,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2018-09-20 15:06:23,061 INFO L368 BasicCegarLoop]: Found error trace [2018-09-20 15:06:23,061 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-20 15:06:23,061 INFO L423 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-20 15:06:23,061 INFO L82 PathProgramCache]: Analyzing trace with hash 1732178434, now seen corresponding path program 1 times [2018-09-20 15:06:23,062 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-20 15:06:23,062 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 8 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with mathsat -unsat_core_generation=3 [2018-09-20 15:06:23,077 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-20 15:06:23,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-20 15:06:23,195 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-20 15:06:23,252 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 [2018-09-20 15:06:23,259 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 [2018-09-20 15:06:23,260 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-20 15:06:23,266 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-20 15:06:23,282 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. [2018-09-20 15:06:23,283 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:24, output treesize:20 [2018-09-20 15:06:23,343 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 [2018-09-20 15:06:23,359 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 [2018-09-20 15:06:23,359 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-20 15:06:23,363 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-20 15:06:23,377 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. [2018-09-20 15:06:23,378 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:29, output treesize:14 [2018-09-20 15:06:23,723 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-09-20 15:06:23,723 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-20 15:06:23,741 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-20 15:06:23,741 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2018-09-20 15:06:23,741 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-09-20 15:06:23,742 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-09-20 15:06:23,742 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2018-09-20 15:06:23,742 INFO L87 Difference]: Start difference. First operand 63 states and 71 transitions. Second operand 10 states. [2018-09-20 15:06:25,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-20 15:06:25,709 INFO L93 Difference]: Finished difference Result 91 states and 101 transitions. [2018-09-20 15:06:25,711 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-09-20 15:06:25,711 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 55 [2018-09-20 15:06:25,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-20 15:06:25,713 INFO L225 Difference]: With dead ends: 91 [2018-09-20 15:06:25,713 INFO L226 Difference]: Without dead ends: 63 [2018-09-20 15:06:25,714 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=58, Invalid=214, Unknown=0, NotChecked=0, Total=272 [2018-09-20 15:06:25,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2018-09-20 15:06:25,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2018-09-20 15:06:25,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2018-09-20 15:06:25,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 70 transitions. [2018-09-20 15:06:25,722 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 70 transitions. Word has length 55 [2018-09-20 15:06:25,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-20 15:06:25,722 INFO L480 AbstractCegarLoop]: Abstraction has 63 states and 70 transitions. [2018-09-20 15:06:25,722 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-09-20 15:06:25,724 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 70 transitions. [2018-09-20 15:06:25,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2018-09-20 15:06:25,725 INFO L368 BasicCegarLoop]: Found error trace [2018-09-20 15:06:25,725 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-20 15:06:25,726 INFO L423 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-20 15:06:25,726 INFO L82 PathProgramCache]: Analyzing trace with hash 2057904238, now seen corresponding path program 1 times [2018-09-20 15:06:25,727 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-20 15:06:25,727 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 9 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with mathsat -unsat_core_generation=3 [2018-09-20 15:06:25,742 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-20 15:06:25,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-20 15:06:25,856 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-20 15:06:26,052 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-20 15:06:26,052 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-20 15:06:26,063 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-20 15:06:26,064 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-09-20 15:06:26,064 