./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/float-newlib/double_req_bl_1231b.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version ee8e70e7 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/float-newlib/double_req_bl_1231b.c -s /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-2/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 51c288f40d68a666851060907ab6bc13e9c502d2 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/float-newlib/double_req_bl_1231b.c -s /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-2/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 51c288f40d68a666851060907ab6bc13e9c502d2 ............................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.0-ee8e70e [2020-10-24 15:05:43,410 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-24 15:05:43,413 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-24 15:05:43,450 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-24 15:05:43,451 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-24 15:05:43,453 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-24 15:05:43,455 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-24 15:05:43,457 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-24 15:05:43,459 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-24 15:05:43,461 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-24 15:05:43,462 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-24 15:05:43,464 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-24 15:05:43,465 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-24 15:05:43,466 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-24 15:05:43,468 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-24 15:05:43,469 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-24 15:05:43,471 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-24 15:05:43,472 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-24 15:05:43,474 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-24 15:05:43,477 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-24 15:05:43,479 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-24 15:05:43,483 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-24 15:05:43,485 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-24 15:05:43,487 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-24 15:05:43,497 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-24 15:05:43,498 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-24 15:05:43,500 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-24 15:05:43,502 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-24 15:05:43,504 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-24 15:05:43,505 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-24 15:05:43,509 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-24 15:05:43,510 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-24 15:05:43,511 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-24 15:05:43,513 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-24 15:05:43,518 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-24 15:05:43,519 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-24 15:05:43,521 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-24 15:05:43,523 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-24 15:05:43,524 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-24 15:05:43,527 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-24 15:05:43,528 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-24 15:05:43,530 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-24 15:05:43,584 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-24 15:05:43,585 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-24 15:05:43,587 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-24 15:05:43,588 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-24 15:05:43,589 INFO L138 SettingsManager]: * Use SBE=true [2020-10-24 15:05:43,589 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-24 15:05:43,589 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-24 15:05:43,590 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-24 15:05:43,590 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-24 15:05:43,590 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-24 15:05:43,591 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-24 15:05:43,592 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-24 15:05:43,592 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-24 15:05:43,592 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-24 15:05:43,592 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-24 15:05:43,593 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-24 15:05:43,593 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-24 15:05:43,594 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-24 15:05:43,594 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-24 15:05:43,594 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-24 15:05:43,594 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-24 15:05:43,594 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-24 15:05:43,595 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-24 15:05:43,595 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-24 15:05:43,595 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-24 15:05:43,596 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-24 15:05:43,596 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-24 15:05:43,596 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-24 15:05:43,597 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-24 15:05:43,597 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 51c288f40d68a666851060907ab6bc13e9c502d2 [2020-10-24 15:05:44,063 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-24 15:05:44,100 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-24 15:05:44,105 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-24 15:05:44,107 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-24 15:05:44,108 INFO L275 PluginConnector]: CDTParser initialized [2020-10-24 15:05:44,110 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/double_req_bl_1231b.c [2020-10-24 15:05:44,216 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3995b6916/eeb5285d47514818a218640c9cc2b090/FLAG988657309 [2020-10-24 15:05:44,809 INFO L306 CDTParser]: Found 1 translation units. [2020-10-24 15:05:44,810 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_1231b.c [2020-10-24 15:05:44,818 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3995b6916/eeb5285d47514818a218640c9cc2b090/FLAG988657309 [2020-10-24 15:05:45,197 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3995b6916/eeb5285d47514818a218640c9cc2b090 [2020-10-24 15:05:45,202 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-24 15:05:45,211 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-24 15:05:45,216 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-24 15:05:45,216 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-24 15:05:45,221 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-24 15:05:45,222 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 03:05:45" (1/1) ... [2020-10-24 15:05:45,227 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4529dbc6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:05:45, skipping insertion in model container [2020-10-24 15:05:45,227 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 03:05:45" (1/1) ... [2020-10-24 