./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/floats-cbmc-regression/float-no-simp6.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f470102c Calling Ultimate with: /usr/bin/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 ../sv-benchmarks/c/floats-cbmc-regression/float-no-simp6.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c87f23af740954e6de1a94dd09957e85cd60c58b ......................................................................................................................................................................................................................... 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 -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 ../sv-benchmarks/c/floats-cbmc-regression/float-no-simp6.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c87f23af740954e6de1a94dd09957e85cd60c58b ........................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.25-f470102 [2019-11-28 16:38:36,397 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-28 16:38:36,400 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-28 16:38:36,413 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-28 16:38:36,413 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-28 16:38:36,414 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-28 16:38:36,416 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-28 16:38:36,418 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-28 16:38:36,420 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-28 16:38:36,421 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-28 16:38:36,422 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-28 16:38:36,423 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-28 16:38:36,424 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-28 16:38:36,425 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-28 16:38:36,426 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-28 16:38:36,427 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-28 16:38:36,428 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-28 16:38:36,429 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-28 16:38:36,431 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-28 16:38:36,434 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-28 16:38:36,436 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-28 16:38:36,437 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-28 16:38:36,439 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-28 16:38:36,441 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-28 16:38:36,444 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-28 16:38:36,445 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-28 16:38:36,445 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-28 16:38:36,446 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-28 16:38:36,447 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-28 16:38:36,448 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-28 16:38:36,448 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-28 16:38:36,449 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-28 16:38:36,450 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-28 16:38:36,451 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-28 16:38:36,452 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-28 16:38:36,453 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-28 16:38:36,454 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-28 16:38:36,454 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-28 16:38:36,454 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-28 16:38:36,455 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-28 16:38:36,456 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-28 16:38:36,457 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-28 16:38:36,477 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-28 16:38:36,478 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-28 16:38:36,479 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-28 16:38:36,480 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-28 16:38:36,480 INFO L138 SettingsManager]: * Use SBE=true [2019-11-28 16:38:36,480 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-28 16:38:36,481 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-28 16:38:36,481 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-28 16:38:36,481 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-28 16:38:36,481 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-28 16:38:36,482 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-28 16:38:36,482 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-28 16:38:36,482 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-28 16:38:36,483 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-28 16:38:36,483 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-28 16:38:36,483 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-28 16:38:36,484 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-28 16:38:36,484 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-28 16:38:36,484 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-28 16:38:36,484 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-28 16:38:36,487 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-28 16:38:36,487 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-28 16:38:36,488 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-28 16:38:36,488 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-28 16:38:36,488 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-28 16:38:36,489 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-28 16:38:36,489 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-28 16:38:36,490 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-28 16:38:36,490 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-11-28 16:38:36,492 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(__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 -> c87f23af740954e6de1a94dd09957e85cd60c58b [2019-11-28 16:38:36,807 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-28 16:38:36,824 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-28 16:38:36,828 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-28 16:38:36,834 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-28 16:38:36,835 INFO L275 PluginConnector]: CDTParser initialized [2019-11-28 16:38:36,836 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/floats-cbmc-regression/float-no-simp6.c [2019-11-28 16:38:36,924 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3111141dc/05ea0c392fee4026853f31e373b8eecb/FLAGdc6e5cc40 [2019-11-28 16:38:37,370 INFO L306 CDTParser]: Found 1 translation units. [2019-11-28 16:38:37,371 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-cbmc-regression/float-no-simp6.c [2019-11-28 16:38:37,378 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3111141dc/05ea0c392fee4026853f31e373b8eecb/FLAGdc6e5cc40 [2019-11-28 16:38:37,779 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3111141dc/05ea0c392fee4026853f31e373b8eecb [2019-11-28 16:38:37,782 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-28 16:38:37,784 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-28 16:38:37,785 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-28 16:38:37,785 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-28 16:38:37,791 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-28 16:38:37,792 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:38:37" (1/1) ... [2019-11-28 16:38:37,794 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6af3dfac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:38:37, skipping insertion in model container [2019-11-28 16:38:37,795 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:38:37" (1/1) ... [2019-11-28 16:38:37,803 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-28 16:38:37,820 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-28 16:38:38,008 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 16:38:38,014 INFO L203 MainTranslator]: Completed pre-run [2019-11-28 16:38:38,034 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 16:38:38,049 INFO L208 MainTranslator]: Completed translation [2019-11-28 16:38:38,050 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:38:38 WrapperNode [2019-11-28 16:38:38,050 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-28 16:38:38,050 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-28 16:38:38,051 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-28 16:38:38,051 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-28 16:38:38,116 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:38:38" (1/1) ... [2019-11-28 16:38:38,122 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:38:38" (1/1) ... [2019-11-28 16:38:38,139 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-28 16:38:38,140 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-28 16:38:38,140 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-28 16:38:38,140 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-28 16:38:38,149 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:38:38" (1/1) ... [2019-11-28 16:38:38,149 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:38:38" (1/1) ... [2019-11-28 16:38:38,149 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:38:38" (1/1) ... [2019-11-28 16:38:38,150 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:38:38" (1/1) ... [2019-11-28 16:38:38,153 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:38:38" (1/1) ... [2019-11-28 16:38:38,154 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:38:38" (1/1) ... [2019-11-28 16:38:38,155 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:38:38" (1/1) ... [2019-11-28 16:38:38,157 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-28 16:38:38,158 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-28 16:38:38,158 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-28 16:38:38,158 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-28 16:38:38,159 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:38:38" (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 [2019-11-28 16:38:38,215 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-28 16:38:38,215 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-28 16:38:38,349 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-28 16:38:38,350 INFO L287 CfgBuilder]: Removed 10 assume(true) statements. [2019-11-28 16:38:38,351 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:38:38 BoogieIcfgContainer [2019-11-28 16:38:38,351 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-28 16:38:38,352 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-28 16:38:38,352 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-28 16:38:38,355 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-28 16:38:38,356 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 04:38:37" (1/3) ... [2019-11-28 16:38:38,357 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@570e0938 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:38:38, skipping insertion in model container [2019-11-28 16:38:38,357 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:38:38" (2/3) ... [2019-11-28 16:38:38,357 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@570e0938 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:38:38, skipping insertion in model container [2019-11-28 16:38:38,358 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:38:38" (3/3) ... [2019-11-28 16:38:38,359 INFO L109 eAbstractionObserver]: Analyzing ICFG float-no-simp6.c [2019-11-28 16:38:38,367 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-28 16:38:38,372 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2019-11-28 16:38:38,384 INFO L249 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2019-11-28 16:38:38,411 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-28 16:38:38,411 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-28 16:38:38,411 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-28 16:38:38,412 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-28 16:38:38,412 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-28 16:38:38,412 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-28 16:38:38,412 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-28 16:38:38,412 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-28 16:38:38,430 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states. [2019-11-28 16:38:38,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2019-11-28 16:38:38,437 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 16:38:38,438 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1] [2019-11-28 16:38:38,439 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 16:38:38,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 16:38:38,446 INFO L82 PathProgramCache]: Analyzing trace with hash 30881, now seen corresponding path program 1 times [2019-11-28 16:38:38,455 