/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/Ultimate.py --spec ../../../trunk/examples/svcomp/ReachSafety.prp --file ../../../trunk/examples/svcomp/float-newlib/float_req_bl_1232b_false-unreach-call.c --full-output --architecture 32bit --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5eb3fea6 Calling Ultimate with: java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/float-newlib/float_req_bl_1232b_false-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 36a0a55241cede481b157c1ab9f348d708a5b166 --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false ................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/float-newlib/float_req_bl_1232b_false-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 36a0a55241cede481b157c1ab9f348d708a5b166 --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false ....................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.1.23-5eb3fea [2018-09-21 18:41:50,932 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-21 18:41:50,935 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-21 18:41:50,955 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-21 18:41:50,956 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-21 18:41:50,958 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-21 18:41:50,959 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-21 18:41:50,962 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-21 18:41:50,964 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-21 18:41:50,965 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-21 18:41:50,968 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-21 18:41:50,970 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-21 18:41:50,972 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-21 18:41:50,973 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-21 18:41:50,976 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-21 18:41:50,977 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-21 18:41:50,978 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-21 18:41:50,987 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-21 18:41:50,989 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-21 18:41:50,994 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-21 18:41:50,996 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-21 18:41:50,998 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-21 18:41:51,004 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-21 18:41:51,004 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-21 18:41:51,004 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-21 18:41:51,007 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-21 18:41:51,008 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-21 18:41:51,009 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-21 18:41:51,010 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-21 18:41:51,013 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-21 18:41:51,013 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-21 18:41:51,015 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-21 18:41:51,015 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-21 18:41:51,015 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-21 18:41:51,016 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-21 18:41:51,019 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-21 18:41:51,021 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-09-21 18:41:51,042 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-21 18:41:51,043 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-21 18:41:51,043 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-21 18:41:51,044 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-09-21 18:41:51,044 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-09-21 18:41:51,044 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-09-21 18:41:51,045 INFO L133 SettingsManager]: * Use SBE=true [2018-09-21 18:41:51,045 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-21 18:41:51,045 INFO L133 SettingsManager]: * sizeof long=4 [2018-09-21 18:41:51,045 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-21 18:41:51,045 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-09-21 18:41:51,046 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-21 18:41:51,046 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-21 18:41:51,046 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-21 18:41:51,046 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-21 18:41:51,046 INFO L133 SettingsManager]: * sizeof long double=12 [2018-09-21 18:41:51,046 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-21 18:41:51,047 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-21 18:41:51,047 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-21 18:41:51,047 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-21 18:41:51,047 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-21 18:41:51,047 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-21 18:41:51,047 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-21 18:41:51,048 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-21 18:41:51,048 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-21 18:41:51,048 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-21 18:41:51,048 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-09-21 18:41:51,048 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-21 18:41:51,048 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-21 18:41:51,049 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 -> 36a0a55241cede481b157c1ab9f348d708a5b166 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false [2018-09-21 18:41:51,099 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-21 18:41:51,128 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-21 18:41:51,134 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-21 18:41:51,136 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-21 18:41:51,137 INFO L276 PluginConnector]: CDTParser initialized [2018-09-21 18:41:51,138 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1232b_false-unreach-call.c [2018-09-21 18:41:51,500 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cc4af8ebb/fe1c1c6ca13c444ba6f385a8ad4cf799/FLAGe5465db1f [2018-09-21 18:41:51,666 INFO L277 CDTParser]: Found 1 translation units. [2018-09-21 18:41:51,667 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/float_req_bl_1232b_false-unreach-call.c [2018-09-21 18:41:51,674 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cc4af8ebb/fe1c1c6ca13c444ba6f385a8ad4cf799/FLAGe5465db1f [2018-09-21 18:41:51,692 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cc4af8ebb/fe1c1c6ca13c444ba6f385a8ad4cf799 [2018-09-21 18:41:51,696 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-21 18:41:51,699 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-21 18:41:51,700 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-21 18:41:51,701 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-21 18:41:51,708 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-21 18:41:51,709 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 06:41:51" (1/1) ... [2018-09-21 18:41:51,712 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4368f7e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:41:51, skipping insertion in model container [2018-09-21 18:41:51,712 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 06:41:51" (1/1) ... [2018-09-21 18:41:51,726 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-21 18:41:51,995 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-21 18:41:52,016 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-21 18:41:52,044 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-21 18:41:52,083 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:41:52 WrapperNode [2018-09-21 18:41:52,084 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-21 18:41:52,085 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-21 18:41:52,085 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-21 18:41:52,085 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-21 18:41:52,102 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:41:52" (1/1) ... [2018-09-21 18:41:52,102 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:41:52" (1/1) ... [2018-09-21 18:41:52,115 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:41:52" (1/1) ... [2018-09-21 18:41:52,115 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:41:52" (1/1) ... [2018-09-21 18:41:52,122 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:41:52" (1/1) ... [2018-09-21 18:41:52,128 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:41:52" (1/1) ... [2018-09-21 18:41:52,130 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:41:52" (1/1) ... [2018-09-21 18:41:52,133 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-21 