/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/Ultimate.py --spec ../../../trunk/examples/svcomp/ReachSafety.prp --file ../../../trunk/examples/svcomp/floats-esbmc-regression/Float_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/Float_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 c9c4c4712c0b03f250e94d62f797a284bfa7b46f ......................................................................................................................................................................................................................................................... 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/Float_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 c9c4c4712c0b03f250e94d62f797a284bfa7b46f ............................................................................................................................................................................................................................................................................................................................................................................................................................. 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 14:24:17,133 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-20 14:24:17,137 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-20 14:24:17,151 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-20 14:24:17,151 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-20 14:24:17,152 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-20 14:24:17,154 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-20 14:24:17,156 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-20 14:24:17,158 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-20 14:24:17,158 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-20 14:24:17,159 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-20 14:24:17,160 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-20 14:24:17,161 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-20 14:24:17,162 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-20 14:24:17,163 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-20 14:24:17,164 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-20 14:24:17,165 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-20 14:24:17,168 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-20 14:24:17,173 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-20 14:24:17,177 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-20 14:24:17,183 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-20 14:24:17,185 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-20 14:24:17,188 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-20 14:24:17,190 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-20 14:24:17,191 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-20 14:24:17,192 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-20 14:24:17,196 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-20 14:24:17,197 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-20 14:24:17,198 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-20 14:24:17,202 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-20 14:24:17,202 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-20 14:24:17,203 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-20 14:24:17,203 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-20 14:24:17,205 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-20 14:24:17,206 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-20 14:24:17,208 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-20 14:24:17,209 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-09-20 14:24:17,234 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-20 14:24:17,234 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-20 14:24:17,235 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-20 14:24:17,235 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-09-20 14:24:17,236 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-09-20 14:24:17,236 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-09-20 14:24:17,237 INFO L133 SettingsManager]: * Use SBE=true [2018-09-20 14:24:17,237 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-20 14:24:17,237 INFO L133 SettingsManager]: * sizeof long=4 [2018-09-20 14:24:17,237 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-20 14:24:17,237 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-09-20 14:24:17,238 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-20 14:24:17,238 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-20 14:24:17,238 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-20 14:24:17,238 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-20 14:24:17,238 INFO L133 SettingsManager]: * sizeof long double=12 [2018-09-20 14:24:17,240 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-20 14:24:17,240 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-20 14:24:17,240 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-20 14:24:17,240 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-20 14:24:17,241 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-20 14:24:17,241 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-20 14:24:17,241 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-20 14:24:17,241 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-20 14:24:17,242 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-20 14:24:17,242 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-20 14:24:17,242 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-09-20 14:24:17,242 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-20 14:24:17,242 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-20 14:24:17,242 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 -> c9c4c4712c0b03f250e94d62f797a284bfa7b46f [2018-09-20 14:24:17,298 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-20 14:24:17,317 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-20 14:24:17,322 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-20 14:24:17,324 