./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/float-newlib/float_req_bl_1032d.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version ee8e70e7 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/float-newlib/float_req_bl_1032d.c -s /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 488a794df502f47f24575a712dad386c6d67b377 .............................................................................................................................................................................................................................................................................................. Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/float-newlib/float_req_bl_1032d.c -s /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 488a794df502f47f24575a712dad386c6d67b377 .................................................................................................................................................................................................................................................................................................................................................................................................................... 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-ee8e70e [2020-10-24 15:08:50,311 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-24 15:08:50,314 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-24 15:08:50,351 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-24 15:08:50,352 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-24 15:08:50,353 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-24 15:08:50,355 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-24 15:08:50,358 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-24 15:08:50,363 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-24 15:08:50,365 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-24 15:08:50,366 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-24 15:08:50,368 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-24 15:08:50,372 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-24 15:08:50,376 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-24 15:08:50,378 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-24 15:08:50,381 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-24 15:08:50,382 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-24 15:08:50,389 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-24 15:08:50,393 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-24 15:08:50,396 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-24 15:08:50,403 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-24 15:08:50,408 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-24 15:08:50,409 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-24 15:08:50,410 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-24 15:08:50,419 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-24 15:08:50,420 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-24 15:08:50,421 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-24 15:08:50,426 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-24 15:08:50,427 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-24 15:08:50,428 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-24 15:08:50,429 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-24 15:08:50,432 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-24 15:08:50,437 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-24 15:08:50,439 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-24 15:08:50,441 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-24 15:08:50,441 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-24 15:08:50,442 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-24 15:08:50,443 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-24 15:08:50,443 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-24 15:08:50,445 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-24 15:08:50,447 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-24 15:08:50,449 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-24 15:08:50,505 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-24 15:08:50,506 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-24 15:08:50,510 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-24 15:08:50,510 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-24 15:08:50,510 INFO L138 SettingsManager]: * Use SBE=true [2020-10-24 15:08:50,511 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-24 15:08:50,511 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-24 15:08:50,511 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-24 15:08:50,511 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-24 15:08:50,512 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-24 15:08:50,513 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-24 15:08:50,513 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-24 15:08:50,513 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-24 15:08:50,514 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-24 15:08:50,514 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-24 15:08:50,514 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-24 15:08:50,514 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-24 15:08:50,515 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-24 15:08:50,515 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-24 15:08:50,515 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-24 15:08:50,515 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-24 15:08:50,515 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-24 15:08:50,516 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-24 15:08:50,516 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-24 15:08:50,516 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-24 15:08:50,516 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-24 15:08:50,517 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-24 15:08:50,517 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-24 15:08:50,517 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-24 15:08:50,517 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 488a794df502f47f24575a712dad386c6d67b377 [2020-10-24 15:08:50,993 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-24 15:08:51,022 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-24 15:08:51,025 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-24 15:08:51,027 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-24 15:08:51,028 INFO L275 PluginConnector]: CDTParser initialized [2020-10-24 15:08:51,029 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/float_req_bl_1032d.c [2020-10-24 15:08:51,144 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9f3950aba/5b182db9db9f445aa5fc3c24aa95ece3/FLAG96effb161 [2020-10-24 15:08:51,853 INFO L306 CDTParser]: Found 1 translation units. [2020-10-24 15:08:51,856 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/float-newlib/float_req_bl_1032d.c [2020-10-24 15:08:51,868 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9f3950aba/5b182db9db9f445aa5fc3c24aa95ece3/FLAG96effb161 [2020-10-24 15:08:52,166 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9f3950aba/5b182db9db9f445aa5fc3c24aa95ece3 [2020-10-24 15:08:52,169 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-24 15:08:52,180 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-24 15:08:52,185 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-24 15:08:52,185 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-24 15:08:52,189 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-24 15:08:52,191 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 03:08:52" (1/1) ... [2020-10-24 15:08:52,197 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@17a2fa85 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:08:52, skipping insertion in model container [2020-10-24 15:08:52,198 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 03:08:52" (1/1) ... [2020-10-24 15:08:52,209 INFO L146 MainTranslator]: Starting translation in SV-COMP mode [2020-10-24 15:08:52,232 INFO L179 MainTranslator]: Built tables and reachable declarations [2020-10-24 15:08:52,460 INFO L211 PostProcessor]: Analyzing one entry point: main [2020-10-24 15:08:52,471 INFO L212 MainTranslator]: Completed pre-run [2020-10-24 15:08:52,499 INFO L211 PostProcessor]: Analyzing one entry point: main [2020-10-24 15:08:52,517 INFO L217 MainTranslator]: Completed translation [2020-10-24 15:08:52,517 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:08:52 WrapperNode [2020-10-24 15:08:52,518 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-24 15:08:52,519 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-24 15:08:52,519 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-24 15:08:52,519 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-24 15:08:52,528 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:08:52" (1/1) ... [2020-10-24 15:08:52,538 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:08:52" (1/1) ... [2020-10-24 15:08:52,565 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-24 15:08:52,566 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-24 15:08:52,566 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-24 15:08:52,566 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-24 15:08:52,576 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:08:52" (1/1) ... [2020-10-24 15:08:52,576 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:08:52" (1/1) ... [2020-10-24 15:08:52,580 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:08:52" (1/1) ... [2020-10-24 15:08:52,580 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:08:52" (1/1) ... [2020-10-24 15:08:52,590 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:08:52" (1/1) ... [2020-10-24 15:08:52,596 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:08:52" (1/1) ... [2020-10-24 15:08:52,598 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:08:52" (1/1) ... [2020-10-24 15:08:52,601 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-24 15:08:52,602 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-24 15:08:52,602 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-24 15:08:52,602 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-24 15:08:52,603 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:08:52" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-24 15:08:52,675 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-24 15:08:52,675 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-24 15:08:52,675 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-24 15:08:52,675 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-24 15:08:52,676 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-24 15:08:52,676 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-24 15:08:52,676 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-24 15:08:52,676 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-24 15:08:52,676 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-24 15:08:53,112 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-24 15:08:53,113 INFO L298 CfgBuilder]: Removed 16 assume(true) statements. [2020-10-24 15:08:53,115 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 03:08:53 BoogieIcfgContainer [2020-10-24 15:08:53,115 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-24 15:08:53,117 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-24 15:08:53,117 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-24 15:08:53,121 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-24 15:08:53,122 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 03:08:52" (1/3) ... [2020-10-24 15:08:53,123 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66da4504 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 03:08:53, skipping insertion in model container [2020-10-24 15:08:53,123 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:08:52" (2/3) ... [2020-10-24 15:08:53,123 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66da4504 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 03:08:53, skipping insertion in model container [2020-10-24 15:08:53,124 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 03:08:53" (3/3) ... [2020-10-24 15:08:53,125 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1032d.c [2020-10-24 15:08:53,137 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-24 15:08:53,143 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-24 15:08:53,154 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-24 15:08:53,179 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-24 15:08:53,180 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-24 15:08:53,180 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-24 15:08:53,180 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-24 15:08:53,180 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-24 15:08:53,181 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-24 15:08:53,181 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-24 15:08:53,181 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-24 15:08:53,200 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states. [2020-10-24 15:08:53,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-24 15:08:53,206 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 15:08:53,207 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 15:08:53,207 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 15:08:53,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 15:08:53,214 INFO L82 PathProgramCache]: Analyzing trace with hash -592327338, now seen corresponding path program 1 times [2020-10-24 15:08:53,223 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-24 15:08:53,223 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095742444] [2020-10-24 15:08:53,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 15:08:53,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 15:08:53,378 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 15:08:53,378 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2095742444] [2020-10-24 15:08:53,379 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-24 15:08:53,379 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-24 