15:05:45,236 INFO L146 MainTranslator]: Starting translation in SV-COMP mode [2020-10-24 15:05:45,259 INFO L179 MainTranslator]: Built tables and reachable declarations [2020-10-24 15:05:45,488 INFO L211 PostProcessor]: Analyzing one entry point: main [2020-10-24 15:05:45,502 INFO L212 MainTranslator]: Completed pre-run [2020-10-24 15:05:45,531 INFO L211 PostProcessor]: Analyzing one entry point: main [2020-10-24 15:05:45,553 INFO L217 MainTranslator]: Completed translation [2020-10-24 15:05:45,555 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:05:45 WrapperNode [2020-10-24 15:05:45,555 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-24 15:05:45,557 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-24 15:05:45,557 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-24 15:05:45,558 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-24 15:05:45,567 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:05:45" (1/1) ... [2020-10-24 15:05:45,591 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:05:45" (1/1) ... [2020-10-24 15:05:45,639 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-24 15:05:45,640 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-24 15:05:45,642 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-24 15:05:45,643 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-24 15:05:45,654 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:05:45" (1/1) ... [2020-10-24 15:05:45,655 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:05:45" (1/1) ... [2020-10-24 15:05:45,664 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:05:45" (1/1) ... [2020-10-24 15:05:45,665 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:05:45" (1/1) ... [2020-10-24 15:05:45,687 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:05:45" (1/1) ... [2020-10-24 15:05:45,698 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:05:45" (1/1) ... [2020-10-24 15:05:45,701 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:05:45" (1/1) ... [2020-10-24 15:05:45,704 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-24 15:05:45,705 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-24 15:05:45,705 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-24 15:05:45,705 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-24 15:05:45,707 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:05:45" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-24 15:05:45,813 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-24 15:05:45,813 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-24 15:05:45,813 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-24 15:05:45,815 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-24 15:05:45,815 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-24 15:05:45,815 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-24 15:05:45,816 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-24 15:05:46,521 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-24 15:05:46,522 INFO L298 CfgBuilder]: Removed 18 assume(true) statements. [2020-10-24 15:05:46,525 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 03:05:46 BoogieIcfgContainer [2020-10-24 15:05:46,525 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-24 15:05:46,530 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-24 15:05:46,530 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-24 15:05:46,535 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-24 15:05:46,535 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 03:05:45" (1/3) ... [2020-10-24 15:05:46,537 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d71f988 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 03:05:46, skipping insertion in model container [2020-10-24 15:05:46,537 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:05:45" (2/3) ... [2020-10-24 15:05:46,538 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d71f988 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 03:05:46, skipping insertion in model container [2020-10-24 15:05:46,538 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 03:05:46" (3/3) ... [2020-10-24 15:05:46,540 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1231b.c [2020-10-24 15:05:46,553 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-24 15:05:46,558 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-24 15:05:46,576 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-24 15:05:46,621 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-24 15:05:46,622 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-24 15:05:46,622 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-24 15:05:46,622 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-24 15:05:46,622 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-24 15:05:46,622 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-24 15:05:46,623 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-24 15:05:46,623 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-24 15:05:46,641 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states. [2020-10-24 15:05:46,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-24 15:05:46,650 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 15:05:46,656 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 15:05:46,657 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 15:05:46,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 15:05:46,664 INFO L82 PathProgramCache]: Analyzing trace with hash -124750094, now seen corresponding path program 1 times [2020-10-24 15:05:46,674 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-24 15:05:46,675 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1494181589] [2020-10-24 15:05:46,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 15:05:46,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 15:05:46,859 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 15:05:46,860 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1494181589] [2020-10-24 15:05:46,861 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-24 15:05:46,862 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-24 15:05:46,863 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279698260] [2020-10-24 15:05:46,868 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-24 15:05:46,868 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-24 15:05:46,882 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-24 15:05:46,884 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-24 15:05:46,886 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 2 states. [2020-10-24 15:05:46,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 15:05:46,907 INFO L93 Difference]: Finished difference Result 57 states and 88 transitions. [2020-10-24 15:05:46,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-24 15:05:46,908 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2020-10-24 15:05:46,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 15:05:46,919 INFO L225 Difference]: With dead ends: 57 [2020-10-24 15:05:46,919 INFO L226 Difference]: Without dead ends: 26 [2020-10-24 15:05:46,923 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 [2020-10-24 15:05:46,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-10-24 15:05:46,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2020-10-24 15:05:46,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-10-24 15:05:46,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 36 transitions. [2020-10-24 15:05:46,961 