./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/floats-cbmc-regression/float5.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/floats-cbmc-regression/float5.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 4353b03ed39dd917d13c7cd6163e83d6972334fc ....................................................................................................................................................................................................................................................................... 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/floats-cbmc-regression/float5.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 4353b03ed39dd917d13c7cd6163e83d6972334fc ................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.25-9a8b2e8 [2020-10-20 00:16:03,373 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 00:16:03,376 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 00:16:03,416 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 00:16:03,417 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 00:16:03,426 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 00:16:03,429 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 00:16:03,433 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 00:16:03,435 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 00:16:03,439 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 00:16:03,441 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 00:16:03,442 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 00:16:03,443 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 00:16:03,446 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 00:16:03,447 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 00:16:03,449 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 00:16:03,451 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 00:16:03,452 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 00:16:03,454 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 00:16:03,461 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 00:16:03,472 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 00:16:03,474 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 00:16:03,476 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 00:16:03,476 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 00:16:03,490 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 00:16:03,491 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 00:16:03,491 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 00:16:03,492 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 00:16:03,494 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 00:16:03,495 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 00:16:03,497 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 00:16:03,498 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 00:16:03,500 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 00:16:03,501 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 00:16:03,503 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 00:16:03,504 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 00:16:03,505 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 00:16:03,507 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 00:16:03,507 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 00:16:03,508 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 00:16:03,509 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 00:16:03,510 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-20 00:16:03,550 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 00:16:03,552 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 00:16:03,553 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 00:16:03,554 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 00:16:03,554 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 00:16:03,555 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 00:16:03,555 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-20 00:16:03,555 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-20 00:16:03,556 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-20 00:16:03,556 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 00:16:03,557 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-20 00:16:03,557 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-20 00:16:03,558 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-20 00:16:03,558 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-20 00:16:03,558 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-20 00:16:03,559 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 00:16:03,559 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-20 00:16:03,559 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 00:16:03,559 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 00:16:03,560 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-20 00:16:03,560 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-20 00:16:03,560 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 00:16:03,561 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 00:16:03,561 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-20 00:16:03,561 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-20 00:16:03,561 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-20 00:16:03,562 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-20 00:16:03,562 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-20 00:16:03,562 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 00:16:03,562 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 -> 4353b03ed39dd917d13c7cd6163e83d6972334fc [2020-10-20 00:16:03,818 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 00:16:03,840 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 00:16:03,844 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 00:16:03,846 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 00:16:03,847 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 00:16:03,848 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/floats-cbmc-regression/float5.c [2020-10-20 00:16:03,913 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0c734496b/76c153fd63e34fefaa7a644410ddff51/FLAGe91af9f36 [2020-10-20 00:16:04,375 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 00:16:04,376 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-cbmc-regression/float5.c [2020-10-20 00:16:04,384 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0c734496b/76c153fd63e34fefaa7a644410ddff51/FLAGe91af9f36 [2020-10-20 00:16:04,754 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0c734496b/76c153fd63e34fefaa7a644410ddff51 [2020-10-20 00:16:04,757 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 00:16:04,763 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-20 00:16:04,764 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 00:16:04,765 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 00:16:04,770 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 00:16:04,771 