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-20 15:06:26,064 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-20 15:06:26,064 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-09-20 15:06:26,065 INFO L87 Difference]: Start difference. First operand 63 states and 70 transitions. Second operand 5 states. [2018-09-20 15:06:26,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-20 15:06:26,254 INFO L93 Difference]: Finished difference Result 87 states and 94 transitions. [2018-09-20 15:06:26,255 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-09-20 15:06:26,255 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 56 [2018-09-20 15:06:26,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-20 15:06:26,256 INFO L225 Difference]: With dead ends: 87 [2018-09-20 15:06:26,256 INFO L226 Difference]: Without dead ends: 63 [2018-09-20 15:06:26,258 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 51 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-09-20 15:06:26,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2018-09-20 15:06:26,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2018-09-20 15:06:26,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2018-09-20 15:06:26,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 69 transitions. [2018-09-20 15:06:26,274 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 69 transitions. Word has length 56 [2018-09-20 15:06:26,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-20 15:06:26,275 INFO L480 AbstractCegarLoop]: Abstraction has 63 states and 69 transitions. [2018-09-20 15:06:26,275 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-20 15:06:26,275 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 69 transitions. [2018-09-20 15:06:26,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2018-09-20 15:06:26,278 INFO L368 BasicCegarLoop]: Found error trace [2018-09-20 15:06:26,278 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-20 15:06:26,278 INFO L423 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-20 15:06:26,279 INFO L82 PathProgramCache]: Analyzing trace with hash 1248557612, now seen corresponding path program 1 times [2018-09-20 15:06:26,279 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-20 15:06:26,279 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 10 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with mathsat -unsat_core_generation=3 [2018-09-20 15:06:26,287 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-20 15:06:26,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-20 15:06:26,383 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-20 15:06:26,499 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-20 15:06:26,500 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-20 15:06:26,513 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-20 15:06:26,513 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-09-20 15:06:26,514 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-09-20 15:06:26,514 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-09-20 15:06:26,514 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-09-20 15:06:26,515 INFO L87 Difference]: Start difference. First operand 63 states and 69 transitions. Second operand 8 states. [2018-09-20 15:06:27,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-20 15:06:27,028 INFO L93 Difference]: Finished difference Result 70 states and 76 transitions. [2018-09-20 15:06:27,029 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-09-20 15:06:27,029 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 56 [2018-09-20 15:06:27,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-20 15:06:27,030 INFO L225 Difference]: With dead ends: 70 [2018-09-20 15:06:27,031 INFO L226 Difference]: Without dead ends: 67 [2018-09-20 15:06:27,032 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2018-09-20 15:06:27,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2018-09-20 15:06:27,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2018-09-20 15:06:27,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2018-09-20 15:06:27,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 73 transitions. [2018-09-20 15:06:27,041 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 73 transitions. Word has length 56 [2018-09-20 15:06:27,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-20 15:06:27,041 INFO L480 AbstractCegarLoop]: Abstraction has 67 states and 73 transitions. [2018-09-20 15:06:27,041 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-09-20 15:06:27,042 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 73 transitions. [2018-09-20 15:06:27,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2018-09-20 15:06:27,045 INFO L368 BasicCegarLoop]: Found error trace [2018-09-20 15:06:27,045 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-20 15:06:27,045 INFO L423 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-20 15:06:27,045 INFO L82 PathProgramCache]: Analyzing trace with hash 750722725, now seen corresponding path program 1 times [2018-09-20 15:06:27,046 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-20 