./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/double_req_bl_1232b.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cad46833 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_b7bd9b12-bea8-4843-a9ce-dda0f8de838e/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_b7bd9b12-bea8-4843-a9ce-dda0f8de838e/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_b7bd9b12-bea8-4843-a9ce-dda0f8de838e/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_b7bd9b12-bea8-4843-a9ce-dda0f8de838e/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1232b.c -s /tmp/vcloud-vcloud-master/worker/run_dir_b7bd9b12-bea8-4843-a9ce-dda0f8de838e/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_b7bd9b12-bea8-4843-a9ce-dda0f8de838e/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 064927d7c1e3d8158c8524deee46f65d988c7936 ...................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_b7bd9b12-bea8-4843-a9ce-dda0f8de838e/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_b7bd9b12-bea8-4843-a9ce-dda0f8de838e/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_b7bd9b12-bea8-4843-a9ce-dda0f8de838e/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_b7bd9b12-bea8-4843-a9ce-dda0f8de838e/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1232b.c -s /tmp/vcloud-vcloud-master/worker/run_dir_b7bd9b12-bea8-4843-a9ce-dda0f8de838e/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_b7bd9b12-bea8-4843-a9ce-dda0f8de838e/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 064927d7c1e3d8158c8524deee46f65d988c7936 .............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.1.24-cad4683 [2019-11-15 21:51:50,365 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-15 21:51:50,366 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-15 21:51:50,380 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-15 21:51:50,381 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-15 21:51:50,382 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-15 21:51:50,384 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-15 21:51:50,392 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-15 21:51:50,394 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-15 21:51:50,394 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-15 21:51:50,395 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-15 21:51:50,396 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-15 21:51:50,397 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-15 21:51:50,398 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-15 21:51:50,398 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-15 21:51:50,399 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-15 21:51:50,400 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-15 21:51:50,401 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-15 21:51:50,402 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-15 21:51:50,404 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-15 21:51:50,405 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-15 21:51:50,406 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-15 21:51:50,407 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-15 21:51:50,408 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-15 21:51:50,410 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-15 21:51:50,411 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-15 21:51:50,411 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-15 21:51:50,412 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-15 21:51:50,412 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-15 21:51:50,413 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-15 21:51:50,413 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-15 21:51:50,414 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-15 21:51:50,414 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-15 21:51:50,415 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-15 21:51:50,416 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-15 21:51:50,416 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-15 21:51:50,416 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-15 21:51:50,417 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-15 21:51:50,417 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-15 21:51:50,418 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-15 21:51:50,418 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-15 21:51:50,419 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_b7bd9b12-bea8-4843-a9ce-dda0f8de838e/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-15 21:51:50,431 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-15 21:51:50,431 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-15 21:51:50,432 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-15 21:51:50,433 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-15 21:51:50,433 INFO L138 SettingsManager]: * Use SBE=true [2019-11-15 21:51:50,433 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-15 21:51:50,433 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-15 21:51:50,433 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-15 21:51:50,434 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-15 21:51:50,434 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-15 21:51:50,434 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-15 21:51:50,434 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-15 21:51:50,434 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-15 21:51:50,434 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-15 21:51:50,435 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-15 21:51:50,435 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-15 21:51:50,435 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-15 21:51:50,435 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-15 21:51:50,435 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-15 21:51:50,436 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-15 21:51:50,436 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-15 21:51:50,436 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-15 21:51:50,436 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-15 21:51:50,436 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-15 21:51:50,437 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-15 21:51:50,437 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-15 21:51:50,437 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-15 21:51:50,437 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-15 21:51:50,437 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_b7bd9b12-bea8-4843-a9ce-dda0f8de838e/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 064927d7c1e3d8158c8524deee46f65d988c7936 [2019-11-15 21:51:50,462 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-15 21:51:50,473 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-15 21:51:50,476 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-15 21:51:50,477 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-15 21:51:50,478 INFO L275 PluginConnector]: CDTParser initialized [2019-11-15 21:51:50,478 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_b7bd9b12-bea8-4843-a9ce-dda0f8de838e/bin/uautomizer/../../sv-benchmarks/c/float-newlib/double_req_bl_1232b.c [2019-11-15 21:51:50,531 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_b7bd9b12-bea8-4843-a9ce-dda0f8de838e/bin/uautomizer/data/cdc0271e4/cd9c7cf37b4c4fa3a72e1fc5f45ad0f3/FLAGe920bc863 [2019-11-15 21:51:50,872 INFO L306 CDTParser]: Found 1 translation units. [2019-11-15 21:51:50,873 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_b7bd9b12-bea8-4843-a9ce-dda0f8de838e/sv-benchmarks/c/float-newlib/double_req_bl_1232b.c [2019-11-15 21:51:50,879 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_b7bd9b12-bea8-4843-a9ce-dda0f8de838e/bin/uautomizer/data/cdc0271e4/cd9c7cf37b4c4fa3a72e1fc5f45ad0f3/FLAGe920bc863 [2019-11-15 21:51:51,254 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_b7bd9b12-bea8-4843-a9ce-dda0f8de838e/bin/uautomizer/data/cdc0271e4/cd9c7cf37b4c4fa3a72e1fc5f45ad0f3 [2019-11-15 21:51:51,257 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-15 21:51:51,258 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-15 21:51:51,261 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-15 21:51:51,261 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-15 21:51:51,264 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-15 21:51:51,264 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.11 09:51:51" (1/1) ... [2019-11-15 21:51:51,266 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e018ac3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:51:51, skipping insertion in model container [2019-11-15 21:51:51,266 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.11 09:51:51" (1/1) ... [2019-11-15 21:51:51,272 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-15 21:51:51,286 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-15 21:51:51,521 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-15 21:51:51,524 INFO