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 16:38:38,456 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [905842934] [2019-11-28 16:38:38,456 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 16:38:38,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 16:38:38,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 16:38:38,550 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 16:38:38,551 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-28 16:38:38,566 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 04:38:38 BoogieIcfgContainer [2019-11-28 16:38:38,566 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-28 16:38:38,567 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-28 16:38:38,567 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-28 16:38:38,567 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-28 16:38:38,568 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:38:38" (3/4) ... [2019-11-28 16:38:38,573 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-11-28 16:38:38,573 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-28 16:38:38,576 INFO L168 Benchmark]: Toolchain (without parser) took 791.43 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 127.9 MB). Free memory was 961.7 MB in the beginning and 1.1 GB in the end (delta: -129.8 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 16:38:38,577 INFO L168 Benchmark]: CDTParser took 1.15 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 16:38:38,577 INFO L168 Benchmark]: CACSL2BoogieTranslator took 265.06 ms. Allocated memory is still 1.0 GB. Free memory was 961.7 MB in the beginning and 951.0 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-11-28 16:38:38,578 INFO L168 Benchmark]: Boogie Procedure Inliner took 88.79 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 127.9 MB). Free memory was 951.0 MB in the beginning and 1.1 GB in the end (delta: -173.8 MB). Peak memory consumption was 9.5 MB. Max. memory is 11.5 GB. [2019-11-28 16:38:38,579 INFO L168 Benchmark]: Boogie Preprocessor took 17.74 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. [2019-11-28 16:38:38,580 INFO L168 Benchmark]: RCFGBuilder took 193.70 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: 18.5 MB). Peak memory consumption was 18.5 MB. Max. memory is 11.5 GB. [2019-11-28 16:38:38,581 INFO L168 Benchmark]: TraceAbstraction took 214.05 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: 14.8 MB). Peak memory consumption was 14.8 MB. Max. memory is 11.5 GB. [2019-11-28 16:38:38,581 INFO L168 Benchmark]: Witness Printer took 6.62 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. [2019-11-28 16:38:38,587 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.15 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 265.06 ms. Allocated memory is still 1.0 GB. Free memory was 961.7 MB in the beginning and 951.0 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 88.79 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 127.9 MB). Free memory was 951.0 MB in the beginning and 1.1 GB in the end (delta: -173.8 MB). Peak memory consumption was 9.5 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 17.74 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. * RCFGBuilder took 193.70 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: 18.5 MB). Peak memory consumption was 18.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 214.05 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: 14.8 MB). Peak memory consumption was 14.8 MB. Max. memory is 11.5 GB. * Witness Printer took 6.62 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: 23]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 23, overapproximation of someBinaryArithmeticFLOAToperation at line 21. Possible FailurePath: [L18] float f1=0x1.000000p-1f; [L19] float f2=0x1.fffffep-126f; [L21] float res = f1 * f2; [L23] COND TRUE !(res == 0x1.0p-126f) [L23] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 15 locations, 3 error locations. Result: UNSAFE, OverallTime: 0.1s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=15occurred 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: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 3 NumberOfCodeBlocks, 3 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: 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-f470102 [2019-11-28 16:38:40,468 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-28 16:38:40,470 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-28 16:38:40,490 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-28 16:38:40,490 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-28 16:38:40,493 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-28 16:38:40,495 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-28 16:38:40,497 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-28 16:38:40,510 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-28 16:38:40,512 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-28 16:38:40,513 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-28 16:38:40,515 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-28 16:38:40,515 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-28 16:38:40,516 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-28 16:38:40,517 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-28 16:38:40,518 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-28 16:38:40,519 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-28 16:38:40,520 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-28 16:38:40,522 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-28 16:38:40,524 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-28 16:38:40,525 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-28 16:38:40,527 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-28 16:38:40,528 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-28 16:38:40,529 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-28 16:38:40,533 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-28 16:38:40,536 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-28 16:38:40,536 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-28 16:38:40,537 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-28 16:38:40,540 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-28 16:38:40,541 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-28 16:38:40,541 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-28 16:38:40,541 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-28 