./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/float-newlib/float_req_bl_1211b.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2880296f Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/float-newlib/float_req_bl_1211b.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 46a654e5cd481c0250a48d4dd25ca48ac714310d ............................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/float-newlib/float_req_bl_1211b.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 46a654e5cd481c0250a48d4dd25ca48ac714310d ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000)Received EOF on stdin. stderr output: (error "out of memory") --- Real Ultimate output --- This is Ultimate 0.2.0-2880296 [2020-12-02 16:19:17,398 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-02 16:19:17,403 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-02 16:19:17,463 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-02 16:19:17,464 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-02 16:19:17,471 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-02 16:19:17,476 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-02 16:19:17,483 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-02 16:19:17,487 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-02 16:19:17,493 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-02 16:19:17,495 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-02 16:19:17,497 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-02 16:19:17,498 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-02 16:19:17,499 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-02 16:19:17,503 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-02 16:19:17,504 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-02 16:19:17,505 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-02 16:19:17,508 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-02 16:19:17,514 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-02 16:19:17,516 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-02 16:19:17,518 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-02 16:19:17,519 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-02 16:19:17,520 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-02 16:19:17,521 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-02 16:19:17,524 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-02 16:19:17,525 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-02 16:19:17,525 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-02 16:19:17,526 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-02 16:19:17,527 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-02 16:19:17,528 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-02 16:19:17,528 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-02 16:19:17,529 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-02 16:19:17,530 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-02 16:19:17,531 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-02 16:19:17,532 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-02 16:19:17,532 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-02 16:19:17,533 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-02 16:19:17,533 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-02 16:19:17,534 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-02 16:19:17,535 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-02 16:19:17,536 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-02 16:19:17,537 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-12-02 16:19:17,578 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-02 16:19:17,578 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-02 16:19:17,579 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-02 16:19:17,580 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-02 16:19:17,580 INFO L138 SettingsManager]: * Use SBE=true [2020-12-02 16:19:17,580 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-02 16:19:17,580 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-02 16:19:17,581 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-02 16:19:17,581 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-02 16:19:17,581 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-02 16:19:17,581 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-02 16:19:17,581 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-02 16:19:17,581 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-02 16:19:17,582 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-02 16:19:17,582 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-02 16:19:17,582 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-02 16:19:17,582 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-02 16:19:17,582 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-02 16:19:17,583 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-02 16:19:17,583 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-12-02 16:19:17,583 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-02 16:19:17,583 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-02 16:19:17,584 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-02 16:19:17,584 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-02 16:19:17,584 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-02 16:19:17,584 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-02 16:19:17,584 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-02 16:19:17,584 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-02 16:19:17,585 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-02 16:19:17,585 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/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 46a654e5cd481c0250a48d4dd25ca48ac714310d [2020-12-02 16:19:17,951 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-02 16:19:17,998 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-02 16:19:18,004 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-02 16:19:18,007 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-02 16:19:18,008 INFO L275 PluginConnector]: CDTParser initialized [2020-12-02 16:19:18,009 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1211b.c [2020-12-02 16:19:18,109 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/933d81878/60f54018e29a4d7093d1419902503256/FLAG0964f6ca0 [2020-12-02 16:19:18,811 INFO L306 CDTParser]: Found 1 translation units. [2020-12-02 16:19:18,812 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/float_req_bl_1211b.c [2020-12-02 16:19:18,821 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/933d81878/60f54018e29a4d7093d1419902503256/FLAG0964f6ca0 [2020-12-02 16:19:19,179 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/933d81878/60f54018e29a4d7093d1419902503256 [2020-12-02 16:19:19,185 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-02 16:19:19,187 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-02 16:19:19,197 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-02 16:19:19,197 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-02 16:19:19,204 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-02 16:19:19,205 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 04:19:19" (1/1) ... [2020-12-02 16:19:19,208 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7684b29e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:19:19, skipping insertion in model container [2020-12-02 16:19:19,209 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 04:19:19" (1/1) ... [2020-12-02 16:19:19,242 INFO L146 MainTranslator]: Starting translation in SV-COMP mode [2020-12-02 16:19:19,298 INFO L179 MainTranslator]: Built tables and reachable declarations [2020-12-02 16:19:19,513 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/float_req_bl_1211b.c[2579,2592] [2020-12-02 