L188 MainTranslator]: Completed pre-run [2019-11-15 21:51:51,549 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-15 21:51:51,566 INFO L192 MainTranslator]: Completed translation [2019-11-15 21:51:51,567 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:51:51 WrapperNode [2019-11-15 21:51:51,567 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-15 21:51:51,567 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-15 21:51:51,567 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-15 21:51:51,568 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-15 21:51:51,573 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:51:51" (1/1) ... [2019-11-15 21:51:51,581 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:51:51" (1/1) ... [2019-11-15 21:51:51,607 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-15 21:51:51,607 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-15 21:51:51,607 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-15 21:51:51,607 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-15 21:51:51,615 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:51:51" (1/1) ... [2019-11-15 21:51:51,615 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:51:51" (1/1) ... [2019-11-15 21:51:51,617 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:51:51" (1/1) ... [2019-11-15 21:51:51,618 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:51:51" (1/1) ... [2019-11-15 21:51:51,626 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:51:51" (1/1) ... [2019-11-15 21:51:51,631 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:51:51" (1/1) ... [2019-11-15 21:51:51,633 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:51:51" (1/1) ... [2019-11-15 21:51:51,636 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-15 21:51:51,637 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-15 21:51:51,637 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-15 21:51:51,637 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-15 21:51:51,638 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:51:51" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b7bd9b12-bea8-4843-a9ce-dda0f8de838e/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-15 21:51:51,708 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-15 21:51:51,709 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2019-11-15 21:51:51,709 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-15 21:51:51,709 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-15 21:51:51,710 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-15 21:51:51,710 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-15 21:51:52,079 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-15 21:51:52,080 INFO L284 CfgBuilder]: Removed 18 assume(true) statements. [2019-11-15 21:51:52,081 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 09:51:52 BoogieIcfgContainer [2019-11-15 21:51:52,081 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-15 21:51:52,082 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-15 21:51:52,082 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-15 21:51:52,085 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-15 21:51:52,085 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.11 09:51:51" (1/3) ... [2019-11-15 21:51:52,086 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f76844c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.11 09:51:52, skipping insertion in model container [2019-11-15 21:51:52,086 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:51:51" (2/3) ... [2019-11-15 21:51:52,086 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f76844c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.11 09:51:52, skipping insertion in model container [2019-11-15 21:51:52,086 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 09:51:52" (3/3) ... [2019-11-15 21:51:52,088 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1232b.c [2019-11-15 21:51:52,096 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-15 21:51:52,103 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-15 21:51:52,112 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-15 21:51:52,130 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-15 21:51:52,130 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-15 21:51:52,130 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-15 21:51:52,130 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-15 21:51:52,131 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-15 21:51:52,131 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-15 21:51:52,131 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-15 21:51:52,131 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-15 21:51:52,145 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2019-11-15 21:51:52,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-15 21:51:52,151 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 21:51:52,152 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 21:51:52,154 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 21:51:52,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 21:51:52,159 INFO L82 PathProgramCache]: Analyzing trace with hash -958075201, now seen corresponding path program 1 times [2019-11-15 21:51:52,167 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 21:51:52,167 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530773563] [2019-11-15 21:51:52,168 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:51:52,168 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:51:52,168 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 21:51:52,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:51:52,260 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 21:51:52,261 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1530773563] [2019-11-15 21:51:52,261 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 21:51:52,262 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-15 21:51:52,262 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646890210] [2019-11-15 21:51:52,266 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-15 21:51:52,266 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 21:51:52,276 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-15 21:51:52,276 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-15 21:51:52,278 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 2 states. [2019-11-15 21:51:52,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 21:51:52,295 INFO L93 Difference]: Finished difference Result 62 states and 98 transitions. [2019-11-15 21:51:52,296 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-15 21:51:52,297 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2019-11-15 21:51:52,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 21:51:52,309 INFO L225 Difference]: With dead ends: 62 [2019-11-15 21:51:52,309 INFO L226 Difference]: Without dead ends: 29 [2019-11-15 21:51:52,313 INFO L600 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 [2019-11-15 21:51:52,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2019-11-15 21:51:52,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2019-11-15 21:51:52,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2019-11-15 21:51:52,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 40 transitions. [2019-11-15 21:51:52,345 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 40 transitions. Word has length 10 [2019-11-15 21:51:52,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 21:51:52,345 INFO L462 AbstractCegarLoop]: Abstraction has 29 states and 40 transitions. [2019-11-15 21:51:52,345 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-15 21:51:52,346 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 40 transitions. [2019-11-15 21:51:52,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-15 21:51:52,346 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 21:51:52,346 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 21:51:52,346 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 21:51:52,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 21:51:52,347 INFO L82 PathProgramCache]: Analyzing trace with hash 1001584898, now seen corresponding path program 1 times [2019-11-15 21:51:52,347 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 21:51:52,347 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418651290] [2019-11-15 21:51:52,347 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:51:52,347 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:51:52,347 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 21:51:52,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:51:52,421 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 21:51:52,422 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1418651290] [2019-11-15 21:51:52,422 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 21:51:52,422 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-15 21:51:52,422 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029684481] [2019-11-15 21:51:52,423 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-15 