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 36 transitions. Word has length 11 [2020-10-24 15:05:46,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 15:05:46,962 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 36 transitions. [2020-10-24 15:05:46,962 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-24 15:05:46,962 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 36 transitions. [2020-10-24 15:05:46,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-24 15:05:46,963 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 15:05:46,964 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 15:05:46,964 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-24 15:05:46,964 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 15:05:46,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 15:05:46,965 INFO L82 PathProgramCache]: Analyzing trace with hash -1352831344, now seen corresponding path program 1 times [2020-10-24 15:05:46,966 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-24 15:05:46,966 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [3519484] [2020-10-24 15:05:46,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 15:05:47,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 15:05:47,065 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 15:05:47,065 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [3519484] [2020-10-24 15:05:47,066 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-24 15:05:47,066 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-24 15:05:47,066 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567758957] [2020-10-24 15:05:47,067 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-24 15:05:47,068 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-24 15:05:47,069 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-24 15:05:47,069 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-24 15:05:47,069 INFO L87 Difference]: Start difference. First operand 26 states and 36 transitions. Second operand 4 states. [2020-10-24 15:05:47,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 15:05:47,142 INFO L93 Difference]: Finished difference Result 40 states and 51 transitions. [2020-10-24 15:05:47,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-24 15:05:47,143 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-10-24 15:05:47,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 15:05:47,144 INFO L225 Difference]: With dead ends: 40 [2020-10-24 15:05:47,144 INFO L226 Difference]: Without dead ends: 36 [2020-10-24 15:05:47,145 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-24 15:05:47,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-10-24 15:05:47,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 28. [2020-10-24 15:05:47,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-10-24 15:05:47,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 38 transitions. [2020-10-24 15:05:47,153 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 38 transitions. Word has length 12 [2020-10-24 15:05:47,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 15:05:47,154 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 38 transitions. [2020-10-24 15:05:47,156 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-24 15:05:47,156 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 38 transitions. [2020-10-24 15:05:47,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-24 15:05:47,157 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 15:05:47,162 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 15:05:47,163 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-24 15:05:47,163 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 15:05:47,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 15:05:47,164 INFO L82 PathProgramCache]: Analyzing trace with hash -1913129681, now seen corresponding path program 1 times [2020-10-24 15:05:47,164 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-24 15:05:47,164 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1812804115] [2020-10-24 15:05:47,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 15:05:47,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 15:05:47,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 15:05:47,248 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1812804115] [2020-10-24 15:05:47,249 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-24 15:05:47,249 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-24 15:05:47,249 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134335221] [2020-10-24 15:05:47,250 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-24 15:05:47,250 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-24 15:05:47,250 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-24 15:05:47,251 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-24 15:05:47,251 INFO L87 Difference]: Start difference. First operand 28 states and 38 transitions. Second operand 4 states. [2020-10-24 15:05:47,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 15:05:47,313 INFO L93 Difference]: Finished difference Result 42 states and 53 transitions. [2020-10-24 15:05:47,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-24 15:05:47,314 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-10-24 15:05:47,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 15:05:47,315 INFO L225 Difference]: With dead ends: 42 [2020-10-24 15:05:47,315 INFO L226 Difference]: Without dead ends: 38 [2020-10-24 15:05:47,316 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-24 15:05:47,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-10-24 15:05:47,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 28. [2020-10-24 15:05:47,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-10-24 15:05:47,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 38 transitions. [2020-10-24 15:05:47,322 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 38 transitions. Word has length 13 [2020-10-24 15:05:47,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 15:05:47,322 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 38 transitions. [2020-10-24 15:05:47,322 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-24 15:05:47,322 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 38 transitions. [2020-10-24 15:05:47,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-24 15:05:47,323 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 15:05:47,323 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 15:05:47,323 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-24 15:05:47,324 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 15:05:47,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 15:05:47,324 INFO L82 PathProgramCache]: Analyzing trace with hash -1959363189, now seen corresponding path program 1 times [2020-10-24 15:05:47,325 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-24 15:05:47,325 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [347745609] [2020-10-24 15:05:47,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 15:05:47,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 15:05:47,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 15:05:47,430 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [347745609] [2020-10-24 15:05:47,430 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-24 15:05:47,431 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-24 15:05:47,431 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939409742] [2020-10-24 15:05:47,431 