/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/Ultimate.py --spec ../../../trunk/examples/svcomp/ReachSafety.prp --file ../../../trunk/examples/svcomp/floats-esbmc-regression/Double_div_true-unreach-call.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 40ef5092 Calling Ultimate with: java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/floats-esbmc-regression/Double_div_true-unreach-call.i -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 8571d6e044ba86c3b82c24f6ff451bf497f2aedf ......................................................................................................................................................................................................................................................... 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/floats-esbmc-regression/Double_div_true-unreach-call.i -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 8571d6e044ba86c3b82c24f6ff451bf497f2aedf ............................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000)Received EOF on stdin. No stderr output. --- Real Ultimate output --- This is Ultimate 0.1.23-40ef509 [2018-09-20 14:24:02,136 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-20 14:24:02,138 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-20 14:24:02,152 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-20 14:24:02,152 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-20 14:24:02,154 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-20 14:24:02,155 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-20 14:24:02,158 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-20 14:24:02,160 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-20 14:24:02,161 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-20 14:24:02,162 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-20 14:24:02,163 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-20 14:24:02,164 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-20 14:24:02,165 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-20 14:24:02,166 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-20 14:24:02,167 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-20 14:24:02,168 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-20 14:24:02,170 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-20 14:24:02,172 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-20 14:24:02,174 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-20 14:24:02,175 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-20 14:24:02,177 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-20 14:24:02,179 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-20 14:24:02,180 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-20 14:24:02,180 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-20 14:24:02,181 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-20 14:24:02,183 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-20 14:24:02,183 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-20 14:24:02,184 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-20 14:24:02,186 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-20 14:24:02,186 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-20 14:24:02,187 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-20 14:24:02,187 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-20 14:24:02,187 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-20 14:24:02,188 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-20 14:24:02,189 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-20 14:24:02,190 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-09-20 14:24:02,206 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-20 14:24:02,206 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-20 14:24:02,207 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-20 14:24:02,207 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-09-20 14:24:02,208 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-09-20 14:24:02,208 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-09-20 14:24:02,208 INFO L133 SettingsManager]: * Use SBE=true [2018-09-20 14:24:02,209 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-20 14:24:02,209 INFO L133 SettingsManager]: * sizeof long=4 [2018-09-20 14:24:02,209 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-20 14:24:02,209 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-09-20 14:24:02,209 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-20 14:24:02,210 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-20 14:24:02,210 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-20 14:24:02,210 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-20 14:24:02,210 INFO L133 SettingsManager]: * sizeof long double=12 [2018-09-20 14:24:02,210 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-20 14:24:02,212 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-20 14:24:02,212 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-20 14:24:02,212 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-20 14:24:02,213 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-20 14:24:02,213 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-20 14:24:02,213 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-20 14:24:02,213 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-20 14:24:02,213 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-20 14:24:02,214 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-20 14:24:02,214 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-09-20 14:24:02,214 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-20 14:24:02,214 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-20 14:24:02,214 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 -> 8571d6e044ba86c3b82c24f6ff451bf497f2aedf [2018-09-20 14:24:02,282 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-20 14:24:02,304 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-20 14:24:02,308 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-20 14:24:02,310 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-20 14:24:02,311 INFO L276 PluginConnector]: CDTParser initialized [2018-09-20 14:24:02,312 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/floats-esbmc-regression/Double_div_true-unreach-call.i [2018-09-20 14:24:02,686 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d79b90663/5eda0bfa4c2d4bb892fc84452eae207f/FLAGf6aae1ca5 [2018-09-20 14:24:02,877 INFO L277 CDTParser]: Found 1 translation units. [2018-09-20 14:24:02,878 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/floats-esbmc-regression/Double_div_true-unreach-call.i [2018-09-20 14:24:02,886 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d79b90663/5eda0bfa4c2d4bb892fc84452eae207f/FLAGf6aae1ca5 [2018-09-20 14:24:02,905 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d79b90663/5eda0bfa4c2d4bb892fc84452eae207f [2018-09-20 14:24:02,910 