21:51:52,424 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 21:51:52,424 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-15 21:51:52,424 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-15 21:51:52,424 INFO L87 Difference]: Start difference. First operand 29 states and 40 transitions. Second operand 4 states. [2019-11-15 21:51:52,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 21:51:52,503 INFO L93 Difference]: Finished difference Result 53 states and 67 transitions. [2019-11-15 21:51:52,504 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-15 21:51:52,504 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2019-11-15 21:51:52,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 21:51:52,505 INFO L225 Difference]: With dead ends: 53 [2019-11-15 21:51:52,505 INFO L226 Difference]: Without dead ends: 44 [2019-11-15 21:51:52,506 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-15 21:51:52,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2019-11-15 21:51:52,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 31. [2019-11-15 21:51:52,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2019-11-15 21:51:52,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 42 transitions. [2019-11-15 21:51:52,512 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 42 transitions. Word has length 11 [2019-11-15 21:51:52,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 21:51:52,512 INFO L462 AbstractCegarLoop]: Abstraction has 31 states and 42 transitions. [2019-11-15 21:51:52,513 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-15 21:51:52,513 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 42 transitions. [2019-11-15 21:51:52,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-11-15 21:51:52,513 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 21:51:52,514 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 21:51:52,514 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 21:51:52,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 21:51:52,514 INFO L82 PathProgramCache]: Analyzing trace with hash -555760345, now seen corresponding path program 1 times [2019-11-15 21:51:52,514 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 21:51:52,515 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567502025] [2019-11-15 21:51:52,515 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:51:52,515 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:51:52,515 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 21:51:52,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:51:52,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 21:51:52,598 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567502025] [2019-11-15 21:51:52,599 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 21:51:52,599 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-15 21:51:52,599 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452749015] [2019-11-15 21:51:52,599 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-15 21:51:52,600 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 21:51:52,600 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-15 21:51:52,600 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-15 21:51:52,600 INFO L87 Difference]: Start difference. First operand 31 states and 42 transitions. Second operand 4 states. [2019-11-15 21:51:52,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 21:51:52,650 INFO L93 Difference]: Finished difference Result 55 states and 69 transitions. [2019-11-15 21:51:52,650 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-15 21:51:52,651 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2019-11-15 21:51:52,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 21:51:52,652 INFO L225 Difference]: With dead ends: 55 [2019-11-15 21:51:52,652 INFO L226 Difference]: Without dead ends: 46 [2019-11-15 21:51:52,653 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-15 21:51:52,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2019-11-15 21:51:52,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 31. [2019-11-15 21:51:52,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2019-11-15 21:51:52,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 42 transitions. [2019-11-15 21:51:52,658 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 42 transitions. Word has length 14 [2019-11-15 21:51:52,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 21:51:52,658 INFO L462 AbstractCegarLoop]: Abstraction has 31 states and 42 transitions. [2019-11-15 21:51:52,658 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-15 21:51:52,658 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 42 transitions. [2019-11-15 21:51:52,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-11-15 21:51:52,659 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 21:51:52,659 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 21:51:52,659 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 21:51:52,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 21:51:52,660 INFO L82 PathProgramCache]: Analyzing trace with hash 1219247017, now seen corresponding path program 1 times [2019-11-15 21:51:52,660 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 21:51:52,660 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1492227683] [2019-11-15 21:51:52,660 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:51:52,660 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:51:52,661 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 21:51:52,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 21:51:52,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 21:51:52,806 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-15 21:51:52,806 INFO L445 BasicCegarLoop]: Counterexample might be feasible [2019-11-15 21:51:52,835 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.11 09:51:52 BoogieIcfgContainer [2019-11-15 21:51:52,835 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-15 21:51:52,836 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-15 21:51:52,836 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-15 21:51:52,836 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-15 21:51:52,837 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 09:51:52" (3/4) ... [2019-11-15 21:51:52,840 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-11-15 21:51:52,840 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-15 21:51:52,842 INFO L168 Benchmark]: Toolchain (without parser) took 1583.24 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 107.0 MB). Free memory was 944.7 MB in the beginning and 1.0 GB in the end (delta: -73.2 MB). Peak memory consumption was 33.7 MB. Max. memory is 11.5 GB. [2019-11-15 21:51:52,843 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 1.0 GB. Free memory is still 962.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 21:51:52,844 INFO L168 Benchmark]: CACSL2BoogieTranslator took 306.40 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 107.0 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -151.2 MB). Peak memory consumption was 23.1 MB. Max. memory is 11.5 GB. [2019-11-15 21:51:52,844 INFO L168 Benchmark]: Boogie Procedure Inliner took 39.65 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 21:51:52,845 INFO L168 Benchmark]: Boogie Preprocessor took 29.27 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 21:51:52,846 INFO L168 Benchmark]: RCFGBuilder took 444.16 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 29.1 MB). Peak memory consumption was 29.1 MB. Max. memory is 11.5 GB. [2019-11-15 21:51:52,846 INFO L168 Benchmark]: TraceAbstraction took 753.80 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 48.9 MB). Peak memory consumption was 48.9 MB. Max. memory is 11.5 GB. [2019-11-15 21:51:52,847 INFO L168 Benchmark]: Witness Printer took 4.12 ms. Allocated memory is still 1.1 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 21:51:52,850 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 1.0 GB. Free memory is still 962.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 306.40 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 107.0 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -151.2 MB). Peak memory consumption was 23.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 39.65 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 29.27 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 444.16 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 29.1 MB). Peak memory consumption was 29.1 MB. Max. memory is 11.5 GB. * TraceAbstraction took 753.80 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 48.9 MB). Peak memory consumption was 48.9 MB. Max. memory is 11.5 GB. * Witness Printer took 4.12 ms. Allocated memory is still 1.1 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 80]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 79, overapproximation of someUnaryDOUBLEoperation at line 74. Possible FailurePath: [L74] double x = -0.0; [L75] double y = 0.0; [L19] __uint32_t msw, lsw; [L22] ieee_double_shape_type ew_u; [L23] ew_u.value = (x) [L24] EXPR ew_u.parts.msw [L24] (msw) = ew_u.parts.msw [L25] EXPR ew_u.parts.lsw [L25] (lsw) = ew_u.parts.lsw [L28-L29] COND FALSE !