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-24 15:05:47,432 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-24 15:05:47,433 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-24 15:05:47,433 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-24 15:05:47,433 INFO L87 Difference]: Start difference. First operand 28 states and 38 transitions. Second operand 4 states. [2020-10-24 15:05:47,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 15:05:47,496 INFO L93 Difference]: Finished difference Result 44 states and 55 transitions. [2020-10-24 15:05:47,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-24 15:05:47,496 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-10-24 15:05:47,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 15:05:47,498 INFO L225 Difference]: With dead ends: 44 [2020-10-24 15:05:47,498 INFO L226 Difference]: Without dead ends: 40 [2020-10-24 15:05:47,498 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-24 15:05:47,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-10-24 15:05:47,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 28. [2020-10-24 15:05:47,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-10-24 15:05:47,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 38 transitions. [2020-10-24 15:05:47,504 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 38 transitions. Word has length 14 [2020-10-24 15:05:47,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 15:05:47,504 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 38 transitions. [2020-10-24 15:05:47,504 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-24 15:05:47,505 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 38 transitions. [2020-10-24 15:05:47,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-24 15:05:47,505 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 15:05:47,505 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 15:05:47,506 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-24 15:05:47,506 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 15:05:47,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 15:05:47,506 INFO L82 PathProgramCache]: Analyzing trace with hash 1045511114, now seen corresponding path program 1 times [2020-10-24 15:05:47,507 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-24 15:05:47,507 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018526817] [2020-10-24 15:05:47,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 15:05:47,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 15:05:47,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 15:05:47,604 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1018526817] [2020-10-24 15:05:47,604 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-24 15:05:47,605 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-24 15:05:47,605 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070965563] [2020-10-24 15:05:47,605 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-24 15:05:47,606 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-24 15:05:47,606 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-24 15:05:47,607 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-24 15:05:47,607 INFO L87 Difference]: Start difference. First operand 28 states and 38 transitions. Second operand 4 states. [2020-10-24 15:05:47,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 15:05:47,684 INFO L93 Difference]: Finished difference Result 42 states and 53 transitions. [2020-10-24 15:05:47,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-24 15:05:47,685 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2020-10-24 15:05:47,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 15:05:47,686 INFO L225 Difference]: With dead ends: 42 [2020-10-24 15:05:47,687 INFO L226 Difference]: Without dead ends: 38 [2020-10-24 15:05:47,687 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-24 15:05:47,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-10-24 15:05:47,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 28. [2020-10-24 15:05:47,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-10-24 15:05:47,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 38 transitions. [2020-10-24 15:05:47,694 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 38 transitions. Word has length 15 [2020-10-24 15:05:47,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 15:05:47,694 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 38 transitions. [2020-10-24 15:05:47,694 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-24 15:05:47,695 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 38 transitions. [2020-10-24 15:05:47,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-24 15:05:47,695 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 15:05:47,696 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 15:05:47,696 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-24 15:05:47,696 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 15:05:47,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 15:05:47,697 INFO L82 PathProgramCache]: Analyzing trace with hash 1102769416, now seen corresponding path program 1 times [2020-10-24 15:05:47,697 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-24 15:05:47,698 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [726961252] [2020-10-24 15:05:47,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 15:05:47,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-24 15:05:47,728 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-24 15:05:47,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-24 15:05:47,763 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-24 15:05:47,795 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-24 15:05:47,796 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-24 15:05:47,796 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-24 15:05:47,832 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 03:05:47 BoogieIcfgContainer [2020-10-24 15:05:47,833 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-24 15:05:47,833 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-24 15:05:47,833 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-24 15:05:47,834 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-24 15:05:47,834 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 03:05:46" (3/4) ... [2020-10-24 15:05:47,838 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-10-24 15:05:47,838 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-24 15:05:47,841 INFO L168 Benchmark]: Toolchain (without parser) took 2635.02 ms. Allocated memory was 50.3 MB in the beginning and 60.8 MB in the end (delta: 10.5 MB). Free memory was 27.0 MB in the beginning and 28.8 MB in the end (delta: -1.8 MB). Peak memory consumption was 10.6 MB. Max. memory is 16.1 GB. [2020-10-24 15:05:47,842 INFO L168 Benchmark]: CDTParser took 1.19 ms. Allocated memory is still 41.9 MB. Free memory was 19.8 MB in the beginning and 19.7 MB in the end (delta: 69.