18:41:52,133 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-21 18:41:52,133 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-21 18:41:52,134 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-21 18:41:52,135 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:41:52" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-21 18:41:52,205 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-21 18:41:52,205 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-21 18:41:52,205 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_float [2018-09-21 18:41:52,206 INFO L138 BoogieDeclarations]: Found implementation of procedure fmin_float [2018-09-21 18:41:52,206 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_float [2018-09-21 18:41:52,206 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-21 18:41:52,206 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-09-21 18:41:52,206 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2018-09-21 18:41:52,207 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_float [2018-09-21 18:41:52,207 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-09-21 18:41:52,207 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2018-09-21 18:41:52,207 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-09-21 18:41:52,207 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-09-21 18:41:52,207 INFO L130 BoogieDeclarations]: Found specification of procedure fmin_float [2018-09-21 18:41:52,208 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_float [2018-09-21 18:41:52,208 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-21 18:41:52,208 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-21 18:41:52,208 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-21 18:41:52,208 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2018-09-21 18:41:52,208 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-09-21 18:41:52,209 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~real [2018-09-21 18:41:52,209 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2018-09-21 18:41:52,822 INFO L373 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-21 18:41:52,822 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 06:41:52 BoogieIcfgContainer [2018-09-21 18:41:52,823 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-21 18:41:52,824 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-21 18:41:52,824 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-21 18:41:52,827 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-21 18:41:52,827 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 06:41:51" (1/3) ... [2018-09-21 18:41:52,828 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f09a7cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 06:41:52, skipping insertion in model container [2018-09-21 18:41:52,828 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:41:52" (2/3) ... [2018-09-21 18:41:52,829 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f09a7cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 06:41:52, skipping insertion in model container [2018-09-21 18:41:52,829 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 06:41:52" (3/3) ... [2018-09-21 18:41:52,831 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_1232b_false-unreach-call.c [2018-09-21 18:41:52,841 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-21 18:41:52,850 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-21 18:41:52,894 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-21 18:41:52,895 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-21 18:41:52,895 INFO L382 AbstractCegarLoop]: Hoare is false [2018-09-21 18:41:52,895 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-21 18:41:52,895 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-21 18:41:52,896 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-21 18:41:52,896 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-21 18:41:52,896 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-21 18:41:52,896 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-21 18:41:52,913 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states. [2018-09-21 18:41:52,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-09-21 18:41:52,940 INFO L368 BasicCegarLoop]: Found error trace [2018-09-21 18:41:52,942 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-21 18:41:52,944 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-21 18:41:52,953 INFO L82 PathProgramCache]: Analyzing trace with hash 969493283, now seen corresponding path program 1 times [2018-09-21 18:41:52,955 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-21 18:41:52,956 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-21 18:41:53,002 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-21 18:41:53,002 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-21 18:41:53,002 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-21 18:41:53,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-21 18:41:53,104 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-21 18:41:53,109 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-21 18:41:53,110 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-09-21 18:41:53,113 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-09-21 18:41:53,126 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-09-21 18:41:53,127 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-09-21 18:41:53,129 INFO L87 Difference]: Start difference. First operand 60 states. Second operand 2 states. [2018-09-21 18:41:53,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-21 18:41:53,153 INFO L93 Difference]: Finished difference Result 60 states and 68 transitions. [2018-09-21 18:41:53,153 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-09-21 18:41:53,155 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 22 [2018-09-21 18:41:53,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-21 18:41:53,167 INFO L225 Difference]: With dead ends: 60 [2018-09-21 18:41:53,167 INFO L226 Difference]: Without dead ends: 56 [2018-09-21 18:41:53,169 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-09-21 18:41:53,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2018-09-21 18:41:53,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2018-09-21 18:41:53,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2018-09-21 18:41:53,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 64 transitions. [2018-09-21 18:41:53,217 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 64 transitions. Word has length 22 [2018-09-21 18:41:53,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-21 18:41:53,218 INFO L480 AbstractCegarLoop]: Abstraction has 56 states and 64 transitions. [2018-09-21 18:41:53,218 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-09-21 18:41:53,218 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 64 transitions. [2018-09-21 18:41:53,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-09-21 18:41:53,220 INFO L368 BasicCegarLoop]: Found error trace [2018-09-21 18:41:53,221 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] [2018-09-21 18:41:53,221 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-21 18:41:53,221 INFO L82 PathProgramCache]: Analyzing trace with hash -228670553, now seen corresponding path program 1 times [2018-09-21 18:41:53,222 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-21 18:41:53,222 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-21 18:41:53,224 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-21 18:41:53,224 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-21 18:41:53,224 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-21 18:41:53,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-21 18:41:53,365 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-21 18:41:53,365 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-21 18:41:53,366 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-21 18:41:53,367 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-21 18:41:53,368 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-21 18:41:53,368 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-21 18:41:53,368 INFO L87 Difference]: Start difference. First operand 56 states and 64 transitions. Second operand 4 states. [2018-09-21 18:41:53,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-21 18:41:53,480 INFO L93 Difference]: Finished difference Result 60 states and 69 transitions. [2018-09-21 18:41:53,481 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-21 18:41:53,481 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 31 [2018-09-21 18:41:53,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-21 18:41:53,485 INFO L225 Difference]: With dead ends: 60 [2018-09-21 18:41:53,485 INFO L226 Difference]: Without dead ends: 60 [2018-09-21 18:41:53,486 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 [2018-09-21 18:41:53,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2018-09-21 18:41:53,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2018-09-21 18:41:53,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2018-09-21 18:41:53,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 69 transitions. [2018-09-21 18:41:53,498 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 69 transitions. Word has length 31 [2018-09-21 18:41:53,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-21 18:41:53,499 INFO L480 AbstractCegarLoop]: Abstraction has 60 states and 69 transitions. [2018-09-21 18:41:53,499 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-21 18:41:53,499 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 69 transitions. [2018-09-21 18:41:53,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-09-21 18:41:53,501 INFO L368 BasicCegarLoop]: Found error trace [2018-09-21 18:41:53,501 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] [2018-09-21 18:41:53,502 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-21 18:41:53,502 INFO L82 PathProgramCache]: Analyzing trace with hash 738637230, now seen corresponding path program 1 times [2018-09-21 18:41:53,502 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-21 18:41:53,503 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-21 18:41:53,504 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-21 18:41:53,504 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-21 18:41:53,504 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-21 18:41:53,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-21 18:41:53,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-21 18:41:53,617 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-21 18:41:53,617 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-21 18:41:53,618 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-21 18:41:53,619 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-21 18:41:53,619 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-21 18:41:53,619 INFO L87 Difference]: Start difference. First operand 60 states and 69 transitions. Second operand 4 states. [2018-09-21 18:41:53,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-21 18:41:53,772 INFO L93 Difference]: Finished difference Result 64 states and 74 transitions. [2018-09-21 18:41:53,776 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-21 18:41:53,777 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 34 [2018-09-21 18:41:53,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-21 18:41:53,782 INFO L225 Difference]: With dead ends: 64 [2018-09-21 18:41:53,782 INFO L226 Difference]: Without dead ends: 64 [2018-09-21 18:41:53,782 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 [2018-09-21 18:41:53,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2018-09-21 18:41:53,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 60. [2018-09-21 18:41:53,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2018-09-21 18:41:53,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 69 transitions. [2018-09-21 18:41:53,802 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 69 transitions. Word has length 34 [2018-09-21 18:41:53,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-21 18:41:53,803 INFO L480 AbstractCegarLoop]: Abstraction has 60 states and 69 transitions. [2018-09-21 18:41:53,803 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-21 18:41:53,803 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 69 transitions. [2018-09-21 18:41:53,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-09-21 18:41:53,805 INFO L368 BasicCegarLoop]: Found error trace [2018-09-21 18:41:53,805 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] [2018-09-21 18:41:53,805 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-21 18:41:53,808 INFO L82 PathProgramCache]: Analyzing trace with hash -1058314129, now seen corresponding path program 1 times [2018-09-21 18:41:53,808 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-21 18:41:53,808 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-21 18:41:53,811 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-21 18:41:53,811 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-21 18:41:53,811 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-21 18:41:53,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-09-21 18:41:53,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-09-21 18:41:53,918 INFO L443 BasicCegarLoop]: Counterexample might be feasible [2018-09-21 18:41:53,947 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.09 06:41:53 BoogieIcfgContainer [2018-09-21 18:41:53,948 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-21 18:41:53,948 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-09-21 18:41:53,948 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-09-21 18:41:53,948 INFO L276 PluginConnector]: Witness Printer initialized [2018-09-21 18:41:53,949 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 06:41:52" (3/4) ... [2018-09-21 18:41:53,954 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-09-21 18:41:53,954 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-09-21 18:41:53,955 INFO L168 Benchmark]: Toolchain (without parser) took 2257.98 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 136.3 MB). Free memory was 951.9 MB in the beginning and 1.1 GB in the end (delta: -106.4 MB). Peak memory consumption was 29.9 MB. Max. memory is 11.5 GB. [2018-09-21 18:41:53,957 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-09-21 18:41:53,958 INFO L168 Benchmark]: CACSL2BoogieTranslator took 383.75 ms. Allocated memory is still 1.0 GB. Free memory was 951.9 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. [2018-09-21 18:41:53,959 INFO L168 Benchmark]: Boogie Preprocessor took 48.39 ms. Allocated memory is still 1.0 GB. Free memory is still 941.1 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-09-21 18:41:53,960 INFO L168 Benchmark]: RCFGBuilder took 689.39 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 136.3 MB). Free memory was 941.1 MB in the beginning and 1.1 GB in the end (delta: -158.2 MB). Peak memory consumption was 27.1 MB. Max. memory is 11.5 GB. [2018-09-21 18:41:53,961 INFO L168 Benchmark]: TraceAbstraction took 1124.07 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: 41.0 MB). Peak memory consumption was 41.0 MB. Max. memory is 11.5 GB. [2018-09-21 18:41:53,962 INFO L168 Benchmark]: Witness Printer took 6.04 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-09-21 18:41:53,967 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 383.75 ms. Allocated memory is still 1.0 GB. Free memory was 951.9 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 48.39 ms. Allocated memory is still 1.0 GB. Free memory is still 941.1 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 689.39 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 136.3 MB). Free memory was 941.1 MB in the beginning and 1.1 GB in the end (delta: -158.2 MB). Peak memory consumption was 27.1 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1124.07 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: 41.0 MB). Peak memory consumption was 41.0 MB. Max. memory is 11.5 GB. * Witness Printer took 6.04 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: 70]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 69, overapproximation of someUnaryFLOAToperation at line 64. Possible FailurePath: [L64] float x = -0.0f; [L65] float y = 0.0f; VAL [y=0] [L66] CALL, EXPR fmin_float(x, y) VAL [\old(x)=2139095043, \old(y)=0] [L36] CALL, EXPR __fpclassify_float(x) VAL [\old(x)=2139095043] [L13] __uint32_t w; VAL [\old(x)=2139095043, x=2139095043] [L16] FCALL ieee_float_shape_type gf_u; VAL [\old(x)=2139095043, gf_u={2139095046:0}, x=2139095043] [L17] FCALL gf_u.value = (x) VAL [\old(x)=2139095043, gf_u={2139095046:0}, x=2139095043] [L18] EXPR, FCALL gf_u.word VAL [\old(x)=2139095043, gf_u={2139095046:0}, gf_u.word=2139095041, x=2139095043] [L18] (w) = gf_u.word VAL [\old(x)=2139095043, gf_u={2139095046:0}, gf_u.word=2139095041, w=2139095041, x=2139095043] [L18] FCALL (w) = gf_u.word VAL [(w) = gf_u.word=2139095044, \old(x)=2139095043, gf_u={2139095046:0}, gf_u.word=2139095041, w=2139095041, x=2139095043] [L19] COND FALSE !(0) VAL [\old(x)=2139095043, w=2139095041, x=2139095043] [L21] COND FALSE !(w == 0x00000000 || w == 0x80000000) VAL [\old(x)=2139095043, w=2139095041, x=2139095043] [L23-L24] COND FALSE !((w >= 0x00800000 && w <= 0x7f7fffff) || (w >= 0x80800000 && w <= 0xff7fffff)) VAL [\old(x)=2139095043, w=2139095041, x=2139095043] [L26-L27] COND FALSE !((w >= 0x00000001 && w <= 0x007fffff) || (w >= 0x80000001 && w <= 0x807fffff)) VAL [\old(x)=2139095043, w=2139095041, x=2139095043] [L29] COND FALSE !