((msw == 0x00000000 && lsw == 0x00000000) || (msw == 0x80000000 && lsw == 0x00000000)) [L31-L32] COND FALSE !((msw >= 0x00100000 && msw <= 0x7fefffff) || (msw >= 0x80100000 && msw <= 0xffefffff)) [L34-L35] COND FALSE !(( msw <= 0x000fffff) || (msw >= 0x80000000 && msw <= 0x800fffff)) [L38-L39] COND FALSE !((msw == 0x7ff00000 && lsw == 0x00000000) || (msw == 0xfff00000 && lsw == 0x00000000)) [L42] return 0; [L46] COND TRUE __fpclassify_double(x) == 0 [L47] return y; [L76] double res = fmin_double(x, y); [L79] EXPR res == -0.0 && __signbit_double(res) == 1 [L79] COND TRUE !(res == -0.0 && __signbit_double(res) == 1) [L80] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 32 locations, 1 error locations. Result: UNSAFE, OverallTime: 0.7s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 135 SDtfs, 32 SDslu, 140 SDs, 0 SdLazy, 30 SolverSat, 12 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=32occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 28 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 49 NumberOfCodeBlocks, 49 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 32 ConstructedInterpolants, 0 QuantifiedInterpolants, 442 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.24-cad4683 [2019-11-15 21:51:55,088 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-15 21:51:55,090 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-15 21:51:55,107 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-15 21:51:55,107 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-15 21:51:55,109 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-15 21:51:55,111 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-15 21:51:55,119 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-15 21:51:55,123 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-15 21:51:55,127 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-15 21:51:55,128 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-15 21:51:55,130 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-15 21:51:55,131 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-15 21:51:55,133 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-15 21:51:55,134 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-15 21:51:55,135 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-15 21:51:55,136 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-15 21:51:55,138 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-15 21:51:55,140 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-15 21:51:55,144 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-15 21:51:55,147 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-15 21:51:55,149 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-15 21:51:55,151 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-15 21:51:55,153 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-15 21:51:55,155 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-15 21:51:55,156 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-15 21:51:55,156 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-15 21:51:55,159 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-15 21:51:55,159 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-15 21:51:55,160 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-15 21:51:55,160 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-15 21:51:55,161 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-15 21:51:55,161 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-15 21:51:55,162 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-15 21:51:55,163 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-15 21:51:55,163 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-15 21:51:55,164 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-15 21:51:55,164 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-15 21:51:55,165 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-15 21:51:55,166 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-15 21:51:55,166 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-15 21:51:55,167 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_b7bd9b12-bea8-4843-a9ce-dda0f8de838e/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2019-11-15 21:51:55,193 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-15 21:51:55,202 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-15 21:51:55,203 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-15 21:51:55,204 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-15 21:51:55,204 INFO L138 SettingsManager]: * Use SBE=true [2019-11-15 21:51:55,204 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-15 21:51:55,204 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-15 21:51:55,205 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-15 21:51:55,205 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-15 21:51:55,205 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-15 21:51:55,205 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-15 21:51:55,206 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-15 21:51:55,206 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-11-15 21:51:55,206 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-11-15 21:51:55,207 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-15 21:51:55,207 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-15 21:51:55,207 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-15 21:51:55,207 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-15 21:51:55,208 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-15 21:51:55,208 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-15 21:51:55,208 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-15 21:51:55,208 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-15 21:51:55,209 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-15 21:51:55,209 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-15 21:51:55,209 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-15 21:51:55,209 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-15 21:51:55,210 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2019-11-15 21:51:55,210 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-11-15 21:51:55,210 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-15 21:51:55,211 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-15 21:51:55,211 INFO L138 SettingsManager]: * Logic for external solver=AUFBV Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_b7bd9b12-bea8-4843-a9ce-dda0f8de838e/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 064927d7c1e3d8158c8524deee46f65d988c7936 [2019-11-15 21:51:55,252 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-15 21:51:55,261 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-15 21:51:55,264 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-15 21:51:55,265 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-15 21:51:55,265 INFO L275 PluginConnector]: CDTParser initialized [2019-11-15 21:51:55,266 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_b7bd9b12-bea8-4843-a9ce-dda0f8de838e/bin/uautomizer/../../sv-benchmarks/c/float-newlib/double_req_bl_1232b.c [2019-11-15 21:51:55,314 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_b7bd9b12-bea8-4843-a9ce-dda0f8de838e/bin/uautomizer/data/704de2f65/85d5674e585a4fd79d6601de4857a0d3/FLAGbaa9ffb99 [2019-11-15 21:51:55,716 INFO L306 CDTParser]: Found 1 translation units. [2019-11-15 21:51:55,717 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_b7bd9b12-bea8-4843-a9ce-dda0f8de838e/sv-benchmarks/c/float-newlib/double_req_bl_1232b.c [2019-11-15 21:51:55,724 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_b7bd9b12-bea8-4843-a9ce-dda0f8de838e/bin/uautomizer/data/704de2f65/85d5674e585a4fd79d6601de4857a0d3/FLAGbaa9ffb99 [2019-11-15 21:51:56,057 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_b7bd9b12-bea8-4843-a9ce-dda0f8de838e/bin/uautomizer/data/704de2f65/85d5674e585a4fd79d6601de4857a0d3 [2019-11-15 21:51:56,060 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-15 21:51:56,061 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-15 21:51:56,066 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-15 21:51:56,066 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-15 21:51:56,071 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-15 21:51:56,072 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.11 09:51:56" (1/1) ... [2019-11-15 21:51:56,075 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@45398b5e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:51:56, skipping insertion in model container [2019-11-15 21:51:56,076 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.11 09:51:56" (1/1) ... [2019-11-15 21:51:56,084 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-15 21:51:56,108 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-15 21:51:56,338 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-15 