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-24 15:05:47,843 INFO L168 Benchmark]: CACSL2BoogieTranslator took 340.53 ms. Allocated memory is still 50.3 MB. Free memory was 26.4 MB in the beginning and 27.0 MB in the end (delta: -651.7 kB). Peak memory consumption was 5.6 MB. Max. memory is 16.1 GB. [2020-10-24 15:05:47,844 INFO L168 Benchmark]: Boogie Procedure Inliner took 82.55 ms. Allocated memory is still 50.3 MB. Free memory was 27.0 MB in the beginning and 25.2 MB in the end (delta: 1.8 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-24 15:05:47,845 INFO L168 Benchmark]: Boogie Preprocessor took 63.79 ms. Allocated memory is still 50.3 MB. Free memory was 25.2 MB in the beginning and 23.8 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-24 15:05:47,845 INFO L168 Benchmark]: RCFGBuilder took 820.58 ms. Allocated memory is still 50.3 MB. Free memory was 23.7 MB in the beginning and 30.1 MB in the end (delta: -6.4 MB). Peak memory consumption was 5.9 MB. Max. memory is 16.1 GB. [2020-10-24 15:05:47,846 INFO L168 Benchmark]: TraceAbstraction took 1302.71 ms. Allocated memory was 50.3 MB in the beginning and 60.8 MB in the end (delta: 10.5 MB). Free memory was 29.7 MB in the beginning and 29.3 MB in the end (delta: 449.0 kB). Peak memory consumption was 11.7 MB. Max. memory is 16.1 GB. [2020-10-24 15:05:47,847 INFO L168 Benchmark]: Witness Printer took 5.16 ms. Allocated memory is still 60.8 MB. Free memory was 29.3 MB in the beginning and 28.8 MB in the end (delta: 431.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-24 15:05:47,852 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.19 ms. Allocated memory is still 41.9 MB. Free memory was 19.8 MB in the beginning and 19.7 MB in the end (delta: 69.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 340.53 ms. Allocated memory is still 50.3 MB. Free memory was 26.4 MB in the beginning and 27.0 MB in the end (delta: -651.7 kB). Peak memory consumption was 5.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 82.55 ms. Allocated memory is still 50.3 MB. Free memory was 27.0 MB in the beginning and 25.2 MB in the end (delta: 1.8 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 63.79 ms. Allocated memory is still 50.3 MB. Free memory was 25.2 MB in the beginning and 23.8 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 820.58 ms. Allocated memory is still 50.3 MB. Free memory was 23.7 MB in the beginning and 30.1 MB in the end (delta: -6.4 MB). Peak memory consumption was 5.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1302.71 ms. Allocated memory was 50.3 MB in the beginning and 60.8 MB in the end (delta: 10.5 MB). Free memory was 29.7 MB in the beginning and 29.3 MB in the end (delta: 449.0 kB). Peak memory consumption was 11.7 MB. Max. memory is 16.1 GB. * Witness Printer took 5.16 ms. Allocated memory is still 60.8 MB. Free memory was 29.3 MB in the beginning and 28.8 MB in the end (delta: 431.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 3]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryArithmeticDOUBLE_SMToperation at line 63, overapproximation of someBinaryDOUBLE_SMTComparisonOperation at line 69. Possible FailurePath: [L62] double x = __VERIFIER_nondet_double(); [L63] double y = 0.0 / 0.0; [L18] return x != x; [L64] COND TRUE !isnan_double(x) [L20] __uint32_t msw, lsw; [L23] ieee_double_shape_type ew_u; [L24] ew_u.value = (x) [L25] EXPR ew_u.parts.msw [L25] (msw) = ew_u.parts.msw [L26] EXPR ew_u.parts.lsw [L26] (lsw) = ew_u.parts.lsw [L29-L30] COND FALSE !((msw == 0x00000000 && lsw == 0x00000000) || (msw == 0x80000000 && lsw == 0x00000000)) [L32-L33] COND FALSE !((msw >= 0x00100000 && msw <= 0x7fefffff) || (msw >= 0x80100000 && msw <= 0xffefffff)) [L35-L36] COND FALSE !(( msw <= 0x000fffff) || (msw >= 0x80000000 && msw <= 0x800fffff)) [L39-L40] COND FALSE !((msw == 0x7ff00000 && lsw == 0x00000000) || (msw == 0xfff00000 && lsw == 0x00000000)) [L43] return 0; [L47] COND TRUE __fpclassify_double(x) == 0 [L48] return y; [L66] double res = fmin_double(x, y); [L69] COND TRUE res != x [L3] __assert_fail("0", "double_req_bl_1231b.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 31 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.1s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 209 SDtfs, 40 SDslu, 242 SDs, 0 SdLazy, 84 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 22 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=31occurred 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, 5 MinimizatonAttempts, 40 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 80 NumberOfCodeBlocks, 80 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 60 ConstructedInterpolants, 0 QuantifiedInterpolants, 930 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 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 0.2.0-ee8e70e [2020-10-24 15:05:50,537 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-24 15:05:50,542 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-24 15:05:50,586 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-24 15:05:50,586 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-24 15:05:50,588 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-24 15:05:50,590 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-24 15:05:50,593 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-24 15:05:50,595 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-24 15:05:50,597 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-24 15:05:50,598 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-24 15:05:50,600 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-24 15:05:50,600 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-24 15:05:50,602 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-24 15:05:50,604 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-24 15:05:50,605 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-24 15:05:50,606 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-24 15:05:50,608 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-24 15:05:50,610 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-24 15:05:50,612 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-24 15:05:50,614 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-24 15:05:50,620 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-24 15:05:50,621 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-24 15:05:50,622 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-24 15:05:50,626 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-24 15:05:50,626 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-24 15:05:50,626 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-24 15:05:50,628 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-24 15:05:50,628 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-24 15:05:50,629 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-24 15:05:50,630 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-24 15:05:50,631 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-24 15:05:50,632 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-24 15:05:50,633 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-24 15:05:50,634 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-24 15:05:50,634 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-24 15:05:50,635 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-24 15:05:50,636 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-24 15:05:50,636 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-24 15:05:50,638 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-24 15:05:50,639 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-24 15:05:50,640 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-10-24 15:05:50,668 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-24 15:05:50,668 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-24 15:05:50,670 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-24 15:05:50,670 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-24 