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-20 14:24:02,914 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-20 14:24:02,915 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-20 14:24:02,915 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-20 14:24:02,923 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-20 14:24:02,924 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 02:24:02" (1/1) ... [2018-09-20 14:24:02,928 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@176bce71 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 02:24:02, skipping insertion in model container [2018-09-20 14:24:02,929 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 02:24:02" (1/1) ... [2018-09-20 14:24:02,943 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-20 14:24:03,186 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-20 14:24:03,210 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-20 14:24:03,217 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-20 14:24:03,236 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 02:24:03 WrapperNode [2018-09-20 14:24:03,236 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-20 14:24:03,237 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-20 14:24:03,237 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-20 14:24:03,237 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-20 14:24:03,254 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 02:24:03" (1/1) ... [2018-09-20 14:24:03,255 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 02:24:03" (1/1) ... [2018-09-20 14:24:03,262 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 02:24:03" (1/1) ... [2018-09-20 14:24:03,262 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 02:24:03" (1/1) ... [2018-09-20 14:24:03,265 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 02:24:03" (1/1) ... [2018-09-20 14:24:03,274 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 02:24:03" (1/1) ... [2018-09-20 14:24:03,275 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 02:24:03" (1/1) ... [2018-09-20 14:24:03,277 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-20 14:24:03,277 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-20 14:24:03,278 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-20 14:24:03,278 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-20 14:24:03,282 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 02:24:03" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-20 14:24:03,363 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-20 14:24:03,363 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-20 14:24:03,364 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-09-20 14:24:03,364 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-20 14:24:03,364 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-09-20 14:24:03,364 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-09-20 14:24:03,367 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-20 14:24:03,367 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-20 14:24:03,368 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-20 14:24:03,683 INFO L365 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-20 14:24:03,684 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 02:24:03 BoogieIcfgContainer [2018-09-20 14:24:03,684 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-20 14:24:03,685 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-20 14:24:03,685 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-20 14:24:03,689 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-20 14:24:03,689 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.09 02:24:02" (1/3) ... [2018-09-20 14:24:03,690 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e47160a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 02:24:03, skipping insertion in model container [2018-09-20 14:24:03,690 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 02:24:03" (2/3) ... [2018-09-20 14:24:03,691 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e47160a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 02:24:03, skipping insertion in model container [2018-09-20 14:24:03,691 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 02:24:03" (3/3) ... [2018-09-20 14:24:03,693 INFO L112 eAbstractionObserver]: Analyzing ICFG Double_div_true-unreach-call.i [2018-09-20 14:24:03,702 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-20 14:24:03,709 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-20 14:24:03,761 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-20 14:24:03,762 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-20 14:24:03,762 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-20 14:24:03,763 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-20 14:24:03,763 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-20 14:24:03,763 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-20 14:24:03,763 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-20 14:24:03,763 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-20 14:24:03,763 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-20 14:24:03,783 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2018-09-20 14:24:03,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-09-20 14:24:03,789 INFO L368 BasicCegarLoop]: Found error trace [2018-09-20 14:24:03,790 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-20 14:24:03,793 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-20 14:24:03,799 INFO L82 PathProgramCache]: Analyzing trace with hash -1871509567, now seen corresponding path program 1 times [2018-09-20 14:24:03,801 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-20 14:24:03,802 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-20 14:24:03,860 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-20 14:24:03,860 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-20 14:24:03,860 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-20 14:24:03,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-20 14:24:03,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-20 14:24:03,928 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-20 14:24:03,928 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-09-20 14:24:03,933 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-09-20 14:24:03,950 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-09-20 14:24:03,951 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-09-20 14:24:03,954 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 2 states. [2018-09-20 14:24:03,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-20 14:24:03,980 INFO L93 Difference]: Finished difference Result 31 states and 34 transitions. [2018-09-20 14:24:03,980 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-09-20 14:24:03,982 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2018-09-20 14:24:03,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-20 14:24:03,992 INFO L225 Difference]: With dead