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 12:16:04" (1/1) ... [2020-10-20 00:16:04,774 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11987d15 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:16:04, skipping insertion in model container [2020-10-20 00:16:04,774 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 12:16:04" (1/1) ... [2020-10-20 00:16:04,782 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 00:16:04,803 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 00:16:05,021 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 00:16:05,034 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 00:16:05,051 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 00:16:05,068 INFO L208 MainTranslator]: Completed translation [2020-10-20 00:16:05,069 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:16:05 WrapperNode [2020-10-20 00:16:05,069 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 00:16:05,070 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-20 00:16:05,070 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-20 00:16:05,070 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-20 00:16:05,079 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:16:05" (1/1) ... [2020-10-20 00:16:05,087 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:16:05" (1/1) ... [2020-10-20 00:16:05,107 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-20 00:16:05,107 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 00:16:05,108 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 00:16:05,108 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 00:16:05,116 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:16:05" (1/1) ... [2020-10-20 00:16:05,116 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:16:05" (1/1) ... [2020-10-20 00:16:05,117 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:16:05" (1/1) ... [2020-10-20 00:16:05,117 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:16:05" (1/1) ... [2020-10-20 00:16:05,122 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:16:05" (1/1) ... [2020-10-20 00:16:05,124 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:16:05" (1/1) ... [2020-10-20 00:16:05,125 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:16:05" (1/1) ... [2020-10-20 00:16:05,127 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 00:16:05,128 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 00:16:05,128 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 00:16:05,128 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 00:16:05,129 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:16:05" (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 00:16:05,200 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 00:16:05,201 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 00:16:05,201 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-20 00:16:05,202 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-20 00:16:05,394 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 00:16:05,394 INFO L298 CfgBuilder]: Removed 6 assume(true) statements. [2020-10-20 00:16:05,396 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:16:05 BoogieIcfgContainer [2020-10-20 00:16:05,396 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 00:16:05,398 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-20 00:16:05,398 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-20 00:16:05,402 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-20 00:16:05,402 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 12:16:04" (1/3) ... [2020-10-20 00:16:05,403 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36b71419 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 12:16:05, skipping insertion in model container [2020-10-20 00:16:05,404 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:16:05" (2/3) ... [2020-10-20 00:16:05,404 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36b71419 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 12:16:05, skipping insertion in model container [2020-10-20 00:16:05,404 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:16:05" (3/3) ... [2020-10-20 00:16:05,406 INFO L111 eAbstractionObserver]: Analyzing ICFG float5.c [2020-10-20 00:16:05,419 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-20 00:16:05,427 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-20 00:16:05,456 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-20 00:16:05,493 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-20 00:16:05,493 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-20 00:16:05,494 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-20 00:16:05,494 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 00:16:05,494 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 00:16:05,495 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-20 00:16:05,495 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 00:16:05,495 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-20 00:16:05,514 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states. [2020-10-20 00:16:05,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-10-20 00:16:05,521 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:16:05,522 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-10-20 00:16:05,523 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:16:05,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:16:05,530 INFO L82 PathProgramCache]: Analyzing trace with hash 889508712, now seen corresponding path program 1 times [2020-10-20 00:16:05,540 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 00:16:05,541 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [583316790] [2020-10-20 00:16:05,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 00:16:05,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 00:16:05,729 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 00:16:05,730 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [583316790] [2020-10-20 00:16:05,731 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 00:16:05,732 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-20 00:16:05,733 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979619351] [2020-10-20 00:16:05,738 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-20 00:16:05,738 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 00:16:05,752 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-20 00:16:05,753 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-20 00:16:05,755 INFO L87 Difference]: Start difference. First operand 11 states. Second operand 2 states. [2020-10-20 00:16:05,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 00:16:05,767 INFO L93 Difference]: Finished difference Result 18 states and 19 transitions. [2020-10-20 00:16:05,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-20 00:16:05,769 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 6 [2020-10-20 00:16:05,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 00:16:05,779 INFO L225 Difference]: With dead ends: 18 [2020-10-20 00:16:05,780 INFO L226 