15:05:50,671 INFO L138 SettingsManager]: * Use SBE=true [2020-10-24 15:05:50,671 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-24 15:05:50,671 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-24 15:05:50,672 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-24 15:05:50,672 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-24 15:05:50,672 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-24 15:05:50,673 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-24 15:05:50,673 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-24 15:05:50,673 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-10-24 15:05:50,674 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-10-24 15:05:50,674 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-24 15:05:50,674 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-24 15:05:50,675 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-24 15:05:50,675 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-24 15:05:50,675 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-24 15:05:50,676 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-24 15:05:50,676 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-24 15:05:50,676 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-24 15:05:50,677 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-24 15:05:50,677 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-24 15:05:50,677 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-24 15:05:50,678 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-24 15:05:50,678 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-10-24 15:05:50,678 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-10-24 15:05:50,679 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-24 15:05:50,679 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-24 15:05:50,679 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-24 15:05:50,680 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 51c288f40d68a666851060907ab6bc13e9c502d2 [2020-10-24 15:05:51,094 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-24 15:05:51,128 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-24 15:05:51,136 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-24 15:05:51,138 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-24 15:05:51,139 INFO L275 PluginConnector]: CDTParser initialized [2020-10-24 15:05:51,140 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/double_req_bl_1231b.c [2020-10-24 15:05:51,217 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2faa7bdd6/41dc9c93c6114108afe93e97c36793f9/FLAG9dafc018d [2020-10-24 15:05:51,971 INFO L306 CDTParser]: Found 1 translation units. [2020-10-24 15:05:51,972 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_1231b.c [2020-10-24 15:05:51,980 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2faa7bdd6/41dc9c93c6114108afe93e97c36793f9/FLAG9dafc018d [2020-10-24 15:05:52,340 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2faa7bdd6/41dc9c93c6114108afe93e97c36793f9 [2020-10-24 15:05:52,343 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-24 15:05:52,351 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-24 15:05:52,353 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-24 15:05:52,353 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-24 15:05:52,357 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-24 15:05:52,358 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 03:05:52" (1/1) ... [2020-10-24 15:05:52,361 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@304fe9bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:05:52, skipping insertion in model container [2020-10-24 15:05:52,362 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 03:05:52" (1/1) ... [2020-10-24 15:05:52,371 INFO L146 MainTranslator]: Starting translation in SV-COMP mode [2020-10-24 15:05:52,390 INFO L179 MainTranslator]: Built tables and reachable declarations [2020-10-24 15:05:52,631 INFO L211 PostProcessor]: Analyzing one entry point: main [2020-10-24 15:05:52,650 INFO L212 MainTranslator]: Completed pre-run [2020-10-24 15:05:52,680 INFO L211 PostProcessor]: Analyzing one entry point: main [2020-10-24 15:05:52,717 INFO L217 MainTranslator]: Completed translation [2020-10-24 15:05:52,718 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:05:52 WrapperNode [2020-10-24 15:05:52,719 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-24 15:05:52,721 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-24 15:05:52,721 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-24 15:05:52,724 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-24 15:05:52,734 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:05:52" (1/1) ... [2020-10-24 15:05:52,755 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:05:52" (1/1) ... [2020-10-24 15:05:52,806 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-24 15:05:52,808 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-24 15:05:52,809 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-24 15:05:52,809 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-24 15:05:52,820 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:05:52" (1/1) ... [2020-10-24 15:05:52,821 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:05:52" (1/1) ... [2020-10-24 15:05:52,846 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:05:52" (1/1) ... [2020-10-24 15:05:52,847 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:05:52" (1/1) ... [2020-10-24 15:05:52,866 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:05:52" (1/1) ... [2020-10-24 15:05:52,878 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:05:52" (1/1) ... [2020-10-24 15:05:52,888 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:05:52" (1/1) ... [2020-10-24 15:05:52,899 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-24 15:05:52,903 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-24 15:05:52,903 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-24 15:05:52,904 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-24 15:05:52,905 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:05:52" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-24 15:05:53,027 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.float_to_bitvec_DOUBLE [2020-10-24 15:05:53,029 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2020-10-24 15:05:53,030 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-10-24 15:05:53,030 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-24 15:05:53,032 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-10-24 15:05:53,032 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-24 15:05:53,032 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-24 15:05:53,034 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-24 15:05:53,729 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-24 15:05:53,730 INFO L298 CfgBuilder]: Removed 18 assume(true) statements. [2020-10-24 15:05:53,732 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 03:05:53 BoogieIcfgContainer [2020-10-24 15:05:53,732 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-24 15:05:53,734 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-24 15:05:53,734 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-24 15:05:53,738 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-24 15:05:53,738 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 03:05:52" (1/3) ... [2020-10-24 15:05:53,740 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62f10458 