./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/float-benchs/rlim_invariant.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9a8b2e8d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -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 ../sv-benchmarks/c/float-benchs/rlim_invariant.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f31567337cf0142dabf0ae57cb0ae0bc5a3f732e ............................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -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 ../sv-benchmarks/c/float-benchs/rlim_invariant.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f31567337cf0142dabf0ae57cb0ae0bc5a3f732e ................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN --- Real Ultimate output --- This is Ultimate 0.1.25-9a8b2e8 [2020-10-20 00:20:36,308 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 00:20:36,312 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 00:20:36,350 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 00:20:36,351 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 00:20:36,363 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 00:20:36,365 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 00:20:36,368 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 00:20:36,371 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 00:20:36,374 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 00:20:36,377 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 00:20:36,379 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 00:20:36,379 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 00:20:36,383 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 00:20:36,386 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 00:20:36,388 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 00:20:36,396 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 00:20:36,397 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 00:20:36,400 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 00:20:36,403 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 00:20:36,406 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 00:20:36,408 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 00:20:36,409 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 00:20:36,412 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 00:20:36,417 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 00:20:36,419 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 00:20:36,419 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 00:20:36,420 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 00:20:36,422 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 00:20:36,423 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 00:20:36,423 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 00:20:36,424 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 00:20:36,425 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 00:20:36,426 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 00:20:36,427 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 00:20:36,427 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 00:20:36,428 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 00:20:36,428 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 00:20:36,429 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 00:20:36,430 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 00:20:36,431 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 00:20:36,432 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-20 00:20:36,476 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 00:20:36,477 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 00:20:36,478 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 00:20:36,479 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 00:20:36,479 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 00:20:36,479 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 00:20:36,479 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-20 00:20:36,480 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-20 00:20:36,480 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-20 00:20:36,480 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 00:20:36,481 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-20 00:20:36,482 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-20 00:20:36,482 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-20 00:20:36,483 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-20 00:20:36,483 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-20 00:20:36,483 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 00:20:36,483 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-20 00:20:36,484 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 00:20:36,484 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 00:20:36,484 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-20 00:20:36,484 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-20 00:20:36,485 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 00:20:36,485 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 00:20:36,485 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-20 00:20:36,485 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-20 00:20:36,486 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-20 00:20:36,486 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-20 00:20:36,486 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-20 00:20:36,486 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 00:20:36,487 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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(reach_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 -> f31567337cf0142dabf0ae57cb0ae0bc5a3f732e [2020-10-20 00:20:36,706 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 00:20:36,719 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 00:20:36,723 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 00:20:36,725 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 00:20:36,726 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 00:20:36,727 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-benchs/rlim_invariant.c [2020-10-20 00:20:36,811 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/93c68457a/2fb6f65ab02b4aa88874f5a4e0fb897c/FLAGf7dcdf0e5 [2020-10-20 00:20:37,366 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 