16:38:40,542 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-28 16:38:40,543 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-28 16:38:40,545 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-28 16:38:40,545 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-28 16:38:40,546 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-28 16:38:40,546 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-28 16:38:40,547 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-28 16:38:40,553 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-28 16:38:40,555 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-28 16:38:40,557 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2019-11-28 16:38:40,573 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-28 16:38:40,574 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-28 16:38:40,575 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-28 16:38:40,575 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-28 16:38:40,576 INFO L138 SettingsManager]: * Use SBE=true [2019-11-28 16:38:40,576 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-28 16:38:40,576 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-28 16:38:40,577 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-28 16:38:40,577 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-28 16:38:40,577 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-28 16:38:40,577 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-28 16:38:40,578 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-28 16:38:40,578 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-11-28 16:38:40,578 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-11-28 16:38:40,579 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-28 16:38:40,579 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-28 16:38:40,579 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-28 16:38:40,579 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-28 16:38:40,580 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-28 16:38:40,580 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-28 16:38:40,580 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-28 16:38:40,581 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-28 16:38:40,581 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-28 16:38:40,581 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-28 16:38:40,582 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-28 16:38:40,582 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-28 16:38:40,582 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2019-11-28 16:38:40,582 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-11-28 16:38:40,583 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-28 16:38:40,583 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-11-28 16:38:40,583 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-28 16:38:40,583 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(__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 -> c87f23af740954e6de1a94dd09957e85cd60c58b [2019-11-28 16:38:40,884 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-28 16:38:40,906 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-28 16:38:40,910 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-28 16:38:40,912 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-28 16:38:40,913 INFO L275 PluginConnector]: CDTParser initialized [2019-11-28 16:38:40,914 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/floats-cbmc-regression/float-no-simp6.c [2019-11-28 16:38:40,997 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/69ee28e8d/b55771e2fb6a4b929478c1d2c46b15ab/FLAG900b7dc3d [2019-11-28 16:38:41,395 INFO L306 CDTParser]: Found 1 translation units. [2019-11-28 16:38:41,396 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-cbmc-regression/float-no-simp6.c [2019-11-28 16:38:41,401 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/69ee28e8d/b55771e2fb6a4b929478c1d2c46b15ab/FLAG900b7dc3d [2019-11-28 16:38:41,773 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/69ee28e8d/b55771e2fb6a4b929478c1d2c46b15ab [2019-11-28 16:38:41,777 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-28 16:38:41,779 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-28 16:38:41,780 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-28 16:38:41,780 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-28 16:38:41,784 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-28 16:38:41,785 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:38:41" (1/1) ... [2019-11-28 16:38:41,788 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5bb42088 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:38:41, skipping insertion in model container [2019-11-28 16:38:41,789 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:38:41" (1/1) ... [2019-11-28 16:38:41,797 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-28 16:38:41,824 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-28 16:38:42,008 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 16:38:42,020 INFO L203 MainTranslator]: Completed pre-run [2019-11-28 16:38:42,043 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 16:38:42,060 INFO L208 MainTranslator]: Completed translation [2019-11-28 16:38:42,060 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:38:42 WrapperNode [2019-11-28 16:38:42,061 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-28 16:38:42,062 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-28 16:38:42,062 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-28 16:38:42,062 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-28 16:38:42,074 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:38:42" (1/1) ... [2019-11-28 16:38:42,083 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:38:42" (1/1) ... [2019-11-28 16:38:42,170 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-28 16:38:42,170 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-28 16:38:42,170 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-28 16:38:42,171 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-28 16:38:42,182 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:38:42" (1/1) ... [2019-11-28 16:38:42,182 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:38:42" (1/1) ... [2019-11-28 16:38:42,195 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:38:42" (1/1) ... [2019-11-28 16:38:42,196 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:38:42" (1/1) ... [2019-11-28 