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-20 14:24:17,325 INFO L276 PluginConnector]: CDTParser initialized [2018-09-20 14:24:17,327 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/floats-esbmc-regression/Float_div_true-unreach-call.i [2018-09-20 14:24:17,682 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/797f32ca9/b7bd1a0a19a448fc9a1e581b474b8e0d/FLAG7bdfcc746 [2018-09-20 14:24:17,804 INFO L277 CDTParser]: Found 1 translation units. [2018-09-20 14:24:17,804 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/floats-esbmc-regression/Float_div_true-unreach-call.i [2018-09-20 14:24:17,812 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/797f32ca9/b7bd1a0a19a448fc9a1e581b474b8e0d/FLAG7bdfcc746 [2018-09-20 14:24:17,828 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/797f32ca9/b7bd1a0a19a448fc9a1e581b474b8e0d [2018-09-20 14:24:17,833 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-20 14:24:17,836 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-20 14:24:17,838 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-20 14:24:17,838 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-20 14:24:17,845 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-20 14:24:17,846 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 02:24:17" (1/1) ... [2018-09-20 14:24:17,850 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@716e4f15 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 02:24:17, skipping insertion in model container [2018-09-20 14:24:17,850 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 02:24:17" (1/1) ... [2018-09-20 14:24:17,863 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-20 14:24:18,099 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-20 14:24:18,118 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-20 14:24:18,122 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-20 14:24:18,134 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 02:24:18 WrapperNode [2018-09-20 14:24:18,136 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-20 14:24:18,137 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-20 14:24:18,138 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-20 14:24:18,138 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-20 14:24:18,151 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 02:24:18" (1/1) ... [2018-09-20 14:24:18,151 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 02:24:18" (1/1) ... [2018-09-20 14:24:18,157 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 02:24:18" (1/1) ... [2018-09-20 14:24:18,157 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 02:24:18" (1/1) ... [2018-09-20 14:24:18,159 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 02:24:18" (1/1) ... [2018-09-20 14:24:18,164 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 02:24:18" (1/1) ... [2018-09-20 14:24:18,165 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 02:24:18" (1/1) ... [2018-09-20 14:24:18,166 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-20 14:24:18,167 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-20 14:24:18,167 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-20 14:24:18,167 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-20 14:24:18,168 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 02:24:18" (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 14:24:18,224 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-20 14:24:18,224 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-20 14:24:18,224 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-09-20 14:24:18,224 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-20 14:24:18,225 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-09-20 14:24:18,225 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-09-20 14:24:18,225 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-20 14:24:18,225 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-20 14:24:18,225 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-20 14:24:18,463 INFO L365 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-20 14:24:18,463 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 02:24:18 BoogieIcfgContainer [2018-09-20 14:24:18,463 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-20 14:24:18,464 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-20 14:24:18,464 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-20 14:24:18,468 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-20 14:24:18,469 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.09 02:24:17" (1/3) ... [2018-09-20 14:24:18,469 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31901701 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 02:24:18, skipping insertion in model container [2018-09-20 14:24:18,470 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 02:24:18" (2/3) ... [2018-09-20 14:24:18,470 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31901701 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 02:24:18, skipping insertion in model container [2018-09-20 14:24:18,470 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 02:24:18" (3/3) ... [2018-09-20 14:24:18,473 INFO L112 eAbstractionObserver]: Analyzing ICFG Float_div_true-unreach-call.i [2018-09-20 14:24:18,484 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-20 14:24:18,493 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-20 14:24:18,538 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-20 14:24:18,539 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-20 14:24:18,539 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-20 14:24:18,539 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-20 14:24:18,540 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-20 14:24:18,540 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-20 14:24:18,540 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-20 14:24:18,540 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-20 14:24:18,540 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-20 14:24:18,557 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2018-09-20 