16:19:19,517 INFO L211 PostProcessor]: Analyzing one entry point: main [2020-12-02 16:19:19,529 INFO L212 MainTranslator]: Completed pre-run [2020-12-02 16:19:19,566 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/float_req_bl_1211b.c[2579,2592] [2020-12-02 16:19:19,567 INFO L211 PostProcessor]: Analyzing one entry point: main [2020-12-02 16:19:19,591 INFO L217 MainTranslator]: Completed translation [2020-12-02 16:19:19,592 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:19:19 WrapperNode [2020-12-02 16:19:19,592 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-02 16:19:19,593 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-02 16:19:19,594 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-02 16:19:19,594 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-02 16:19:19,603 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:19:19" (1/1) ... [2020-12-02 16:19:19,614 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:19:19" (1/1) ... [2020-12-02 16:19:19,660 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-02 16:19:19,661 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-02 16:19:19,661 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-02 16:19:19,661 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-02 16:19:19,671 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:19:19" (1/1) ... [2020-12-02 16:19:19,672 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:19:19" (1/1) ... [2020-12-02 16:19:19,676 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:19:19" (1/1) ... [2020-12-02 16:19:19,677 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:19:19" (1/1) ... [2020-12-02 16:19:19,689 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:19:19" (1/1) ... [2020-12-02 16:19:19,696 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:19:19" (1/1) ... [2020-12-02 16:19:19,699 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:19:19" (1/1) ... [2020-12-02 16:19:19,703 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-02 16:19:19,705 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-02 16:19:19,705 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-02 16:19:19,705 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-02 16:19:19,706 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:19:19" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-02 16:19:19,814 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-02 16:19:19,815 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-02 16:19:19,815 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-12-02 16:19:19,815 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-02 16:19:19,815 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-12-02 16:19:19,815 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-02 16:19:19,815 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-02 16:19:19,815 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-12-02 16:19:19,816 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-02 16:19:19,816 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-02 16:19:20,659 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-02 16:19:20,660 INFO L298 CfgBuilder]: Removed 28 assume(true) statements. [2020-12-02 16:19:20,663 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 04:19:20 BoogieIcfgContainer [2020-12-02 16:19:20,663 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-02 16:19:20,666 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-02 16:19:20,666 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-02 16:19:20,672 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-02 16:19:20,672 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 04:19:19" (1/3) ... [2020-12-02 16:19:20,674 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c58bcca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 04:19:20, skipping insertion in model container [2020-12-02 16:19:20,674 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:19:19" (2/3) ... [2020-12-02 16:19:20,675 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c58bcca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 04:19:20, skipping insertion in model container [2020-12-02 16:19:20,675 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 04:19:20" (3/3) ... [2020-12-02 16:19:20,678 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1211b.c [2020-12-02 16:19:20,708 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-02 16:19:20,716 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-02 16:19:20,741 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-02 16:19:20,792 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-02 16:19:20,793 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-02 16:19:20,793 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-02 16:19:20,793 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-02 16:19:20,793 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-02 16:19:20,794 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-02 16:19:20,794 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-02 16:19:20,794 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-02 16:19:20,827 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states. [2020-12-02 16:19:20,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-02 16:19:20,841 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 16:19:20,843 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 16:19:20,844 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 16:19:20,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 16:19:20,864 INFO L82 PathProgramCache]: Analyzing trace with hash -1888439402, now seen corresponding path program 1 times [2020-12-02 16:19:20,885 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 16:19:20,885 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1849538742] [2020-12-02 16:19:20,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 16:19:21,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 16:19:21,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 16:19:21,288 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1849538742] [2020-12-02 16:19:21,290 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 16:19:21,292 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-02 16:19:21,293 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700045973] [2020-12-02 16:19:21,304 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-02 16:19:21,304 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 16:19:21,339 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-02 16:19:21,341 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-02 16:19:21,346 INFO L87 Difference]: Start difference. First operand 42 states. Second operand 2 states. [2020-12-02 16:19:21,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 16:19:21,420 INFO L93 Difference]: Finished difference Result 82 states and 128 transitions. [2020-12-02 16:19:21,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-02 16:19:21,423 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 15 [2020-12-02 16:19:21,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 16:19:21,457 INFO L225 Difference]: With dead ends: 82 [2020-12-02 16:19:21,457 INFO L226 Difference]: Without dead ends: 39 [2020-12-02 16:19:21,466 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 [2020-12-02 16:19:21,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-12-02 16:19:21,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2020-12-02 16:19:21,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-12-02 16:19:21,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 43 transitions. [2020-12-02 16:19:21,548 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 43 transitions. Word has length 15 [2020-12-02 