16:38:42,207 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:38:42" (1/1) ... [2019-11-28 16:38:42,212 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:38:42" (1/1) ... [2019-11-28 16:38:42,219 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:38:42" (1/1) ... [2019-11-28 16:38:42,222 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-28 16:38:42,223 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-28 16:38:42,223 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-28 16:38:42,223 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-28 16:38:42,224 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:38:42" (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 [2019-11-28 16:38:42,293 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-28 16:38:42,293 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-28 16:38:43,221 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-28 16:38:43,221 INFO L287 CfgBuilder]: Removed 10 assume(true) statements. [2019-11-28 16:38:43,223 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:38:43 BoogieIcfgContainer [2019-11-28 16:38:43,223 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-28 16:38:43,224 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-28 16:38:43,225 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-28 16:38:43,228 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-28 16:38:43,229 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 04:38:41" (1/3) ... [2019-11-28 16:38:43,230 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ef71bff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:38:43, skipping insertion in model container [2019-11-28 16:38:43,230 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:38:42" (2/3) ... [2019-11-28 16:38:43,231 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ef71bff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:38:43, skipping insertion in model container [2019-11-28 16:38:43,231 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:38:43" (3/3) ... [2019-11-28 16:38:43,233 INFO L109 eAbstractionObserver]: Analyzing ICFG float-no-simp6.c [2019-11-28 16:38:43,250 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-28 16:38:43,260 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2019-11-28 16:38:43,283 INFO L249 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2019-11-28 16:38:43,346 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-28 16:38:43,347 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-28 16:38:43,347 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-28 16:38:43,347 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-28 16:38:43,349 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-28 16:38:43,349 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-28 16:38:43,349 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-28 16:38:43,350 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-28 16:38:43,388 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states. [2019-11-28 16:38:43,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-11-28 16:38:43,404 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 16:38:43,408 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-11-28 16:38:43,409 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 16:38:43,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 16:38:43,426 INFO L82 PathProgramCache]: Analyzing trace with hash 925604, now seen corresponding path program 1 times [2019-11-28 16:38:43,457 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-28 16:38:43,457 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [624278034] [2019-11-28 16:38:43,458 INFO L94 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 [2019-11-28 16:38:43,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 16:38:43,599 WARN L262 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-28 16:38:43,604 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 16:38:43,699 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 16:38:43,699 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-11-28 16:38:43,768 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 16:38:43,770 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [624278034] [2019-11-28 16:38:43,770 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-28 16:38:43,770 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2019-11-28 16:38:43,773 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759800934] [2019-11-28 16:38:43,778 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-28 16:38:43,779 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-28 16:38:43,793 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-28 16:38:43,794 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2019-11-28 16:38:43,797 INFO L87 Difference]: Start difference. First operand 16 states. Second operand 6 states. [2019-11-28 16:38:44,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 16:38:44,599 INFO L93 Difference]: Finished difference Result 27 states and 30 transitions. [2019-11-28 16:38:44,606 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-28 16:38:44,607 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 4 [2019-11-28 16:38:44,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 16:38:44,617 INFO L225 Difference]: With dead ends: 27 [2019-11-28 16:38:44,618 INFO L226 Difference]: Without dead ends: 11 [2019-11-28 16:38:44,621 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2019-11-28 16:38:44,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2019-11-28 16:38:44,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2019-11-28 16:38:44,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2019-11-28 16:38:44,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 10 transitions. [2019-11-28 16:38:44,652 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 10 transitions. Word has length 4 [2019-11-28 16:38:44,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 16:38:44,653 INFO L462 AbstractCegarLoop]: Abstraction has 11 states and 10 transitions. [2019-11-28 16:38:44,653 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-28 16:38:44,653 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 10 transitions. [2019-11-28 16:38:44,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-11-28 16:38:44,654 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 16:38:44,654 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-11-28 16:38:44,869 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2019-11-28 