00:20:37,367 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/rlim_invariant.c [2020-10-20 00:20:37,374 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/93c68457a/2fb6f65ab02b4aa88874f5a4e0fb897c/FLAGf7dcdf0e5 [2020-10-20 00:20:37,775 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/93c68457a/2fb6f65ab02b4aa88874f5a4e0fb897c [2020-10-20 00:20:37,780 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 00:20:37,788 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-20 00:20:37,789 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 00:20:37,789 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 00:20:37,793 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 00:20:37,794 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 12:20:37" (1/1) ... [2020-10-20 00:20:37,797 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@e0c37b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:20:37, skipping insertion in model container [2020-10-20 00:20:37,798 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 12:20:37" (1/1) ... [2020-10-20 00:20:37,806 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 00:20:37,824 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 00:20:38,025 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 00:20:38,037 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 00:20:38,057 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 00:20:38,075 INFO L208 MainTranslator]: Completed translation [2020-10-20 00:20:38,076 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:20:38 WrapperNode [2020-10-20 00:20:38,076 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 00:20:38,077 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-20 00:20:38,077 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-20 00:20:38,078 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-20 00:20:38,087 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:20:38" (1/1) ... [2020-10-20 00:20:38,097 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:20:38" (1/1) ... [2020-10-20 00:20:38,119 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-20 00:20:38,120 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 00:20:38,120 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 00:20:38,120 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 00:20:38,130 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:20:38" (1/1) ... [2020-10-20 00:20:38,131 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:20:38" (1/1) ... [2020-10-20 00:20:38,132 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:20:38" (1/1) ... [2020-10-20 00:20:38,133 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:20:38" (1/1) ... [2020-10-20 00:20:38,138 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:20:38" (1/1) ... [2020-10-20 00:20:38,143 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:20:38" (1/1) ... [2020-10-20 00:20:38,145 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:20:38" (1/1) ... [2020-10-20 00:20:38,147 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 00:20:38,148 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 00:20:38,148 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 00:20:38,149 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 00:20:38,150 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:20:38" (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 [2020-10-20 00:20:38,217 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-20 00:20:38,217 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-20 00:20:38,217 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 00:20:38,224 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 00:20:38,443 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 00:20:38,443 INFO L298 CfgBuilder]: Removed 13 assume(true) statements. [2020-10-20 00:20:38,445 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:20:38 BoogieIcfgContainer [2020-10-20 00:20:38,446 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 00:20:38,447 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-20 00:20:38,447 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-20 00:20:38,451 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-20 00:20:38,451 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 12:20:37" (1/3) ... [2020-10-20 00:20:38,452 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@263601c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 12:20:38, skipping insertion in model container [2020-10-20 00:20:38,453 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:20:38" (2/3) ... [2020-10-20 00:20:38,453 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@263601c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 12:20:38, skipping insertion in model container [2020-10-20 00:20:38,453 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:20:38" (3/3) ... [2020-10-20 00:20:38,455 INFO L111 eAbstractionObserver]: Analyzing ICFG rlim_invariant.c [2020-10-20 00:20:38,472 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-20 00:20:38,481 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-20 00:20:38,500 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-20 00:20:38,535 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-20 00:20:38,538 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-20 00:20:38,538 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-20 00:20:38,551 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 00:20:38,552 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 00:20:38,552 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-20 00:20:38,553 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 00:20:38,553 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-20 00:20:38,575 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2020-10-20 00:20:38,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-20 00:20:38,582 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:20:38,584 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 00:20:38,584 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:20:38,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:20:38,592 INFO L82 PathProgramCache]: Analyzing trace with hash -1473640742, now seen corresponding path program 1 times [2020-10-20 00:20:38,604 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 00:20:38,605 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16889421] [2020-10-20 