Difference]: Without dead ends: 7 [2020-10-20 00:16:05,783 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 00:16:05,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2020-10-20 00:16:05,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2020-10-20 00:16:05,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-10-20 00:16:05,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 6 transitions. [2020-10-20 00:16:05,814 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 6 transitions. Word has length 6 [2020-10-20 00:16:05,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 00:16:05,815 INFO L481 AbstractCegarLoop]: Abstraction has 7 states and 6 transitions. [2020-10-20 00:16:05,815 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-20 00:16:05,815 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 6 transitions. [2020-10-20 00:16:05,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-10-20 00:16:05,816 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:16:05,816 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-10-20 00:16:05,817 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-20 00:16:05,817 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:16:05,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:16:05,818 INFO L82 PathProgramCache]: Analyzing trace with hash 889568294, now seen corresponding path program 1 times [2020-10-20 00:16:05,818 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 00:16:05,818 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2020135051] [2020-10-20 00:16:05,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 00:16:05,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 00:16:05,840 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 00:16:05,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 00:16:05,855 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 00:16:05,876 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 00:16:05,876 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-20 00:16:05,877 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-20 00:16:05,897 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 12:16:05 BoogieIcfgContainer [2020-10-20 00:16:05,898 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-20 00:16:05,898 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 00:16:05,898 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 00:16:05,899 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 00:16:05,899 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:16:05" (3/4) ... [2020-10-20 00:16:05,904 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-10-20 00:16:05,904 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 00:16:05,907 INFO L168 Benchmark]: Toolchain (without parser) took 1147.34 ms. Allocated memory was 35.7 MB in the beginning and 45.6 MB in the end (delta: 10.0 MB). Free memory was 16.1 MB in the beginning and 14.7 MB in the end (delta: 1.4 MB). Peak memory consumption was 11.4 MB. Max. memory is 14.3 GB. [2020-10-20 00:16:05,908 INFO L168 Benchmark]: CDTParser took 0.33 ms. Allocated memory is still 34.1 MB. Free memory was 10.1 MB in the beginning and 10.0 MB in the end (delta: 45.5 kB). Peak memory consumption was 45.5 kB. Max. memory is 14.3 GB. [2020-10-20 00:16:05,909 INFO L168 Benchmark]: CACSL2BoogieTranslator took 305.09 ms. Allocated memory was 35.7 MB in the beginning and 44.0 MB in the end (delta: 8.4 MB). Free memory was 15.3 MB in the beginning and 25.8 MB in the end (delta: -10.5 MB). Peak memory consumption was 9.9 MB. Max. memory is 14.3 GB. [2020-10-20 00:16:05,910 INFO L168 Benchmark]: Boogie Procedure Inliner took 37.15 ms. Allocated memory is still 44.0 MB. Free memory was 25.8 MB in the beginning and 24.2 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.6 MB. Max. memory is 14.3 GB. [2020-10-20 00:16:05,911 INFO L168 Benchmark]: Boogie Preprocessor took 20.02 ms. Allocated memory is still 44.0 MB. Free memory was 24.2 MB in the beginning and 22.9 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.2 MB. Max. memory is 14.3 GB. [2020-10-20 00:16:05,912 INFO L168 Benchmark]: RCFGBuilder took 268.69 ms. Allocated memory was 44.0 MB in the beginning and 45.6 MB in the end (delta: 1.6 MB). Free memory was 22.9 MB in the beginning and 23.2 MB in the end (delta: -304.6 kB). Peak memory consumption was 11.5 MB. Max. memory is 14.3 GB. [2020-10-20 00:16:05,913 INFO L168 Benchmark]: TraceAbstraction took 500.14 ms. Allocated memory is still 45.6 MB. Free memory was 22.7 MB in the beginning and 15.2 MB in the end (delta: 7.5 MB). Peak memory consumption was 7.5 MB. Max. memory is 14.3 GB. [2020-10-20 00:16:05,914 INFO L168 Benchmark]: Witness Printer took 5.90 ms. Allocated memory is still 45.6 MB. Free memory was 15.2 MB in the beginning and 14.7 MB in the end (delta: 514.3 kB). Peak memory consumption was 514.3 kB. Max. memory is 14.3 GB. [2020-10-20 00:16:05,923 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33 ms. Allocated memory is still 34.1 MB. Free memory was 10.1 MB in the beginning and 10.0 MB in the end (delta: 45.5 kB). Peak memory consumption was 45.5 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 305.09 ms. Allocated memory was 35.7 MB in the beginning and 44.0 MB in the end (delta: 8.4 MB). Free memory was 15.3 MB in the beginning and 25.8 MB in the end (delta: -10.5 MB). Peak memory consumption was 9.9 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 37.15 ms. Allocated memory is still 44.0 MB. Free memory was 25.8 MB in the beginning and 24.2 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.6 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 20.02 ms. Allocated memory is still 44.0 MB. Free memory was 24.2 MB in the beginning and 22.9 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.2 MB. Max. memory is 14.3 GB. * RCFGBuilder took 268.69 ms. Allocated memory was 44.0 MB in the beginning and 45.6 MB in the end (delta: 1.6 MB). Free memory was 22.9 MB in the beginning and 23.2 MB in the end (delta: -304.6 kB). Peak memory consumption was 11.5 MB. Max. memory is 14.3 GB. * TraceAbstraction took 500.14 ms. Allocated memory is still 45.6 MB. Free memory was 22.7 MB in the beginning and 15.2 MB in the end (delta: 7.5 MB). Peak memory consumption was 7.5 MB. Max. memory is 14.3 GB. * Witness Printer took 5.90 ms. Allocated memory is still 45.6 MB. Free memory was 15.2 MB in the beginning and 14.7 MB in the end (delta: 514.3 kB). Peak memory consumption was 514.3 kB. Max. memory is 14.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 4]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 14, overapproximation of someBinaryDOUBLEComparisonOperation at line 10, overapproximation of someBinaryArithmeticFLOAToperation at line 12. Possible FailurePath: [L8] float a=__VERIFIER_nondet_float(), b=__VERIFIER_nondet_float(); [L8] float a=__VERIFIER_nondet_float(), b=__VERIFIER_nondet_float(); [L10] COND FALSE !(!(a==1 || a==0.5 || a==2 || a==3 || a==0.1)) [L11] b=a [L12] a/=2 [L13] a*=2 [L14] COND TRUE !