14:24:18,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-09-20 14:24:18,562 INFO L368 BasicCegarLoop]: Found error trace [2018-09-20 14:24:18,563 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-20 14:24:18,566 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-20 14:24:18,572 INFO L82 PathProgramCache]: Analyzing trace with hash -1871509567, now seen corresponding path program 1 times [2018-09-20 14:24:18,575 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-20 14:24:18,576 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-20 14:24:18,636 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-20 14:24:18,636 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-20 14:24:18,637 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-20 14:24:18,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-20 14:24:18,696 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 14:24:18,699 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-20 14:24:18,700 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-09-20 14:24:18,704 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-09-20 14:24:18,716 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-09-20 14:24:18,716 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-09-20 14:24:18,719 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 2 states. [2018-09-20 14:24:18,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-20 14:24:18,740 INFO L93 Difference]: Finished difference Result 31 states and 34 transitions. [2018-09-20 14:24:18,740 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-09-20 14:24:18,742 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2018-09-20 14:24:18,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-20 14:24:18,751 INFO L225 Difference]: With dead ends: 31 [2018-09-20 14:24:18,751 INFO L226 Difference]: Without dead ends: 12 [2018-09-20 14:24:18,755 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 14:24:18,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2018-09-20 14:24:18,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2018-09-20 14:24:18,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2018-09-20 14:24:18,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2018-09-20 14:24:18,796 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 10 [2018-09-20 14:24:18,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-20 14:24:18,796 INFO L480 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2018-09-20 14:24:18,796 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-09-20 14:24:18,797 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2018-09-20 14:24:18,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-09-20 14:24:18,797 INFO L368 BasicCegarLoop]: Found error trace [2018-09-20 14:24:18,798 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-20 14:24:18,798 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-20 14:24:18,798 INFO L82 PathProgramCache]: Analyzing trace with hash 1861991801, now seen corresponding path program 1 times [2018-09-20 14:24:18,799 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-20 14:24:18,799 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-20 14:24:18,800 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-20 14:24:18,800 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-20 14:24:18,801 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-20 14:24:18,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-09-20 14:24:18,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-09-20 14:24:18,839 INFO L443 BasicCegarLoop]: Counterexample might be feasible [2018-09-20 14:24:18,864 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.09 02:24:18 BoogieIcfgContainer [2018-09-20 14:24:18,865 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-20 14:24:18,865 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-09-20 14:24:18,865 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-09-20 14:24:18,865 INFO L276 PluginConnector]: Witness Printer initialized [2018-09-20 14:24:18,866 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 02:24:18" (3/4) ... [2018-09-20 14:24:18,872 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-09-20 14:24:18,872 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-09-20 14:24:18,873 INFO L168 Benchmark]: Toolchain (without parser) took 1039.22 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 154.7 MB). Free memory was 951.8 MB in the beginning and 1.1 GB in the end (delta: -158.4 MB). There was no memory consumed. Max. memory is 11.5 GB. [2018-09-20 14:24:18,876 INFO L168 Benchmark]: CDTParser took 0.25 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 14:24:18,876 INFO L168 Benchmark]: CACSL2BoogieTranslator took 299.40 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 14:24:18,878 INFO L168 Benchmark]: Boogie Preprocessor took 29.21 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 14:24:18,878 INFO L168 Benchmark]: RCFGBuilder took 296.65 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 154.7 MB). Free memory was 941.1 MB in the beginning and 1.1 GB in the end (delta: -192.7 MB). Peak memory consumption was 26.7 MB. Max. memory is 11.5 GB. [2018-09-20 14:24:18,880 INFO L168 Benchmark]: TraceAbstraction took 400.44 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: 23.6 MB). Peak memory consumption was 23.6 MB. Max. memory is 11.5 GB. [2018-09-20 14:24:18,881 INFO L168 Benchmark]: Witness Printer took 6.76 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-09-20 14:24:18,886 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 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 299.40 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 29.21 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 296.65 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 154.7 MB). Free memory was 941.1 MB in the beginning and 1.1 GB in the end (delta: -192.7 MB). Peak memory consumption was 26.