15:06:27,046 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 11 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with mathsat -unsat_core_generation=3 [2018-09-20 15:06:27,052 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-20 15:06:27,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-20 15:06:27,147 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-20 15:06:27,185 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2018-09-20 15:06:27,185 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-20 15:06:27,196 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-20 15:06:27,196 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-20 15:06:27,197 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-20 15:06:27,197 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-20 15:06:27,197 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-20 15:06:27,197 INFO L87 Difference]: Start difference. First operand 67 states and 73 transitions. Second operand 4 states. [2018-09-20 15:06:27,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-20 15:06:27,219 INFO L93 Difference]: Finished difference Result 91 states and 98 transitions. [2018-09-20 15:06:27,219 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-20 15:06:27,220 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 56 [2018-09-20 15:06:27,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-20 15:06:27,221 INFO L225 Difference]: With dead ends: 91 [2018-09-20 15:06:27,221 INFO L226 Difference]: Without dead ends: 68 [2018-09-20 15:06:27,222 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-20 15:06:27,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2018-09-20 15:06:27,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 65. [2018-09-20 15:06:27,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2018-09-20 15:06:27,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 70 transitions. [2018-09-20 15:06:27,228 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 70 transitions. Word has length 56 [2018-09-20 15:06:27,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-20 15:06:27,228 INFO L480 AbstractCegarLoop]: Abstraction has 65 states and 70 transitions. [2018-09-20 15:06:27,229 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-20 15:06:27,229 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 70 transitions. [2018-09-20 15:06:27,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2018-09-20 15:06:27,231 INFO L368 BasicCegarLoop]: Found error trace [2018-09-20 15:06:27,232 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-20 15:06:27,232 INFO L423 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-20 15:06:27,232 INFO L82 PathProgramCache]: Analyzing trace with hash -395687202, now seen corresponding path program 1 times [2018-09-20 15:06:27,234 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-20 15:06:27,234 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 12 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with mathsat -unsat_core_generation=3 [2018-09-20 15:06:27,239 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-20 15:06:27,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-20 15:06:27,349 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-20 15:06:27,483 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 [2018-09-20 15:06:27,490 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 [2018-09-20 15:06:27,490 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-20 15:06:27,495 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-20 15:06:27,509 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. [2018-09-20 15:06:27,510 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:24, output treesize:20 [2018-09-20 15:06:27,551 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 [2018-09-20 15:06:27,556 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 [2018-09-20 15:06:27,557 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-20 15:06:27,560 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-20 15:06:27,570 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. [2018-09-20 15:06:27,570 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:29, output treesize:14 [2018-09-20 15:06:28,040 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-09-20 15:06:28,040 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-20 15:06:28,051 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-20 15:06:28,052 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2018-09-20 15:06:28,052 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-09-20 15:06:28,052 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-09-20 15:06:28,053 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2018-09-20 15:06:28,053 INFO L87 Difference]: Start difference. First operand 65 states and 70 transitions. Second operand 10 states. [2018-09-20 15:06:29,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-20 15:06:29,721 INFO L93 Difference]: Finished difference Result 90 states and 94 transitions. [2018-09-20 15:06:29,722 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-09-20 