15:08:53,380 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672607862] [2020-10-24 15:08:53,385 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-24 15:08:53,385 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-24 15:08:53,400 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-24 15:08:53,400 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-24 15:08:53,403 INFO L87 Difference]: Start difference. First operand 25 states. Second operand 2 states. [2020-10-24 15:08:53,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 15:08:53,420 INFO L93 Difference]: Finished difference Result 47 states and 69 transitions. [2020-10-24 15:08:53,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-24 15:08:53,422 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 12 [2020-10-24 15:08:53,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 15:08:53,433 INFO L225 Difference]: With dead ends: 47 [2020-10-24 15:08:53,433 INFO L226 Difference]: Without dead ends: 21 [2020-10-24 15:08:53,448 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-24 15:08:53,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2020-10-24 15:08:53,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2020-10-24 15:08:53,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-10-24 15:08:53,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 25 transitions. [2020-10-24 15:08:53,505 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 25 transitions. Word has length 12 [2020-10-24 15:08:53,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 15:08:53,506 INFO L481 AbstractCegarLoop]: Abstraction has 21 states and 25 transitions. [2020-10-24 15:08:53,506 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-24 15:08:53,507 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 25 transitions. [2020-10-24 15:08:53,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-24 15:08:53,508 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 15:08:53,509 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 15:08:53,509 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-24 15:08:53,510 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 15:08:53,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 15:08:53,515 INFO L82 PathProgramCache]: Analyzing trace with hash 1651159701, now seen corresponding path program 1 times [2020-10-24 15:08:53,515 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-24 15:08:53,516 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140477389] [2020-10-24 15:08:53,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 15:08:53,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-24 15:08:53,615 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-24 15:08:53,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-24 15:08:53,732 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-24 15:08:53,789 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-24 15:08:53,790 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-24 15:08:53,794 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-24 15:08:53,852 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 03:08:53 BoogieIcfgContainer [2020-10-24 15:08:53,852 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-24 15:08:53,853 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-24 15:08:53,854 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-24 15:08:53,855 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-24 15:08:53,855 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 03:08:53" (3/4) ... [2020-10-24 15:08:53,860 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-10-24 15:08:53,860 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-24 15:08:53,868 INFO L168 Benchmark]: Toolchain (without parser) took 1688.58 ms. Allocated memory was 50.3 MB in the beginning and 65.0 MB in the end (delta: 14.7 MB). Free memory was 27.1 MB in the beginning and 31.5 MB in the end (delta: -4.4 MB). Peak memory consumption was 11.8 MB. Max. memory is 16.1 GB. [2020-10-24 15:08:53,870 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 50.3 MB. Free memory was 32.0 MB in the beginning and 31.9 MB in the end (delta: 39.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-24 15:08:53,872 INFO L168 Benchmark]: CACSL2BoogieTranslator took 333.38 ms. Allocated memory is still 50.3 MB. Free memory was 26.4 MB in the beginning and 29.4 MB in the end (delta: -3.0 MB). Peak memory consumption was 5.5 MB. Max. memory is 16.1 GB. [2020-10-24 15:08:53,873 INFO L168 Benchmark]: Boogie Procedure Inliner took 46.50 ms. Allocated memory is still 50.3 MB. Free memory was 29.4 MB in the beginning and 27.8 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-24 15:08:53,874 INFO L168 Benchmark]: Boogie Preprocessor took 35.35 ms. Allocated memory is still 50.3 MB. Free memory was 27.8 MB in the beginning and 26.4 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-24 15:08:53,876 INFO L168 Benchmark]: RCFGBuilder took 513.13 ms. Allocated memory was 50.3 MB in the beginning and 65.0 MB in the end (delta: 14.7 MB). Free memory was 26.3 MB in the beginning and 37.7 MB in the end (delta: -11.4 MB). Peak memory consumption was 9.8 MB. Max. memory is 16.1 GB. [2020-10-24 15:08:53,878 INFO L168 Benchmark]: TraceAbstraction took 735.48 ms. Allocated memory is still 65.0 MB. Free memory was 37.2 MB in the beginning and 31.6 MB in the end (delta: 5.6 MB). Peak memory consumption was 4.9 MB. Max. memory is 16.1 GB. [2020-10-24 15:08:53,881 INFO L168 Benchmark]: Witness Printer took 7.21 ms. Allocated memory is still 65.0 MB. Free memory was 31.6 MB in the beginning and 31.5 MB in the end (delta: 105.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-24 15:08:53,898 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 50.3 MB. Free memory was 32.0 MB in the beginning and 31.9 MB in the end (delta: 39.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 333.38 ms. Allocated memory is still 50.3 MB. Free memory was 26.4 MB in the beginning and 29.4 MB in the end (delta: -3.0 MB). Peak memory consumption was 5.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 46.50 ms. Allocated memory is still 50.3 MB. Free memory was 29.4 MB in the beginning and 27.8 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 35.35 ms. Allocated memory is still 50.3 MB. Free memory was 27.8 MB in the beginning and 26.4 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 513.13 ms. Allocated memory was 50.3 MB in the beginning and 65.0 MB in the end (delta: 14.7 MB). Free memory was 26.3 MB in the beginning and 37.7 MB in the end (delta: -11.4 MB). Peak memory consumption was 9.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 735.48 ms. Allocated memory is still 65.0 MB. Free memory was 37.2 MB in the beginning and 31.6 MB in the end (delta: 5.6 MB). Peak memory consumption was 4.9 MB. Max. memory is 16.1 GB. * Witness Printer took 7.21 ms. Allocated memory is still 65.0 MB. Free memory was 31.6 MB in the beginning and 31.5 MB in the end (delta: 105.