16:19:21,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 16:19:21,548 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 43 transitions. [2020-12-02 16:19:21,549 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-02 16:19:21,550 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 43 transitions. [2020-12-02 16:19:21,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-02 16:19:21,554 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 16:19:21,554 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 16:19:21,555 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-02 16:19:21,556 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 16:19:21,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 16:19:21,561 INFO L82 PathProgramCache]: Analyzing trace with hash 1291452088, now seen corresponding path program 1 times [2020-12-02 16:19:21,562 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 16:19:21,563 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [634331959] [2020-12-02 16:19:21,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 16:19:21,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 16:19:21,735 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 16:19:21,736 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [634331959] [2020-12-02 16:19:21,736 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 16:19:21,737 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-02 16:19:21,737 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012395717] [2020-12-02 16:19:21,739 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-02 16:19:21,740 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 16:19:21,741 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-02 16:19:21,741 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-02 16:19:21,742 INFO L87 Difference]: Start difference. First operand 39 states and 43 transitions. Second operand 3 states. [2020-12-02 16:19:21,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 16:19:21,761 INFO L93 Difference]: Finished difference Result 42 states and 45 transitions. [2020-12-02 16:19:21,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-02 16:19:21,762 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2020-12-02 16:19:21,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 16:19:21,763 INFO L225 Difference]: With dead ends: 42 [2020-12-02 16:19:21,764 INFO L226 Difference]: Without dead ends: 39 [2020-12-02 16:19:21,765 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-02 16:19:21,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-12-02 16:19:21,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2020-12-02 16:19:21,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-12-02 16:19:21,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 42 transitions. [2020-12-02 16:19:21,772 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 42 transitions. Word has length 18 [2020-12-02 16:19:21,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 16:19:21,772 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 42 transitions. [2020-12-02 16:19:21,773 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-02 16:19:21,773 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 42 transitions. [2020-12-02 16:19:21,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-12-02 16:19:21,774 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 16:19:21,774 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 16:19:21,775 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-02 16:19:21,775 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 16:19:21,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 16:19:21,776 INFO L82 PathProgramCache]: Analyzing trace with hash -182496670, now seen corresponding path program 1 times [2020-12-02 16:19:21,776 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 16:19:21,776 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [354195172] [2020-12-02 16:19:21,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 16:19:21,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-02 16:19:21,842 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-02 16:19:21,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-02 16:19:21,898 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-02 16:19:21,934 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-12-02 16:19:21,935 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-02 16:19:21,935 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-02 16:19:21,998 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 04:19:21 BoogieIcfgContainer [2020-12-02 16:19:21,998 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-02 16:19:22,001 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-02 16:19:22,002 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-02 16:19:22,003 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-02 16:19:22,004 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 04:19:20" (3/4) ... [2020-12-02 16:19:22,008 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-12-02 16:19:22,008 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-02 16:19:22,020 INFO L168 Benchmark]: Toolchain (without parser) took 2829.82 ms. Allocated memory was 41.9 MB in the beginning and 60.8 MB in the end (delta: 18.9 MB). Free memory was 18.0 MB in the beginning and 33.1 MB in the end (delta: -15.1 MB). Peak memory consumption was 5.7 MB. Max. memory is 16.1 GB. [2020-12-02 16:19:22,021 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 41.9 MB. Free memory was 27.3 MB in the beginning and 27.3 MB in the end (delta: 24.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-02 16:19:22,024 INFO L168 Benchmark]: CACSL2BoogieTranslator took 395.89 ms. Allocated memory was 41.9 MB in the beginning and 50.3 MB in the end (delta: 8.4 MB). Free memory was 17.8 MB in the beginning and 23.9 MB in the end (delta: -6.0 MB). Peak memory consumption was 3.5 MB. Max. memory is 16.1 GB. [2020-12-02 16:19:22,025 INFO L168 Benchmark]: Boogie Procedure Inliner took 66.69 ms. Allocated memory is still 50.3 MB. Free memory was 23.9 MB in the beginning and 33.6 MB in the end (delta: -9.8 MB). Peak memory consumption was 5.0 MB. Max. memory is 16.1 GB. [2020-12-02 16:19:22,027 INFO L168 Benchmark]: Boogie Preprocessor took 42.64 ms. Allocated memory is still 50.3 MB. Free memory was 33.6 MB in the beginning and 31.7 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-02 16:19:22,028 INFO L168 Benchmark]: RCFGBuilder took 958.63 ms. Allocated memory is still 50.3 MB. Free memory was 31.7 MB in the beginning and 28.8 MB in the end (delta: 2.9 MB). Peak memory consumption was 12.5 MB. Max. memory is 16.1 GB. [2020-12-02 16:19:22,035 INFO L168 Benchmark]: TraceAbstraction took 1332.75 ms. Allocated memory was 50.3 MB in the beginning and 60.8 MB in the end (delta: 10.5 MB). Free memory was 28.4 MB in the beginning and 33.4 MB in the end (delta: -5.1 MB). Peak memory consumption was 5.8 MB. Max. memory is 16.1 GB. [2020-12-02 16:19:22,036 INFO L168 Benchmark]: Witness Printer took 14.11 ms. Allocated memory is still 60.8 MB. Free memory was 33.4 MB in the beginning and 33.1 MB in the end (delta: 391.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-02 16:19:22,044 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 41.9 MB. Free memory was 27.3 MB in the beginning and 27.3 MB in the end (delta: 24.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 395.89 ms. Allocated memory was 41.9 MB in the beginning and 50.3 MB in the end (delta: 8.4 MB). Free memory was 17.8 MB in the beginning and 23.9 MB in the end (delta: -6.0 MB). Peak memory consumption was 3.