00:20:38,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 00:20:38,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 00:20:38,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 00:20:38,751 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16889421] [2020-10-20 00:20:38,751 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 00:20:38,752 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-20 00:20:38,753 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032763112] [2020-10-20 00:20:38,757 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-20 00:20:38,757 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 00:20:38,772 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-20 00:20:38,773 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-20 00:20:38,775 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 2 states. [2020-10-20 00:20:38,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 00:20:38,795 INFO L93 Difference]: Finished difference Result 35 states and 47 transitions. [2020-10-20 00:20:38,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-20 00:20:38,797 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2020-10-20 00:20:38,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 00:20:38,808 INFO L225 Difference]: With dead ends: 35 [2020-10-20 00:20:38,808 INFO L226 Difference]: Without dead ends: 14 [2020-10-20 00:20:38,812 INFO L677 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 [2020-10-20 00:20:38,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2020-10-20 00:20:38,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2020-10-20 00:20:38,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2020-10-20 00:20:38,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 16 transitions. [2020-10-20 00:20:38,846 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 16 transitions. Word has length 11 [2020-10-20 00:20:38,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 00:20:38,847 INFO L481 AbstractCegarLoop]: Abstraction has 14 states and 16 transitions. [2020-10-20 00:20:38,847 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-20 00:20:38,855 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2020-10-20 00:20:38,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-20 00:20:38,856 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:20:38,857 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 00:20:38,857 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-20 00:20:38,857 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:20:38,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:20:38,858 INFO L82 PathProgramCache]: Analyzing trace with hash 2069238230, now seen corresponding path program 1 times [2020-10-20 00:20:38,858 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 00:20:38,859 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754465937] [2020-10-20 00:20:38,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 00:20:38,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 00:20:38,902 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 00:20:38,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 00:20:38,930 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 00:20:38,955 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 00:20:38,956 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-20 00:20:38,957 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-20 00:20:38,987 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 12:20:38 BoogieIcfgContainer [2020-10-20 00:20:38,988 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-20 00:20:38,988 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 00:20:38,988 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 00:20:38,989 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 00:20:38,989 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:20:38" (3/4) ... [2020-10-20 00:20:38,994 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-10-20 00:20:38,994 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 00:20:38,997 INFO L168 Benchmark]: Toolchain (without parser) took 1213.74 ms. Allocated memory was 39.8 MB in the beginning and 44.6 MB in the end (delta: 4.7 MB). Free memory was 17.6 MB in the beginning and 19.2 MB in the end (delta: -1.7 MB). Peak memory consumption was 3.1 MB. Max. memory is 14.3 GB. [2020-10-20 00:20:38,998 INFO L168 Benchmark]: CDTParser took 0.35 ms. Allocated memory is still 30.9 MB. Free memory was 6.2 MB in the beginning and 6.1 MB in the end (delta: 41.7 kB). Peak memory consumption was 41.7 kB. Max. memory is 14.3 GB. [2020-10-20 00:20:38,999 INFO L168 Benchmark]: CACSL2BoogieTranslator took 287.75 ms. Allocated memory was 39.8 MB in the beginning and 40.9 MB in the end (delta: 1.0 MB). Free memory was 16.8 MB in the beginning and 16.6 MB in the end (delta: 178.4 kB). Peak memory consumption was 7.3 MB. Max. memory is 14.3 GB. [2020-10-20 00:20:39,000 INFO L168 Benchmark]: Boogie Procedure Inliner took 42.44 ms. Allocated memory is still 40.9 MB. Free memory was 16.4 MB in the beginning and 14.9 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.6 MB. Max. memory is 14.3 GB. [2020-10-20 00:20:39,001 INFO L168 Benchmark]: Boogie Preprocessor took 27.98 ms. Allocated memory is still 40.9 MB. Free memory was 14.9 MB in the beginning and 13.5 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 14.3 GB. [2020-10-20 00:20:39,002 INFO L168 Benchmark]: RCFGBuilder took 297.92 ms. Allocated memory was 40.9 MB in the beginning and 42.5 MB in the end (delta: 1.6 MB). Free memory was 13.3 MB in the beginning and 15.1 MB in the end (delta: -1.8 MB). Peak memory consumption was 2.8 MB. Max. memory is 14.3 GB. [2020-10-20 00:20:39,003 INFO L168 Benchmark]: TraceAbstraction took 540.61 ms. Allocated memory was 42.5 MB in the beginning and 44.6 MB in the end (delta: 2.1 MB). Free memory was 14.7 MB in the beginning and 19.8 MB in the end (delta: -5.1 MB). There was no memory consumed. Max. memory is 14.3 GB. [2020-10-20 00:20:39,004 INFO L168 Benchmark]: Witness Printer took 6.03 ms. Allocated memory is still 44.6 MB. Free memory was 19.5 MB in the beginning and 19.2 MB in the end (delta: 282.5 kB). Peak memory consumption was 282.5 kB. Max. memory is 14.3 GB. [2020-10-20 00:20:39,010 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35 ms. Allocated memory is still 30.9 MB. Free memory was 6.2 MB in the beginning and 6.1 MB in the end (delta: 41.7 kB). Peak