21:51:56,347 INFO L188 MainTranslator]: Completed pre-run [2019-11-15 21:51:56,373 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-15 21:51:56,456 INFO L192 MainTranslator]: Completed translation [2019-11-15 21:51:56,459 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:51:56 WrapperNode [2019-11-15 21:51:56,459 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-15 21:51:56,460 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-15 21:51:56,460 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-15 21:51:56,460 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-15 21:51:56,468 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:51:56" (1/1) ... [2019-11-15 21:51:56,478 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:51:56" (1/1) ... [2019-11-15 21:51:56,506 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-15 21:51:56,506 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-15 21:51:56,507 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-15 21:51:56,507 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-15 21:51:56,515 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:51:56" (1/1) ... [2019-11-15 21:51:56,516 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:51:56" (1/1) ... [2019-11-15 21:51:56,520 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:51:56" (1/1) ... [2019-11-15 21:51:56,520 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:51:56" (1/1) ... [2019-11-15 21:51:56,531 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:51:56" (1/1) ... [2019-11-15 21:51:56,536 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:51:56" (1/1) ... [2019-11-15 21:51:56,538 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:51:56" (1/1) ... [2019-11-15 21:51:56,542 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-15 21:51:56,542 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-15 21:51:56,542 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-15 21:51:56,543 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-15 21:51:56,543 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:51:56" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b7bd9b12-bea8-4843-a9ce-dda0f8de838e/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-15 21:51:56,604 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2019-11-15 21:51:56,604 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-15 21:51:56,605 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2019-11-15 21:51:56,605 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-15 21:51:56,605 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-15 21:51:56,605 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-15 21:51:57,150 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-15 21:51:57,150 INFO L284 CfgBuilder]: Removed 18 assume(true) statements. [2019-11-15 21:51:57,151 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 09:51:57 BoogieIcfgContainer [2019-11-15 21:51:57,151 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-15 21:51:57,152 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-15 21:51:57,152 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-15 21:51:57,155 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-15 21:51:57,155 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.11 09:51:56" (1/3) ... [2019-11-15 21:51:57,156 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e9a476e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.11 09:51:57, skipping insertion in model container [2019-11-15 21:51:57,156 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:51:56" (2/3) ... [2019-11-15 21:51:57,157 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e9a476e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.11 09:51:57, skipping insertion in model container [2019-11-15 21:51:57,157 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 09:51:57" (3/3) ... [2019-11-15 21:51:57,158 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1232b.c [2019-11-15 21:51:57,167 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-15 21:51:57,174 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-15 21:51:57,185 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-15 21:51:57,218 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-15 21:51:57,218 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-15 21:51:57,219 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-15 21:51:57,219 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-15 21:51:57,219 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-15 21:51:57,219 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-15 21:51:57,219 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-15 21:51:57,219 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-15 21:51:57,237 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2019-11-15 21:51:57,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-15 21:51:57,242 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 21:51:57,242 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 21:51:57,244 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 21:51:57,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 21:51:57,248 INFO L82 PathProgramCache]: Analyzing trace with hash -958075201, now seen corresponding path program 1 times [2019-11-15 21:51:57,257 INFO L157 tionRefinementEngine]: Executing refinement strategy WOLF [2019-11-15 21:51:57,257 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1195531538] [2019-11-15 21:51:57,257 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b7bd9b12-bea8-4843-a9ce-dda0f8de838e/bin/uautomizer/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2019-11-15 21:51:57,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:51:57,357 INFO L256 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 1 conjunts are in the unsatisfiable core [2019-11-15 21:51:57,362 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 21:51:57,378 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 21:51:57,378 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-15 21:51:57,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 21:51:57,384 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1195531538] [2019-11-15 21:51:57,385 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-15 21:51:57,385 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2019-11-15 21:51:57,386 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802094269] [2019-11-15 21:51:57,390 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-15 21:51:57,391 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-15 21:51:57,403 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-15 21:51:57,403 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-15 21:51:57,405 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 2 states. [2019-11-15 21:51:57,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 21:51:57,420 INFO L93 Difference]: Finished difference Result 62 states and 98 transitions. [2019-11-15 21:51:57,420 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-15 21:51:57,421 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2019-11-15 21:51:57,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 21:51:57,433 INFO L225 Difference]: With dead ends: 62 [2019-11-15 21:51:57,433 INFO L226 Difference]: Without dead ends: 29 [2019-11-15 21:51:57,439 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-15 21:51:57,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2019-11-15 21:51:57,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2019-11-15 21:51:57,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2019-11-15 21:51:57,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 40 transitions. [2019-11-15 21:51:57,480 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 40 transitions. Word has length 10 [2019-11-15 21:51:57,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 21:51:57,481 INFO L462 AbstractCegarLoop]: Abstraction has 29 states and 40 transitions. [2019-11-15 21:51:57,481 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-15 21:51:57,481 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 40 transitions. [2019-11-15 21:51:57,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-15 21:51:57,482 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 21:51:57,482 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 21:51:57,683 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2019-11-15 21:51:57,683 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 21:51:57,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 21:51:57,683 INFO L82 PathProgramCache]: Analyzing trace with hash 1001584898, now seen corresponding path program 1 times [2019-11-15 21:51:57,685 INFO L157 tionRefinementEngine]: Executing refinement strategy WOLF [2019-11-15 21:51:57,686 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1625697018] [2019-11-15 21:51:57,686 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b7bd9b12-bea8-4843-a9ce-dda0f8de838e/bin/uautomizer/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2019-11-15 21:51:57,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:51:57,753 