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 66.69 ms. Allocated memory is still 50.3 MB. Free memory was 23.9 MB in the beginning and 33.6 MB in the end (delta: -9.8 MB). Peak memory consumption was 5.0 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 42.64 ms. Allocated memory is still 50.3 MB. Free memory was 33.6 MB in the beginning and 31.7 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 958.63 ms. Allocated memory is still 50.3 MB. Free memory was 31.7 MB in the beginning and 28.8 MB in the end (delta: 2.9 MB). Peak memory consumption was 12.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1332.75 ms. Allocated memory was 50.3 MB in the beginning and 60.8 MB in the end (delta: 10.5 MB). Free memory was 28.4 MB in the beginning and 33.4 MB in the end (delta: -5.1 MB). Peak memory consumption was 5.8 MB. Max. memory is 16.1 GB. * Witness Printer took 14.11 ms. Allocated memory is still 60.8 MB. Free memory was 33.4 MB in the beginning and 33.1 MB in the end (delta: 391.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 112]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryArithmeticFLOAT_SMToperation at line 106, overapproximation of bitwiseAnd at line 95, overapproximation of someBinaryFLOAT_SMTComparisonOperation at line 111. Possible FailurePath: [L14] static const float one_modf = 1.0; VAL [one_modf=1] [L106] float x = -1.0f / 0.0f; [L107] float iptr = __VERIFIER_nondet_float(); [L17] __int32_t i0, j0; [L18] __uint32_t i; VAL [one_modf=1] [L20] ieee_float_shape_type gf_u; [L21] gf_u.value = (x) [L22] EXPR gf_u.word [L22] (i0) = gf_u.word [L24] j0 = ((i0 >> 23) & 0xff) - 0x7f VAL [one_modf=1] [L25] COND TRUE j0 < 23 VAL [one_modf=1] [L26] COND TRUE j0 < 0 VAL [one_modf=1] [L28] ieee_float_shape_type sf_u; [L29] sf_u.word = (i0 & 0x80000000) [L30] EXPR sf_u.value [L30] (*iptr) = sf_u.value [L32] return x; VAL [one_modf=1] [L108] float res = modf_float(x, &iptr); [L111] EXPR \read(iptr) [L89] __int32_t ix; VAL [one_modf=1] [L91] ieee_float_shape_type gf_u; [L92] gf_u.value = (x) [L93] EXPR gf_u.word [L93] (ix) = gf_u.word [L95] ix &= 0x7fffffff [L96] return ((ix) == 0x7f800000L); VAL [one_modf=1] [L111] isinf_float(iptr) && !(res == -0.0f && __signbit_float(res) == 1) [L111] EXPR res == -0.0f && __signbit_float(res) == 1 VAL [one_modf=1] [L111] isinf_float(iptr) && !(res == -0.0f && __signbit_float(res) == 1) VAL [one_modf=1] [L111] COND TRUE isinf_float(iptr) && !(res == -0.0f && __signbit_float(res) == 1) [L112] reach_error() VAL [one_modf=1] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 42 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.1s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 89 SDtfs, 0 SDslu, 37 SDs, 0 SdLazy, 5 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=42occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 53 NumberOfCodeBlocks, 53 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 31 ConstructedInterpolants, 0 QuantifiedInterpolants, 502 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.0-2880296 [2020-12-02 16:19:24,630 INFO L177 SettingsManager]: Resetting all preferences to default values... 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[2020-12-02 16:19:24,718 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-02 16:19:24,720 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-02 16:19:24,721 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-02 16:19:24,722 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-02 16:19:24,733 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-02 16:19:24,734 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-02 16:19:24,735 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-02 16:19:24,736 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-02 16:19:24,736 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-02 16:19:24,738 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-02 16:19:24,738 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-02 16:19:24,740 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-12-02 16:19:24,768 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-02 16:19:24,768 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-02 16:19:24,770 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-02 16:19:24,771 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-02 16:19:24,771 INFO L138 SettingsManager]: * Use SBE=true [2020-12-02 16:19:24,771 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-02 16:19:24,772 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-02 16:19:24,772 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-02 16:19:24,772 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-02 16:19:24,773 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-02 16:19:24,773 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-02 16:19:24,773 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-02 16:19:24,773 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-12-02 16:19:24,774 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-12-02 16:19:24,774 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-02 16:19:24,774 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-02 16:19:24,775 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-02 16:19:24,775 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-02 16:19:24,775 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-02 16:19:24,776 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-02 16:19:24,776 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-12-02 16:19:24,776 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-02 16:19:24,777 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-02 16:19:24,777 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-02 16:19:24,777 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-02 16:19:24,778 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-02 16:19:24,778 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-12-02 16:19:24,778 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-12-02 16:19:24,779 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-02 16:19:24,779 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-02 16:19:24,779 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-02 16:19:24,779 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/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 46a654e5cd481c0250a48d4dd25ca48ac714310d [2020-12-02 16:19:25,238 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-02 16:19:25,265 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-02 16:19:25,269 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-02 16:19:25,271 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-02 16:19:25,273 INFO L275 PluginConnector]: CDTParser initialized [2020-12-02 16:19:25,274 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1211b.c [2020-12-02 16:19:25,360 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a2f4716e7/4666ea50e13c4182b21c2bc25eeef5c9/FLAG3e2ebc957 [2020-12-02 16:19:25,983 INFO L306 CDTParser]: Found 1 translation units. [2020-12-02 16:19:25,984 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/float_req_bl_1211b.c [2020-12-02 16:19:26,000 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a2f4716e7/4666ea50e13c4182b21c2bc25eeef5c9/FLAG3e2ebc957 [2020-12-02 16:19:26,366 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a2f4716e7/4666ea50e13c4182b21c2bc25eeef5c9 [2020-12-02 16:19:26,370 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-02 16:19:26,373 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-02 16:19:26,375 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-02 16:19:26,375 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-02 16:19:26,387 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-02 16:19:26,388 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 04:19:26" (1/1) ... [2020-12-02 16:19:26,392 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@123e828f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:19:26, skipping