memory consumption was 41.7 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 287.75 ms. Allocated memory was 39.8 MB in the beginning and 40.9 MB in the end (delta: 1.0 MB). Free memory was 16.8 MB in the beginning and 16.6 MB in the end (delta: 178.4 kB). Peak memory consumption was 7.3 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 42.44 ms. Allocated memory is still 40.9 MB. Free memory was 16.4 MB in the beginning and 14.9 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.6 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 27.98 ms. Allocated memory is still 40.9 MB. Free memory was 14.9 MB in the beginning and 13.5 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 14.3 GB. * RCFGBuilder took 297.92 ms. Allocated memory was 40.9 MB in the beginning and 42.5 MB in the end (delta: 1.6 MB). Free memory was 13.3 MB in the beginning and 15.1 MB in the end (delta: -1.8 MB). Peak memory consumption was 2.8 MB. Max. memory is 14.3 GB. * TraceAbstraction took 540.61 ms. Allocated memory was 42.5 MB in the beginning and 44.6 MB in the end (delta: 2.1 MB). Free memory was 14.7 MB in the beginning and 19.8 MB in the end (delta: -5.1 MB). There was no memory consumed. Max. memory is 14.3 GB. * Witness Printer took 6.03 ms. Allocated memory is still 44.6 MB. Free memory was 19.5 MB in the beginning and 19.2 MB in the end (delta: 282.5 kB). Peak memory consumption was 282.5 kB. Max. memory is 14.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 3]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 32, overapproximation of to_real at line 17, overapproximation of someBinaryArithmeticFLOAToperation at line 29. Possible FailurePath: [L14] float X, Y, S, R, D; [L15] int i; [L17] Y = 0 [L19] i = 0 [L19] COND TRUE i < 100000 [L21] X = __VERIFIER_nondet_float() [L22] D = __VERIFIER_nondet_float() [L8] COND FALSE !(!cond) [L8] COND FALSE !(!cond) [L26] S = Y [L27] Y = X [L28] R = X - S [L29] COND TRUE R <= -D [L29] Y = S - D [L10] COND TRUE !(cond) [L3] __assert_fail("0", "rlim_invariant.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 19 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.4s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 20 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 DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 22 NumberOfCodeBlocks, 22 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 10 ConstructedInterpolants, 0 QuantifiedInterpolants, 100 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: 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 0.1.25-9a8b2e8 [2020-10-20 00:20:41,255 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 00:20:41,258 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 00:20:41,282 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 00:20:41,283 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 00:20:41,284 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 00:20:41,285 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 00:20:41,287 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 00:20:41,289 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 00:20:41,290 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 00:20:41,291 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 00:20:41,293 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 00:20:41,293 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 00:20:41,294 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 00:20:41,295 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 00:20:41,296 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 00:20:41,298 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 00:20:41,299 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 00:20:41,301 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 00:20:41,303 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 00:20:41,314 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 00:20:41,315 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 00:20:41,317 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 00:20:41,318 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 00:20:41,320 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 00:20:41,321 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 00:20:41,321 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 00:20:41,322 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 00:20:41,323 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 00:20:41,324 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 00:20:41,324 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 00:20:41,325 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 00:20:41,326 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 00:20:41,326 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 00:20:41,327 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 00:20:41,328 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 00:20:41,328 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 00:20:41,329 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 00:20:41,329 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 00:20:41,330 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 00:20:41,331 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 00:20:41,332 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-10-20 00:20:41,356 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 00:20:41,356 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 00:20:41,358 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 00:20:41,358 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 00:20:41,358 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 00:20:41,359 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 00:20:41,359 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-20 00:20:41,359 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-20 00:20:41,360 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 00:20:41,360 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-20 00:20:41,360 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-20 00:20:41,360 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-20 00:20:41,361 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-10-20 00:20:41,361 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-10-20 00:20:41,361 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-20 00:20:41,362 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-20 