(a==b) [L4] __assert_fail("0", "float5.c", 4, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 11 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.3s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 9 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=11occurred 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, 12 NumberOfCodeBlocks, 12 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 5 ConstructedInterpolants, 0 QuantifiedInterpolants, 25 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 00:16:08,102 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 00:16:08,106 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 00:16:08,149 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 00:16:08,150 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 00:16:08,160 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 00:16:08,163 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 00:16:08,166 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 00:16:08,168 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 00:16:08,170 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 00:16:08,171 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 00:16:08,173 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 00:16:08,175 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 00:16:08,178 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 00:16:08,180 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 00:16:08,183 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 00:16:08,185 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 00:16:08,188 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 00:16:08,191 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 00:16:08,195 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 00:16:08,198 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 00:16:08,202 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 00:16:08,204 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 00:16:08,205 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 00:16:08,216 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 00:16:08,217 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 00:16:08,218 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 00:16:08,219 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 00:16:08,221 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 00:16:08,222 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 00:16:08,224 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 00:16:08,225 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 00:16:08,226 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 00:16:08,227 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 00:16:08,229 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 00:16:08,230 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 00:16:08,238 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 00:16:08,239 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 00:16:08,239 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 00:16:08,240 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 00:16:08,241 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 00:16:08,243 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-10-20 00:16:08,283 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 00:16:08,283 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 00:16:08,286 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 00:16:08,286 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 00:16:08,287 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 00:16:08,287 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 00:16:08,287 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-20 00:16:08,287 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-20 00:16:08,288 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 00:16:08,288 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-20 00:16:08,289 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-20 00:16:08,289 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-20 00:16:08,290 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-10-20 00:16:08,290 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-10-20 00:16:08,290 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-20 00:16:08,291 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-20 00:16:08,291 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 00:16:08,291 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-20 00:16:08,292 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 00:16:08,292 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 00:16:08,292 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-20 00:16:08,292 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-20 00:16:08,293 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 00:16:08,293 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 00:16:08,293 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-20 00:16:08,293 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-20 00:16:08,294 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-10-20 00:16:08,294 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-10-20 00:16:08,294 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-20 00:16:08,294 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 00:16:08,295 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-20 00:16:08,295 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 -> 4353b03ed39dd917d13c7cd6163e83d6972334fc [2020-10-20 00:16:08,556 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 00:16:08,569 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 00:16:08,573 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 00:16:08,574 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 00:16:08,575 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 00:16:08,576 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/floats-cbmc-regression/float5.c [2020-10-20 00:16:08,656 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/82189e91d/0b81c96beff546acbb513c4f35a00d92/FLAG6c2f5961a [2020-10-20 00:16:09,205 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 00:16:09,206 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-cbmc-regression/float5.c [2020-10-20 00:16:09,212 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/82189e91d/0b81c96beff546acbb513c4f35a00d92/FLAG6c2f5961a [2020-10-20 00:16:09,576 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/82189e91d/0b81c96beff546acbb513c4f35a00d92 [2020-10-20 00:16:09,580 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 00:16:09,591 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-20 00:16:09,593 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 00:16:09,593 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 00:16:09,597 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 00:16:09,598 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 12:16:09" (1/1) ... [2020-10-20 00:16:09,601 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ec0bf62 