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 3]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryArithmeticFLOAT_SMToperation at line 44, overapproximation of bitwiseAnd at line 64. Possible FailurePath: [L75] float x = -1.0f / 0.0f; [L14] __uint32_t w; [L16] int exponent_less_127; [L19] ieee_float_shape_type gf_u; [L20] gf_u.value = (x) [L21] EXPR gf_u.word [L21] (w) = gf_u.word [L24] exponent_less_127 = (int)((w & 0x7f800000) >> 23) - 127 [L26] COND FALSE !(exponent_less_127 < 23) [L42] COND TRUE exponent_less_127 == 128 [L44] return x + x; [L76] float res = round_float(x); [L58] __int32_t ix; [L60] ieee_float_shape_type gf_u; [L61] gf_u.value = (x) [L62] EXPR gf_u.word [L62] (ix) = gf_u.word [L64] ix &= 0x7fffffff [L65] return ((ix) == 0x7f800000L); [L79] COND TRUE !isinf_float(res) [L3] __assert_fail("0", "float_req_bl_1032d.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 25 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.6s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 28 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=25occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 26 NumberOfCodeBlocks, 26 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 11 ConstructedInterpolants, 0 QuantifiedInterpolants, 121 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.0-ee8e70e [2020-10-24 15:08:56,673 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-24 15:08:56,677 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-24 15:08:56,715 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-24 15:08:56,716 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-24 15:08:56,717 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-24 15:08:56,719 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-24 15:08:56,723 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-24 15:08:56,729 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-24 15:08:56,734 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-24 15:08:56,736 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-24 15:08:56,737 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-24 15:08:56,738 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-24 15:08:56,739 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-24 15:08:56,741 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-24 15:08:56,743 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-24 15:08:56,744 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-24 15:08:56,755 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-24 15:08:56,758 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-24 15:08:56,760 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-24 15:08:56,762 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-24 15:08:56,764 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-24 15:08:56,765 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-24 15:08:56,766 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-24 15:08:56,769 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-24 15:08:56,770 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-24 15:08:56,770 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-24 15:08:56,772 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-24 15:08:56,772 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-24 15:08:56,773 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-24 15:08:56,774 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-24 15:08:56,775 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-24 15:08:56,776 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-24 15:08:56,777 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-24 15:08:56,779 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-24 15:08:56,779 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-24 15:08:56,780 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-24 15:08:56,780 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-24 15:08:56,781 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-24 15:08:56,782 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-24 15:08:56,783 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-24 15:08:56,784 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-10-24 15:08:56,844 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-24 15:08:56,844 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-24 15:08:56,848 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-24 15:08:56,849 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-24 15:08:56,849 INFO L138 SettingsManager]: * Use SBE=true [2020-10-24 15:08:56,849 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-24 15:08:56,850 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-24 15:08:56,851 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-24 15:08:56,852 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-24 15:08:56,852 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-24 15:08:56,852 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-24 15:08:56,852 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-24 15:08:56,853 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-10-24 15:08:56,853 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-10-24 15:08:56,854 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-24 15:08:56,855 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-24 15:08:56,855 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-24 15:08:56,855 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-24 15:08:56,855 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-24 15:08:56,856 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-24 15:08:56,856 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-24 15:08:56,856 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-24 15:08:56,856 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-24 15:08:56,857 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-24 15:08:56,858 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-24 15:08:56,858 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-24 15:08:56,858 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-10-24 15:08:56,858 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-10-24 15:08:56,859 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-24 15:08:56,859 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-24 15:08:56,859 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-24 15:08:56,859 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 488a794df502f47f24575a712dad386c6d67b377 [2020-10-24 15:08:57,367 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-24 15:08:57,431 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-24 15:08:57,435 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-24 15:08:57,438 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-24 15:08:57,439 INFO L275 PluginConnector]: CDTParser initialized [2020-10-24 15:08:57,440 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/float_req_bl_1032d.c [2020-10-24 15:08:57,542 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2cee90b13/0b82902846b64232b4abce667f7cf6b6/FLAG2d84e2cc7 [2020-10-24 15:08:58,159 INFO L306 CDTParser]: Found 1 translation units. [2020-10-24 15:08:58,160 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/float-newlib/float_req_bl_1032d.c [2020-10-24 15:08:58,169 