00:20:41,362 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 00:20:41,362 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-20 00:20:41,362 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 00:20:41,363 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 00:20:41,363 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-20 00:20:41,363 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-20 00:20:41,363 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 00:20:41,364 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 00:20:41,364 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-20 00:20:41,364 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-20 00:20:41,364 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-10-20 00:20:41,365 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-10-20 00:20:41,365 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-20 00:20:41,365 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 00:20:41,366 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-20 00:20:41,366 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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(reach_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 -> f31567337cf0142dabf0ae57cb0ae0bc5a3f732e [2020-10-20 00:20:41,579 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 00:20:41,600 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 00:20:41,606 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 00:20:41,610 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 00:20:41,611 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 00:20:41,612 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-benchs/rlim_invariant.c [2020-10-20 00:20:41,694 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3152bf355/7948d26885044bfb8ccabefcc2229034/FLAGb16cf8264 [2020-10-20 00:20:42,248 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 00:20:42,249 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/rlim_invariant.c [2020-10-20 00:20:42,260 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3152bf355/7948d26885044bfb8ccabefcc2229034/FLAGb16cf8264 [2020-10-20 00:20:42,606 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3152bf355/7948d26885044bfb8ccabefcc2229034 [2020-10-20 00:20:42,611 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 00:20:42,619 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-20 00:20:42,622 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 00:20:42,622 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 00:20:42,626 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 00:20:42,627 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 12:20:42" (1/1) ... [2020-10-20 00:20:42,631 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@664b5396 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:20:42, skipping insertion in model container [2020-10-20 00:20:42,632 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 12:20:42" (1/1) ... [2020-10-20 00:20:42,641 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 00:20:42,663 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 00:20:42,938 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 00:20:42,954 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 00:20:42,977 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 00:20:42,996 INFO L208 MainTranslator]: Completed translation [2020-10-20 00:20:42,997 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:20:42 WrapperNode [2020-10-20 00:20:42,997 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 00:20:42,998 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-20 00:20:42,998 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-20 00:20:42,999 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-20 00:20:43,008 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:20:42" (1/1) ... [2020-10-20 00:20:43,019 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:20:42" (1/1) ... [2020-10-20 00:20:43,042 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-20 00:20:43,043 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 00:20:43,043 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 00:20:43,043 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 00:20:43,054 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:20:42" (1/1) ... [2020-10-20 00:20:43,054 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:20:42" (1/1) ... [2020-10-20 00:20:43,058 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:20:42" (1/1) ... [2020-10-20 00:20:43,058 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:20:42" (1/1) ... [2020-10-20 00:20:43,066 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:20:42" (1/1) ... [2020-10-20 00:20:43,071 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:20:42" (1/1) ... [2020-10-20 00:20:43,074 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:20:42" (1/1) ... [2020-10-20 00:20:43,077 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 00:20:43,078 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 00:20:43,078 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 00:20:43,078 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 00:20:43,079 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:20:42" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 00:20:43,150 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-10-20 00:20:43,152 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-20 00:20:43,152 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 00:20:43,153 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 00:20:43,600 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 00:20:43,600 INFO L298 CfgBuilder]: Removed 13 assume(true) statements. [2020-10-20 00:20:43,603 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:20:43 BoogieIcfgContainer [2020-10-20 00:20:43,603 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 00:20:43,604 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-20 00:20:43,605 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-20 00:20:43,608 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-20 00:20:43,609 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 12:20:42" (1/3) ... [2020-10-20 00:20:43,610 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@613ddc8b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 12:20:43, skipping insertion in model container [2020-10-20 00:20:43,610 