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:16:09, skipping insertion in model container [2020-10-20 00:16:09,601 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 12:16:09" (1/1) ... [2020-10-20 00:16:09,609 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 00:16:09,626 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 00:16:09,841 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 00:16:09,858 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 00:16:09,883 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 00:16:09,903 INFO L208 MainTranslator]: Completed translation [2020-10-20 00:16:09,904 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:16:09 WrapperNode [2020-10-20 00:16:09,904 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 00:16:09,905 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-20 00:16:09,905 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-20 00:16:09,905 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-20 00:16:09,913 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:16:09" (1/1) ... [2020-10-20 00:16:09,922 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:16:09" (1/1) ... [2020-10-20 00:16:09,940 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-20 00:16:09,940 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 00:16:09,940 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 00:16:09,940 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 00:16:09,947 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:16:09" (1/1) ... [2020-10-20 00:16:09,948 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:16:09" (1/1) ... [2020-10-20 00:16:09,950 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:16:09" (1/1) ... [2020-10-20 00:16:09,951 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:16:09" (1/1) ... [2020-10-20 00:16:09,958 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:16:09" (1/1) ... [2020-10-20 00:16:09,960 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:16:09" (1/1) ... [2020-10-20 00:16:09,962 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:16:09" (1/1) ... [2020-10-20 00:16:09,965 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 00:16:09,966 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 00:16:09,966 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 00:16:09,967 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 00:16:09,968 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:16:09" (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 00:16:10,031 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 00:16:10,032 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 00:16:10,032 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-10-20 00:16:10,033 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-20 00:16:10,401 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 00:16:10,402 INFO L298 CfgBuilder]: Removed 6 assume(true) statements. [2020-10-20 00:16:10,403 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:16:10 BoogieIcfgContainer [2020-10-20 00:16:10,404 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 00:16:10,405 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-20 00:16:10,405 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-20 00:16:10,409 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-20 00:16:10,409 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 12:16:09" (1/3) ... [2020-10-20 00:16:10,410 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67e49491 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 12:16:10, skipping insertion in model container [2020-10-20 00:16:10,411 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:16:09" (2/3) ... [2020-10-20 00:16:10,411 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67e49491 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 12:16:10, skipping insertion in model container [2020-10-20 00:16:10,411 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:16:10" (3/3) ... [2020-10-20 00:16:10,413 INFO L111 eAbstractionObserver]: Analyzing ICFG float5.c [2020-10-20 00:16:10,425 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-20 00:16:10,432 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-20 00:16:10,447 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-20 00:16:10,467 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-20 00:16:10,468 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-20 00:16:10,468 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-20 00:16:10,468 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 00:16:10,469 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 00:16:10,469 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-20 00:16:10,469 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 00:16:10,470 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-20 00:16:10,484 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states. [2020-10-20 00:16:10,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-10-20 00:16:10,489 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:16:10,490 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-10-20 00:16:10,491 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:16:10,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:16:10,496 INFO L82 PathProgramCache]: Analyzing trace with hash 889508712, now seen corresponding path program 1 times [2020-10-20 00:16:10,507 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 00:16:10,507 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1986071449] [2020-10-20 00:16:10,508 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 00:16:10,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 00:16:10,655 INFO L263 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 1 conjunts are in the unsatisfiable core [2020-10-20 00:16:10,662 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 00:16:10,682 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 00:16:10,682 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-20 00:16:10,687 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 00:16:10,688 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1986071449] [2020-10-20 00:16:10,689 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-20 00:16:10,690 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-10-20 00:16:10,691 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815671474] [2020-10-20 00:16:10,696 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-20 00:16:10,697 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-20 00:16:10,711 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-20 00:16:10,712 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-20 00:16:10,715 INFO L87 Difference]: Start difference. First operand 11 states. Second operand 2 states. [2020-10-20 00:16:10,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 00:16:10,730 INFO L93 Difference]: Finished difference Result 18 states and 19 transitions. [2020-10-20 00:16:10,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-20 00:16:10,732 