15:06:29,723 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 57 [2018-09-20 15:06:29,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-20 15:06:29,724 INFO L225 Difference]: With dead ends: 90 [2018-09-20 15:06:29,724 INFO L226 Difference]: Without dead ends: 57 [2018-09-20 15:06:29,724 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=58, Invalid=214, Unknown=0, NotChecked=0, Total=272 [2018-09-20 15:06:29,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2018-09-20 15:06:29,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2018-09-20 15:06:29,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2018-09-20 15:06:29,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 58 transitions. [2018-09-20 15:06:29,729 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 58 transitions. Word has length 57 [2018-09-20 15:06:29,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-20 15:06:29,729 INFO L480 AbstractCegarLoop]: Abstraction has 57 states and 58 transitions. [2018-09-20 15:06:29,729 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-09-20 15:06:29,731 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 58 transitions. [2018-09-20 15:06:29,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2018-09-20 15:06:29,732 INFO L368 BasicCegarLoop]: Found error trace [2018-09-20 15:06:29,733 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-20 15:06:29,733 INFO L423 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-20 15:06:29,733 INFO L82 PathProgramCache]: Analyzing trace with hash -161364143, now seen corresponding path program 1 times [2018-09-20 15:06:29,734 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-20 15:06:29,734 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 13 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with mathsat -unsat_core_generation=3 [2018-09-20 15:06:29,740 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-20 15:06:29,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-20 15:06:29,854 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-20 15:06:30,000 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 [2018-09-20 15:06:30,006 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 [2018-09-20 15:06:30,007 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-20 15:06:30,013 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-20 15:06:30,031 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. [2018-09-20 15:06:30,031 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:24, output treesize:20 [2018-09-20 15:06:30,103 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 [2018-09-20 15:06:30,113 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 [2018-09-20 15:06:30,113 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-20 15:06:30,117 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-20 15:06:30,127 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. [2018-09-20 15:06:30,128 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:29, output treesize:14 [2018-09-20 15:06:30,452 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-20 15:06:30,452 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-20 15:06:30,473 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-20 15:06:30,474 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2018-09-20 15:06:30,474 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-09-20 15:06:30,474 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-09-20 15:06:30,475 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2018-09-20 15:06:30,475 INFO L87 Difference]: Start difference. First operand 57 states and 58 transitions. Second operand 15 states. [2018-09-20 15:06:31,039 WARN L178 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 6 [2018-09-20 15:06:31,253 WARN L178 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 6 [2018-09-20 15:06:32,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-20 15:06:32,551 INFO L93 Difference]: Finished difference Result 57 states and 58 transitions. [2018-09-20 15:06:32,553 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-09-20 15:06:32,553 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 72 [2018-09-20 15:06:32,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-20 15:06:32,553 INFO L225 Difference]: With dead ends: 57 [2018-09-20 15:06:32,554 INFO L226 Difference]: Without dead ends: 0 [2018-09-20 15:06:32,555 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=88, Invalid=562, Unknown=0, NotChecked=0, Total=650 [2018-09-20 15:06:32,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-09-20 15:06:32,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-09-20 15:06:32,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-09-20 15:06:32,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-09-20 15:06:32,557 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 72 [2018-09-20 15:06:32,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-20 15:06:32,557 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-09-20 15:06:32,557 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-09-20 