ends: 31 [2018-09-20 14:24:03,992 INFO L226 Difference]: Without dead ends: 12 [2018-09-20 14:24:03,996 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-09-20 14:24:04,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2018-09-20 14:24:04,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2018-09-20 14:24:04,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2018-09-20 14:24:04,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2018-09-20 14:24:04,040 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 10 [2018-09-20 14:24:04,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-20 14:24:04,040 INFO L480 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2018-09-20 14:24:04,040 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-09-20 14:24:04,041 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2018-09-20 14:24:04,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-09-20 14:24:04,041 INFO L368 BasicCegarLoop]: Found error trace [2018-09-20 14:24:04,042 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-20 14:24:04,042 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-20 14:24:04,042 INFO L82 PathProgramCache]: Analyzing trace with hash 1861991801, now seen corresponding path program 1 times [2018-09-20 14:24:04,042 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-20 14:24:04,043 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-20 14:24:04,044 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-20 14:24:04,044 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-20 14:24:04,044 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-20 14:24:04,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-09-20 14:24:04,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-09-20 14:24:04,085 INFO L443 BasicCegarLoop]: Counterexample might be feasible [2018-09-20 14:24:04,111 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.09 02:24:04 BoogieIcfgContainer [2018-09-20 14:24:04,111 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-20 14:24:04,111 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-09-20 14:24:04,112 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-09-20 14:24:04,112 INFO L276 PluginConnector]: Witness Printer initialized [2018-09-20 14:24:04,112 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 02:24:03" (3/4) ... [2018-09-20 14:24:04,117 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-09-20 14:24:04,117 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-09-20 14:24:04,118 INFO L168 Benchmark]: Toolchain (without parser) took 1207.66 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 152.0 MB). Free memory was 951.8 MB in the beginning and 1.1 GB in the end (delta: -159.7 MB). There was no memory consumed. Max. memory is 11.5 GB. [2018-09-20 14:24:04,121 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-09-20 14:24:04,121 INFO L168 Benchmark]: CACSL2BoogieTranslator took 321.43 ms. Allocated memory is still 1.0 GB. Free memory was 951.8 MB in the beginning and 941.1 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-09-20 14:24:04,123 INFO L168 Benchmark]: Boogie Preprocessor took 40.07 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. [2018-09-20 14:24:04,123 INFO L168 Benchmark]: RCFGBuilder took 406.78 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 152.0 MB). Free memory was 941.1 MB in the beginning and 1.1 GB in the end (delta: -195.4 MB). Peak memory consumption was 26.6 MB. Max. memory is 11.5 GB. [2018-09-20 14:24:04,124 INFO L168 Benchmark]: TraceAbstraction took 425.78 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: 25.0 MB). Peak memory consumption was 25.0 MB. Max. memory is 11.5 GB. [2018-09-20 14:24:04,125 INFO L168 Benchmark]: Witness Printer took 6.03 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-09-20 14:24:04,130 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 321.43 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 40.07 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 406.78 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 152.0 MB). Free memory was 941.1 MB in the beginning and 1.1 GB in the end (delta: -195.4 MB). Peak memory consumption was 26.6 MB. Max. memory is 11.5 GB. * TraceAbstraction took 425.78 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: 25.0 MB). Peak memory consumption was 25.0 MB. Max. memory is 11.5 GB. * Witness Printer took 6.03 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: 2]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 12, overapproximation of someBinaryArithmeticDOUBLEoperation at line 10. Possible FailurePath: [L9] double x = 1.0; [L10] double x1 = x/2.5; VAL [x=1] [L12] COND FALSE !(x1 != x) VAL [x=1] [L18] CALL __VERIFIER_assert(x == 0) VAL [\old(cond)=0] [L2] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L2] __VERIFIER_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 19 locations, 1 error locations. UNSAFE Result, 0.3s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 19 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=19occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 21 NumberOfCodeBlocks, 21 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 9 ConstructedInterpolants, 0 QuantifiedInterpolants, 81 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.23-40ef509 [2018-09-20 14:24:06,573 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-20 14:24:06,575 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-20 14:24:06,588 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-20 14:24:06,588 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-20 14:24:06,589 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-20 14:24:06,590 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-20 14:24:06,592 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-20 14:24:06,594 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-20 14:24:06,595 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-20 14:24:06,596 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-20 14:24:06,597 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-20 14:24:06,598 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-20 14:24:06,599 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-20 14:24:06,600 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-20 14:24:06,601 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-20 14:24:06,602 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-20 14:24:06,603 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-20 14:24:06,606 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-20 14:24:06,607 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-20 14:24:06,609 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-20 14:24:06,610 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-20 14:24:06,612 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-20 14:24:06,613 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-20 14:24:06,613 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-20 