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 400.44 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: 23.6 MB). Peak memory consumption was 23.6 MB. Max. memory is 11.5 GB. * Witness Printer took 6.76 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 2]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 12, overapproximation of someBinaryArithmeticFLOAToperation at line 10. Possible FailurePath: [L9] float x = 1.0f; [L10] float x1 = x/2.5f; 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 14:24:21,324 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-20 14:24:21,327 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-20 14:24:21,340 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-20 14:24:21,340 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-20 14:24:21,341 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-20 14:24:21,343 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-20 14:24:21,345 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-20 14:24:21,347 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-20 14:24:21,347 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-20 14:24:21,348 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-20 14:24:21,349 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-20 14:24:21,350 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-20 14:24:21,351 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-20 14:24:21,352 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-20 14:24:21,353 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-20 14:24:21,354 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-20 14:24:21,358 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-20 14:24:21,361 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-20 14:24:21,364 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-20 14:24:21,370 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-20 14:24:21,372 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-20 14:24:21,374 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-20 14:24:21,374 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-20 14:24:21,374 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-20 14:24:21,375 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-20 14:24:21,376 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-20 14:24:21,377 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-20 14:24:21,378 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-20 14:24:21,379 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-20 14:24:21,379 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-20 14:24:21,380 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-20 14:24:21,380 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-20 14:24:21,381 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-20 14:24:21,382 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-20 14:24:21,382 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-20 14:24:21,383 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2018-09-20 14:24:21,402 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-20 14:24:21,402 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-20 14:24:21,403 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-20 14:24:21,403 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-09-20 14:24:21,404 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-09-20 14:24:21,404 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-09-20 14:24:21,405 INFO L133 SettingsManager]: * Use SBE=true [2018-09-20 14:24:21,405 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-20 14:24:21,405 INFO L133 SettingsManager]: * sizeof long=4 [2018-09-20 14:24:21,405 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-09-20 14:24:21,405 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-20 14:24:21,406 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-20 14:24:21,406 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-20 14:24:21,406 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-20 14:24:21,406 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-09-20 14:24:21,407 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-09-20 14:24:21,407 INFO L133 SettingsManager]: * sizeof long double=12 [2018-09-20 14:24:21,408 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-20 14:24:21,408 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-20 14:24:21,408 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-20 14:24:21,408 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-20 14:24:21,408 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-20 14:24:21,409 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-20 14:24:21,409 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-20 14:24:21,409 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-20 14:24:21,409 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-20 14:24:21,410 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-20 14:24:21,411 INFO L133 SettingsManager]: * Trace refinement strategy=WOLF [2018-09-20 14:24:21,411 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-20 14:24:21,411 INFO L133 SettingsManager]: * Command for external solver=cvc4nyu --tear-down-incremental --rewrite-divk --print-success --lang smt [2018-09-20 14:24:21,411 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-09-20 14:24:21,411 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 -> c9c4c4712c0b03f250e94d62f797a284bfa7b46f [2018-09-20 14:24:21,489 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-20 14:24:21,508 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-20 14:24:21,512 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-20 14:24:21,515 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-20 14:24:21,515 INFO L276 PluginConnector]: CDTParser initialized [2018-09-20 14:24:21,516 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/floats-esbmc-regression/Float_div_true-unreach-call.i [2018-09-20 14:24:21,886 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a154bdc85/35b88904274d404eadfebb3c62cbc613/FLAG3fbdac041 [2018-09-20 14:24:22,028 INFO L277 CDTParser]: Found 1 translation units. [2018-09-20 14:24:22,029 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/floats-esbmc-regression/Float_div_true-unreach-call.i [2018-09-20 14:24:22,035 