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 03:05:53, skipping insertion in model container [2020-10-24 15:05:53,740 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:05:52" (2/3) ... [2020-10-24 15:05:53,741 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62f10458 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 03:05:53, skipping insertion in model container [2020-10-24 15:05:53,741 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 03:05:53" (3/3) ... [2020-10-24 15:05:53,742 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1231b.c [2020-10-24 15:05:53,756 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-24 15:05:53,762 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-24 15:05:53,779 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-24 15:05:53,829 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-24 15:05:53,830 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-24 15:05:53,831 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-24 15:05:53,831 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-24 15:05:53,831 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-24 15:05:53,832 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-24 15:05:53,832 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-24 15:05:53,832 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-24 15:05:53,853 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states. [2020-10-24 15:05:53,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-24 15:05:53,862 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 15:05:53,863 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 15:05:53,864 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 15:05:53,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 15:05:53,871 INFO L82 PathProgramCache]: Analyzing trace with hash -124750094, now seen corresponding path program 1 times [2020-10-24 15:05:53,883 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-24 15:05:53,884 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [112792974] [2020-10-24 15:05:53,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-24 15:05:54,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 15:05:54,891 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 1 conjunts are in the unsatisfiable core [2020-10-24 15:05:54,896 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-24 15:05:54,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 15:05:54,914 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-24 15:05:54,918 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 15:05:54,919 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [112792974] [2020-10-24 15:05:54,920 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-24 15:05:54,920 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-10-24 15:05:54,921 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119705729] [2020-10-24 15:05:54,926 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-24 15:05:54,927 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-24 15:05:54,941 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-24 15:05:54,942 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-24 15:05:54,944 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 2 states. [2020-10-24 15:05:54,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 15:05:54,965 INFO L93 Difference]: Finished difference Result 57 states and 88 transitions. [2020-10-24 15:05:54,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-24 15:05:54,967 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2020-10-24 15:05:54,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 15:05:54,977 INFO L225 Difference]: With dead ends: 57 [2020-10-24 15:05:54,978 INFO L226 Difference]: Without dead ends: 26 [2020-10-24 15:05:54,981 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-24 15:05:55,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-10-24 15:05:55,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2020-10-24 15:05:55,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-10-24 15:05:55,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 36 transitions. [2020-10-24 15:05:55,021 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 36 transitions. Word has length 11 [2020-10-24 15:05:55,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 15:05:55,022 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 36 transitions. [2020-10-24 15:05:55,022 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-24 15:05:55,022 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 36 transitions. [2020-10-24 15:05:55,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-24 15:05:55,023 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 15:05:55,023 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 15:05:55,236 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-10-24 15:05:55,237 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 15:05:55,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 15:05:55,239 INFO L82 PathProgramCache]: Analyzing trace with hash -1352831344, now seen corresponding path program 1 times [2020-10-24 15:05:55,241 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-24 15:05:55,241 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2077818371] [2020-10-24 15:05:55,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-24 15:05:56,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 15:05:56,260 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 3 conjunts are in the unsatisfiable core [2020-10-24 15:05:56,262 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-24 15:05:56,313 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 15:05:56,313 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-24 15:05:56,341 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 15:05:56,342 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2077818371] [2020-10-24 15:05:56,342 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-24 15:05:56,342 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2020-10-24 15:05:56,343 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234458432] [2020-10-24 15:05:56,344 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-24 15:05:56,345 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-24 15:05:56,346 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-24 15:05:56,346 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-24 15:05:56,346 INFO L87 Difference]: Start difference. First operand 26 states and 36 transitions. Second operand 6 states. [2020-10-24 15:05:56,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 15:05:56,461 INFO L93 Difference]: Finished difference Result 50 states and 63 transitions. [2020-10-24 15:05:56,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-24 15:05:56,462 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2020-10-24 15:05:56,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 15:05:56,463 INFO L225 Difference]: With dead ends: 50 [2020-10-24 15:05:56,463 INFO L226 Difference]: Without dead ends: 46 [2020-10-24 15:05:56,465 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-24 15:05:56,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-10-24 15:05:56,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 28. [2020-10-24 15:05:56,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-10-24 15:05:56,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 38 transitions. [2020-10-24 15:05:56,472 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 