insertion in model container [2020-12-02 16:19:26,393 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 04:19:26" (1/1) ... [2020-12-02 16:19:26,402 INFO L146 MainTranslator]: Starting translation in SV-COMP mode [2020-12-02 16:19:26,425 INFO L179 MainTranslator]: Built tables and reachable declarations [2020-12-02 16:19:26,698 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/float_req_bl_1211b.c[2579,2592] [2020-12-02 16:19:26,703 INFO L211 PostProcessor]: Analyzing one entry point: main [2020-12-02 16:19:26,723 INFO L212 MainTranslator]: Completed pre-run [2020-12-02 16:19:26,765 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/float_req_bl_1211b.c[2579,2592] [2020-12-02 16:19:26,767 INFO L211 PostProcessor]: Analyzing one entry point: main [2020-12-02 16:19:26,792 INFO L217 MainTranslator]: Completed translation [2020-12-02 16:19:26,793 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:19:26 WrapperNode [2020-12-02 16:19:26,793 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-02 16:19:26,795 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-02 16:19:26,795 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-02 16:19:26,795 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-02 16:19:26,804 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:19:26" (1/1) ... [2020-12-02 16:19:26,821 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:19:26" (1/1) ... [2020-12-02 16:19:26,861 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-02 16:19:26,862 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-02 16:19:26,862 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-02 16:19:26,862 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-02 16:19:26,875 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:19:26" (1/1) ... [2020-12-02 16:19:26,875 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:19:26" (1/1) ... [2020-12-02 16:19:26,884 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:19:26" (1/1) ... [2020-12-02 16:19:26,884 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:19:26" (1/1) ... [2020-12-02 16:19:26,926 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:19:26" (1/1) ... [2020-12-02 16:19:26,944 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:19:26" (1/1) ... [2020-12-02 16:19:26,953 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:19:26" (1/1) ... [2020-12-02 16:19:26,964 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-02 16:19:26,967 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-02 16:19:26,970 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-02 16:19:26,973 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-02 16:19:26,975 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:19:26" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-02 16:19:27,122 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.float_to_bitvec_DOUBLE [2020-12-02 16:19:27,123 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4 [2020-12-02 16:19:27,123 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-12-02 16:19:27,125 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-02 16:19:27,125 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2020-12-02 16:19:27,128 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-12-02 16:19:27,128 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-02 16:19:27,129 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-02 16:19:27,129 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2020-12-02 16:19:27,130 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.float_to_bitvec_FLOAT [2020-12-02 16:19:27,130 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2020-12-02 16:19:27,130 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-02 16:19:28,298 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-02 16:19:28,298 INFO L298 CfgBuilder]: Removed 28 assume(true) statements. [2020-12-02 16:19:28,300 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 04:19:28 BoogieIcfgContainer [2020-12-02 16:19:28,301 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-02 16:19:28,303 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-02 16:19:28,303 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-02 16:19:28,308 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-02 16:19:28,308 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 04:19:26" (1/3) ... [2020-12-02 16:19:28,309 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46b9803 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 04:19:28, skipping insertion in model container [2020-12-02 16:19:28,309 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:19:26" (2/3) ... [2020-12-02 16:19:28,310 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46b9803 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 04:19:28, skipping insertion in model container [2020-12-02 16:19:28,310 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 04:19:28" (3/3) ... [2020-12-02 16:19:28,312 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1211b.c [2020-12-02 16:19:28,331 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-02 16:19:28,337 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-02 16:19:28,352 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-02 16:19:28,387 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-02 16:19:28,387 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-02 16:19:28,388 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-02 16:19:28,388 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-02 16:19:28,388 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-02 16:19:28,388 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-02 16:19:28,388 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-02 16:19:28,388 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-02 16:19:28,404 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states. [2020-12-02 16:19:28,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-02 16:19:28,411 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 16:19:28,412 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 16:19:28,412 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 16:19:28,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 16:19:28,420 INFO L82 PathProgramCache]: Analyzing trace with hash -1888439402, now seen corresponding path program 1 times [2020-12-02 16:19:28,436 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-12-02 16:19:28,437 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1435989674] [2020-12-02 16:19:28,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2020-12-02 16:19:28,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 16:19:28,921 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 1 conjunts are in the unsatisfiable core [2020-12-02 16:19:28,930 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-02 16:19:28,978 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 16:19:28,978 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-02 16:19:29,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 16:19:29,005 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1435989674] [2020-12-02 16:19:29,007 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-02 16:19:29,007 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-12-02 16:19:29,009 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826619638] [2020-12-02 16:19:29,018 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-02 16:19:29,019 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-12-02 16:19:29,040 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-02 16:19:29,042 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-02 16:19:29,046 INFO L87 Difference]: Start difference. First operand 42 states. Second operand 2 states. [2020-12-02 