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a154bdc85/35b88904274d404eadfebb3c62cbc613/FLAG3fbdac041 [2018-09-20 14:24:22,051 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a154bdc85/35b88904274d404eadfebb3c62cbc613 [2018-09-20 14:24:22,056 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-20 14:24:22,060 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-20 14:24:22,061 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-20 14:24:22,061 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-20 14:24:22,068 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-20 14:24:22,069 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 02:24:22" (1/1) ... [2018-09-20 14:24:22,072 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@171bcf24 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 02:24:22, skipping insertion in model container [2018-09-20 14:24:22,073 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 02:24:22" (1/1) ... [2018-09-20 14:24:22,086 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-20 14:24:22,273 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-20 14:24:22,295 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-20 14:24:22,299 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-20 14:24:22,315 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 02:24:22 WrapperNode [2018-09-20 14:24:22,315 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-20 14:24:22,316 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-20 14:24:22,316 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-20 14:24:22,316 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-20 14:24:22,332 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 02:24:22" (1/1) ... [2018-09-20 14:24:22,332 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 02:24:22" (1/1) ... [2018-09-20 14:24:22,341 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 02:24:22" (1/1) ... [2018-09-20 14:24:22,342 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 02:24:22" (1/1) ... [2018-09-20 14:24:22,345 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 02:24:22" (1/1) ... [2018-09-20 14:24:22,350 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 02:24:22" (1/1) ... [2018-09-20 14:24:22,352 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 02:24:22" (1/1) ... [2018-09-20 14:24:22,355 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-20 14:24:22,355 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-20 14:24:22,355 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-20 14:24:22,356 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-20 14:24:22,357 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 02:24:22" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-20 14:24:22,426 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-20 14:24:22,426 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-20 14:24:22,427 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-09-20 14:24:22,427 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-20 14:24:22,427 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-09-20 14:24:22,427 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-09-20 14:24:22,427 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-20 14:24:22,428 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-20 14:24:22,428 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-20 14:24:23,087 INFO L365 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-20 14:24:23,088 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 02:24:23 BoogieIcfgContainer [2018-09-20 14:24:23,088 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-20 14:24:23,089 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-20 14:24:23,089 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-20 14:24:23,092 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-20 14:24:23,093 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.09 02:24:22" (1/3) ... [2018-09-20 14:24:23,093 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32deda76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 02:24:23, skipping insertion in model container [2018-09-20 14:24:23,093 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 02:24:22" (2/3) ... [2018-09-20 14:24:23,094 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32deda76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 02:24:23, skipping insertion in model container [2018-09-20 14:24:23,094 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 02:24:23" (3/3) ... [2018-09-20 14:24:23,096 INFO L112 eAbstractionObserver]: Analyzing ICFG Float_div_true-unreach-call.i [2018-09-20 14:24:23,106 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-20 14:24:23,114 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-20 14:24:23,165 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-20 14:24:23,166 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-20 14:24:23,166 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-20 14:24:23,166 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-20 14:24:23,167 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-20 14:24:23,167 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-20 14:24:23,167 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-20 14:24:23,167 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-20 14:24:23,167 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-20 14:24:23,187 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2018-09-20 14:24:23,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-09-20 14:24:23,193 INFO L368 BasicCegarLoop]: Found error trace [2018-09-20 14:24:23,195 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-20 14:24:23,198 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-20 14:24:23,203 INFO L82 PathProgramCache]: Analyzing trace with hash -1871509567, now seen corresponding path program 1 times [2018-09-20 14:24:23,209 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-20 14:24:23,210 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) [2018-09-20 14:24:23,228 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2018-09-20 14:24:23,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-20 