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:20:42" (2/3) ... [2020-10-20 00:20:43,611 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@613ddc8b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 12:20:43, skipping insertion in model container [2020-10-20 00:20:43,611 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:20:43" (3/3) ... [2020-10-20 00:20:43,613 INFO L111 eAbstractionObserver]: Analyzing ICFG rlim_invariant.c [2020-10-20 00:20:43,625 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-20 00:20:43,633 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-20 00:20:43,647 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-20 00:20:43,674 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-20 00:20:43,675 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-20 00:20:43,675 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-20 00:20:43,676 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 00:20:43,676 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 00:20:43,676 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-20 00:20:43,677 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 00:20:43,677 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-20 00:20:43,693 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2020-10-20 00:20:43,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-20 00:20:43,700 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:20:43,702 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 00:20:43,702 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:20:43,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:20:43,718 INFO L82 PathProgramCache]: Analyzing trace with hash -1473640742, now seen corresponding path program 1 times [2020-10-20 00:20:43,730 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 00:20:43,731 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1496054287] [2020-10-20 00:20:43,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 [2020-10-20 00:20:43,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 00:20:43,862 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 1 conjunts are in the unsatisfiable core [2020-10-20 00:20:43,867 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 00:20:43,881 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 00:20:43,882 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-20 00:20:43,887 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 00:20:43,888 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1496054287] [2020-10-20 00:20:43,889 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-20 00:20:43,889 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-10-20 00:20:43,890 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244621164] [2020-10-20 00:20:43,894 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-20 00:20:43,895 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-20 00:20:43,904 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-20 00:20:43,905 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-20 00:20:43,907 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 2 states. [2020-10-20 00:20:43,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 00:20:43,922 INFO L93 Difference]: Finished difference Result 35 states and 47 transitions. [2020-10-20 00:20:43,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-20 00:20:43,923 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2020-10-20 00:20:43,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 00:20:43,932 INFO L225 Difference]: With dead ends: 35 [2020-10-20 00:20:43,933 INFO L226 Difference]: Without dead ends: 14 [2020-10-20 00:20:43,935 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-20 00:20:43,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2020-10-20 00:20:43,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2020-10-20 00:20:43,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2020-10-20 00:20:43,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 16 transitions. [2020-10-20 00:20:43,965 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 16 transitions. Word has length 11 [2020-10-20 00:20:43,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 00:20:43,966 INFO L481 AbstractCegarLoop]: Abstraction has 14 states and 16 transitions. [2020-10-20 00:20:43,966 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-20 00:20:43,966 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2020-10-20 00:20:43,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-20 00:20:43,967 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:20:43,967 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 00:20:44,175 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-10-20 00:20:44,176 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:20:44,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:20:44,177 INFO L82 PathProgramCache]: Analyzing trace with hash 2069238230, now seen corresponding path program 1 times [2020-10-20 00:20:44,186 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 00:20:44,187 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2001864788] [2020-10-20 00:20:44,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 [2020-10-20 00:20:44,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 00:20:44,311 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-20 00:20:44,313 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 00:20:44,483 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2001864788] [2020-10-20 00:20:44,484 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: no int: (_ BitVec 32) [2020-10-20 00:20:44,484 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1113655932] [2020-10-20 00:20:44,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 Starting monitored process 4 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2020-10-20 00:20:44,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 00:20:44,796 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-20 00:20:44,798 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 00:20:44,903 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: no int: (_ BitVec 32) [2020-10-20 00:20:44,904 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [237260612] [2020-10-20 00:20:44,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 00:20:45,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 00:20:45,055 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 13 