16:19:29,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 16:19:29,081 INFO L93 Difference]: Finished difference Result 82 states and 128 transitions. [2020-12-02 16:19:29,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-02 16:19:29,083 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 15 [2020-12-02 16:19:29,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 16:19:29,104 INFO L225 Difference]: With dead ends: 82 [2020-12-02 16:19:29,104 INFO L226 Difference]: Without dead ends: 39 [2020-12-02 16:19:29,109 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-02 16:19:29,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-12-02 16:19:29,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2020-12-02 16:19:29,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-12-02 16:19:29,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 43 transitions. [2020-12-02 16:19:29,171 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 43 transitions. Word has length 15 [2020-12-02 16:19:29,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 16:19:29,172 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 43 transitions. [2020-12-02 16:19:29,172 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-02 16:19:29,172 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 43 transitions. [2020-12-02 16:19:29,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-02 16:19:29,179 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 16:19:29,179 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 16:19:29,394 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-12-02 16:19:29,395 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 16:19:29,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 16:19:29,399 INFO L82 PathProgramCache]: Analyzing trace with hash 1291452088, now seen corresponding path program 1 times [2020-12-02 16:19:29,400 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-12-02 16:19:29,401 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [617070615] [2020-12-02 16:19:29,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2020-12-02 16:19:29,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 16:19:29,845 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 10 conjunts are in the unsatisfiable core [2020-12-02 16:19:29,849 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-02 16:19:31,006 WARN L197 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 32 [2020-12-02 16:19:36,367 WARN L197 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 32 [2020-12-02 16:19:46,330 WARN L197 SmtUtils]: Spent 431.00 ms on a formula simplification that was a NOOP. DAG size: 40 [2020-12-02 16:19:46,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 16:19:46,363 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-02 16:19:50,515 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 16:19:50,516 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [617070615] [2020-12-02 16:19:50,516 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-02 16:19:50,517 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2020-12-02 16:19:50,517 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803957266] [2020-12-02 16:19:50,520 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-02 16:19:50,521 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-12-02 16:19:50,522 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-02 16:19:50,523 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=48, Unknown=6, NotChecked=0, Total=72 [2020-12-02 16:19:50,524 INFO L87 Difference]: Start difference. First operand 39 states and 43 transitions. Second operand 9 states. [2020-12-02 16:19:59,992 WARN L197 SmtUtils]: Spent 1.53 s on a formula simplification that was a NOOP. DAG size: 35 [2020-12-02 16:20:15,293 WARN L197 SmtUtils]: Spent 8.54 s on a formula simplification that was a NOOP. DAG size: 43 [2020-12-02 16:20:30,638 WARN L197 SmtUtils]: Spent 14.00 s on a formula simplification that was a NOOP. DAG size: 53 [2020-12-02 16:20:33,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 16:20:33,387 INFO L93 Difference]: Finished difference Result 54 states and 59 transitions. [2020-12-02 16:20:33,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-02 16:20:33,390 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 18 [2020-12-02 16:20:33,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 16:20:33,392 INFO L225 Difference]: With dead ends: 54 [2020-12-02 16:20:33,392 INFO L226 Difference]: Without dead ends: 26 [2020-12-02 16:20:33,394 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 57.1s TimeCoverageRelationStatistics Valid=42, Invalid=84, Unknown=6, NotChecked=0, Total=132 [2020-12-02 16:20:33,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-12-02 16:20:33,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2020-12-02 16:20:33,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-12-02 16:20:33,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 27 transitions. [2020-12-02 16:20:33,400 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 27 transitions. Word has length 18 [2020-12-02 16:20:33,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 16:20:33,400 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 27 transitions. [2020-12-02 16:20:33,400 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-02 16:20:33,401 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 27 transitions. [2020-12-02 16:20:33,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-12-02 16:20:33,401 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 16:20:33,402 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 16:20:33,615 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-12-02 16:20:33,616 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 16:20:33,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 16:20:33,618 INFO L82 PathProgramCache]: Analyzing trace with hash 1647807069, now seen corresponding path program 1 times [2020-12-02 16:20:33,619 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-12-02 16:20:33,619 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1546280708] [2020-12-02 16:20:33,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2020-12-02 16:20:34,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 16:20:34,134 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 2 conjunts are in the unsatisfiable core [2020-12-02 16:20:34,136 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-02 16:20:34,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 16:20:34,226 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-02 16:20:34,250 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 16:20:34,251 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1546280708] [2020-12-02 16:20:34,251 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-02 16:20:34,251 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2020-12-02 16:20:34,251 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694190255] [2020-12-02 16:20:34,252 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-02 16:20:34,252 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-12-02 16:20:34,253 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-02 16:20:34,253 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-02 16:20:34,253 INFO L87 Difference]: Start difference. First operand 26 states and 27 transitions. Second operand 3 states. [2020-12-02 16:20:34,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 16:20:34,347 INFO L93 Difference]: Finished difference Result 29 states and 29 transitions. [2020-12-02 16:20:34,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-02 16:20:34,348 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2020-12-02 16:20:34,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 16:20:34,350 INFO L225 