(w == 0x7f800000 || w == 0xff800000) [L32] RET return 0; VAL [\old(x)=2139095043, \result=0, w=2139095041, x=2139095043] [L36] EXPR __fpclassify_float(x) VAL [\old(x)=2139095043, \old(y)=0, __fpclassify_float(x)=0, x=2139095043, y=0] [L36] COND TRUE __fpclassify_float(x) == 0 [L37] RET return y; VAL [\old(x)=2139095043, \old(y)=0, \result=0, x=2139095043, y=0] [L66] EXPR fmin_float(x, y) VAL [fmin_float(x, y)=0, x=2139095043, y=0] [L66] float res = fmin_float(x, y); [L69] EXPR res == -0.0f && __signbit_float(res) == 1 VAL [res=0, res == -0.0f && __signbit_float(res) == 1=0, x=2139095043, y=0] [L69] COND FALSE, EXPR !(res == -0.0f && __signbit_float(res) == 1) VAL [res=0, res == -0.0f && __signbit_float(res) == 1=0, x=2139095043, y=0] [L69] COND TRUE !(res == -0.0f && __signbit_float(res) == 1) [L70] __VERIFIER_error() VAL [res=0, x=2139095043, y=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 60 locations, 1 error locations. UNSAFE Result, 1.0s OverallTime, 4 OverallIterations, 1 TraceHistogramMax, 0.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 197 SDtfs, 0 SDslu, 242 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, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=60occurred 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, 0.2s InterpolantComputationTime, 121 NumberOfCodeBlocks, 121 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 84 ConstructedInterpolants, 0 QuantifiedInterpolants, 2934 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 0.1.23-5eb3fea [2018-09-21 18:41:56,344 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-21 18:41:56,346 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-21 18:41:56,359 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-21 18:41:56,359 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-21 18:41:56,360 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-21 18:41:56,362 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-21 18:41:56,364 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-21 18:41:56,366 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-21 18:41:56,367 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-21 18:41:56,368 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-21 18:41:56,369 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-21 18:41:56,370 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-21 18:41:56,371 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-21 18:41:56,373 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-21 18:41:56,374 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-21 18:41:56,375 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-21 18:41:56,377 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-21 18:41:56,379 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-21 18:41:56,381 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-21 18:41:56,382 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-21 18:41:56,384 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-21 18:41:56,387 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-21 18:41:56,387 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-21 18:41:56,387 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-21 18:41:56,389 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-21 18:41:56,390 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-21 18:41:56,391 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-21 18:41:56,392 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-21 18:41:56,394 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-21 18:41:56,394 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-21 18:41:56,395 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-21 18:41:56,396 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-21 18:41:56,396 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-21 18:41:56,398 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-21 18:41:56,399 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-21 18:41:56,399 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2018-09-21 18:41:56,424 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-21 18:41:56,427 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-21 18:41:56,429 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-21 18:41:56,430 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-09-21 18:41:56,433 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-09-21 18:41:56,433 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-09-21 18:41:56,433 INFO L133 SettingsManager]: * Use SBE=true [2018-09-21 18:41:56,433 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-21 18:41:56,434 INFO L133 SettingsManager]: * sizeof long=4 [2018-09-21 18:41:56,434 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-09-21 18:41:56,434 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-21 18:41:56,434 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-21 18:41:56,434 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-21 18:41:56,435 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-21 18:41:56,435 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-09-21 18:41:56,435 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-09-21 18:41:56,435 INFO L133 SettingsManager]: * sizeof long double=12 [2018-09-21 18:41:56,435 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-21 18:41:56,439 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-21 18:41:56,439 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-21 18:41:56,440 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-21 18:41:56,440 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-21 18:41:56,440 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-21 18:41:56,440 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-21 18:41:56,442 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-21 18:41:56,442 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-21 18:41:56,442 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-21 18:41:56,442 INFO L133 SettingsManager]: * Trace refinement strategy=WOLF [2018-09-21 18:41:56,442 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-21 18:41:56,443 INFO L133 SettingsManager]: * Command for external solver=cvc4nyu --tear-down-incremental --rewrite-divk --print-success --lang smt [2018-09-21 18:41:56,443 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-09-21 18:41:56,443 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 -> 36a0a55241cede481b157c1ab9f348d708a5b166 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false [2018-09-21 18:41:56,515 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-21 18:41:56,535 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-21 18:41:56,542 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-21 18:41:56,545 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-21 18:41:56,545 INFO L276 PluginConnector]: CDTParser initialized [2018-09-21 18:41:56,546 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1232b_false-unreach-call.c [2018-09-21 18:41:56,899 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9e9ce8188/1b4aec627c774350a73d508e84534efa/FLAGe9bb45b03 [2018-09-21 18:41:57,088 INFO L277 CDTParser]: Found 1 translation units. [2018-09-21 18:41:57,090 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/float_req_bl_1232b_false-unreach-call.c [2018-09-21 18:41:57,101 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9e9ce8188/1b4aec627c774350a73d508e84534efa/FLAGe9bb45b03 [2018-09-21 18:41:57,118 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9e9ce8188/1b4aec627c774350a73d508e84534efa [2018-09-21 18:41:57,123 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-21 18:41:57,127 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-21 18:41:57,128 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-21 18:41:57,129 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-21 18:41:57,136 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-21 18:41:57,137 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 06:41:57" (1/1) ... [2018-09-21 18:41:57,140 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@638e1dea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:41:57, skipping insertion in model container [2018-09-21 18:41:57,141 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 06:41:57" (1/1) ... [2018-09-21 18:41:57,154 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-21 18:41:57,370 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-21 18:41:57,387 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-21 18:41:57,403 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-21 18:41:57,441 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:41:57 WrapperNode [2018-09-21 18:41:57,442 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-21 18:41:57,443 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-21 18:41:57,444 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-21 18:41:57,444 