14:24:23,384 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-20 14:24:23,403 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 14:24:23,404 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-20 14:24:23,417 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-20 14:24:23,417 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-09-20 14:24:23,423 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-09-20 14:24:23,435 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-09-20 14:24:23,436 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-09-20 14:24:23,439 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 2 states. [2018-09-20 14:24:23,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-20 14:24:23,461 INFO L93 Difference]: Finished difference Result 31 states and 34 transitions. [2018-09-20 14:24:23,461 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-09-20 14:24:23,463 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2018-09-20 14:24:23,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-20 14:24:23,472 INFO L225 Difference]: With dead ends: 31 [2018-09-20 14:24:23,472 INFO L226 Difference]: Without dead ends: 12 [2018-09-20 14:24:23,476 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 14:24:23,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2018-09-20 14:24:23,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2018-09-20 14:24:23,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2018-09-20 14:24:23,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2018-09-20 14:24:23,517 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 10 [2018-09-20 14:24:23,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-20 14:24:23,518 INFO L480 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2018-09-20 14:24:23,518 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-09-20 14:24:23,518 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2018-09-20 14:24:23,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-09-20 14:24:23,519 INFO L368 BasicCegarLoop]: Found error trace [2018-09-20 14:24:23,519 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-20 14:24:23,519 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-20 14:24:23,520 INFO L82 PathProgramCache]: Analyzing trace with hash 1861991801, now seen corresponding path program 1 times [2018-09-20 14:24:23,520 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-20 14:24:23,520 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) [2018-09-20 14:24:23,527 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2018-09-20 14:24:23,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-20 14:24:23,605 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-20 14:24:23,878 WARN L178 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2018-09-20 14:24:23,895 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 14:24:23,895 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-20 14:24:23,916 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-20 14:24:23,916 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-09-20 14:24:23,918 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-20 14:24:23,918 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-20 14:24:23,921 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-20 14:24:23,922 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand 3 states. [2018-09-20 14:24:24,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-20 14:24:24,322 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2018-09-20 14:24:24,434 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-20 14:24:24,434 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2018-09-20 14:24:24,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-20 14:24:24,435 INFO L225 Difference]: With dead ends: 19 [2018-09-20 14:24:24,435 INFO L226 Difference]: Without dead ends: 14 [2018-09-20 14:24:24,436 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-20 14:24:24,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2018-09-20 14:24:24,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2018-09-20 14:24:24,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2018-09-20 14:24:24,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2018-09-20 14:24:24,441 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 11 [2018-09-20 14:24:24,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-20 14:24:24,441 INFO L480 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2018-09-20 14:24:24,441 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-20 14:24:24,441 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2018-09-20 14:24:24,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-09-20 14:24:24,442 INFO L368 BasicCegarLoop]: Found error trace [2018-09-20 14:24:24,442 INFO L376 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-20 14:24:24,443 INFO L423 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-20 14:24:24,443 INFO L82 PathProgramCache]: Analyzing trace with hash -661808769, now seen corresponding path program 1 times [2018-09-20 14:24:24,443 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-20 14:24:24,443 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 14:24:24,451 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-20 14:24:24,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-20 14:24:24,568 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-20 14:24:25,214 WARN L178 SmtUtils]: Spent 382.