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 6 [2020-10-20 00:16:10,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 00:16:10,744 INFO L225 Difference]: With dead ends: 18 [2020-10-20 00:16:10,744 INFO L226 Difference]: Without dead ends: 7 [2020-10-20 00:16:10,756 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 10 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 00:16:10,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2020-10-20 00:16:10,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2020-10-20 00:16:10,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-10-20 00:16:10,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 6 transitions. [2020-10-20 00:16:10,787 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 6 transitions. Word has length 6 [2020-10-20 00:16:10,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 00:16:10,787 INFO L481 AbstractCegarLoop]: Abstraction has 7 states and 6 transitions. [2020-10-20 00:16:10,787 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-20 00:16:10,787 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 6 transitions. [2020-10-20 00:16:10,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-10-20 00:16:10,788 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:16:10,788 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-10-20 00:16:10,989 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-10-20 00:16:10,990 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:16:10,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:16:10,991 INFO L82 PathProgramCache]: Analyzing trace with hash 889568294, now seen corresponding path program 1 times [2020-10-20 00:16:10,992 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 00:16:10,993 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1006653701] [2020-10-20 00:16:10,993 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 00:16:11,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 00:16:11,091 INFO L263 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 5 conjunts are in the unsatisfiable core [2020-10-20 00:16:11,092 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 00:16:12,214 WARN L193 SmtUtils]: Spent 970.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 19 [2020-10-20 00:16:17,004 WARN L193 SmtUtils]: Spent 3.29 s on a formula simplification that was a NOOP. DAG size: 21 [2020-10-20 00:16:17,525 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 00:16:17,525 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-20 00:16:23,015 WARN L193 SmtUtils]: Spent 396.00 ms on a formula simplification that was a NOOP. DAG size: 7 [2020-10-20 00:16:23,021 INFO L603 QuantifierPusher]: Distributing 5 disjuncts over 2 conjuncts [2020-10-20 00:16:26,581 WARN L860 $PredicateComparison]: unable to prove that (and (forall ((ULTIMATE.start_main_~a~0 (_ FloatingPoint 8 24))) (or (not (fp.eq ULTIMATE.start_main_~a~0 ((_ to_fp 8 24) c_currentRoundingMode (_ bv3 32)))) (fp.eq (let ((.cse0 ((_ to_fp 8 24) c_currentRoundingMode (_ bv2 32)))) (fp.mul c_currentRoundingMode (fp.div c_currentRoundingMode ULTIMATE.start_main_~a~0 .cse0) .cse0)) ULTIMATE.start_main_~a~0))) (forall ((ULTIMATE.start_main_~a~0 (_ FloatingPoint 8 24))) (or (not (fp.eq ((_ to_fp 11 53) c_currentRoundingMode ULTIMATE.start_main_~a~0) ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 10.0)))) (fp.eq (let ((.cse1 ((_ to_fp 8 24) c_currentRoundingMode (_ bv2 32)))) (fp.mul c_currentRoundingMode (fp.div c_currentRoundingMode ULTIMATE.start_main_~a~0 .cse1) .cse1)) ULTIMATE.start_main_~a~0))) (forall ((ULTIMATE.start_main_~a~0 (_ FloatingPoint 8 24))) (or (not (fp.eq ULTIMATE.start_main_~a~0 ((_ to_fp 8 24) c_currentRoundingMode (_ bv1 32)))) (fp.eq (let ((.cse2 ((_ to_fp 8 24) c_currentRoundingMode (_ bv2 32)))) (fp.mul c_currentRoundingMode (fp.div c_currentRoundingMode ULTIMATE.start_main_~a~0 .cse2) .cse2)) ULTIMATE.start_main_~a~0))) (forall ((ULTIMATE.start_main_~a~0 (_ FloatingPoint 8 24))) (let ((.cse3 ((_ to_fp 8 24) c_currentRoundingMode (_ bv2 32)))) (or (not (fp.eq ULTIMATE.start_main_~a~0 .cse3)) (fp.eq (fp.mul c_currentRoundingMode (fp.div c_currentRoundingMode ULTIMATE.start_main_~a~0 .cse3) .cse3) ULTIMATE.start_main_~a~0)))) (forall ((ULTIMATE.start_main_~a~0 (_ FloatingPoint 8 24))) (or (not (fp.eq ((_ to_fp 11 53) c_currentRoundingMode ULTIMATE.start_main_~a~0) ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 2.0)))) (fp.eq (let ((.cse4 ((_ to_fp 8 24) c_currentRoundingMode (_ bv2 32)))) (fp.mul c_currentRoundingMode (fp.div c_currentRoundingMode ULTIMATE.start_main_~a~0 .cse4) .cse4)) ULTIMATE.start_main_~a~0)))) is different from true [2020-10-20 00:16:30,198 WARN L860 $PredicateComparison]: unable to prove that (and (forall ((ULTIMATE.start_main_~a~0 (_ FloatingPoint 8 24))) (or (not (fp.eq ULTIMATE.start_main_~a~0 ((_ to_fp 8 24) c_currentRoundingMode (_ bv3 32)))) (fp.eq (let ((.cse0 ((_ to_fp 8 24) c_currentRoundingMode (_ bv2 32)))) (fp.mul c_currentRoundingMode (fp.div c_currentRoundingMode ULTIMATE.start_main_~a~0 .cse0) .cse0)) ULTIMATE.start_main_~a~0))) (forall ((v_prenex_1 (_ FloatingPoint 8 24))) (or (fp.eq (let ((.cse1 ((_ to_fp 8 24) c_currentRoundingMode (_ bv2 32)))) (fp.mul c_currentRoundingMode (fp.div c_currentRoundingMode v_prenex_1 .cse1) .cse1)) v_prenex_1) (not (fp.eq ((_ to_fp 11 53) c_currentRoundingMode v_prenex_1) ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 10.0)))))) (forall ((v_prenex_3 (_ FloatingPoint 8 24))) (let ((.cse2 ((_ to_fp 8 24) c_currentRoundingMode (_ bv2 32)))) (or (not (fp.eq v_prenex_3 .cse2)) (fp.eq (fp.mul c_currentRoundingMode (fp.div c_currentRoundingMode v_prenex_3 .cse2) .cse2) v_prenex_3)))) (forall ((v_prenex_2 (_ FloatingPoint 8 24))) (or (fp.eq (let ((.cse3 ((_ to_fp 8 24) c_currentRoundingMode (_ bv2 32)))) (fp.mul c_currentRoundingMode (fp.div c_currentRoundingMode v_prenex_2 .cse3) .cse3)) v_prenex_2) (not (fp.eq v_prenex_2 ((_ to_fp 8 24) c_currentRoundingMode (_ bv1 32)))))) (forall ((v_prenex_4 (_ FloatingPoint 8 24))) (or (not (fp.eq ((_ to_fp 11 53) c_currentRoundingMode v_prenex_4) ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 2.0)))) (fp.eq (let ((.cse4 ((_ to_fp 8 24) c_currentRoundingMode (_ bv2 32)))) (fp.mul c_currentRoundingMode (fp.div c_currentRoundingMode v_prenex_4 .cse4) .cse4)) v_prenex_4)))) is different from true [2020-10-20 00:16:30,200 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 00:16:30,200 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1006653701] [2020-10-20 00:16:30,200 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-20 00:16:30,200 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 5] imperfect sequences [] total 8 [2020-10-20 00:16:30,201 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855615471] [2020-10-20 00:16:30,202 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-20 00:16:30,203 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-20 00:16:30,203 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-20 00:16:30,203 