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-21 18:41:57,457 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:41:57" (1/1) ... [2018-09-21 18:41:57,458 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:41:57" (1/1) ... [2018-09-21 18:41:57,471 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:41:57" (1/1) ... [2018-09-21 18:41:57,472 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:41:57" (1/1) ... [2018-09-21 18:41:57,480 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:41:57" (1/1) ... [2018-09-21 18:41:57,486 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:41:57" (1/1) ... [2018-09-21 18:41:57,489 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:41:57" (1/1) ... [2018-09-21 18:41:57,493 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-21 18:41:57,494 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-21 18:41:57,494 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-21 18:41:57,494 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-21 18:41:57,496 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:41:57" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-21 18:41:57,650 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-21 18:41:57,650 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-21 18:41:57,650 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_float [2018-09-21 18:41:57,651 INFO L138 BoogieDeclarations]: Found implementation of procedure fmin_float [2018-09-21 18:41:57,651 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_float [2018-09-21 18:41:57,651 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-21 18:41:57,651 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-09-21 18:41:57,651 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2018-09-21 18:41:57,651 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_float [2018-09-21 18:41:57,653 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-09-21 18:41:57,653 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2018-09-21 18:41:57,654 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2018-09-21 18:41:57,654 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-09-21 18:41:57,654 INFO L130 BoogieDeclarations]: Found specification of procedure fmin_float [2018-09-21 18:41:57,654 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_float [2018-09-21 18:41:57,654 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-21 18:41:57,654 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-21 18:41:57,656 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-21 18:41:57,656 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2018-09-21 18:41:57,656 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2018-09-21 18:41:57,657 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intFLOATTYPE4 [2018-09-21 18:41:57,657 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2018-09-21 18:41:58,129 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-21 18:41:58,163 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-21 18:41:58,289 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-21 18:41:58,299 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-21 18:41:58,311 INFO L373 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-21 18:41:58,312 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 06:41:58 BoogieIcfgContainer [2018-09-21 18:41:58,312 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-21 18:41:58,313 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-21 18:41:58,314 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-21 18:41:58,317 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-21 18:41:58,318 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 06:41:57" (1/3) ... [2018-09-21 18:41:58,319 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@669425d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 06:41:58, skipping insertion in model container [2018-09-21 18:41:58,319 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:41:57" (2/3) ... [2018-09-21 18:41:58,320 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@669425d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 06:41:58, skipping insertion in model container [2018-09-21 18:41:58,320 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 06:41:58" (3/3) ... [2018-09-21 18:41:58,323 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_1232b_false-unreach-call.c [2018-09-21 18:41:58,334 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-21 18:41:58,343 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-21 18:41:58,385 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-21 18:41:58,385 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-21 18:41:58,385 INFO L382 AbstractCegarLoop]: Hoare is false [2018-09-21 18:41:58,386 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-21 18:41:58,386 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-21 18:41:58,386 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-21 18:41:58,386 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-21 18:41:58,386 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-21 18:41:58,386 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-21 18:41:58,404 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states. [2018-09-21 18:41:58,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-09-21 18:41:58,416 INFO L368 BasicCegarLoop]: Found error trace [2018-09-21 18:41:58,418 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] [2018-09-21 18:41:58,420 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-21 18:41:58,427 INFO L82 PathProgramCache]: Analyzing trace with hash 430535463, now seen corresponding path program 1 times [2018-09-21 18:41:58,433 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-21 18:41:58,434 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2018-09-21 18:41:58,444 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-21 18:41:58,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-21 18:41:58,519 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-21 18:41:58,543 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-21 18:41:58,544 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-21 18:41:58,559 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-21 18:41:58,559 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-09-21 18:41:58,563 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-09-21 18:41:58,580 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-09-21 18:41:58,581 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-09-21 18:41:58,583 INFO L87 Difference]: Start difference. First operand 58 states. Second operand 2 states. [2018-09-21 18:41:58,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-21 18:41:58,606 INFO L93 Difference]: Finished difference Result 58 states and 66 transitions. [2018-09-21 18:41:58,607 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-09-21 18:41:58,608 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 21 [2018-09-21 18:41:58,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-21 18:41:58,619 INFO L225 Difference]: With dead ends: 58 [2018-09-21 18:41:58,619 INFO L226 Difference]: Without dead ends: 54 [2018-09-21 18:41:58,621 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 [2018-09-21 18:41:58,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2018-09-21 18:41:58,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2018-09-21 18:41:58,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2018-09-21 18:41:58,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 62 transitions. [2018-09-21 18:41:58,671 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 62 transitions. Word has length 21 [2018-09-21 18:41:58,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-21 18:41:58,672 INFO L480 AbstractCegarLoop]: Abstraction has 54 states and 62 transitions. [2018-09-21 18:41:58,672 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-09-21 18:41:58,672 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 62 transitions. [2018-09-21 18:41:58,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-09-21 18:41:58,675 INFO L368 BasicCegarLoop]: Found error trace [2018-09-21 18:41:58,675 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-21 18:41:58,675 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-21 18:41:58,676 INFO L82 PathProgramCache]: Analyzing trace with hash 973147503, now seen corresponding path program 1 times [2018-09-21 18:41:58,677 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-21 18:41:58,677 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2018-09-21 18:41:58,687 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-21 18:41:58,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-21 18:41:58,742 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-21 18:41:58,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-21 18:41:58,853 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-21 