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2018-09-20 14:24:25,233 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-20 14:24:25,234 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-20 14:24:27,652 WARN L178 SmtUtils]: Spent 344.00 ms on a formula simplification that was a NOOP. DAG size: 7 [2018-09-20 14:24:27,667 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-20 14:24:27,679 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-20 14:24:27,679 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2018-09-20 14:24:27,679 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-20 14:24:27,680 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-20 14:24:27,680 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-20 14:24:27,680 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand 6 states. [2018-09-20 14:24:33,416 WARN L178 SmtUtils]: Spent 2.30 s on a formula simplification that was a NOOP. DAG size: 11 [2018-09-20 14:24:36,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-20 14:24:36,112 INFO L93 Difference]: Finished difference Result 25 states and 27 transitions. [2018-09-20 14:24:36,113 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-09-20 14:24:36,114 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 13 [2018-09-20 14:24:36,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-20 14:24:36,115 INFO L225 Difference]: With dead ends: 25 [2018-09-20 14:24:36,115 INFO L226 Difference]: Without dead ends: 20 [2018-09-20 14:24:36,116 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 19 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 7.5s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2018-09-20 14:24:36,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2018-09-20 14:24:36,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2018-09-20 14:24:36,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2018-09-20 14:24:36,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 20 transitions. [2018-09-20 14:24:36,122 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 20 transitions. Word has length 13 [2018-09-20 14:24:36,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-20 14:24:36,123 INFO L480 AbstractCegarLoop]: Abstraction has 20 states and 20 transitions. [2018-09-20 14:24:36,123 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-20 14:24:36,123 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 20 transitions. [2018-09-20 14:24:36,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-09-20 14:24:36,124 INFO L368 BasicCegarLoop]: Found error trace [2018-09-20 14:24:36,124 INFO L376 BasicCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-20 14:24:36,125 INFO L423 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-20 14:24:36,125 INFO L82 PathProgramCache]: Analyzing trace with hash -875350895, now seen corresponding path program 2 times [2018-09-20 14:24:36,126 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-20 14:24:36,126 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2018-09-20 14:24:36,130 INFO L101 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2018-09-20 14:24:36,363 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-20 14:24:36,363 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-20 14:24:36,382 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-20 14:24:38,022 WARN L178 SmtUtils]: Spent 412.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-09-20 14:24:38,047 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-20 14:24:38,047 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-20 14:24:50,480 WARN L178 SmtUtils]: Spent 2.78 s on a formula simplification that was a NOOP. DAG size: 11 [2018-09-20 14:24:54,363 WARN L819 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 8 24) RNE (/ 5.0 2.0)))) (let ((.cse0 (fp.div RNE c_main_~x1~0 .cse1))) (or (not (fp.eq (fp.div RNE .cse0 .cse1) .cse0)) (fp.eq .cse0 ((_ to_fp 8 24) RNE (_ bv0 32)))))) is different from true [2018-09-20 14:24:56,462 WARN L797 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 8 24) RNE (/ 5.0 2.0)))) (let ((.cse0 (fp.div RNE (fp.div RNE c_main_~x1~0 .cse1) .cse1))) (or (not (fp.eq (fp.div RNE .cse0 .cse1) .cse0)) (fp.eq .cse0 ((_ to_fp 8 24) RNE (_ bv0 32)))))) is different from false [2018-09-20 14:24:58,551 WARN L819 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 8 24) RNE (/ 5.0 2.0)))) (let ((.cse0 (fp.div RNE (fp.div RNE c_main_~x1~0 .cse1) .cse1))) (or (not (fp.eq (fp.div RNE .cse0 .cse1) .cse0)) (fp.eq .cse0 ((_ to_fp 8 24) RNE (_ bv0 32)))))) is different from true [2018-09-20 14:25:00,669 WARN L797 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 8 24) RNE (/ 5.0 2.0)))) (let ((.cse0 (fp.div RNE (fp.div RNE (fp.div RNE c_main_~x1~0 .cse1) .cse1) .cse1))) (or (fp.eq .cse0 ((_ to_fp 8 24) RNE (_ bv0 32))) (not (fp.eq (fp.div RNE .cse0 .cse1) .cse0))))) is different from false [2018-09-20 14:25:02,778 WARN L819 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 8 24) RNE (/ 5.0 2.0)))) (let ((.cse0 (fp.div RNE (fp.div RNE (fp.div RNE c_main_~x1~0 .cse1) .cse1) .cse1))) (or (fp.eq .cse0 ((_ to_fp 8 24) RNE (_ bv0 32))) (not (fp.eq (fp.div RNE .cse0 .cse1) .cse0))))) is different from true [2018-09-20 14:25:02,791 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 18 not checked. [2018-09-20 14:25:02,810 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-20 14:25:02,810 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 10] total 15 [2018-09-20 14:25:02,811 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-09-20 14:25:02,811 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-09-20 14:25:02,812 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=105, Unknown=5, NotChecked=66, Total=210 [2018-09-20 14:25:02,812 INFO L87 Difference]: Start difference. First operand 20 states and 20 transitions. Second operand 15 states. [2018-09-20 14:25:04,950 WARN L819 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 8 24) RNE (_ bv0 32))) (.cse0 ((_ to_fp 8 24) RNE (/ 5.0 2.0)))) (and (= c_main_~x1~0 (fp.div RNE ((_ to_fp 8 24) RNE 1.0) .cse0)) (or (fp.eq c_main_~x~0 .cse1) (not (fp.eq c_main_~x1~0 c_main_~x~0))) (let ((.cse2 (fp.div RNE (fp.div RNE (fp.div RNE c_main_~x1~0 .cse0) .cse0) .cse0))) (or (fp.eq .cse2 .cse1) (not (fp.eq (fp.div RNE .cse2 .cse0) .cse2)))))) is different from true [2018-09-20 14:25:07,067 WARN L819 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 8 24) RNE (_ bv0 32))) (.cse2 ((_ to_fp 8 24) RNE (/ 5.0 2.0)))) (and (or (fp.eq c_main_~x~0 .cse0) (not (fp.eq c_main_~x1~0 c_main_~x~0))) (let ((.cse1 (fp.div RNE (fp.div RNE c_main_~x1~0 .cse2) .cse2))) (or (not (fp.eq (fp.div RNE .cse1 .cse2) .cse1)) (fp.eq .cse1 .cse0))) (= c_main_~x1~0 (fp.div RNE (fp.div RNE ((_ to_fp 8 24) RNE 1.0) .cse2) .cse2)))) is different from true [2018-09-20 