INFO L256 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-15 21:51:57,754 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 21:51:57,787 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 21:51:57,788 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-15 21:51:57,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 21:51:57,822 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1625697018] [2019-11-15 21:51:57,822 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-15 21:51:57,822 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2019-11-15 21:51:57,822 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273857815] [2019-11-15 21:51:57,824 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-15 21:51:57,824 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-15 21:51:57,825 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-15 21:51:57,825 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-15 21:51:57,825 INFO L87 Difference]: Start difference. First operand 29 states and 40 transitions. Second operand 6 states. [2019-11-15 21:51:58,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 21:51:58,155 INFO L93 Difference]: Finished difference Result 68 states and 85 transitions. [2019-11-15 21:51:58,155 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-15 21:51:58,156 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2019-11-15 21:51:58,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 21:51:58,157 INFO L225 Difference]: With dead ends: 68 [2019-11-15 21:51:58,157 INFO L226 Difference]: Without dead ends: 59 [2019-11-15 21:51:58,158 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2019-11-15 21:51:58,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2019-11-15 21:51:58,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 31. [2019-11-15 21:51:58,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2019-11-15 21:51:58,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 42 transitions. [2019-11-15 21:51:58,166 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 42 transitions. Word has length 11 [2019-11-15 21:51:58,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 21:51:58,166 INFO L462 AbstractCegarLoop]: Abstraction has 31 states and 42 transitions. [2019-11-15 21:51:58,167 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-15 21:51:58,167 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 42 transitions. [2019-11-15 21:51:58,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-11-15 21:51:58,168 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 21:51:58,168 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 21:51:58,375 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2019-11-15 21:51:58,376 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 21:51:58,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 21:51:58,377 INFO L82 PathProgramCache]: Analyzing trace with hash 1219247017, now seen corresponding path program 1 times [2019-11-15 21:51:58,378 INFO L157 tionRefinementEngine]: Executing refinement strategy WOLF [2019-11-15 21:51:58,378 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [227930060] [2019-11-15 21:51:58,378 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b7bd9b12-bea8-4843-a9ce-dda0f8de838e/bin/uautomizer/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2019-11-15 21:51:58,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:51:58,471 INFO L256 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 9 conjunts are in the unsatisfiable core [2019-11-15 21:51:58,472 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 21:51:58,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 21:51:58,530 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-15 21:51:58,548 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-15 21:51:58,617 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 21:51:58,617 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [227930060] [2019-11-15 21:51:58,617 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-15 21:51:58,618 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2019-11-15 21:51:58,618 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831909541] [2019-11-15 21:51:58,618 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-15 21:51:58,619 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-15 21:51:58,619 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-15 21:51:58,619 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-15 21:51:58,620 INFO L87 Difference]: Start difference. First operand 31 states and 42 transitions. Second operand 6 states. [2019-11-15 21:51:58,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 21:51:58,753 INFO L93 Difference]: Finished difference Result 52 states and 69 transitions. [2019-11-15 21:51:58,756 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-15 21:51:58,756 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2019-11-15 21:51:58,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 21:51:58,757 INFO L225 Difference]: With dead ends: 52 [2019-11-15 21:51:58,757 INFO L226 Difference]: Without dead ends: 28 [2019-11-15 21:51:58,758 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-11-15 21:51:58,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2019-11-15 21:51:58,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2019-11-15 21:51:58,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2019-11-15 21:51:58,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 35 transitions. [2019-11-15 21:51:58,764 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 35 transitions. Word has length 14 [2019-11-15 21:51:58,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 21:51:58,765 INFO L462 AbstractCegarLoop]: Abstraction has 28 states and 35 transitions. [2019-11-15 21:51:58,765 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-15 21:51:58,765 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 35 transitions. [2019-11-15 21:51:58,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-11-15 21:51:58,766 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 21:51:58,766 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 21:51:58,975 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2019-11-15 21:51:58,975 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 21:51:58,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 21:51:58,975 INFO L82 PathProgramCache]: Analyzing trace with hash 1012446717, now seen corresponding path program 1 times [2019-11-15 21:51:58,976 INFO L157 tionRefinementEngine]: Executing refinement strategy WOLF [2019-11-15 21:51:58,976 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [924771249] [2019-11-15 21:51:58,976 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b7bd9b12-bea8-4843-a9ce-dda0f8de838e/bin/uautomizer/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2019-11-15 21:51:59,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:51:59,073 INFO L256 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-15 21:51:59,075 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 21:51:59,089 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 21:51:59,090 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-15 21:51:59,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 21:51:59,107 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [924771249] [2019-11-15 21:51:59,108 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-15 21:51:59,108 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2019-11-15 21:51:59,108 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850580368] [2019-11-15 21:51:59,108 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-15 21:51:59,109 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-15 21:51:59,109 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-15 21:51:59,109 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-15 21:51:59,109 INFO L87 Difference]: Start difference. First operand 28 states and 35 transitions. Second operand 6 states. [2019-11-15 21:51:59,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 21:51:59,327 INFO L93 Difference]: Finished difference Result 65 states and 76 transitions. [2019-11-15 21:51:59,331 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-15 21:51:59,332 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2019-11-15 21:51:59,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 21:51:59,333 INFO L225 Difference]: With dead ends: 65 [2019-11-15 21:51:59,333 INFO L226 Difference]: Without dead ends: 56 [2019-11-15 21:51:59,333 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2019-11-15 21:51:59,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2019-11-15 21:51:59,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 30. [2019-11-15 21:51:59,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2019-11-15 21:51:59,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 37 transitions. [2019-11-15 21:51:59,339 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 37 transitions. Word has length 16 [2019-11-15 