18:41:58,870 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-21 18:41:58,871 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-21 18:41:58,872 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-21 18:41:58,873 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-21 18:41:58,873 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-21 18:41:58,873 INFO L87 Difference]: Start difference. First operand 54 states and 62 transitions. Second operand 4 states. [2018-09-21 18:41:59,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-21 18:41:59,015 INFO L93 Difference]: Finished difference Result 57 states and 66 transitions. [2018-09-21 18:41:59,015 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-21 18:41:59,016 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 30 [2018-09-21 18:41:59,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-21 18:41:59,019 INFO L225 Difference]: With dead ends: 57 [2018-09-21 18:41:59,019 INFO L226 Difference]: Without dead ends: 57 [2018-09-21 18:41:59,020 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-21 18:41:59,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2018-09-21 18:41:59,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2018-09-21 18:41:59,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2018-09-21 18:41:59,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 66 transitions. [2018-09-21 18:41:59,040 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 66 transitions. Word has length 30 [2018-09-21 18:41:59,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-21 18:41:59,040 INFO L480 AbstractCegarLoop]: Abstraction has 57 states and 66 transitions. [2018-09-21 18:41:59,041 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-21 18:41:59,041 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 66 transitions. [2018-09-21 18:41:59,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-09-21 18:41:59,042 INFO L368 BasicCegarLoop]: Found error trace [2018-09-21 18:41:59,045 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] [2018-09-21 18:41:59,045 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-21 18:41:59,046 INFO L82 PathProgramCache]: Analyzing trace with hash -1744180640, now seen corresponding path program 1 times [2018-09-21 18:41:59,046 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-21 18:41:59,046 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 [2018-09-21 18:41:59,053 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-21 18:41:59,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-21 18:41:59,108 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-21 18:41:59,197 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 8 [2018-09-21 18:41:59,201 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2018-09-21 18:41:59,202 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-21 18:41:59,209 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-21 18:41:59,227 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-09-21 18:41:59,228 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:21, output treesize:21 [2018-09-21 18:41:59,294 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2018-09-21 18:41:59,298 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2018-09-21 18:41:59,298 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-21 18:41:59,305 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-21 18:41:59,308 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-09-21 18:41:59,309 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:29, output treesize:9 [2018-09-21 18:41:59,799 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-21 18:41:59,799 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-21 18:41:59,813 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-21 18:41:59,814 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2018-09-21 18:41:59,814 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-09-21 18:41:59,815 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-09-21 18:41:59,815 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2018-09-21 18:41:59,816 INFO L87 Difference]: Start difference. First operand 57 states and 66 transitions. Second operand 10 states. [2018-09-21 18:42:01,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-21 18:42:01,716 INFO L93 Difference]: Finished difference Result 63 states and 75 transitions. [2018-09-21 18:42:01,717 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-09-21 18:42:01,717 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 31 [2018-09-21 18:42:01,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-21 18:42:01,720 INFO L225 Difference]: With dead ends: 63 [2018-09-21 18:42:01,720 INFO L226 Difference]: Without dead ends: 56 [2018-09-21 18:42:01,721 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=57, Invalid=215, Unknown=0, NotChecked=0, Total=272 [2018-09-21 18:42:01,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2018-09-21 18:42:01,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2018-09-21 18:42:01,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2018-09-21 18:42:01,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 63 transitions. [2018-09-21 18:42:01,730 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 63 transitions. Word has length 31 [2018-09-21 18:42:01,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-21 18:42:01,731 INFO L480 AbstractCegarLoop]: Abstraction has 56 states and 63 transitions. [2018-09-21 18:42:01,731 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-09-21 18:42:01,731 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 63 transitions. [2018-09-21 18:42:01,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2018-09-21 18:42:01,733 INFO L368 BasicCegarLoop]: Found error trace [2018-09-21 18:42:01,734 INFO L376 BasicCegarLoop]: trace histogram [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] [2018-09-21 18:42:01,734 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-21 18:42:01,734 INFO L82 PathProgramCache]: Analyzing trace with hash -1143554021, now seen corresponding path program 1 times [2018-09-21 18:42:01,735 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-21 18:42:01,735 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2018-09-21 18:42:01,746 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-21 18:42:01,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-21 18:42:01,813 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-21 18:42:01,844 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2018-09-21 18:42:01,844 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-21 18:42:01,860 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-21 18:42:01,860 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-21 18:42:01,861 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-21 18:42:01,861 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-21 18:42:01,861 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-21 18:42:01,862 INFO L87 Difference]: Start difference. First operand 56 states and 63 transitions. Second operand 4 states. [2018-09-21 18:42:01,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-21 18:42:01,888 INFO L93 Difference]: Finished difference Result 57 states and 64 transitions. [2018-09-21 18:42:01,888 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-21 18:42:01,889 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 46 [2018-09-21 18:42:01,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-21 18:42:01,891 INFO L225 Difference]: With dead ends: 57 [2018-09-21 18:42:01,892 INFO L226 Difference]: Without dead ends: 57 [2018-09-21 18:42:01,892 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-21 18:42:01,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2018-09-21 18:42:01,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2018-09-21 18:42:01,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2018-09-21 18:42:01,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 64 transitions. [2018-09-21 18:42:01,900 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 64 transitions. Word has length 46 [2018-09-21 18:42:01,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-21 18:42:01,900 INFO L480 AbstractCegarLoop]: Abstraction has 57 states and 64 transitions. [2018-09-21 18:42:01,901 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-21 18:42:01,901 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 64 transitions. [2018-09-21 18:42:01,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2018-09-21 18:42:01,902 INFO L368 BasicCegarLoop]: Found error trace [2018-09-21 18:42:01,902 INFO L376 BasicCegarLoop]: trace histogram [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] [2018-09-21 18:42:01,904 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-21 18:42:01,904 INFO L82 PathProgramCache]: Analyzing trace with hash -113422118, now seen corresponding path program 1 times [2018-09-21 18:42:01,905 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-21 18:42:01,905 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 6 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with mathsat -unsat_core_generation=3 [2018-09-21 18:42:01,909 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-21 18:42:01,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-21 18:42:01,968 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-21 18:42:02,014 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 8 [2018-09-21 18:42:02,024 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2018-09-21 18:42:02,025 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-21 18:42:02,034 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-21 18:42:02,050 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-09-21 18:42:02,050 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:21, output treesize:21 [2018-09-21 18:42:02,098 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2018-09-21 18:42:02,105 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2018-09-21 18:42:02,106 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-21 18:42:02,109 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-21 18:42:02,115 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-09-21 18:42:02,115 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:29, output treesize:9 [2018-09-21 18:42:02,296 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-09-21 18:42:02,296 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-21 18:42:02,306 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-21 18:42:02,306 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2018-09-21 18:42:02,307 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-09-21 18:42:02,307 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-09-21 18:42:02,307 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2018-09-21 18:42:02,308 INFO L87 Difference]: Start difference. First operand 57 states and 64 transitions. Second operand 10 states. [2018-09-21 18:42:03,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-21 18:42:03,245 INFO L93 Difference]: Finished difference Result 61 states and 68 transitions. [2018-09-21 18:42:03,246 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-09-21 18:42:03,246 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 47 [2018-09-21 18:42:03,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-21 18:42:03,248 INFO L225 Difference]: With dead ends: 61 [2018-09-21 18:42:03,248 INFO L226 Difference]: Without dead ends: 51 [2018-09-21 18:42:03,249 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=57, Invalid=215, Unknown=0, NotChecked=0, Total=272 [2018-09-21 18:42:03,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2018-09-21 18:42:03,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2018-09-21 18:42:03,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2018-09-21 18:42:03,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 53 transitions. [2018-09-21 18:42:03,256 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 53 transitions. Word has length 47 [2018-09-21 18:42:03,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-21 18:42:03,257 INFO L480 AbstractCegarLoop]: Abstraction has 51 states and 53 transitions. [2018-09-21 18:42:03,257 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-09-21 18:42:03,257 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 53 transitions. [2018-09-21 18:42:03,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2018-09-21 18:42:03,260 INFO L368 BasicCegarLoop]: Found error trace [2018-09-21 18:42:03,260 INFO L376 BasicCegarLoop]: trace histogram [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] [2018-09-21 18:42:03,260 INFO L423 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-21 18:42:03,260 INFO L82 PathProgramCache]: Analyzing trace with hash -1826494496, now seen corresponding path program 1 times [2018-09-21 18:42:03,261 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-21 18:42:03,261 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 7 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with mathsat -unsat_core_generation=3 [2018-09-21 18:42:03,266 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-21 18:42:03,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-21 18:42:03,325 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-21 18:42:03,409 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2018-09-21 18:42:03,409 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-21 18:42:03,423 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-21 18:42:03,423 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-09-21 18:42:03,424 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-21 18:42:03,424 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-21 18:42:03,426 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-09-21 18:42:03,426 INFO L87 Difference]: Start difference. First operand 51 states and 53 transitions. Second operand 5 states. [2018-09-21 18:42:03,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-21 18:42:03,524 INFO L93 Difference]: Finished difference Result 54 states and 55 transitions. [2018-09-21 18:42:03,528 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-09-21 18:42:03,529 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 48 [2018-09-21 18:42:03,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-21 18:42:03,530 INFO L225 Difference]: With dead ends: 54 [2018-09-21 18:42:03,530 INFO L226 Difference]: Without dead ends: 51 [2018-09-21 18:42:03,531 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 43 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-09-21 18:42:03,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2018-09-21 18:42:03,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2018-09-21 18:42:03,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2018-09-21 18:42:03,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 52 transitions. [2018-09-21 18:42:03,537 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 52 transitions. Word has length 48 [2018-09-21 18:42:03,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-21 18:42:03,538 INFO L480 AbstractCegarLoop]: Abstraction has 51 states and 52 transitions. [2018-09-21 18:42:03,538 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-21 18:42:03,538 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 52 transitions. [2018-09-21 18:42:03,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2018-09-21 18:42:03,540 INFO L368 BasicCegarLoop]: Found error trace [2018-09-21 18:42:03,540 INFO L376 BasicCegarLoop]: trace histogram [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] [2018-09-21 18:42:03,541 INFO L423 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-21 18:42:03,541 INFO L82 PathProgramCache]: Analyzing trace with hash 1659126174, now seen corresponding path program 1 times [2018-09-21 18:42:03,541 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-21 18:42:03,542 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 8 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with mathsat -unsat_core_generation=3 [2018-09-21 18:42:03,551 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-21 18:42:03,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-21 18:42:03,618 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-21 18:42:03,724 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2018-09-21 18:42:03,725 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-21 18:42:03,735 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-21 18:42:03,735 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-09-21 18:42:03,736 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-09-21 18:42:03,736 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-09-21 18:42:03,736 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-09-21 18:42:03,736 INFO L87 Difference]: Start difference. First operand 51 states and 52 transitions. Second operand 8 states. [2018-09-21 18:42:04,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-21 18:42:04,137 INFO L93 Difference]: Finished difference Result 51 states and 51 transitions. [2018-09-21 18:42:04,138 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-09-21 18:42:04,138 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 48 [2018-09-21 18:42:04,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-21 18:42:04,139 INFO L225 Difference]: With dead ends: 51 [2018-09-21 18:42:04,140 INFO L226 Difference]: Without dead ends: 51 [2018-09-21 18:42:04,141 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2018-09-21 18:42:04,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2018-09-21 18:42:04,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2018-09-21 18:42:04,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2018-09-21 