14:25:23,202 WARN L178 SmtUtils]: Spent 3.66 s on a formula simplification that was a NOOP. DAG size: 17 [2018-09-20 14:25:33,210 WARN L178 SmtUtils]: Spent 4.34 s on a formula simplification that was a NOOP. DAG size: 14 [2018-09-20 14:25:39,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-20 14:25:39,331 INFO L93 Difference]: Finished difference Result 34 states and 36 transitions. [2018-09-20 14:25:39,332 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-09-20 14:25:39,332 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 19 [2018-09-20 14:25:39,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-20 14:25:39,333 INFO L225 Difference]: With dead ends: 34 [2018-09-20 14:25:39,333 INFO L226 Difference]: Without dead ends: 26 [2018-09-20 14:25:39,334 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 22 SyntacticMatches, 4 SemanticMatches, 19 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 55.6s TimeCoverageRelationStatistics Valid=59, Invalid=194, Unknown=7, NotChecked=160, Total=420 [2018-09-20 14:25:39,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2018-09-20 14:25:39,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2018-09-20 14:25:39,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2018-09-20 14:25:39,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 26 transitions. [2018-09-20 14:25:39,342 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 26 transitions. Word has length 19 [2018-09-20 14:25:39,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-20 14:25:39,343 INFO L480 AbstractCegarLoop]: Abstraction has 26 states and 26 transitions. [2018-09-20 14:25:39,344 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-09-20 14:25:39,344 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 26 transitions. [2018-09-20 14:25:39,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-09-20 14:25:39,345 INFO L368 BasicCegarLoop]: Found error trace [2018-09-20 14:25:39,345 INFO L376 BasicCegarLoop]: trace histogram [8, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-20 14:25:39,346 INFO L423 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-20 14:25:39,346 INFO L82 PathProgramCache]: Analyzing trace with hash -1788298717, now seen corresponding path program 3 times [2018-09-20 14:25:39,347 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-20 14:25:39,347 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 6 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with mathsat -unsat_core_generation=3 [2018-09-20 14:25:39,356 INFO L101 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2018-09-20 14:25:39,692 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-09-20 14:25:39,692 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-20 14:25:39,715 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-20 14:25:40,646 WARN L178 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 7 [2018-09-20 14:25:50,434 WARN L178 SmtUtils]: Spent 5.47 s on a formula simplification that was a NOOP. DAG size: 15 [2018-09-20 14:25:52,497 WARN L797 $PredicateComparison]: unable to prove that (and (exists ((v_main_~x~0_14 (_ FloatingPoint 8 24))) (and (not (fp.eq c_main_~x~0 v_main_~x~0_14)) (= c_main_~x~0 (fp.div RNE v_main_~x~0_14 ((_ to_fp 8 24) RNE (/ 5.0 2.0)))))) (fp.eq (fp.div RNE c_main_~x~0 ((_ to_fp 8 24) RNE (/ 5.0 2.0))) c_main_~x~0)) is different from false [2018-09-20 14:26:06,834 WARN L521 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2018-09-20 14:26:06,835 FATAL L265 ToolchainWalker]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000)Received EOF on stdin. No stderr output. at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:208) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseCheckSatResult(Executor.java:225) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.checkSat(Scriptor.java:154) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.WrapperScript.checkSat(WrapperScript.java:116) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.managedscript.ManagedScript.checkSat(ManagedScript.java:140) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.MonolithicImplicationChecker.checkImplication(MonolithicImplicationChecker.java:84) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.predicates.PredicateUnifier$PredicateComparison.compare(PredicateUnifier.java:858) 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 14:26:06,839 INFO L168 Benchmark]: Toolchain (without parser) took 104783.05 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 120.6 MB). Free memory was 951.8 MB in the beginning and 978.0 MB in the end (delta: -26.1 MB). Peak memory consumption was 94.5 MB. Max. memory is 11.5 GB. [2018-09-20 14:26:06,841 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-09-20 14:26:06,841 INFO L168 Benchmark]: CACSL2BoogieTranslator took 254.94 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 14:26:06,842 INFO L168 Benchmark]: Boogie Preprocessor took 38.81 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 14:26:06,843 INFO L168 Benchmark]: RCFGBuilder took 732.63 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 120.6 MB). Free memory was 941.1 MB in the beginning and 1.1 GB in the end (delta: -153.7 MB). Peak memory consumption was 27.1 MB. Max. memory is 11.5 GB. [2018-09-20 14:26:06,844 INFO L168 Benchmark]: TraceAbstraction took 103749.74 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 978.0 MB in the end (delta: 116.9 MB). Peak memory consumption was 116.9 MB. Max. memory is 11.5 GB. [2018-09-20 14:26:06,850 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 254.94 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 38.81 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 732.63 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 120.6 MB). Free memory was 941.1 MB in the beginning and 1.1 GB in the end (delta: -153.7 MB). Peak memory consumption was 27.1 MB. Max. memory is 11.5 GB. * TraceAbstraction took 103749.74 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 978.0 MB in the end (delta: 116.9 MB). Peak memory consumption was 116.9 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...