14:24:06,614 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-20 14:24:06,618 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-20 14:24:06,620 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-20 14:24:06,620 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-20 14:24:06,625 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-20 14:24:06,625 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-20 14:24:06,626 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-20 14:24:06,626 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-20 14:24:06,627 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-20 14:24:06,630 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-20 14:24:06,631 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-20 14:24:06,631 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2018-09-20 14:24:06,666 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-20 14:24:06,667 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-20 14:24:06,668 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-20 14:24:06,668 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-09-20 14:24:06,669 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-09-20 14:24:06,669 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-09-20 14:24:06,671 INFO L133 SettingsManager]: * Use SBE=true [2018-09-20 14:24:06,671 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-20 14:24:06,672 INFO L133 SettingsManager]: * sizeof long=4 [2018-09-20 14:24:06,672 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-09-20 14:24:06,672 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-20 14:24:06,672 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-20 14:24:06,672 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-20 14:24:06,673 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-20 14:24:06,673 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-09-20 14:24:06,673 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-09-20 14:24:06,673 INFO L133 SettingsManager]: * sizeof long double=12 [2018-09-20 14:24:06,674 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-20 14:24:06,674 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-20 14:24:06,674 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-20 14:24:06,674 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-20 14:24:06,674 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-20 14:24:06,676 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-20 14:24:06,676 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-20 14:24:06,676 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-20 14:24:06,677 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-20 14:24:06,677 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-20 14:24:06,677 INFO L133 SettingsManager]: * Trace refinement strategy=WOLF [2018-09-20 14:24:06,677 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-20 14:24:06,677 INFO L133 SettingsManager]: * Command for external solver=cvc4nyu --tear-down-incremental --rewrite-divk --print-success --lang smt [2018-09-20 14:24:06,677 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-09-20 14:24:06,678 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 -> 8571d6e044ba86c3b82c24f6ff451bf497f2aedf [2018-09-20 14:24:06,757 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-20 14:24:06,776 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-20 14:24:06,781 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-20 14:24:06,783 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-20 14:24:06,783 INFO L276 PluginConnector]: CDTParser initialized [2018-09-20 14:24:06,784 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/floats-esbmc-regression/Double_div_true-unreach-call.i [2018-09-20 14:24:07,146 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2abbc5708/7967133cab724f5caeab1902598f9952/FLAG1cb853aa0 [2018-09-20 14:24:07,281 INFO L277 CDTParser]: Found 1 translation units. [2018-09-20 14:24:07,282 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/floats-esbmc-regression/Double_div_true-unreach-call.i [2018-09-20 14:24:07,287 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2abbc5708/7967133cab724f5caeab1902598f9952/FLAG1cb853aa0 [2018-09-20 14:24:07,306 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2abbc5708/7967133cab724f5caeab1902598f9952 [2018-09-20 14:24:07,311 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-20 14:24:07,314 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-20 14:24:07,316 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-20 14:24:07,316 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-20 14:24:07,324 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-20 14:24:07,325 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 02:24:07" (1/1) ... [2018-09-20 14:24:07,328 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@57b241fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 02:24:07, skipping insertion in model container [2018-09-20 14:24:07,329 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 02:24:07" (1/1) ... [2018-09-20 14:24:07,342 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-20 14:24:07,566 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-20 14:24:07,594 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-20 14:24:07,603 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-20 14:24:07,624 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 02:24:07 WrapperNode [2018-09-20 14:24:07,624 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-20 14:24:07,625 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-20 14:24:07,625 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-20 14:24:07,625 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-20 14:24:07,641 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 02:24:07" (1/1) ... [2018-09-20 14:24:07,642 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 02:24:07" (1/1) ... [2018-09-20 14:24:07,652 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 02:24:07" (1/1) ... [2018-09-20 14:24:07,652 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 02:24:07" (1/1) ... [2018-09-20 14:24:07,656 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 02:24:07" (1/1) ... [2018-09-20 14:24:07,663 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 02:24:07" (1/1) ... [2018-09-20 14:24:07,665 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 02:24:07" (1/1) ... [2018-09-20 14:24:07,668 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-20 14:24:07,669 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-20 14:24:07,669 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-20 14:24:07,669 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-20 14:24:07,670 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 02:24:07" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-20 14:24:07,735 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-20 14:24:07,735 