21:51:59,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 21:51:59,340 INFO L462 AbstractCegarLoop]: Abstraction has 30 states and 37 transitions. [2019-11-15 21:51:59,340 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-15 21:51:59,340 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 37 transitions. [2019-11-15 21:51:59,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-11-15 21:51:59,341 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 21:51:59,341 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 21:51:59,551 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2019-11-15 21:51:59,552 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 21:51:59,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 21:51:59,552 INFO L82 PathProgramCache]: Analyzing trace with hash -414082333, now seen corresponding path program 1 times [2019-11-15 21:51:59,552 INFO L157 tionRefinementEngine]: Executing refinement strategy WOLF [2019-11-15 21:51:59,553 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [982607855] [2019-11-15 21:51:59,553 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b7bd9b12-bea8-4843-a9ce-dda0f8de838e/bin/uautomizer/mathsat Starting monitored process 6 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with mathsat -unsat_core_generation=3 [2019-11-15 21:51:59,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:51:59,663 INFO L256 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 7 conjunts are in the unsatisfiable core [2019-11-15 21:51:59,665 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 21:51:59,685 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 21:51:59,685 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-15 21:51:59,728 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 21:51:59,728 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [982607855] [2019-11-15 21:51:59,728 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-15 21:51:59,729 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2019-11-15 21:51:59,729 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453892744] [2019-11-15 21:51:59,729 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-15 21:51:59,729 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-15 21:51:59,729 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-15 21:51:59,730 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-15 21:51:59,730 INFO L87 Difference]: Start difference. First operand 30 states and 37 transitions. Second operand 4 states. [2019-11-15 21:51:59,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 21:51:59,748 INFO L93 Difference]: Finished difference Result 40 states and 47 transitions. [2019-11-15 21:51:59,749 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-15 21:51:59,749 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2019-11-15 21:51:59,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 21:51:59,750 INFO L225 Difference]: With dead ends: 40 [2019-11-15 21:51:59,750 INFO L226 Difference]: Without dead ends: 30 [2019-11-15 21:51:59,751 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 30 SyntacticMatches, 2 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-15 21:51:59,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2019-11-15 21:51:59,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2019-11-15 21:51:59,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2019-11-15 21:51:59,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 36 transitions. [2019-11-15 21:51:59,756 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 36 transitions. Word has length 18 [2019-11-15 21:51:59,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 21:51:59,756 INFO L462 AbstractCegarLoop]: Abstraction has 30 states and 36 transitions. [2019-11-15 21:51:59,756 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-15 21:51:59,756 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 36 transitions. [2019-11-15 21:51:59,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-11-15 21:51:59,757 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 21:51:59,757 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 21:51:59,969 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2019-11-15 21:51:59,970 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 21:51:59,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 21:51:59,970 INFO L82 PathProgramCache]: Analyzing trace with hash -356824031, now seen corresponding path program 1 times [2019-11-15 21:51:59,970 INFO L157 tionRefinementEngine]: Executing refinement strategy WOLF [2019-11-15 21:51:59,971 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [371406396] [2019-11-15 21:51:59,971 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b7bd9b12-bea8-4843-a9ce-dda0f8de838e/bin/uautomizer/mathsat Starting monitored process 7 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with mathsat -unsat_core_generation=3 [2019-11-15 21:52:00,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:52:00,080 INFO L256 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-15 21:52:00,081 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 21:52:00,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 21:52:00,122 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-15 21:52:00,123 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-15 21:52:00,170 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 21:52:00,170 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [371406396] [2019-11-15 21:52:00,170 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-15 21:52:00,170 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 9 [2019-11-15 21:52:00,170 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582981991] [2019-11-15 21:52:00,171 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-15 21:52:00,171 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-15 21:52:00,171 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-15 21:52:00,171 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2019-11-15 21:52:00,172 INFO L87 Difference]: Start difference. First operand 30 states and 36 transitions. Second operand 9 states. [2019-11-15 21:52:00,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 21:52:00,311 INFO L93 Difference]: Finished difference Result 42 states and 47 transitions. [2019-11-15 21:52:00,312 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-15 21:52:00,312 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 18 [2019-11-15 21:52:00,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 21:52:00,313 INFO L225 Difference]: With dead ends: 42 [2019-11-15 21:52:00,313 INFO L226 Difference]: Without dead ends: 39 [2019-11-15 21:52:00,313 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2019-11-15 21:52:00,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2019-11-15 21:52:00,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 32. [2019-11-15 21:52:00,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2019-11-15 21:52:00,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 38 transitions. [2019-11-15 21:52:00,318 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 38 transitions. Word has length 18 [2019-11-15 21:52:00,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 21:52:00,319 INFO L462 AbstractCegarLoop]: Abstraction has 32 states and 38 transitions. [2019-11-15 21:52:00,319 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-15 21:52:00,319 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 38 transitions. [2019-11-15 21:52:00,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-11-15 21:52:00,320 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 21:52:00,320 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 21:52:00,523 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 mathsat -unsat_core_generation=3 [2019-11-15 21:52:00,524 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 21:52:00,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 21:52:00,524 INFO L82 PathProgramCache]: Analyzing trace with hash -208358251, now seen corresponding path program 1 times [2019-11-15 21:52:00,525 INFO L157 tionRefinementEngine]: Executing refinement strategy WOLF [2019-11-15 21:52:00,525 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [101694403] [2019-11-15 21:52:00,525 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b7bd9b12-bea8-4843-a9ce-dda0f8de838e/bin/uautomizer/mathsat Starting monitored process 8 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with mathsat -unsat_core_generation=3 [2019-11-15 21:52:00,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:52:00,633 INFO L256 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 9 conjunts are in the unsatisfiable core [2019-11-15 21:52:00,635 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 21:52:00,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 21:52:00,673 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-15 21:52:00,734 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 21:52:00,735 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [101694403] [2019-11-15 21:52:00,735 