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2cee90b13/0b82902846b64232b4abce667f7cf6b6/FLAG2d84e2cc7 [2020-10-24 15:08:58,542 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2cee90b13/0b82902846b64232b4abce667f7cf6b6 [2020-10-24 15:08:58,549 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-24 15:08:58,558 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-24 15:08:58,563 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-24 15:08:58,563 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-24 15:08:58,567 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-24 15:08:58,568 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 03:08:58" (1/1) ... [2020-10-24 15:08:58,572 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6cf461a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:08:58, skipping insertion in model container [2020-10-24 15:08:58,573 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 03:08:58" (1/1) ... [2020-10-24 15:08:58,581 INFO L146 MainTranslator]: Starting translation in SV-COMP mode [2020-10-24 15:08:58,607 INFO L179 MainTranslator]: Built tables and reachable declarations [2020-10-24 15:08:58,819 INFO L211 PostProcessor]: Analyzing one entry point: main [2020-10-24 15:08:58,838 INFO L212 MainTranslator]: Completed pre-run [2020-10-24 15:08:58,871 INFO L211 PostProcessor]: Analyzing one entry point: main [2020-10-24 15:08:58,894 INFO L217 MainTranslator]: Completed translation [2020-10-24 15:08:58,895 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:08:58 WrapperNode [2020-10-24 15:08:58,895 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-24 15:08:58,897 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-24 15:08:58,897 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-24 15:08:58,897 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-24 15:08:58,906 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:08:58" (1/1) ... [2020-10-24 15:08:58,919 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:08:58" (1/1) ... [2020-10-24 15:08:58,967 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-24 15:08:58,969 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-24 15:08:58,969 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-24 15:08:58,970 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-24 15:08:58,980 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:08:58" (1/1) ... [2020-10-24 15:08:58,981 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:08:58" (1/1) ... [2020-10-24 15:08:58,994 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:08:58" (1/1) ... [2020-10-24 15:08:58,994 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:08:58" (1/1) ... [2020-10-24 15:08:59,015 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:08:58" (1/1) ... [2020-10-24 15:08:59,020 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:08:58" (1/1) ... [2020-10-24 15:08:59,023 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:08:58" (1/1) ... [2020-10-24 15:08:59,028 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-24 15:08:59,029 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-24 15:08:59,029 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-24 15:08:59,030 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-24 15:08:59,031 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:08:58" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-24 15:08:59,104 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-10-24 15:08:59,104 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-24 15:08:59,105 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2020-10-24 15:08:59,105 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-10-24 15:08:59,105 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-24 15:08:59,106 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-24 15:08:59,106 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2020-10-24 15:08:59,106 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.float_to_bitvec_FLOAT [2020-10-24 15:08:59,106 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2020-10-24 15:08:59,107 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-24 15:08:59,647 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-24 15:08:59,648 INFO L298 CfgBuilder]: Removed 16 assume(true) statements. [2020-10-24 15:08:59,650 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 03:08:59 BoogieIcfgContainer [2020-10-24 15:08:59,651 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-24 15:08:59,654 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-24 15:08:59,655 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-24 15:08:59,658 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-24 15:08:59,659 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 03:08:58" (1/3) ... [2020-10-24 15:08:59,660 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a02d619 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 03:08:59, skipping insertion in model container [2020-10-24 15:08:59,661 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:08:58" (2/3) ... [2020-10-24 15:08:59,661 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a02d619 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 03:08:59, skipping insertion in model container [2020-10-24 15:08:59,661 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 03:08:59" (3/3) ... [2020-10-24 15:08:59,666 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1032d.c [2020-10-24 15:08:59,680 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-24 15:08:59,687 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-24 15:08:59,702 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-24 15:08:59,743 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-24 15:08:59,743 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-24 15:08:59,743 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-24 15:08:59,744 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-24 15:08:59,744 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-24 15:08:59,744 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-24 15:08:59,744 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-24 15:08:59,745 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-24 15:08:59,763 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states. [2020-10-24 15:08:59,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-24 15:08:59,770 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 15:08:59,772 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 15:08:59,773 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 15:08:59,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 15:08:59,783 INFO L82 PathProgramCache]: Analyzing trace with hash -592327338, now seen corresponding path program 1 times [2020-10-24 15:08:59,799 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-24 15:08:59,800 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [548106781] [2020-10-24 15:08:59,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2020-10-24 15:09:00,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 15:09:00,175 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 1 conjunts are in the unsatisfiable core [2020-10-24 15:09:00,181 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-24 15:09:00,199 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 15:09:00,199 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-24 15:09:00,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 15:09:00,206 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [548106781] [2020-10-24 15:09:00,207 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-24 15:09:00,207 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-10-24 15:09:00,208 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839247002] [2020-10-24 15:09:00,213 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-24 15:09:00,214 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-24 15:09:00,228 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-24 15:09:00,229 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-24 15:09:00,231 INFO L87 Difference]: Start difference. First operand 25 states. Second operand 2 states. [2020-10-24 15:09:00,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 15:09:00,251 INFO L93 Difference]: Finished difference Result 47 states and 69 transitions. [2020-10-24 15:09:00,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-24 15:09:00,253 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 12 [2020-10-24 15:09:00,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 15:09:00,263 INFO L225 Difference]: With dead ends: 47 [2020-10-24 15:09:00,263 INFO L226 Difference]: Without dead ends: 21 [2020-10-24 15:09:00,273 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-24 15:09:00,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2020-10-24 15:09:00,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2020-10-24 15:09:00,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-10-24 15:09:00,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 25 transitions. [2020-10-24 15:09:00,309 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 25 transitions. Word has length 12 [2020-10-24 15:09:00,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 15:09:00,310 INFO L481 AbstractCegarLoop]: Abstraction has 21 states and 25 transitions. [2020-10-24 15:09:00,310 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-24 15:09:00,310 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 25 transitions. [2020-10-24 15:09:00,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-24 15:09:00,311 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 15:09:00,312 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 15:09:00,526 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-10-24 15:09:00,526 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 15:09:00,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 15:09:00,528 INFO L82 PathProgramCache]: Analyzing trace with hash 1651159701, now seen corresponding path program 1 times [2020-10-24 15:09:00,529 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-24 15:09:00,530 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [414514391] [2020-10-24 15:09:00,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2020-10-24 15:09:00,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 15:09:00,864 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 16 conjunts are in the unsatisfiable core [2020-10-24 15:09:00,867 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-24 15:09:02,447 WARN L193 SmtUtils]: Spent 1.04 s on a formula simplification that was a NOOP. DAG size: 35 [2020-10-24 15:09:06,213 WARN L193 SmtUtils]: Spent 299.00 ms on a formula simplification that was a NOOP. DAG size: 39 [2020-10-24 15:09:18,528 WARN L193 SmtUtils]: Spent 510.00 ms on a formula simplification that was a NOOP. DAG size: 39 [2020-10-24 15:09:38,718 WARN L193 SmtUtils]: Spent 467.00 ms on a formula simplification that was a NOOP. DAG size: 39 [2020-10-24 15:09:38,759 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-24 15:09:43,058 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 15:09:43,059 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-24 15:09:56,974 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-10-24 15:09:57,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 15:09:57,554 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [414514391] [2020-10-24 15:09:57,554 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-24 15:09:57,554 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 15 [2020-10-24 15:09:57,555 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451213237] [2020-10-24 15:09:57,556 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-24 15:09:57,557 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-24 15:09:57,558 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-24 15:09:57,559 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=167, Unknown=9, NotChecked=0, Total=210 [2020-10-24 15:09:57,559 INFO L87 Difference]: Start difference. First operand 21 states and 25 transitions. Second operand 15 states. [2020-10-24 15:11:20,300 WARN L193 SmtUtils]: Spent 9.33 s on a formula simplification that was a NOOP. DAG size: 48 [2020-10-24 15:12:20,893 WARN L193 SmtUtils]: Spent 15.50 s on a formula simplification that was a NOOP. DAG size: 56 [2020-10-24 15:12:32,764 WARN L838 $PredicateComparison]: unable to prove that (and (exists ((|v_ULTIMATE.start_main_#t~nondet14_6| (_ BitVec 32)) (|v_ULTIMATE.start_main_#t~nondet15_6| (_ BitVec 32)) (|v_ULTIMATE.start_main_#t~nondet16_6| (_ BitVec 32))) (let ((.cse0 (fp ((_ extract 31 31) |v_ULTIMATE.start_main_#t~nondet14_6|) ((_ extract 30 23) |v_ULTIMATE.start_main_#t~nondet14_6|) ((_ extract 22 0) |v_ULTIMATE.start_main_#t~nondet14_6|))) (.cse2 (fp ((_ extract 31 31) |v_ULTIMATE.start_main_#t~nondet15_6|) ((_ extract 30 23) |v_ULTIMATE.start_main_#t~nondet15_6|) ((_ extract 22 0) |v_ULTIMATE.start_main_#t~nondet15_6|))) (.cse1 (fp ((_ extract 31 31) |v_ULTIMATE.start_main_#t~nondet16_6|) ((_ extract 30 23) |v_ULTIMATE.start_main_#t~nondet16_6|) ((_ extract 22 0) |v_ULTIMATE.start_main_#t~nondet16_6|)))) (and (= .cse0 ((_ to_fp 8 24) c_~CRM 1.0)) (= (_ +zero 8 24) .cse1) (= .cse2 (fp.neg .cse0)) (= (fp.div c_~CRM .cse2 .cse1) (fp ((_ extract 31 31) c_ULTIMATE.start_round_float_~x) ((_ extract 30 23) c_ULTIMATE.start_round_float_~x) ((_ extract 22 0) c_ULTIMATE.start_round_float_~x)))))) (exists ((|v_ULTIMATE.start_main_#t~nondet14_6| (_ BitVec 32)) (|v_ULTIMATE.start_main_#t~nondet15_6| (_ BitVec 32)) (|v_ULTIMATE.start_main_#t~nondet16_6| (_ BitVec 32)) (ULTIMATE.start_round_float_~x (_ BitVec 32))) (let ((.cse3 (fp ((_ extract 31 31) |v_ULTIMATE.start_main_#t~nondet16_6|) ((_ extract 30 23) |v_ULTIMATE.start_main_#t~nondet16_6|) ((_ extract 22 0) |v_ULTIMATE.start_main_#t~nondet16_6|))) (.cse4 (fp ((_ extract 31 31) |v_ULTIMATE.start_main_#t~nondet15_6|) ((_ extract 30 23) |v_ULTIMATE.start_main_#t~nondet15_6|) ((_ extract 22 0) |v_ULTIMATE.start_main_#t~nondet15_6|))) (.cse5 (fp ((_ extract 31 31) ULTIMATE.start_round_float_~x) ((_ extract 30 23) ULTIMATE.start_round_float_~x) ((_ extract 22 0) ULTIMATE.start_round_float_~x))) (.cse6 (fp ((_ extract 31 31) |v_ULTIMATE.start_main_#t~nondet14_6|) ((_ extract 30 