18:42:04,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 51 transitions. [2018-09-21 18:42:04,146 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 51 transitions. Word has length 48 [2018-09-21 18:42:04,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-21 18:42:04,147 INFO L480 AbstractCegarLoop]: Abstraction has 51 states and 51 transitions. [2018-09-21 18:42:04,147 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-09-21 18:42:04,147 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 51 transitions. [2018-09-21 18:42:04,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2018-09-21 18:42:04,150 INFO L368 BasicCegarLoop]: Found error trace [2018-09-21 18:42:04,150 INFO L376 BasicCegarLoop]: trace histogram [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] [2018-09-21 18:42:04,150 INFO L423 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-21 18:42:04,151 INFO L82 PathProgramCache]: Analyzing trace with hash -1902635068, now seen corresponding path program 1 times [2018-09-21 18:42:04,151 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-21 18:42:04,151 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 9 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with mathsat -unsat_core_generation=3 [2018-09-21 18:42:04,158 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-21 18:42:04,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-09-21 18:42:04,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-09-21 18:42:04,411 INFO L443 BasicCegarLoop]: Counterexample might be feasible [2018-09-21 18:42:04,483 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.09 06:42:04 BoogieIcfgContainer [2018-09-21 18:42:04,483 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-21 18:42:04,484 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-09-21 18:42:04,484 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-09-21 18:42:04,485 INFO L276 PluginConnector]: Witness Printer initialized [2018-09-21 18:42:04,485 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 06:41:58" (3/4) ... [2018-09-21 18:42:04,490 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2018-09-21 18:42:04,657 INFO L145 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2018-09-21 18:42:04,660 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-09-21 18:42:04,662 INFO L168 Benchmark]: Toolchain (without parser) took 7538.41 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 140.5 MB). Free memory was 951.8 MB in the beginning and 840.3 MB in the end (delta: 111.5 MB). Peak memory consumption was 252.0 MB. Max. memory is 11.5 GB. [2018-09-21 18:42:04,670 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-09-21 18:42:04,671 INFO L168 Benchmark]: CACSL2BoogieTranslator took 314.71 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. [2018-09-21 18:42:04,672 INFO L168 Benchmark]: Boogie Preprocessor took 49.93 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. [2018-09-21 18:42:04,674 INFO L168 Benchmark]: RCFGBuilder took 818.47 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 140.5 MB). Free memory was 935.7 MB in the beginning and 1.1 GB in the end (delta: -167.1 MB). Peak memory consumption was 22.0 MB. Max. memory is 11.5 GB. [2018-09-21 18:42:04,674 INFO L168 Benchmark]: TraceAbstraction took 6170.07 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 840.3 MB in the end (delta: 262.6 MB). Peak memory consumption was 262.6 MB. Max. memory is 11.5 GB. [2018-09-21 18:42:04,675 INFO L168 Benchmark]: Witness Printer took 176.49 ms. Allocated memory is still 1.2 GB. Free memory is still 840.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-09-21 18:42:04,685 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 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 314.71 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 49.93 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 818.47 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 140.5 MB). Free memory was 935.7 MB in the beginning and 1.1 GB in the end (delta: -167.1 MB). Peak memory consumption was 22.0 MB. Max. memory is 11.5 GB. * TraceAbstraction took 6170.07 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 840.3 MB in the end (delta: 262.6 MB). Peak memory consumption was 262.6 MB. Max. memory is 11.5 GB. * Witness Printer took 176.49 ms. Allocated memory is still 1.2 GB. Free memory is still 840.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 70]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L64] float x = -0.0f; [L65] float y = 0.0f; VAL [x=0.0, y=0.0] [L66] CALL, EXPR fmin_float(x, y) VAL [\old(x)=0.0, \old(y)=0.0] [L36] CALL, EXPR __fpclassify_float(x) VAL [\old(x)=0.0] [L13] __uint32_t w; VAL [\old(x)=0.0, x=0.0] [L16] FCALL ieee_float_shape_type gf_u; VAL [\old(x)=0.0, gf_u={2:0}, x=0.0] [L17] FCALL gf_u.value = (x) VAL [\old(x)=0.0, gf_u={2:0}, x=0.0] [L18] EXPR, FCALL gf_u.word VAL [\old(x)=0.0, gf_u={2:0}, gf_u.word=-2147483648, x=0.0] [L18] (w) = gf_u.word VAL [\old(x)=0.0, gf_u={2:0}, gf_u.word=-2147483648, w=2147483648, x=0.0] [L18] FCALL (w) = gf_u.word VAL [(w) = gf_u.word=0.0, \old(x)=0.0, gf_u={2:0}, gf_u.word=-2147483648, w=2147483648, x=0.0] [L19] COND FALSE !(0) VAL [\old(x)=0.0, w=2147483648, x=0.0] [L21] COND TRUE w == 0x00000000 || w == 0x80000000 [L22] RET return 2; VAL [\old(x)=0.0, \result=2, w=2147483648, x=0.0] [L36] EXPR __fpclassify_float(x) VAL [\old(x)=0.0, \old(y)=0.0, __fpclassify_float(x)=2, x=0.0, y=0.0] [L36] COND FALSE !(__fpclassify_float(x) == 0) [L38] CALL, EXPR __fpclassify_float(y) VAL [\old(x)=0.0] [L13] __uint32_t w; VAL [\old(x)=0.0, x=0.0] [L16] FCALL ieee_float_shape_type gf_u; VAL [\old(x)=0.0, gf_u={2:0}, x=0.0] [L17] FCALL gf_u.value = (x) VAL [\old(x)=0.0, gf_u={2:0}, x=0.0] [L18] EXPR, FCALL gf_u.word VAL [\old(x)=0.0, gf_u={2:0}, gf_u.word=0, x=0.0] [L18] (w) = gf_u.word VAL [\old(x)=0.0, gf_u={2:0}, gf_u.word=0, w=0, x=0.0] [L18] FCALL (w) = gf_u.word VAL [(w) = gf_u.word=0.0, \old(x)=0.0, gf_u={2:0}, gf_u.word=0, w=0, x=0.0] [L19] COND FALSE !(0) VAL [\old(x)=0.0, w=0, x=0.0] [L21] COND TRUE w == 0x00000000 || w == 0x80000000 [L22] RET return 2; VAL [\old(x)=0.0, \result=2, w=0, x=0.0] [L38] EXPR __fpclassify_float(y) VAL [\old(x)=0.0, \old(y)=0.0, __fpclassify_float(y)=2, x=0.0, y=0.0] [L38] COND FALSE !(__fpclassify_float(y) == 0) [L41] COND FALSE, EXPR !(x < y ? x : y) [L41] EXPR x < y ? x : y VAL [\old(x)=0.0, \old(y)=0.0, x=0.0, x < y ? x : y=0.0, y=0.0] [L41] RET return x < y ? x : y; [L66] EXPR fmin_float(x, y) VAL [fmin_float(x, y)=0.0, x=0.0, y=0.0] [L66] float res = fmin_float(x, y); [L69] EXPR res == -0.0f && __signbit_float(res) == 1 VAL [res=0.0, res == -0.0f && __signbit_float(res) == 1=1, x=0.0, y=0.0] [L69] COND TRUE, EXPR res == -0.0f && __signbit_float(res) == 1 VAL [res=0.0, res == -0.0f && __signbit_float(res) == 1=1, x=0.0, y=0.0] [L69] CALL, EXPR __signbit_float(res) VAL [\old(x)=0.0] [L45] __uint32_t w; VAL [\old(x)=0.0, x=0.0] [L48] FCALL ieee_float_shape_type gf_u; VAL [\old(x)=0.0, gf_u={2:0}, x=0.0] [L49] FCALL gf_u.value = (x) VAL [\old(x)=0.0, gf_u={2:0}, x=0.0] [L50] EXPR, FCALL gf_u.word VAL [\old(x)=0.0, gf_u={2:0}, gf_u.word=0, x=0.0] [L50] (w) = gf_u.word VAL [\old(x)=0.0, gf_u={2:0}, gf_u.word=0, w=0, x=0.0] [L50] FCALL (w) = gf_u.word VAL [(w) = gf_u.word=0.0, \old(x)=0.0, gf_u={2:0}, gf_u.word=0, w=0, x=0.0] [L51] COND FALSE !(0) VAL [\old(x)=0.0, w=0, x=0.0] [L53] RET return (w & 0x80000000) != 0; VAL [\old(x)=0.0, \result=0, w=0, x=0.0] [L69] EXPR __signbit_float(res) VAL [__signbit_float(res)=0, res=0.0, res == -0.0f && __signbit_float(res) == 1=1, x=0.0, y=0.0] [L69] EXPR res == -0.0f && __signbit_float(res) == 1 VAL [__signbit_float(res)=0, res=0.0, res == -0.0f && __signbit_float(res) == 1=0, x=0.0, y=0.0] [L69] COND TRUE !(res == -0.0f && __signbit_float(res) == 1) [L70] __VERIFIER_error() VAL [res=0.0, x=0.0, y=0.0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 58 locations, 1 error locations. UNSAFE Result, 6.1s OverallTime, 8 OverallIterations, 2 TraceHistogramMax, 3.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 380 SDtfs, 122 SDslu, 1261 SDs, 0 SdLazy, 423 SolverSat, 10 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 284 GetRequests, 235 SyntacticMatches, 1 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 2.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=58occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 7 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.4s InterpolantComputationTime, 335 NumberOfCodeBlocks, 335 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 264 ConstructedInterpolants, 12 QuantifiedInterpolants, 27895 SizeOfPredicates, 23 NumberOfNonLiveVariables, 599 ConjunctsInSsa, 43 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 56/56 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...