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-15 21:52:00,735 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2019-11-15 21:52:00,735 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824884363] [2019-11-15 21:52:00,736 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-15 21:52:00,736 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-15 21:52:00,736 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-15 21:52:00,736 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2019-11-15 21:52:00,737 INFO L87 Difference]: Start difference. First operand 32 states and 38 transitions. Second operand 8 states. [2019-11-15 21:52:00,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 21:52:00,863 INFO L93 Difference]: Finished difference Result 45 states and 50 transitions. [2019-11-15 21:52:00,864 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-15 21:52:00,864 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2019-11-15 21:52:00,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 21:52:00,865 INFO L225 Difference]: With dead ends: 45 [2019-11-15 21:52:00,865 INFO L226 Difference]: Without dead ends: 27 [2019-11-15 21:52:00,865 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2019-11-15 21:52:00,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2019-11-15 21:52:00,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2019-11-15 21:52:00,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2019-11-15 21:52:00,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions. [2019-11-15 21:52:00,869 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 28 transitions. Word has length 19 [2019-11-15 21:52:00,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 21:52:00,870 INFO L462 AbstractCegarLoop]: Abstraction has 27 states and 28 transitions. [2019-11-15 21:52:00,870 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-15 21:52:00,871 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 28 transitions. [2019-11-15 21:52:00,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-11-15 21:52:00,871 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 21:52:00,871 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 21:52:01,083 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 mathsat -unsat_core_generation=3 [2019-11-15 21:52:01,084 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 21:52:01,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 21:52:01,084 INFO L82 PathProgramCache]: Analyzing trace with hash -1524231306, now seen corresponding path program 1 times [2019-11-15 21:52:01,085 INFO L157 tionRefinementEngine]: Executing refinement strategy WOLF [2019-11-15 21:52:01,085 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [542895835] [2019-11-15 21:52:01,085 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b7bd9b12-bea8-4843-a9ce-dda0f8de838e/bin/uautomizer/mathsat Starting monitored process 9 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with mathsat -unsat_core_generation=3 [2019-11-15 21:52:01,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 21:52:01,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 21:52:01,398 INFO L168 tionRefinementEngine]: Strategy WOLF found a feasible trace [2019-11-15 21:52:01,399 INFO L445 BasicCegarLoop]: Counterexample might be feasible [2019-11-15 21:52:01,599 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 mathsat -unsat_core_generation=3 [2019-11-15 21:52:01,635 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.11 09:52:01 BoogieIcfgContainer [2019-11-15 21:52:01,635 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-15 21:52:01,636 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-15 21:52:01,636 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-15 21:52:01,637 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-15 21:52:01,637 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 09:51:57" (3/4) ... [2019-11-15 21:52:01,640 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-15 21:52:01,700 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_b7bd9b12-bea8-4843-a9ce-dda0f8de838e/bin/uautomizer/witness.graphml [2019-11-15 21:52:01,700 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-15 21:52:01,703 INFO L168 Benchmark]: Toolchain (without parser) took 5640.86 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 174.6 MB). Free memory was 947.0 MB in the beginning and 928.9 MB in the end (delta: 18.1 MB). Peak memory consumption was 192.7 MB. Max. memory is 11.5 GB. [2019-11-15 21:52:01,703 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 1.0 GB. Free memory is still 977.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 21:52:01,704 INFO L168 Benchmark]: CACSL2BoogieTranslator took 394.07 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 174.6 MB). Free memory was 947.0 MB in the beginning and 1.2 GB in the end (delta: -217.5 MB). Peak memory consumption was 23.3 MB. Max. memory is 11.5 GB. [2019-11-15 21:52:01,704 INFO L168 Benchmark]: Boogie Procedure Inliner took 46.08 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 21:52:01,705 INFO L168 Benchmark]: Boogie Preprocessor took 35.65 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 21:52:01,705 INFO L168 Benchmark]: RCFGBuilder took 608.97 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 31.0 MB). Peak memory consumption was 31.0 MB. Max. memory is 11.5 GB. [2019-11-15 21:52:01,706 INFO L168 Benchmark]: TraceAbstraction took 4483.47 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 935.2 MB in the end (delta: 198.4 MB). Peak memory consumption was 198.4 MB. Max. memory is 11.5 GB. [2019-11-15 21:52:01,706 INFO L168 Benchmark]: Witness Printer took 64.61 ms. Allocated memory is still 1.2 GB. Free memory was 935.2 MB in the beginning and 928.9 MB in the end (delta: 6.3 MB). Peak memory consumption was 6.3 MB. Max. memory is 11.5 GB. [2019-11-15 21:52:01,709 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 1.0 GB. Free memory is still 977.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 394.07 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 174.6 MB). Free memory was 947.0 MB in the beginning and 1.2 GB in the end (delta: -217.5 MB). Peak memory consumption was 23.3 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 46.08 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 35.65 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 608.97 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 31.0 MB). Peak memory consumption was 31.0 MB. Max. memory is 11.5 GB. * TraceAbstraction took 4483.47 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 935.2 MB in the end (delta: 198.4 MB). Peak memory consumption was 198.4 MB. Max. memory is 11.5 GB. * Witness Printer took 64.61 ms. Allocated memory is still 1.2 GB. Free memory was 935.2 MB in the beginning and 928.9 MB in the end (delta: 6.3 MB). Peak memory consumption was 6.3 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 80]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L74] double x = -0.0; [L75] double y = 0.0; [L19] __uint32_t msw, lsw; [L22] ieee_double_shape_type ew_u; [L23] ew_u.value = (x) [L24] EXPR ew_u.parts.msw [L24] (msw) = ew_u.parts.msw [L25] EXPR ew_u.parts.lsw [L25] (lsw) = ew_u.parts.lsw [L28-L29] COND TRUE (msw == 0x00000000 && lsw == 0x00000000) || (msw == 0x80000000 && lsw == 0x00000000) [L30] return 2; [L46] COND FALSE !(__fpclassify_double(x) == 0) [L19] __uint32_t msw, lsw; [L22] ieee_double_shape_type ew_u; [L23] ew_u.value = (x) [L24] EXPR ew_u.parts.msw [L24] (msw) = ew_u.parts.msw [L25] EXPR ew_u.parts.lsw [L25] (lsw) = ew_u.parts.lsw [L28-L29] COND TRUE (msw == 0x00000000 && lsw == 0x00000000) || (msw == 0x80000000 && lsw == 0x00000000) [L30] return 2; [L48] COND FALSE !(__fpclassify_double(y) == 0) [L51] EXPR x < y ? x : y [L51] return x < y ? x : y; [L76] double res = fmin_double(x, y); [L79] EXPR res == -0.0 && __signbit_double(res) == 1 [L55] __uint32_t msw; [L58] ieee_double_shape_type gh_u; [L59] gh_u.value = (x) [L60] EXPR gh_u.parts.msw [L60] (msw) = gh_u.parts.msw [L63] return (msw & 0x80000000) != 0; [L79] EXPR res == -0.0 && __signbit_double(res) == 1 [L79] COND TRUE !(res == -0.0 && __signbit_double(res) == 1) [L80] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 32 locations, 1 error locations. Result: UNSAFE, OverallTime: 4.4s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 1.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 234 SDtfs, 290 SDslu, 362 SDs, 0 SdLazy, 112 SolverSat, 21 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 209 GetRequests, 168 SyntacticMatches, 3 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=32occurred 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, 7 MinimizatonAttempts, 61 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 128 NumberOfCodeBlocks, 128 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 198 ConstructedInterpolants, 15 QuantifiedInterpolants, 10764 SizeOfPredicates, 27 NumberOfNonLiveVariables, 374 ConjunctsInSsa, 40 ConjunctsInUnsatCore, 14 InterpolantComputations, 14 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...