23) |v_ULTIMATE.start_main_#t~nondet14_6|) ((_ extract 22 0) |v_ULTIMATE.start_main_#t~nondet14_6|)))) (and (= (_ +zero 8 24) .cse3) (= (fp.div roundNearestTiesToEven .cse4 .cse3) .cse5) (= .cse4 (fp.neg .cse6)) (= (fp ((_ extract 31 31) c_ULTIMATE.start_isinf_float_~x) ((_ extract 30 23) c_ULTIMATE.start_isinf_float_~x) ((_ extract 22 0) c_ULTIMATE.start_isinf_float_~x)) (fp.add roundNearestTiesToEven .cse5 .cse5)) (= ((_ to_fp 8 24) roundNearestTiesToEven 1.0) .cse6)))) (= roundNearestTiesToEven c_~CRM) (exists ((|v_ULTIMATE.start_main_#t~nondet14_6| (_ BitVec 32)) (|v_ULTIMATE.start_main_#t~nondet15_6| (_ BitVec 32)) (|v_ULTIMATE.start_main_#t~nondet16_6| (_ BitVec 32)) (ULTIMATE.start_round_float_~x (_ BitVec 32))) (let ((.cse7 (fp ((_ extract 31 31) |v_ULTIMATE.start_main_#t~nondet16_6|) ((_ extract 30 23) |v_ULTIMATE.start_main_#t~nondet16_6|) ((_ extract 22 0) |v_ULTIMATE.start_main_#t~nondet16_6|))) (.cse8 (fp ((_ extract 31 31) |v_ULTIMATE.start_main_#t~nondet15_6|) ((_ extract 30 23) |v_ULTIMATE.start_main_#t~nondet15_6|) ((_ extract 22 0) |v_ULTIMATE.start_main_#t~nondet15_6|))) (.cse9 (fp ((_ extract 31 31) ULTIMATE.start_round_float_~x) ((_ extract 30 23) ULTIMATE.start_round_float_~x) ((_ extract 22 0) ULTIMATE.start_round_float_~x))) (.cse10 (fp ((_ extract 31 31) |v_ULTIMATE.start_main_#t~nondet14_6|) ((_ extract 30 23) |v_ULTIMATE.start_main_#t~nondet14_6|) ((_ extract 22 0) |v_ULTIMATE.start_main_#t~nondet14_6|)))) (and (= (_ +zero 8 24) .cse7) (= (fp.div roundNearestTiesToEven .cse8 .cse7) .cse9) (= .cse8 (fp.neg .cse10)) (= (fp.add roundNearestTiesToEven .cse9 .cse9) (fp ((_ extract 31 31) c_ULTIMATE.start_isinf_float_~ix~0) ((_ extract 30 23) c_ULTIMATE.start_isinf_float_~ix~0) ((_ extract 22 0) c_ULTIMATE.start_isinf_float_~ix~0))) (= ((_ to_fp 8 24) roundNearestTiesToEven 1.0) .cse10)))) (exists ((|v_ULTIMATE.start_main_#t~nondet14_6| (_ BitVec 32)) (|v_ULTIMATE.start_main_#t~nondet15_6| (_ BitVec 32)) (|v_ULTIMATE.start_main_#t~nondet16_6| (_ BitVec 32)) (ULTIMATE.start_round_float_~x (_ BitVec 32))) (let ((.cse11 (fp ((_ extract 31 31) |v_ULTIMATE.start_main_#t~nondet16_6|) ((_ extract 30 23) |v_ULTIMATE.start_main_#t~nondet16_6|) ((_ extract 22 0) |v_ULTIMATE.start_main_#t~nondet16_6|))) (.cse12 (fp ((_ extract 31 31) |v_ULTIMATE.start_main_#t~nondet15_6|) ((_ extract 30 23) |v_ULTIMATE.start_main_#t~nondet15_6|) ((_ extract 22 0) |v_ULTIMATE.start_main_#t~nondet15_6|))) (.cse13 (fp ((_ extract 31 31) ULTIMATE.start_round_float_~x) ((_ extract 30 23) ULTIMATE.start_round_float_~x) ((_ extract 22 0) ULTIMATE.start_round_float_~x))) (.cse14 (fp ((_ extract 31 31) |v_ULTIMATE.start_main_#t~nondet14_6|) ((_ extract 30 23) |v_ULTIMATE.start_main_#t~nondet14_6|) ((_ extract 22 0) |v_ULTIMATE.start_main_#t~nondet14_6|)))) (and (= (_ +zero 8 24) .cse11) (= (fp.div roundNearestTiesToEven .cse12 .cse11) .cse13) (= .cse12 (fp.neg .cse14)) (= (fp.add roundNearestTiesToEven .cse13 .cse13) (fp ((_ extract 31 31) |c_ULTIMATE.start_round_float_#res|) ((_ extract 30 23) |c_ULTIMATE.start_round_float_#res|) ((_ extract 22 0) |c_ULTIMATE.start_round_float_#res|))) (= ((_ to_fp 8 24) roundNearestTiesToEven 1.0) .cse14))))) is different from false [2020-10-24 15:12:44,090 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2020-10-24 15:12:44,850 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2020-10-24 15:12:45,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 15:12:45,083 INFO L93 Difference]: Finished difference Result 29 states and 32 transitions. [2020-10-24 15:12:45,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-24 15:12:45,084 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 14 [2020-10-24 15:12:45,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 15:12:45,085 INFO L225 Difference]: With dead ends: 29 [2020-10-24 15:12:45,087 INFO L226 Difference]: Without dead ends: 20 [2020-10-24 15:12:45,090 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 115.0s TimeCoverageRelationStatistics Valid=66, Invalid=269, Unknown=11, NotChecked=34, Total=380 [2020-10-24 15:12:45,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2020-10-24 15:12:45,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2020-10-24 15:12:45,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-10-24 15:12:45,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 21 transitions. [2020-10-24 15:12:45,096 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 21 transitions. Word has length 14 [2020-10-24 15:12:45,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 15:12:45,097 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 21 transitions. [2020-10-24 15:12:45,097 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-24 15:12:45,097 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 21 transitions. [2020-10-24 15:12:45,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-24 15:12:45,099 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 15:12:45,099 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 15:12:45,299 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-10-24 15:12:45,300 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 15:12:45,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 15:12:45,301 INFO L82 PathProgramCache]: Analyzing trace with hash 842294842, now seen corresponding path program 1 times [2020-10-24 15:12:45,303 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-24 15:12:45,303 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1536795210] [2020-10-24 15:12:45,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2020-10-24 15:12:45,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 15:12:45,549 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-24 15:12:45,551 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-24 15:12:46,675 WARN L193 SmtUtils]: Spent 324.00 ms on a formula simplification that was a NOOP. DAG size: 32 [2020-10-24 15:12:52,176 WARN L193 SmtUtils]: Spent 488.00 ms on a formula simplification that was a NOOP. DAG size: 32 [2020-10-24 15:13:01,759 WARN L193 SmtUtils]: Spent 332.00 ms on a formula simplification that was a NOOP. DAG size: 40 [2020-10-24 15:13:01,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 15:13:01,789 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-24 15:13:06,114 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 15:13:06,114 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1536795210] [2020-10-24 15:13:06,115 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-24 15:13:06,115 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2020-10-24 15:13:06,115 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170740882] [2020-10-24 15:13:06,115 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-24 15:13:06,116 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-24 15:13:06,116 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-24 15:13:06,117 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=48, Unknown=6, NotChecked=0, Total=72 [2020-10-24 15:13:06,117 INFO L87 Difference]: Start difference. First operand 20 states and 21 transitions. Second operand 9 states. [2020-10-24 15:13:14,552 WARN L193 SmtUtils]: Spent 1.12 s on a formula