Difference]: With dead ends: 29 [2020-12-02 16:20:34,350 INFO L226 Difference]: Without dead ends: 26 [2020-12-02 16:20:34,351 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-02 16:20:34,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-12-02 16:20:34,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2020-12-02 16:20:34,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-12-02 16:20:34,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 26 transitions. [2020-12-02 16:20:34,356 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 26 transitions. Word has length 19 [2020-12-02 16:20:34,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 16:20:34,357 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 26 transitions. [2020-12-02 16:20:34,357 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-02 16:20:34,357 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 26 transitions. [2020-12-02 16:20:34,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-12-02 16:20:34,358 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 16:20:34,358 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 16:20:34,571 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-12-02 16:20:34,572 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 16:20:34,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 16:20:34,574 INFO L82 PathProgramCache]: Analyzing trace with hash -1322743609, now seen corresponding path program 1 times [2020-12-02 16:20:34,575 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-12-02 16:20:34,575 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1086951912] [2020-12-02 16:20:34,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2020-12-02 16:20:34,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 16:20:34,935 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 7 conjunts are in the unsatisfiable core [2020-12-02 16:20:34,938 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-02 16:20:35,478 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-02 16:20:35,485 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-02 16:20:35,487 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-02 16:20:35,716 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 16:20:35,717 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-02 16:20:36,653 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 16:20:36,653 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1086951912] [2020-12-02 16:20:36,654 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-02 16:20:36,654 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 9 [2020-12-02 16:20:36,654 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493271059] [2020-12-02 16:20:36,655 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-02 16:20:36,655 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-12-02 16:20:36,656 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-02 16:20:36,656 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-12-02 16:20:36,656 INFO L87 Difference]: Start difference. First operand 26 states and 26 transitions. Second operand 9 states. [2020-12-02 16:20:37,712 WARN L197 SmtUtils]: Spent 249.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 10 [2020-12-02 16:20:38,176 WARN L197 SmtUtils]: Spent 293.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 13 [2020-12-02 16:20:38,657 WARN L197 SmtUtils]: Spent 383.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 14 [2020-12-02 16:20:38,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 16:20:38,724 INFO L93 Difference]: Finished difference Result 30 states and 29 transitions. [2020-12-02 16:20:38,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-02 16:20:38,726 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2020-12-02 16:20:38,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 16:20:38,729 INFO L225 Difference]: With dead ends: 30 [2020-12-02 16:20:38,729 INFO L226 Difference]: Without dead ends: 26 [2020-12-02 16:20:38,730 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 33 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 3 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2020-12-02 16:20:38,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-12-02 16:20:38,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2020-12-02 16:20:38,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-12-02 16:20:38,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 25 transitions. [2020-12-02 16:20:38,739 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 25 transitions. Word has length 21 [2020-12-02 16:20:38,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 16:20:38,740 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 25 transitions. [2020-12-02 16:20:38,740 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-02 16:20:38,740 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 25 transitions. [2020-12-02 16:20:38,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-12-02 16:20:38,741 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 16:20:38,742 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 16:20:38,942 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-12-02 16:20:38,943 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 16:20:38,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 16:20:38,944 INFO L82 PathProgramCache]: Analyzing trace with hash 1202751826, now seen corresponding path program 1 times [2020-12-02 16:20:38,945 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-12-02 16:20:38,945 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [610124846] [2020-12-02 16:20:38,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 6 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with mathsat -unsat_core_generation=3 [2020-12-02 16:20:39,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 16:20:39,356 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 19 conjunts are in the unsatisfiable core [2020-12-02 16:20:39,359 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-02 16:20:40,496 WARN L197 SmtUtils]: Spent 373.00 ms on a formula simplification that was a NOOP. DAG size: 32 [2020-12-02 16:20:46,043 WARN L197 SmtUtils]: Spent 304.00 ms on a formula simplification that was a NOOP. DAG size: 32 [2020-12-02 16:20:56,438 WARN L197 SmtUtils]: Spent 336.00 ms on a formula simplification that was a NOOP. DAG size: 36 [2020-12-02 16:21:10,768 WARN L197 SmtUtils]: Spent 325.00 ms on a formula simplification that was a NOOP. DAG size: 36 [2020-12-02 16:21:29,481 WARN L197 SmtUtils]: Spent 385.00 ms on a formula simplification that was a NOOP. DAG size: 36 [2020-12-02 16:21:53,129 WARN L197 SmtUtils]: Spent 335.00 ms on a formula simplification that was a NOOP. DAG size: 36 [2020-12-02 16:22:20,894 WARN L197 SmtUtils]: Spent 405.00 ms on a formula simplification that was a NOOP. DAG size: 36 [2020-12-02 16:22:20,909 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-02 16:22:20,911 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-02 16:22:29,722 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 16:22:29,722 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-02 16:22:50,498 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 16:22:50,498 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [610124846] [2020-12-02 16:22:50,499 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-02 16:22:50,499 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12, 11] imperfect sequences [] total 19 [2020-12-02 16:22:50,499 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004078839] [2020-12-02 16:22:50,499 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-12-02 16:22:50,500 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-12-02 16:22:50,500 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-12-02 16:22:50,501 