16:38:44,869 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 16:38:44,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 16:38:44,870 INFO L82 PathProgramCache]: Analyzing trace with hash 889629862, now seen corresponding path program 1 times [2019-11-28 16:38:44,870 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-28 16:38:44,870 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [262867806] [2019-11-28 16:38:44,871 INFO L94 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 [2019-11-28 16:38:45,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 16:38:45,125 INFO L264 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-28 16:38:45,126 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 16:38:45,161 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 16:38:45,162 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-11-28 16:38:45,242 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 16:38:45,243 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [262867806] [2019-11-28 16:38:45,243 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-28 16:38:45,243 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2019-11-28 16:38:45,244 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325421919] [2019-11-28 16:38:45,245 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-28 16:38:45,246 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-28 16:38:45,246 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-28 16:38:45,246 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2019-11-28 16:38:45,247 INFO L87 Difference]: Start difference. First operand 11 states and 10 transitions. Second operand 6 states. [2019-11-28 16:38:45,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 16:38:45,724 INFO L93 Difference]: Finished difference Result 11 states and 10 transitions. [2019-11-28 16:38:45,725 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-28 16:38:45,725 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 6 [2019-11-28 16:38:45,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 16:38:45,726 INFO L225 Difference]: With dead ends: 11 [2019-11-28 16:38:45,726 INFO L226 Difference]: Without dead ends: 9 [2019-11-28 16:38:45,727 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2019-11-28 16:38:45,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2019-11-28 16:38:45,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2019-11-28 16:38:45,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2019-11-28 16:38:45,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 8 transitions. [2019-11-28 16:38:45,729 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 8 transitions. Word has length 6 [2019-11-28 16:38:45,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 16:38:45,730 INFO L462 AbstractCegarLoop]: Abstraction has 9 states and 8 transitions. [2019-11-28 16:38:45,730 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-28 16:38:45,730 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 8 transitions. [2019-11-28 16:38:45,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-28 16:38:45,731 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 16:38:45,731 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 16:38:45,934 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2019-11-28 16:38:45,935 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 16:38:45,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 16:38:45,936 INFO L82 PathProgramCache]: Analyzing trace with hash 235930184, now seen corresponding path program 1 times [2019-11-28 16:38:45,938 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-28 16:38:45,938 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [404801710] [2019-11-28 16:38:45,939 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 [2019-11-28 16:38:46,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 16:38:46,265 INFO L264 TraceCheckSpWp]: Trace formula consists of 15 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-28 16:38:46,266 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 16:38:46,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 16:38:46,303 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-11-28 16:38:46,352 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 16:38:46,352 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [404801710] [2019-11-28 16:38:46,353 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-28 16:38:46,353 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2019-11-28 16:38:46,353 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178941146] [2019-11-28 16:38:46,354 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-28 16:38:46,354 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-28 16:38:46,355 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-28 16:38:46,355 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2019-11-28 16:38:46,355 INFO L87 Difference]: Start difference. First operand 9 states and 8 transitions. Second operand 6 states. [2019-11-28 16:38:47,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 16:38:47,043 INFO L93 Difference]: Finished difference Result 9 states and 8 transitions. [2019-11-28 16:38:47,050 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-28 16:38:47,050 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 8 [2019-11-28 16:38:47,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 16:38:47,051 INFO L225 Difference]: With dead ends: 9 [2019-11-28 16:38:47,051 INFO L226 Difference]: Without dead ends: 0 [2019-11-28 16:38:47,052 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2019-11-28 16:38:47,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-28 16:38:47,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-28 16:38:47,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-28 16:38:47,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-28 16:38:47,053 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 8 [2019-11-28 16:38:47,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 16:38:47,053 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-28 16:38:47,053 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-28 16:38:47,053 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-28 16:38:47,053 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-28 16:38:47,254 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2019-11-28 16:38:47,258 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-28 16:38:47,262 INFO L246 CegarLoopResult]: For program point L33(line 