15:06:32,557 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-09-20 15:06:32,557 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-09-20 15:06:32,564 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-09-20 15:06:32,911 WARN L178 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2018-09-20 15:06:33,134 WARN L178 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 21 [2018-09-20 15:06:33,136 INFO L426 ceAbstractionStarter]: For program point isnan_doubleENTRY(line 16) no Hoare annotation was computed. [2018-09-20 15:06:33,137 INFO L426 ceAbstractionStarter]: For program point isnan_doubleEXIT(line 16) no Hoare annotation was computed. [2018-09-20 15:06:33,137 INFO L426 ceAbstractionStarter]: For program point isnan_doubleFINAL(line 16) no Hoare annotation was computed. [2018-09-20 15:06:33,137 INFO L426 ceAbstractionStarter]: For program point L31(lines 31 42) no Hoare annotation was computed. [2018-09-20 15:06:33,137 INFO L426 ceAbstractionStarter]: For program point __fpclassify_doubleFINAL(lines 18 43) no Hoare annotation was computed. [2018-09-20 15:06:33,137 INFO L426 ceAbstractionStarter]: For program point L25(line 25) no Hoare annotation was computed. [2018-09-20 15:06:33,137 INFO L426 ceAbstractionStarter]: For program point L25-1(line 25) no Hoare annotation was computed. [2018-09-20 15:06:33,137 INFO L426 ceAbstractionStarter]: For program point L23(line 23) no Hoare annotation was computed. [2018-09-20 15:06:33,137 INFO L426 ceAbstractionStarter]: For program point L25-2(line 25) no Hoare annotation was computed. [2018-09-20 15:06:33,137 INFO L426 ceAbstractionStarter]: For program point L25-3(line 25) no Hoare annotation was computed. [2018-09-20 15:06:33,137 INFO L426 ceAbstractionStarter]: For program point L21-1(lines 21 26) no Hoare annotation was computed. [2018-09-20 15:06:33,138 INFO L422 ceAbstractionStarter]: At program point L21-3(lines 21 26) the Hoare annotation is: (= |__fpclassify_double_#in~x| __fpclassify_double_~x) [2018-09-20 15:06:33,138 INFO L426 ceAbstractionStarter]: For program point L21-4(lines 18 43) no Hoare annotation was computed. [2018-09-20 15:06:33,138 INFO L429 ceAbstractionStarter]: At program point __fpclassify_doubleENTRY(lines 18 43) the Hoare annotation is: true [2018-09-20 15:06:33,138 INFO L426 ceAbstractionStarter]: For program point L38(lines 38 42) no Hoare annotation was computed. [2018-09-20 15:06:33,138 INFO L426 ceAbstractionStarter]: For program point L34(lines 34 42) no Hoare annotation was computed. [2018-09-20 15:06:33,138 INFO L426 ceAbstractionStarter]: For program point L24(line 24) no Hoare annotation was computed. [2018-09-20 15:06:33,138 INFO L426 ceAbstractionStarter]: For program point L24-1(line 24) no Hoare annotation was computed. [2018-09-20 15:06:33,138 INFO L426 ceAbstractionStarter]: For program point __fpclassify_doubleEXIT(lines 18 43) no Hoare annotation was computed. [2018-09-20 15:06:33,138 INFO L426 ceAbstractionStarter]: For program point L22(line 22) no Hoare annotation was computed. [2018-09-20 15:06:33,139 INFO L426 ceAbstractionStarter]: For program point L24-2(line 24) no Hoare annotation was computed. [2018-09-20 15:06:33,139 INFO L426 ceAbstractionStarter]: For program point L22-1(line 22) no Hoare annotation was computed. [2018-09-20 15:06:33,139 INFO L426 ceAbstractionStarter]: For program point L22-2(line 22) no Hoare annotation was computed. [2018-09-20 15:06:33,139 INFO L426 ceAbstractionStarter]: For program point L22-3(line 22) no Hoare annotation was computed. [2018-09-20 15:06:33,139 INFO L426 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2018-09-20 15:06:33,139 INFO L429 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2018-09-20 15:06:33,139 INFO L426 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-09-20 15:06:33,139 INFO L426 ceAbstractionStarter]: For program point L60(line 60) no Hoare annotation was computed. [2018-09-20 15:06:33,139 INFO L426 ceAbstractionStarter]: For program point __signbit_doubleFINAL(lines 54 64) no Hoare annotation was computed. [2018-09-20 15:06:33,139 INFO L426 ceAbstractionStarter]: For program point L59(line 59) no Hoare annotation was computed. [2018-09-20 15:06:33,139 INFO L426 ceAbstractionStarter]: For program point L60-1(line 60) no Hoare annotation was computed. [2018-09-20 15:06:33,140 INFO L426 ceAbstractionStarter]: For program point L58(line 58) no Hoare annotation was computed. [2018-09-20 15:06:33,140 INFO L426 ceAbstractionStarter]: For program point L60-2(line 60) no Hoare annotation was computed. [2018-09-20 15:06:33,140 INFO L426 ceAbstractionStarter]: For program point L58-1(line 58) no Hoare annotation was computed. [2018-09-20 15:06:33,140 INFO L426 ceAbstractionStarter]: For program point L58-2(line 58) no Hoare annotation was computed. [2018-09-20 15:06:33,140 INFO L426 ceAbstractionStarter]: For program point L57-1(lines 57 61) no Hoare annotation was computed. [2018-09-20 15:06:33,140 INFO L426 ceAbstractionStarter]: For program point __signbit_doubleEXIT(lines 54 64) no Hoare annotation was computed. [2018-09-20 