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=29, Unknown=2, NotChecked=22, Total=72 [2020-10-20 00:16:30,204 INFO L87 Difference]: Start difference. First operand 7 states and 6 transitions. Second operand 9 states. [2020-10-20 00:16:32,574 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((ULTIMATE.start_main_~a~0 (_ FloatingPoint 8 24))) (or (not (fp.eq ULTIMATE.start_main_~a~0 ((_ to_fp 8 24) c_currentRoundingMode (_ bv3 32)))) (fp.eq (let ((.cse0 ((_ to_fp 8 24) c_currentRoundingMode (_ bv2 32)))) (fp.mul c_currentRoundingMode (fp.div c_currentRoundingMode ULTIMATE.start_main_~a~0 .cse0) .cse0)) ULTIMATE.start_main_~a~0))) (= c_currentRoundingMode roundNearestTiesToEven) (forall ((v_prenex_1 (_ FloatingPoint 8 24))) (or (fp.eq (let ((.cse1 ((_ to_fp 8 24) c_currentRoundingMode (_ bv2 32)))) (fp.mul c_currentRoundingMode (fp.div c_currentRoundingMode v_prenex_1 .cse1) .cse1)) v_prenex_1) (not (fp.eq ((_ to_fp 11 53) c_currentRoundingMode v_prenex_1) ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 10.0)))))) (forall ((v_prenex_3 (_ FloatingPoint 8 24))) (let ((.cse2 ((_ to_fp 8 24) c_currentRoundingMode (_ bv2 32)))) (or (not (fp.eq v_prenex_3 .cse2)) (fp.eq (fp.mul c_currentRoundingMode (fp.div c_currentRoundingMode v_prenex_3 .cse2) .cse2) v_prenex_3)))) (forall ((v_prenex_2 (_ FloatingPoint 8 24))) (or (fp.eq (let ((.cse3 ((_ to_fp 8 24) c_currentRoundingMode (_ bv2 32)))) (fp.mul c_currentRoundingMode (fp.div c_currentRoundingMode v_prenex_2 .cse3) .cse3)) v_prenex_2) (not (fp.eq v_prenex_2 ((_ to_fp 8 24) c_currentRoundingMode (_ bv1 32)))))) (forall ((v_prenex_4 (_ FloatingPoint 8 24))) (or (not (fp.eq ((_ to_fp 11 53) c_currentRoundingMode v_prenex_4) ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 2.0)))) (fp.eq (let ((.cse4 ((_ to_fp 8 24) c_currentRoundingMode (_ bv2 32)))) (fp.mul c_currentRoundingMode (fp.div c_currentRoundingMode v_prenex_4 .cse4) .cse4)) v_prenex_4)))) is different from false [2020-10-20 00:16:34,646 WARN L860 $PredicateComparison]: unable to prove that (and (forall ((ULTIMATE.start_main_~a~0 (_ FloatingPoint 8 24))) (or (not (fp.eq ULTIMATE.start_main_~a~0 ((_ to_fp 8 24) c_currentRoundingMode (_ bv3 32)))) (fp.eq (let ((.cse0 ((_ to_fp 8 24) c_currentRoundingMode (_ bv2 32)))) (fp.mul c_currentRoundingMode (fp.div c_currentRoundingMode ULTIMATE.start_main_~a~0 .cse0) .cse0)) ULTIMATE.start_main_~a~0))) (= c_currentRoundingMode roundNearestTiesToEven) (forall ((v_prenex_1 (_ FloatingPoint 8 24))) (or (fp.eq (let ((.cse1 ((_ to_fp 8 24) c_currentRoundingMode (_ bv2 32)))) (fp.mul c_currentRoundingMode (fp.div c_currentRoundingMode v_prenex_1 .cse1) .cse1)) v_prenex_1) (not (fp.eq ((_ to_fp 11 53) c_currentRoundingMode v_prenex_1) ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 10.0)))))) (forall ((v_prenex_3 (_ FloatingPoint 8 24))) (let ((.cse2 ((_ to_fp 8 24) c_currentRoundingMode (_ bv2 32)))) (or (not (fp.eq v_prenex_3 .cse2)) (fp.eq (fp.mul c_currentRoundingMode (fp.div c_currentRoundingMode v_prenex_3 .cse2) .cse2) v_prenex_3)))) (forall ((v_prenex_2 (_ FloatingPoint 8 24))) (or (fp.eq (let ((.cse3 ((_ to_fp 8 24) c_currentRoundingMode (_ bv2 32)))) (fp.mul c_currentRoundingMode (fp.div c_currentRoundingMode v_prenex_2 .cse3) .cse3)) v_prenex_2) (not (fp.eq v_prenex_2 ((_ to_fp 8 24) c_currentRoundingMode (_ bv1 32)))))) (forall ((v_prenex_4 (_ FloatingPoint 8 24))) (or (not (fp.eq ((_ to_fp 11 53) c_currentRoundingMode v_prenex_4) ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 2.0)))) (fp.eq (let ((.cse4 ((_ to_fp 8 24) c_currentRoundingMode (_ bv2 32)))) (fp.mul c_currentRoundingMode (fp.div c_currentRoundingMode v_prenex_4 .cse4) .cse4)) v_prenex_4)))) is different from true [2020-10-20 00:16:38,198 WARN L860 $PredicateComparison]: unable to prove that (and (forall ((ULTIMATE.start_main_~a~0 (_ FloatingPoint 8 24))) (or (not (fp.eq ULTIMATE.start_main_~a~0 ((_ to_fp 8 24) c_currentRoundingMode (_ bv3 32)))) (fp.eq (let ((.cse0 ((_ to_fp 8 24) c_currentRoundingMode (_ bv2 32)))) (fp.mul c_currentRoundingMode (fp.div c_currentRoundingMode ULTIMATE.start_main_~a~0 .cse0) .cse0)) ULTIMATE.start_main_~a~0))) (= c_currentRoundingMode roundNearestTiesToEven) (forall ((ULTIMATE.start_main_~a~0 (_ FloatingPoint 8 24))) (or (not (fp.eq ((_ to_fp 11 53) c_currentRoundingMode ULTIMATE.start_main_~a~0) ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 10.0)))) (fp.eq (let ((.cse1 ((_ to_fp 8 24) c_currentRoundingMode (_ bv2 32)))) (fp.mul c_currentRoundingMode (fp.div c_currentRoundingMode ULTIMATE.start_main_~a~0 .cse1) .cse1)) ULTIMATE.start_main_~a~0))) (forall ((ULTIMATE.start_main_~a~0 (_ FloatingPoint 8 24))) (or (not (fp.eq ULTIMATE.start_main_~a~0 ((_ to_fp 8 24) c_currentRoundingMode (_ bv1 32)))) (fp.eq (let ((.cse2 ((_ to_fp 8 24) c_currentRoundingMode (_ bv2 32)))) (fp.mul c_currentRoundingMode (fp.div c_currentRoundingMode ULTIMATE.start_main_~a~0 .cse2) .cse2)) ULTIMATE.start_main_~a~0))) (forall ((ULTIMATE.start_main_~a~0 (_ FloatingPoint 8 24))) (let ((.cse3 ((_ to_fp 8 24) c_currentRoundingMode (_ bv2 32)))) (or (not (fp.eq ULTIMATE.start_main_~a~0 .cse3)) (fp.eq (fp.mul c_currentRoundingMode (fp.div c_currentRoundingMode ULTIMATE.start_main_~a~0 .cse3) .cse3) ULTIMATE.start_main_~a~0)))) (forall ((ULTIMATE.start_main_~a~0 (_ FloatingPoint 8 24))) (or (not (fp.eq ((_ to_fp 11 53) c_currentRoundingMode ULTIMATE.start_main_~a~0) ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 2.0)))) (fp.eq (let ((.cse4 ((_ to_fp 8 24) c_currentRoundingMode (_ bv2 32)))) (fp.mul c_currentRoundingMode (fp.div c_currentRoundingMode ULTIMATE.start_main_~a~0 .cse4) .cse4)) ULTIMATE.start_main_~a~0)))) is different from true [2020-10-20 00:16:49,328 WARN L193 SmtUtils]: Spent 9.27 s on a formula simplification. DAG size of input: 33 DAG size of output: 23 [2020-10-20 00:16:49,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 00:16:49,330 INFO L93 Difference]: Finished difference Result 7 states and 6 transitions. [2020-10-20 00:16:49,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-20 00:16:49,330 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 6 [2020-10-20 00:16:49,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 00:16:49,330 INFO L225 Difference]: With dead ends: 7 [2020-10-20 00:16:49,330 INFO L226 Difference]: Without dead ends: 0 [2020-10-20 00:16:49,332 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 36.6s TimeCoverageRelationStatistics Valid=30, Invalid=37, Unknown=5, NotChecked=60, Total=132 [2020-10-20 00:16:49,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-20 00:16:49,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-20 00:16:49,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-20 00:16:49,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-20 00:16:49,334 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 6 [2020-10-20 00:16:49,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 00:16:49,334 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-20 00:16:49,334 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-20 