simplification that was a NOOP. DAG size: 35 [2020-10-24 15:13:26,111 WARN L193 SmtUtils]: Spent 6.74 s on a formula simplification that was a NOOP. DAG size: 43 [2020-10-24 15:13:39,381 WARN L193 SmtUtils]: Spent 11.56 s on a formula simplification that was a NOOP. DAG size: 53 [2020-10-24 15:13:39,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 15:13:39,383 INFO L93 Difference]: Finished difference Result 20 states and 21 transitions. [2020-10-24 15:13:39,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-24 15:13:39,383 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 18 [2020-10-24 15:13:39,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 15:13:39,384 INFO L225 Difference]: With dead ends: 20 [2020-10-24 15:13:39,384 INFO L226 Difference]: Without dead ends: 0 [2020-10-24 15:13:39,384 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 50.7s TimeCoverageRelationStatistics Valid=42, Invalid=84, Unknown=6, NotChecked=0, Total=132 [2020-10-24 15:13:39,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-24 15:13:39,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-24 15:13:39,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-24 15:13:39,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-24 15:13:39,385 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2020-10-24 15:13:39,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 15:13:39,385 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-24 15:13:39,386 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-24 15:13:39,386 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-24 15:13:39,386 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-24 15:13:39,586 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-10-24 15:13:39,590 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-24 15:13:47,425 WARN L193 SmtUtils]: Spent 7.79 s on a formula simplification that was a NOOP. DAG size: 48 [2020-10-24 15:13:50,464 WARN L193 SmtUtils]: Spent 3.04 s on a formula simplification. DAG size of input: 59 DAG size of output: 35 [2020-10-24 15:13:50,595 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2020-10-24 15:13:59,831 WARN L195 Executor]: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000) stderr output: (error "out of memory") [2020-10-24 15:13:59,833 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.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.logic.Util.checkSat(Util.java:61) at de.uni_freiburg.informatik.ultimate.logic.simplification.SimplifyDDA.getRedundancy(SimplifyDDA.java:621) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.simplify.SimplifyDDAWithTimeout.getRedundancy(SimplifyDDAWithTimeout.java:120) at de.uni_freiburg.informatik.ultimate.logic.simplification.SimplifyDDA$Simplifier.walk(SimplifyDDA.java:371) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:115) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:106) at de.uni_freiburg.informatik.ultimate.logic.simplification.SimplifyDDA.simplifyOnce(SimplifyDDA.java:650) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.simplify.SimplifyDDAWithTimeout.getSimplifiedTerm(SimplifyDDAWithTimeout.java:180) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.simplify(SmtUtils.java:164) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.simplify(SmtUtils.java:134) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.simplifyWithStatistics(SmtUtils.java:221) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter(HoareAnnotationComposer.java:149) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.(HoareAnnotationComposer.java:105) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.computeCFGHoareAnnotation(BasicCegarLoop.java:1052) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResult.iterate(CegarLoopResult.java:183) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterateNew(TraceAbstractionStarter.java:341) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:182) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:134) 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) ... 34 more [2020-10-24 15:13:59,839 INFO L168 Benchmark]: Toolchain (without parser) took 301286.13 ms. Allocated memory was 48.2 MB in the beginning and 62.9 MB in the end (delta: 14.7 MB). Free memory was 25.0 MB in the beginning and 25.2 MB in the end (delta: -202.3 kB). Peak memory consumption was 17.2 MB. Max. memory is 16.1 GB. [2020-10-24 15:13:59,840 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 48.2 MB. Free memory was 26.1 MB in the beginning and 26.0 MB in the end (delta: 69.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-24 15:13:59,841 INFO L168 Benchmark]: CACSL2BoogieTranslator took 332.78 ms. Allocated memory is still 48.2 MB. Free memory was 24.4 MB in the beginning and 24.4 MB in the end (delta: 22.1 kB). Peak memory consumption was 3.4 MB. Max. memory is 16.1 GB. [2020-10-24 15:13:59,842 INFO L168 Benchmark]: Boogie Procedure Inliner took 70.96 ms. Allocated memory was 48.2 MB in the beginning and 62.9 MB in the end (delta: 14.7 MB). Free memory was 24.3 MB in the beginning and 47.0 MB in the end (delta: -22.7 MB). Peak memory consumption was 4.9 MB. Max. memory is 16.1 GB. [2020-10-24 15:13:59,843 INFO L168 Benchmark]: Boogie Preprocessor took 59.07 ms. Allocated memory is still 62.9 MB. Free memory was 47.0 MB in the beginning and 45.4 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-24 15:13:59,843 INFO L168 Benchmark]: RCFGBuilder took 621.90 ms. Allocated memory is still 62.9 MB. Free memory was 45.4 MB in the beginning and 43.4 MB in the end (delta: 2.0 MB). Peak memory consumption was 16.0 MB. Max. memory is 16.1 GB. [2020-10-24 15:13:59,844 INFO L168 Benchmark]: TraceAbstraction took 300181.69 ms. Allocated memory is still 62.9 MB. Free memory was 43.0 MB in the beginning and 25.2 MB in the end (delta: 17.8 MB). Peak memory consumption was 18.1 MB. Max. memory is 16.1 GB. [2020-10-24 15:13:59,848 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 48.2 MB. Free memory was 26.1 MB in the beginning and 26.0 MB in the end (delta: 69.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 332.78 ms. Allocated memory is still 48.2 MB. Free memory was 24.4 MB in the beginning and 24.4 MB in the end (delta: 22.1 kB). Peak memory consumption was 3.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 70.96 ms. Allocated memory was 48.2 MB in the beginning and 62.9 MB in the end (delta: 14.7 MB). Free memory was 24.3 MB in the beginning and 47.0 MB in the end (delta: -22.7 MB). Peak memory consumption was 4.9 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 59.07 ms. Allocated memory is still 62.9 MB. Free memory was 47.0 MB in the beginning and 45.4 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 621.90 ms. Allocated memory is still 62.9 MB. Free memory was 45.4 MB in the beginning and 43.4 MB in the end (delta: 2.0 MB). Peak memory consumption was 16.0 MB. Max. memory is 16.1 GB. * TraceAbstraction took 300181.69 ms. Allocated memory is still 62.9 MB. Free memory was 43.0 MB in the beginning and 25.2 MB in the end (delta: 17.8 MB). Peak memory consumption was 18.1 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...