33) no Hoare annotation was computed. [2019-11-28 16:38:47,262 INFO L246 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-28 16:38:47,262 INFO L246 CegarLoopResult]: For program point L33-1(line 33) no Hoare annotation was computed. [2019-11-28 16:38:47,262 INFO L246 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 33) no Hoare annotation was computed. [2019-11-28 16:38:47,262 INFO L246 CegarLoopResult]: For program point L23(line 23) no Hoare annotation was computed. [2019-11-28 16:38:47,262 INFO L246 CegarLoopResult]: For program point L23-1(line 23) no Hoare annotation was computed. [2019-11-28 16:38:47,262 INFO L246 CegarLoopResult]: For program point L42(line 42) no Hoare annotation was computed. [2019-11-28 16:38:47,262 INFO L246 CegarLoopResult]: For program point L42-1(line 42) no Hoare annotation was computed. [2019-11-28 16:38:47,263 INFO L246 CegarLoopResult]: For program point L36(lines 1 50) no Hoare annotation was computed. [2019-11-28 16:38:47,263 INFO L246 CegarLoopResult]: For program point L3(lines 3 24) no Hoare annotation was computed. [2019-11-28 16:38:47,263 INFO L246 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2019-11-28 16:38:47,263 INFO L246 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-11-28 16:38:47,263 INFO L246 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-11-28 16:38:47,263 INFO L246 CegarLoopResult]: For program point L26(lines 26 34) no Hoare annotation was computed. [2019-11-28 16:38:47,263 INFO L246 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 23) no Hoare annotation was computed. [2019-11-28 16:38:47,263 INFO L246 CegarLoopResult]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 42) no Hoare annotation was computed. [2019-11-28 16:38:47,269 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 04:38:47 BoogieIcfgContainer [2019-11-28 16:38:47,269 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-28 16:38:47,269 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-28 16:38:47,270 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-28 16:38:47,270 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-28 16:38:47,270 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:38:43" (3/4) ... [2019-11-28 16:38:47,274 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-11-28 16:38:47,286 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2019-11-28 16:38:47,287 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2019-11-28 16:38:47,327 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-11-28 16:38:47,327 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-28 16:38:47,329 INFO L168 Benchmark]: Toolchain (without parser) took 5549.97 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 143.7 MB). Free memory was 956.3 MB in the beginning and 1.1 GB in the end (delta: -100.5 MB). Peak memory consumption was 43.1 MB. Max. memory is 11.5 GB. [2019-11-28 16:38:47,329 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 1.0 GB. Free memory is still 981.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 16:38:47,330 INFO L168 Benchmark]: CACSL2BoogieTranslator took 281.03 ms. Allocated memory is still 1.0 GB. Free memory was 956.3 MB in the beginning and 940.2 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 11.5 GB. [2019-11-28 16:38:47,331 INFO L168 Benchmark]: Boogie Procedure Inliner took 108.33 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 143.7 MB). Free memory was 940.2 MB in the beginning and 1.1 GB in the end (delta: -200.0 MB). Peak memory consumption was 9.8 MB. Max. memory is 11.5 GB. [2019-11-28 16:38:47,331 INFO L168 Benchmark]: Boogie Preprocessor took 52.03 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: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. [2019-11-28 16:38:47,332 INFO L168 Benchmark]: RCFGBuilder took 1000.73 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: 13.5 MB). Peak memory consumption was 13.5 MB. Max. memory is 11.5 GB. [2019-11-28 16:38:47,333 INFO L168 Benchmark]: TraceAbstraction took 4044.75 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: 63.2 MB). Peak memory consumption was 63.2 MB. Max. memory is 11.5 GB. [2019-11-28 16:38:47,333 INFO L168 Benchmark]: Witness Printer took 57.46 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. [2019-11-28 16:38:47,337 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 1.0 GB. Free memory is still 981.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 281.03 ms. Allocated memory is still 1.0 GB. Free memory was 956.3 MB in the beginning and 940.2 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 108.33 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 143.7 MB). Free memory was 940.2 MB in the beginning and 1.1 GB in the end (delta: -200.0 MB). Peak memory consumption was 9.8 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 52.03 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: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. * RCFGBuilder took 1000.73 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: 13.5 MB). Peak memory consumption was 13.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 4044.75 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: 63.2 MB). Peak memory consumption was 63.2 MB. Max. memory is 11.5 GB. * Witness Printer took 57.46 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: - PositiveResult [Line: 33]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 23]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 42]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 3 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 16 locations, 3 error locations. Result: SAFE, OverallTime: 3.9s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 2.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 8 SDtfs, 41 SDslu, 0 SDs, 0 SdLazy, 31 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 3 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=16occurred 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, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 0 LocationsWithAnnotation, 0 PreInvPairs, 0 NumberOfFragments, 0 HoareAnnotationTreeSize, 0 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 0 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 18 NumberOfCodeBlocks, 18 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 30 ConstructedInterpolants, 0 QuantifiedInterpolants, 984 SizeOfPredicates, 11 NumberOfNonLiveVariables, 35 ConjunctsInSsa, 14 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...