00:16:49,334 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-20 00:16:49,334 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-20 00:16:49,535 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-10-20 00:16:49,539 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-20 00:16:49,542 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-20 00:16:49,542 INFO L274 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-10-20 00:16:49,543 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-10-20 00:16:49,543 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-20 00:16:49,543 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-10-20 00:16:49,543 INFO L274 CegarLoopResult]: For program point L14(line 14) no Hoare annotation was computed. [2020-10-20 00:16:49,543 INFO L274 CegarLoopResult]: For program point L10(line 10) no Hoare annotation was computed. [2020-10-20 00:16:49,543 INFO L274 CegarLoopResult]: For program point L10-2(line 10) no Hoare annotation was computed. [2020-10-20 00:16:49,543 INFO L274 CegarLoopResult]: For program point L6(lines 6 15) no Hoare annotation was computed. [2020-10-20 00:16:49,543 INFO L274 CegarLoopResult]: For program point L4(line 4) no Hoare annotation was computed. [2020-10-20 00:16:49,544 INFO L274 CegarLoopResult]: For program point L4-1(line 4) no Hoare annotation was computed. [2020-10-20 00:16:49,550 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 12:16:49 BoogieIcfgContainer [2020-10-20 00:16:49,550 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-20 00:16:49,550 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 00:16:49,550 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 00:16:49,551 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 00:16:49,551 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:16:10" (3/4) ... [2020-10-20 00:16:49,555 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-10-20 00:16:49,572 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2020-10-20 00:16:49,573 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-10-20 00:16:49,573 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-10-20 00:16:49,574 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-20 00:16:49,645 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-20 00:16:49,645 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 00:16:49,648 INFO L168 Benchmark]: Toolchain (without parser) took 40064.73 ms. Allocated memory was 43.0 MB in the beginning and 47.7 MB in the end (delta: 4.7 MB). Free memory was 22.8 MB in the beginning and 13.1 MB in the end (delta: 9.7 MB). Peak memory consumption was 14.4 MB. Max. memory is 14.3 GB. [2020-10-20 00:16:49,649 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 32.5 MB. Free memory was 10.2 MB in the beginning and 10.2 MB in the end (delta: 47.4 kB). Peak memory consumption was 47.4 kB. Max. memory is 14.3 GB. [2020-10-20 00:16:49,650 INFO L168 Benchmark]: CACSL2BoogieTranslator took 311.59 ms. Allocated memory was 43.0 MB in the beginning and 43.5 MB in the end (delta: 524.3 kB). Free memory was 21.8 MB in the beginning and 22.7 MB in the end (delta: -891.1 kB). Peak memory consumption was 12.9 MB. Max. memory is 14.3 GB. [2020-10-20 00:16:49,651 INFO L168 Benchmark]: Boogie Procedure Inliner took 35.35 ms. Allocated memory is still 43.5 MB. Free memory was 22.7 MB in the beginning and 21.0 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.8 MB. Max. memory is 14.3 GB. [2020-10-20 00:16:49,651 INFO L168 Benchmark]: Boogie Preprocessor took 25.47 ms. Allocated memory is still 43.5 MB. Free memory was 21.0 MB in the beginning and 19.6 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 14.3 GB. [2020-10-20 00:16:49,653 INFO L168 Benchmark]: RCFGBuilder took 437.78 ms. Allocated memory was 43.5 MB in the beginning and 45.6 MB in the end (delta: 2.1 MB). Free memory was 19.6 MB in the beginning and 25.9 MB in the end (delta: -6.2 MB). Peak memory consumption was 10.4 MB. Max. memory is 14.3 GB. [2020-10-20 00:16:49,660 INFO L168 Benchmark]: TraceAbstraction took 39144.87 ms. Allocated memory was 45.6 MB in the beginning and 47.7 MB in the end (delta: 2.1 MB). Free memory was 25.4 MB in the beginning and 16.2 MB in the end (delta: 9.2 MB). Peak memory consumption was 11.3 MB. Max. memory is 14.3 GB. [2020-10-20 00:16:49,661 INFO L168 Benchmark]: Witness Printer took 95.30 ms. Allocated memory is still 47.7 MB. Free memory was 15.8 MB in the beginning and 13.1 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 14.3 GB. [2020-10-20 00:16:49,673 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 32.5 MB. Free memory was 10.2 MB in the beginning and 10.2 MB in the end (delta: 47.4 kB). Peak memory consumption was 47.4 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 311.59 ms. Allocated memory was 43.0 MB in the beginning and 43.5 MB in the end (delta: 524.3 kB). Free memory was 21.8 MB in the beginning and 22.7 MB in the end (delta: -891.1 kB). Peak memory consumption was 12.9 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 35.35 ms. Allocated memory is still 43.5 MB. Free memory was 22.7 MB in the beginning and 21.0 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.8 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 25.47 ms. Allocated memory is still 43.5 MB. Free memory was 21.0 MB in the beginning and 19.6 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 14.3 GB. * RCFGBuilder took 437.78 ms. Allocated memory was 43.5 MB in the beginning and 45.6 MB in the end (delta: 2.1 MB). Free memory was 19.6 MB in the beginning and 25.9 MB in the end (delta: -6.2 MB). Peak memory consumption was 10.4 MB. Max. memory is 14.3 GB. * TraceAbstraction took 39144.87 ms. Allocated memory was 45.6 MB in the beginning and 47.7 MB in the end (delta: 2.1 MB). Free memory was 25.4 MB in the beginning and 16.2 MB in the end (delta: 9.2 MB). Peak memory consumption was 11.3 MB. Max. memory is 14.3 GB. * Witness Printer took 95.30 ms. Allocated memory is still 47.7 MB. Free memory was 15.8 MB in the beginning and 13.1 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 14.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 11 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 39.0s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 19.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 10 SDtfs, 0 SDslu, 1 SDs, 0 SdLazy, 3 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 36.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=11occurred 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, 2 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, 0.1s SatisfiabilityAnalysisTime, 19.1s InterpolantComputationTime, 12 NumberOfCodeBlocks, 12 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 20 ConstructedInterpolants, 2 QuantifiedInterpolants, 1590 SizeOfPredicates, 4 NumberOfNonLiveVariables, 58 ConjunctsInSsa, 6 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 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 proved your program to be correct! Received shutdown request...