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=258, Unknown=42, NotChecked=0, Total=342 [2020-12-02 16:22:50,501 INFO L87 Difference]: Start difference. First operand 26 states and 25 transitions. Second operand 19 states. [2020-12-02 16:23:16,827 WARN L197 SmtUtils]: Spent 1.19 s on a formula simplification that was a NOOP. DAG size: 35 [2020-12-02 16:24:15,857 WARN L197 SmtUtils]: Spent 7.46 s on a formula simplification that was a NOOP. DAG size: 43 [2020-12-02 16:25:08,449 WARN L197 SmtUtils]: Spent 6.77 s on a formula simplification that was a NOOP. DAG size: 41 [2020-12-02 16:25:56,731 WARN L197 SmtUtils]: Spent 11.37 s on a formula simplification that was a NOOP. DAG size: 45 [2020-12-02 16:26:27,665 WARN L195 Executor]: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000) stderr output: (error "out of memory") [2020-12-02 16:26:27,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-02 16:26:27,866 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2020-12-02 16:26:27,868 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000)Received EOF on stdin. stderr output: (error "out of memory") at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:209) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseCheckSatResult(Executor.java:226) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.checkSat(Scriptor.java:153) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.checkSat(ManagedScript.java:138) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.MonolithicImplicationChecker.checkImplication(MonolithicImplicationChecker.java:85) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier$PredicateComparison.compare(PredicateUnifier.java:899) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier$PredicateComparison.(PredicateUnifier.java:773) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:345) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicateForConjunction(PredicateUnifier.java:388) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicateForConjunction(PredicateUnifier.java:229) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.DeterministicInterpolantAutomaton.getOrConstructPredicate(DeterministicInterpolantAutomaton.java:281) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.DeterministicInterpolantAutomaton.constructSuccessorsAndTransitions(DeterministicInterpolantAutomaton.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:78) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.internalSuccessors(AbstractInterpolantAutomaton.java:233) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.internalSuccessors(AbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.TotalizeNwa.internalSuccessors(TotalizeNwa.java:213) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ComplementDeterministicNwa.internalSuccessors(ComplementDeterministicNwa.java:121) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.internalSuccessors(ProductNwa.java:216) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.internalSuccessors(ProductNwa.java:208) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.addInternalsAndSuccessors(NestedWordAutomatonReachableStates.java:1064) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.(NestedWordAutomatonReachableStates.java:966) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates.(NestedWordAutomatonReachableStates.java:187) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.computeDifference(Difference.java:137) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.(Difference.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.computeAutomataDifference(BasicCegarLoop.java:743) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.refineAbstraction(BasicCegarLoop.java:674) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:473) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:372) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResult.iterate(CegarLoopResult.java:138) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterateNew(TraceAbstractionStarter.java:345) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:198) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:150) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: EOF at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1461) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:654) at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:419) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:206) ... 45 more [2020-12-02 16:26:27,875 INFO L168 Benchmark]: Toolchain (without parser) took 421502.70 ms. Allocated memory was 52.4 MB in the beginning and 65.0 MB in the end (delta: 12.6 MB). Free memory was 30.3 MB in the beginning and 31.1 MB in the end (delta: -856.9 kB). Peak memory consumption was 13.9 MB. Max. memory is 16.1 GB. [2020-12-02 16:26:27,876 INFO L168 Benchmark]: CDTParser took 0.36 ms. Allocated memory is still 37.7 MB. Free memory was 20.0 MB in the beginning and 20.0 MB in the end (delta: 44.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-02 16:26:27,877 INFO L168 Benchmark]: CACSL2BoogieTranslator took 419.05 ms. Allocated memory is still 52.4 MB. Free memory was 30.1 MB in the beginning and 30.9 MB in the end (delta: -813.4 kB). Peak memory consumption was 7.7 MB. Max. memory is 16.1 GB. [2020-12-02 16:26:27,878 INFO L168 Benchmark]: Boogie Procedure Inliner took 66.39 ms. Allocated memory is still 52.4 MB. Free memory was 30.9 MB in the beginning and 28.6 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-02 16:26:27,879 INFO L168 Benchmark]: Boogie Preprocessor took 104.03 ms. Allocated memory is still 52.4 MB. Free memory was 28.6 MB in the beginning and 26.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-02 16:26:27,880 INFO L168 Benchmark]: RCFGBuilder took 1333.76 ms. Allocated memory was 52.4 MB in the beginning and 65.0 MB in the end (delta: 12.6 MB). Free memory was 26.6 MB in the beginning and 38.9 MB in the end (delta: -12.3 MB). Peak memory consumption was 9.2 MB. Max. memory is 16.1 GB. [2020-12-02 16:26:27,881 INFO L168 Benchmark]: TraceAbstraction took 419570.94 ms. Allocated memory is still 65.0 MB. Free memory was 38.4 MB in the beginning and 31.1 MB in the end (delta: 7.3 MB). Peak memory consumption was 7.6 MB. Max. memory is 16.1 GB. [2020-12-02 16:26:27,886 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36 ms. Allocated memory is still 37.7 MB. Free memory was 20.0 MB in the beginning and 20.0 MB in the end (delta: 44.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 419.05 ms. Allocated memory is still 52.4 MB. Free memory was 30.1 MB in the beginning and 30.9 MB in the end (delta: -813.4 kB). Peak memory consumption was 7.7 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 66.39 ms. Allocated memory is still 52.4 MB. Free memory was 30.9 MB in the beginning and 28.6 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 104.03 ms. Allocated memory is still 52.4 MB. Free memory was 28.6 MB in the beginning and 26.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1333.76 ms. Allocated memory was 52.4 MB in the beginning and 65.0 MB in the end (delta: 12.6 MB). Free memory was 26.6 MB in the beginning and 38.9 MB in the end (delta: -12.3 MB). Peak memory consumption was 9.2 MB. Max. memory is 16.1 GB. * TraceAbstraction took 419570.94 ms. Allocated memory is still 65.0 MB. Free memory was 38.4 MB in the beginning and 31.1 MB in the end (delta: 7.3 MB). Peak memory consumption was 7.6 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000)Received EOF on stdin. stderr output: (error "out of memory") de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000)Received EOF on stdin. stderr output: (error "out of memory") : de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:209) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...