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-20 14:24:07,736 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-09-20 14:24:07,736 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-20 14:24:07,736 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-09-20 14:24:07,736 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-09-20 14:24:07,736 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-20 14:24:07,736 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-20 14:24:07,736 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-20 14:24:08,916 INFO L365 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-20 14:24:08,917 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 02:24:08 BoogieIcfgContainer [2018-09-20 14:24:08,917 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-20 14:24:08,919 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-20 14:24:08,919 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-20 14:24:08,923 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-20 14:24:08,923 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.09 02:24:07" (1/3) ... [2018-09-20 14:24:08,924 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ce274c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 02:24:08, skipping insertion in model container [2018-09-20 14:24:08,924 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 02:24:07" (2/3) ... [2018-09-20 14:24:08,925 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ce274c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 02:24:08, skipping insertion in model container [2018-09-20 14:24:08,925 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 02:24:08" (3/3) ... [2018-09-20 14:24:08,931 INFO L112 eAbstractionObserver]: Analyzing ICFG Double_div_true-unreach-call.i [2018-09-20 14:24:08,942 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-20 14:24:08,950 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-20 14:24:09,001 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-20 14:24:09,002 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-20 14:24:09,002 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-20 14:24:09,002 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-20 14:24:09,002 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-20 14:24:09,002 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-20 14:24:09,003 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-20 14:24:09,003 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-20 14:24:09,003 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-20 14:24:09,025 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2018-09-20 14:24:09,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-09-20 14:24:09,032 INFO L368 BasicCegarLoop]: Found error trace [2018-09-20 14:24:09,033 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-20 14:24:09,035 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-20 14:24:09,041 INFO L82 PathProgramCache]: Analyzing trace with hash -1871509567, now seen corresponding path program 1 times [2018-09-20 14:24:09,046 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-20 14:24:09,046 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2018-09-20 14:24:09,062 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-20 14:24:09,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-20 14:24:09,369 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-20 14:24:09,386 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-20 14:24:09,386 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-20 14:24:09,403 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-20 14:24:09,403 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-09-20 14:24:09,407 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-09-20 14:24:09,420 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-09-20 14:24:09,420 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-09-20 14:24:09,423 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 2 states. [2018-09-20 14:24:09,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-20 14:24:09,445 INFO L93 Difference]: Finished difference Result 31 states and 34 transitions. [2018-09-20 14:24:09,445 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-09-20 14:24:09,447 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2018-09-20 14:24:09,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-20 14:24:09,456 INFO L225 Difference]: With dead ends: 31 [2018-09-20 14:24:09,457 INFO L226 Difference]: Without dead ends: 12 [2018-09-20 14:24:09,461 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-09-20 14:24:09,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2018-09-20 14:24:09,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2018-09-20 14:24:09,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2018-09-20 14:24:09,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2018-09-20 14:24:09,501 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 10 [2018-09-20 14:24:09,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-20 14:24:09,501 INFO L480 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2018-09-20 14:24:09,501 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-09-20 14:24:09,501 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2018-09-20 14:24:09,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-09-20 14:24:09,502 INFO L368 BasicCegarLoop]: Found error trace [2018-09-20 14:24:09,502 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-20 14:24:09,503 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-20 14:24:09,503 INFO L82 PathProgramCache]: Analyzing trace with hash 1861991801, now seen corresponding path program 1 times [2018-09-20 14:24:09,503 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-20 14:24:09,503 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2018-09-20 14:24:09,509 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-20 14:24:09,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-20 14:24:09,717 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-20 14:24:12,892 WARN L178 SmtUtils]: Spent 3.15 s on a formula simplification that was a NOOP. DAG size: 11 [2018-09-20 14:24:12,903 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-20 14:24:12,903 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-20 14:24:12,916 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-20 14:24:12,916 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-09-20 14:24:12,918 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-20 14:24:12,919 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-20 14:24:12,919 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-20 14:24:12,919 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand 3 states. [2018-09-20 14:24:15,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-20 14:24:15,022 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2018-09-20 14:24:15,848 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-20 14:24:15,848 