38 transitions. Word has length 12 [2020-10-24 15:05:56,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 15:05:56,473 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 38 transitions. [2020-10-24 15:05:56,473 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-24 15:05:56,473 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 38 transitions. [2020-10-24 15:05:56,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-24 15:05:56,474 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 15:05:56,474 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 15:05:56,688 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-10-24 15:05:56,688 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 15:05:56,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 15:05:56,690 INFO L82 PathProgramCache]: Analyzing trace with hash 1102769416, now seen corresponding path program 1 times [2020-10-24 15:05:56,691 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-24 15:05:56,692 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1720184361] [2020-10-24 15:05:56,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-24 15:05:57,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-24 15:05:57,792 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-24 15:05:58,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-24 15:05:58,842 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-24 15:05:58,983 INFO L173 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2020-10-24 15:05:58,984 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-24 15:05:59,185 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-10-24 15:05:59,222 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 03:05:59 BoogieIcfgContainer [2020-10-24 15:05:59,223 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-24 15:05:59,225 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-24 15:05:59,225 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-24 15:05:59,225 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-24 15:05:59,226 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 03:05:53" (3/4) ... [2020-10-24 15:05:59,228 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-10-24 15:05:59,281 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-24 15:05:59,281 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-24 15:05:59,284 INFO L168 Benchmark]: Toolchain (without parser) took 6937.43 ms. Allocated memory was 50.3 MB in the beginning and 69.2 MB in the end (delta: 18.9 MB). Free memory was 27.1 MB in the beginning and 35.9 MB in the end (delta: -8.8 MB). Peak memory consumption was 10.6 MB. Max. memory is 16.1 GB. [2020-10-24 15:05:59,285 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 50.3 MB. Free memory was 34.2 MB in the beginning and 34.1 MB in the end (delta: 73.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-24 15:05:59,285 INFO L168 Benchmark]: CACSL2BoogieTranslator took 366.39 ms. Allocated memory is still 50.3 MB. Free memory was 26.5 MB in the beginning and 28.8 MB in the end (delta: -2.3 MB). Peak memory consumption was 7.5 MB. Max. memory is 16.1 GB. [2020-10-24 15:05:59,286 INFO L168 Benchmark]: Boogie Procedure Inliner took 85.84 ms. Allocated memory is still 50.3 MB. Free memory was 28.6 MB in the beginning and 26.8 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-24 15:05:59,287 INFO L168 Benchmark]: Boogie Preprocessor took 90.61 ms. Allocated memory is still 50.3 MB. Free memory was 26.8 MB in the beginning and 25.2 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-24 15:05:59,288 INFO L168 Benchmark]: RCFGBuilder took 829.18 ms. Allocated memory was 50.3 MB in the beginning and 69.2 MB in the end (delta: 18.9 MB). Free memory was 25.0 MB in the beginning and 36.8 MB in the end (delta: -11.8 MB). Peak memory consumption was 8.2 MB. Max. memory is 16.1 GB. [2020-10-24 15:05:59,289 INFO L168 Benchmark]: TraceAbstraction took 5490.10 ms. Allocated memory is still 69.2 MB. Free memory was 36.5 MB in the beginning and 38.4 MB in the end (delta: -1.9 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-24 15:05:59,289 INFO L168 Benchmark]: Witness Printer took 56.62 ms. Allocated memory is still 69.2 MB. Free memory was 38.4 MB in the beginning and 35.9 MB in the end (delta: 2.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-24 15:05:59,294 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 50.3 MB. Free memory was 34.2 MB in the beginning and 34.1 MB in the end (delta: 73.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 366.39 ms. Allocated memory is still 50.3 MB. Free memory was 26.5 MB in the beginning and 28.8 MB in the end (delta: -2.3 MB). Peak memory consumption was 7.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 85.84 ms. Allocated memory is still 50.3 MB. Free memory was 28.6 MB in the beginning and 26.8 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 90.61 ms. Allocated memory is still 50.3 MB. Free memory was 26.8 MB in the beginning and 25.2 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 829.18 ms. Allocated memory was 50.3 MB in the beginning and 69.2 MB in the end (delta: 18.9 MB). Free memory was 25.0 MB in the beginning and 36.8 MB in the end (delta: -11.8 MB). Peak memory consumption was 8.2 MB. Max. memory is 16.1 GB. * TraceAbstraction took 5490.10 ms. Allocated memory is still 69.2 MB. Free memory was 36.5 MB in the beginning and 38.4 MB in the end (delta: -1.9 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 56.62 ms. Allocated memory is still 69.2 MB. Free memory was 38.4 MB in the beginning and 35.9 MB in the end (delta: 2.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 3]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L62] double x = __VERIFIER_nondet_double(); [L63] EXPR 0.0 [L63] EXPR 0.0 [L63] EXPR 0.0 / 0.0 [L63] double y = 0.0 / 0.0; [L18] return x != x; [L64] COND TRUE !isnan_double(x) [L20] __uint32_t msw, lsw; [L23] ieee_double_shape_type ew_u; [L24] ew_u.value = (x) [L25] EXPR ew_u.parts.msw [L25] (msw) = ew_u.parts.msw [L26] EXPR ew_u.parts.lsw [L26] (lsw) = ew_u.parts.lsw [L29-L30] COND FALSE !((msw == 0x00000000 && lsw == 0x00000000) || (msw == 0x80000000 && lsw == 0x00000000)) [L32-L33] COND FALSE !((msw >= 0x00100000 && msw <= 0x7fefffff) || (msw >= 0x80100000 && msw <= 0xffefffff)) [L35-L36] COND FALSE !(( msw <= 0x000fffff) || (msw >= 0x80000000 && msw <= 0x800fffff)) [L39-L40] COND FALSE !((msw == 0x7ff00000 && lsw == 0x00000000) || (msw == 0xfff00000 && lsw == 0x00000000)) [L43] return 0; [L47] COND TRUE __fpclassify_double(x) == 0 [L48] return y; [L66] double res = fmin_double(x, y); [L69] COND TRUE res != x [L3] __assert_fail("0", "double_req_bl_1231b.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 31 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 5.3s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 77 SDtfs, 30 SDslu, 98 SDs, 0 SdLazy, 27 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 44 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=31occurred 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, 18 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 2.8s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 38 NumberOfCodeBlocks, 38 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 42 ConstructedInterpolants, 0 QuantifiedInterpolants, 552 SizeOfPredicates, 1 NumberOfNonLiveVariables, 100 ConjunctsInSsa, 4 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 incorrect! Received shutdown request...