15:06:33,140 INFO L426 ceAbstractionStarter]: For program point L58-3(line 58) no Hoare annotation was computed. [2018-09-20 15:06:33,140 INFO L422 ceAbstractionStarter]: At program point L57-3(lines 57 61) the Hoare annotation is: (= |__signbit_double_#in~x| __signbit_double_~x) [2018-09-20 15:06:33,140 INFO L426 ceAbstractionStarter]: For program point L57-4(lines 57 61) no Hoare annotation was computed. [2018-09-20 15:06:33,140 INFO L429 ceAbstractionStarter]: At program point __signbit_doubleENTRY(lines 54 64) the Hoare annotation is: true [2018-09-20 15:06:33,141 INFO L426 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-09-20 15:06:33,141 INFO L429 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-09-20 15:06:33,141 INFO L429 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-09-20 15:06:33,141 INFO L426 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-09-20 15:06:33,141 INFO L429 ceAbstractionStarter]: At program point mainENTRY(lines 66 85) the Hoare annotation is: true [2018-09-20 15:06:33,141 INFO L426 ceAbstractionStarter]: For program point mainEXIT(lines 66 85) no Hoare annotation was computed. [2018-09-20 15:06:33,141 INFO L426 ceAbstractionStarter]: For program point L80(line 80) no Hoare annotation was computed. [2018-09-20 15:06:33,141 INFO L426 ceAbstractionStarter]: For program point L79(line 79) no Hoare annotation was computed. [2018-09-20 15:06:33,143 INFO L422 ceAbstractionStarter]: At program point L79-1(line 79) the Hoare annotation is: (let ((.cse0 (fp.neg (_ +zero 11 53)))) (and (= main_~res~0 .cse0) (= (_ +zero 11 53) main_~x~0) |main_#t~short11| (= main_~y~0 .cse0))) [2018-09-20 15:06:33,143 INFO L426 ceAbstractionStarter]: For program point L79-2(line 79) no Hoare annotation was computed. [2018-09-20 15:06:33,143 INFO L426 ceAbstractionStarter]: For program point mainFINAL(lines 66 85) no Hoare annotation was computed. [2018-09-20 15:06:33,143 INFO L422 ceAbstractionStarter]: At program point L76(line 76) the Hoare annotation is: (and (= (_ +zero 11 53) main_~x~0) (= main_~y~0 (fp.neg (_ +zero 11 53)))) [2018-09-20 15:06:33,143 INFO L426 ceAbstractionStarter]: For program point L76-1(line 76) no Hoare annotation was computed. [2018-09-20 15:06:33,144 INFO L426 ceAbstractionStarter]: For program point L79-4(lines 79 82) no Hoare annotation was computed. [2018-09-20 15:06:33,144 INFO L426 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 80) no Hoare annotation was computed. [2018-09-20 15:06:33,144 INFO L426 ceAbstractionStarter]: For program point fmin_doubleFINAL(lines 45 52) no Hoare annotation was computed. [2018-09-20 15:06:33,144 INFO L429 ceAbstractionStarter]: At program point fmin_doubleENTRY(lines 45 52) the Hoare annotation is: true [2018-09-20 15:06:33,144 INFO L426 ceAbstractionStarter]: For program point fmin_doubleEXIT(lines 45 52) no Hoare annotation was computed. [2018-09-20 15:06:33,144 INFO L426 ceAbstractionStarter]: For program point L51(line 51) no Hoare annotation was computed. [2018-09-20 15:06:33,144 INFO L426 ceAbstractionStarter]: For program point L51-2(line 51) no Hoare annotation was computed. [2018-09-20 15:06:33,144 INFO L422 ceAbstractionStarter]: At program point L48(line 48) the Hoare annotation is: (let ((.cse0 (= fmin_double_~x |fmin_double_#in~x|))) (or (and (exists ((v_prenex_3 (_ BitVec 64))) (and (= (fp ((_ extract 63 63) v_prenex_3) ((_ extract 62 52) v_prenex_3) ((_ extract 51 0) v_prenex_3)) |fmin_double_#in~x|) (not (bvule ((_ extract 63 32) v_prenex_3) (_ bv1048575 32))))) .cse0) (and (= fmin_double_~y |fmin_double_#in~y|) .cse0))) [2018-09-20 15:06:33,145 INFO L426 ceAbstractionStarter]: For program point L48-1(lines 48 49) no Hoare annotation was computed. [2018-09-20 15:06:33,145 INFO L422 ceAbstractionStarter]: At program point L46(line 46) the Hoare annotation is: (and (= fmin_double_~y |fmin_double_#in~y|) (= fmin_double_~x |fmin_double_#in~x|)) [2018-09-20 15:06:33,145 INFO L426 ceAbstractionStarter]: For program point L46-1(lines 46 47) no Hoare annotation was computed. [2018-09-20 15:06:33,159 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.09 03:06:33 BoogieIcfgContainer [2018-09-20 15:06:33,160 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-20 15:06:33,160 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-09-20 15:06:33,160 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-09-20 15:06:33,160 INFO L276 PluginConnector]: Witness Printer initialized [2018-09-20 15:06:33,161 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 03:06:15" (3/4) ... [2018-09-20 15:06:33,164 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-09-20 15:06:33,171 INFO L316 RCFGBacktranslator]: Ignoring RootEdge to procedure isnan_double [2018-09-20 15:06:33,171 INFO L316 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-09-20 15:06:33,171 INFO L316 RCFGBacktranslator]: Ignoring RootEdge to procedure __fpclassify_double [2018-09-20 15:06:33,172 INFO L316 RCFGBacktranslator]: Ignoring RootEdge to procedure __signbit_double [2018-09-20 15:06:33,172 INFO L316 RCFGBacktranslator]: Ignoring RootEdge to procedure fmin_double [2018-09-20 15:06:33,172 INFO L316 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-09-20 15:06:33,178 INFO L850 BoogieBacktranslator]: Reduced CFG by removing 16 nodes and edges [2018-09-20 15:06:33,178 INFO L850 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2018-09-20 15:06:33,179 INFO L850 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-09-20 15:06:33,206 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: \old(x) == x [2018-09-20 15:06:33,207 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: \old(x) == x [2018-09-20 15:06:33,239 INFO L145 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2018-09-20 15:06:33,239 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-09-20 15:06:33,241 INFO L168 Benchmark]: Toolchain (without parser) took 19075.75 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 208.1 MB). Free memory was 951.8 MB in the beginning and 884.0 MB in the end (delta: 67.8 MB). Peak memory consumption was 276.0 MB. Max. memory is 11.5 GB. [2018-09-20 15:06:33,242 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-09-20 15:06:33,243 INFO L168 Benchmark]: CACSL2BoogieTranslator took 458.64 ms. Allocated memory is still 1.0 GB. Free memory was 951.8 MB in the beginning and 941.1 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-09-20 15:06:33,243 INFO L168 Benchmark]: Boogie Preprocessor took 58.92 ms. Allocated memory is still 1.0 GB. Free memory was 941.1 MB in the beginning and 935.7 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-09-20 15:06:33,245 INFO L168 Benchmark]: RCFGBuilder took 748.12 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 149.4 MB). Free memory was 935.7 MB in the beginning and 1.1 GB in the end (delta: -181.8 MB). Peak memory consumption was 21.9 MB. Max. memory is 11.5 GB. [2018-09-20 15:06:33,246 INFO L168 Benchmark]: TraceAbstraction took 17722.42 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 58.7 MB). Free memory was 1.1 GB in the beginning and 891.5 MB in the end (delta: 226.1 MB). Peak memory consumption was 284.8 MB. Max. memory is 11.5 GB. [2018-09-20 15:06:33,246 INFO L168 Benchmark]: Witness Printer took 79.36 ms. Allocated memory is still 1.2 GB. Free memory was 891.5 MB in the beginning and 884.0 MB in the end (delta: 7.5 MB). Peak memory consumption was 7.5 MB. Max. memory is 11.5 GB. [2018-09-20 15:06:33,252 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 458.64 ms. Allocated memory is still 1.0 GB. Free memory was 951.8 MB in the beginning and 941.1 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 58.92 ms. Allocated memory is still 1.0 GB. Free memory was 941.1 MB in the beginning and 935.7 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 748.12 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 149.4 MB). Free memory was 935.7 MB in the beginning and 1.1 GB in the end (delta: -181.8 MB). Peak memory consumption was 21.9 MB. Max. memory is 11.5 GB. * TraceAbstraction took 17722.42 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 58.7 MB). Free memory was 1.1 GB in the beginning and 891.5 MB in the end (delta: 226.1 MB). Peak memory consumption was 284.8 MB. Max. memory is 11.5 GB. * Witness Printer took 79.36 ms. Allocated memory is still 1.2 GB. Free memory was 891.5 MB in the beginning and 884.0 MB in the end (delta: 7.5 MB). Peak memory consumption was 7.5 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 80]: 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 - InvariantResult [Line: 57]: Loop Invariant Derived loop invariant: \old(x) == x - InvariantResult [Line: 21]: Loop Invariant Derived loop invariant: \old(x) == x - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 65 locations, 1 error locations. SAFE Result, 17.6s OverallTime, 12 OverallIterations, 2 TraceHistogramMax, 11.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.5s HoareAnnotationTime, HoareTripleCheckerStatistics: 690 SDtfs, 261 SDslu, 2789 SDs, 0 SdLazy, 1014 SolverSat, 42 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 6.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 605 GetRequests, 498 SyntacticMatches, 1 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 7.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=67occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 12 MinimizatonAttempts, 8 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 13 LocationsWithAnnotation, 41 PreInvPairs, 50 NumberOfFragments, 69 HoareAnnotationTreeSize, 41 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 13 FomulaSimplificationsInter, 43 FormulaSimplificationTreeSizeReductionInter, 0.4s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 4.1s InterpolantComputationTime, 569 NumberOfCodeBlocks, 569 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 557 ConstructedInterpolants, 86 QuantifiedInterpolants, 119134 SizeOfPredicates, 49 NumberOfNonLiveVariables, 1232 ConjunctsInSsa, 86 ConjunctsInUnsatCore, 12 InterpolantComputations, 12 PerfectInterpolantSequences, 126/126 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...