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2018-09-20 14:24:15,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-20 14:24:15,849 INFO L225 Difference]: With dead ends: 19 [2018-09-20 14:24:15,850 INFO L226 Difference]: Without dead ends: 14 [2018-09-20 14:24:15,851 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-20 14:24:15,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2018-09-20 14:24:15,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2018-09-20 14:24:15,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2018-09-20 14:24:15,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2018-09-20 14:24:15,856 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 11 [2018-09-20 14:24:15,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-20 14:24:15,857 INFO L480 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2018-09-20 14:24:15,857 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-20 14:24:15,857 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2018-09-20 14:24:15,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-09-20 14:24:15,858 INFO L368 BasicCegarLoop]: Found error trace [2018-09-20 14:24:15,858 INFO L376 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-20 14:24:15,858 INFO L423 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-20 14:24:15,860 INFO L82 PathProgramCache]: Analyzing trace with hash -661808769, now seen corresponding path program 1 times [2018-09-20 14:24:15,860 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-20 14:24:15,860 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2018-09-20 14:24:15,868 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-20 14:24:16,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-20 14:24:16,281 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-20 14:24:18,569 WARN L521 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2018-09-20 14:24:18,571 FATAL L265 ToolchainWalker]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000)Received EOF on stdin. No stderr output. at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:208) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseCheckSatResult(Executor.java:225) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.checkSat(Scriptor.java:154) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.WrapperScript.checkSat(WrapperScript.java:116) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.managedscript.ManagedScript.checkSat(ManagedScript.java:140) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.MonolithicImplicationChecker.checkImplication(MonolithicImplicationChecker.java:84) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.predicates.PredicateUnifier$PredicateComparison.compare(PredicateUnifier.java:810) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.predicates.PredicateUnifier$PredicateComparison.(PredicateUnifier.java:732) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:338) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:298) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp$UnifyPostprocessor.postprocess(TraceCheckSpWp.java:575) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:439) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.IterativePredicateTransformer.computeStrongestPostconditionSequence(IterativePredicateTransformer.java:200) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:286) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:162) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.constructForwardBackward(TraceCheckConstructor.java:224) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.constructTraceCheck(TraceCheckConstructor.java:188) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.get(TraceCheckConstructor.java:165) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.MultiTrackRefinementStrategy.getTraceCheck(MultiTrackRefinementStrategy.java:236) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.checkFeasibility(BaseRefinementStrategy.java:224) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.executeStrategy(BaseRefinementStrategy.java:198) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:70) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:430) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:434) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:375) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:313) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:124) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: EOF at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1427) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:630) at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:419) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:205) ... 39 more [2018-09-20 14:24:18,576 INFO L168 Benchmark]: Toolchain (without parser) took 11264.23 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 134.7 MB). Free memory was 954.5 MB in the beginning and 1.1 GB in the end (delta: -116.2 MB). Peak memory consumption was 18.5 MB. Max. memory is 11.5 GB. [2018-09-20 14:24:18,577 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-09-20 14:24:18,578 INFO L168 Benchmark]: CACSL2BoogieTranslator took 308.60 ms. Allocated memory is still 1.0 GB. Free memory was 954.5 MB in the beginning and 943.8 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-09-20 14:24:18,579 INFO L168 Benchmark]: Boogie Preprocessor took 43.60 ms. Allocated memory is still 1.0 GB. Free memory is still 943.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-09-20 14:24:18,579 INFO L168 Benchmark]: RCFGBuilder took 1248.09 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 134.7 MB). Free memory was 943.8 MB in the beginning and 1.1 GB in the end (delta: -172.7 MB). Peak memory consumption was 27.2 MB. Max. memory is 11.5 GB. [2018-09-20 14:24:18,580 INFO L168 Benchmark]: TraceAbstraction took 9656.08 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: 45.7 MB). Peak memory consumption was 45.7 MB. Max. memory is 11.5 GB. [2018-09-20 14:24:18,593 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 308.60 ms. Allocated memory is still 1.0 GB. Free memory was 954.5 MB in the beginning and 943.8 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 43.60 ms. Allocated memory is still 1.0 GB. Free memory is still 943.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 1248.09 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 134.7 MB). Free memory was 943.8 MB in the beginning and 1.1 GB in the end (delta: -172.7 MB). Peak memory consumption was 27.2 MB. Max. memory is 11.5 GB. * TraceAbstraction took 9656.08 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: 45.7 MB). Peak memory consumption was 45.7 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000)Received EOF on stdin. No stderr output. de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000)Received EOF on stdin. No stderr output.: de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:208) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...