conjunts are in the unsatisfiable core [2020-10-20 00:20:45,056 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 00:20:45,225 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: no int: (_ BitVec 32) [2020-10-20 00:20:45,225 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2020-10-20 00:20:45,225 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2020-10-20 00:20:45,226 ERROR L205 FreeRefinementEngine]: Strategy WOLF failed to provide any proof altough trace is infeasible [2020-10-20 00:20:45,226 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-20 00:20:45,836 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 cvc4 --incremental --print-success --lang smt --rewrite-divk,3 mathsat -unsat_core_generation=3,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 00:20:45,853 WARN L238 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-10-20 00:20:45,854 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 12:20:45 BoogieIcfgContainer [2020-10-20 00:20:45,854 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-20 00:20:45,855 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 00:20:45,855 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 00:20:45,855 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 00:20:45,856 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:20:43" (3/4) ... [2020-10-20 00:20:45,860 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-10-20 00:20:45,860 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 00:20:45,863 INFO L168 Benchmark]: Toolchain (without parser) took 3249.03 ms. Allocated memory was 40.4 MB in the beginning and 46.7 MB in the end (delta: 6.3 MB). Free memory was 18.7 MB in the beginning and 27.3 MB in the end (delta: -8.6 MB). There was no memory consumed. Max. memory is 14.3 GB. [2020-10-20 00:20:45,864 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 30.9 MB. Free memory was 7.0 MB in the beginning and 7.0 MB in the end (delta: 44.0 kB). Peak memory consumption was 44.0 kB. Max. memory is 14.3 GB. [2020-10-20 00:20:45,865 INFO L168 Benchmark]: CACSL2BoogieTranslator took 375.95 ms. Allocated memory was 40.4 MB in the beginning and 41.4 MB in the end (delta: 1.0 MB). Free memory was 17.9 MB in the beginning and 17.8 MB in the end (delta: 86.1 kB). Peak memory consumption was 8.7 MB. Max. memory is 14.3 GB. [2020-10-20 00:20:45,866 INFO L168 Benchmark]: Boogie Procedure Inliner took 44.76 ms. Allocated memory is still 41.4 MB. Free memory was 17.8 MB in the beginning and 16.0 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.8 MB. Max. memory is 14.3 GB. [2020-10-20 00:20:45,867 INFO L168 Benchmark]: Boogie Preprocessor took 34.36 ms. Allocated memory is still 41.4 MB. Free memory was 16.0 MB in the beginning and 14.5 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.5 MB. Max. memory is 14.3 GB. [2020-10-20 00:20:45,868 INFO L168 Benchmark]: RCFGBuilder took 525.46 ms. Allocated memory was 41.4 MB in the beginning and 43.0 MB in the end (delta: 1.6 MB). Free memory was 14.3 MB in the beginning and 16.0 MB in the end (delta: -1.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 14.3 GB. [2020-10-20 00:20:45,870 INFO L168 Benchmark]: TraceAbstraction took 2249.85 ms. Allocated memory was 43.0 MB in the beginning and 46.7 MB in the end (delta: 3.7 MB). Free memory was 15.5 MB in the beginning and 27.6 MB in the end (delta: -12.1 MB). Peak memory consumption was 6.3 MB. Max. memory is 14.3 GB. [2020-10-20 00:20:45,870 INFO L168 Benchmark]: Witness Printer took 5.79 ms. Allocated memory is still 46.7 MB. Free memory was 27.6 MB in the beginning and 27.3 MB in the end (delta: 362.0 kB). Peak memory consumption was 362.0 kB. Max. memory is 14.3 GB. [2020-10-20 00:20:45,876 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 30.9 MB. Free memory was 7.0 MB in the beginning and 7.0 MB in the end (delta: 44.0 kB). Peak memory consumption was 44.0 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 375.95 ms. Allocated memory was 40.4 MB in the beginning and 41.4 MB in the end (delta: 1.0 MB). Free memory was 17.9 MB in the beginning and 17.8 MB in the end (delta: 86.1 kB). Peak memory consumption was 8.7 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 44.76 ms. Allocated memory is still 41.4 MB. Free memory was 17.8 MB in the beginning and 16.0 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.8 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 34.36 ms. Allocated memory is still 41.4 MB. Free memory was 16.0 MB in the beginning and 14.5 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.5 MB. Max. memory is 14.3 GB. * RCFGBuilder took 525.46 ms. Allocated memory was 41.4 MB in the beginning and 43.0 MB in the end (delta: 1.6 MB). Free memory was 14.3 MB in the beginning and 16.0 MB in the end (delta: -1.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 14.3 GB. * TraceAbstraction took 2249.85 ms. Allocated memory was 43.0 MB in the beginning and 46.7 MB in the end (delta: 3.7 MB). Free memory was 15.5 MB in the beginning and 27.6 MB in the end (delta: -12.1 MB). Peak memory consumption was 6.3 MB. Max. memory is 14.3 GB. * Witness Printer took 5.79 ms. Allocated memory is still 46.7 MB. Free memory was 27.6 MB in the beginning and 27.3 MB in the end (delta: 362.0 kB). Peak memory consumption was 362.0 kB. Max. memory is 14.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 3]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L14] float X, Y, S, R, D; [L15] int i; [L17] Y = 0 [L19] i = 0 [L19] COND TRUE i < 100000 [L21] X = __VERIFIER_nondet_float() [L22] D = __VERIFIER_nondet_float() [L8] COND FALSE !(!cond) [L8] COND FALSE !(!cond) [L26] S = Y [L27] Y = X [L28] R = X - S [L29] COND TRUE R <= -D [L29] Y = S - D [L10] COND TRUE !(cond) [L3] __assert_fail("0", "rlim_invariant.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 19 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNKNOWN, OverallTime: 2.1s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 20 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 20 GetRequests, 20 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 DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 11 NumberOfCodeBlocks, 11 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 20 ConstructedInterpolants, 0 QuantifiedInterpolants, 200 SizeOfPredicates, 0 NumberOfNonLiveVariables, 42 ConjunctsInSsa, 1 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...