./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/double_req_bl_0662a.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_f0e88737-ffab-4ec7-bffb-577b4b3445fe/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_f0e88737-ffab-4ec7-bffb-577b4b3445fe/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_f0e88737-ffab-4ec7-bffb-577b4b3445fe/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_f0e88737-ffab-4ec7-bffb-577b4b3445fe/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_0662a.c -s /tmp/vcloud-vcloud-master/worker/run_dir_f0e88737-ffab-4ec7-bffb-577b4b3445fe/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_f0e88737-ffab-4ec7-bffb-577b4b3445fe/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 c8db64e82d1b178f8644abd34ffdb7278ee391d6 ............................................................................................................................................................................................................................................................................................................................ 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_f0e88737-ffab-4ec7-bffb-577b4b3445fe/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_f0e88737-ffab-4ec7-bffb-577b4b3445fe/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_f0e88737-ffab-4ec7-bffb-577b4b3445fe/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_f0e88737-ffab-4ec7-bffb-577b4b3445fe/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_0662a.c -s /tmp/vcloud-vcloud-master/worker/run_dir_f0e88737-ffab-4ec7-bffb-577b4b3445fe/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_f0e88737-ffab-4ec7-bffb-577b4b3445fe/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 c8db64e82d1b178f8644abd34ffdb7278ee391d6 .............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: NullPointerException: null --- Real Ultimate output --- This is Ultimate 0.1.24-cad4683 [2019-11-15 22:54:10,646 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-15 22:54:10,648 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-15 22:54:10,657 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-15 22:54:10,658 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-15 22:54:10,659 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-15 22:54:10,660 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-15 22:54:10,662 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-15 22:54:10,664 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-15 22:54:10,665 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-15 22:54:10,666 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-15 22:54:10,667 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-15 22:54:10,667 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-15 22:54:10,668 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-15 22:54:10,669 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-15 22:54:10,670 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-15 22:54:10,671 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-15 22:54:10,672 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-15 22:54:10,674 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-15 22:54:10,676 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-15 22:54:10,678 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-15 22:54:10,679 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-15 22:54:10,680 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-15 22:54:10,681 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-15 22:54:10,684 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-15 22:54:10,684 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-15 22:54:10,684 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-15 22:54:10,685 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-15 22:54:10,686 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-15 22:54:10,687 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-15 22:54:10,687 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-15 22:54:10,688 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-15 22:54:10,689 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-15 22:54:10,690 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-15 22:54:10,691 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-15 22:54:10,691 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-15 22:54:10,692 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-15 22:54:10,692 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-15 22:54:10,692 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-15 22:54:10,694 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-15 22:54:10,694 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-15 22:54:10,695 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_f0e88737-ffab-4ec7-bffb-577b4b3445fe/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-15 22:54:10,708 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-15 22:54:10,709 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-15 22:54:10,710 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-15 22:54:10,710 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-15 22:54:10,710 INFO L138 SettingsManager]: * Use SBE=true [2019-11-15 22:54:10,711 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-15 22:54:10,711 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-15 22:54:10,711 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-15 22:54:10,711 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-15 22:54:10,712 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-15 22:54:10,712 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-15 22:54:10,712 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-15 22:54:10,712 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-15 22:54:10,712 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-15 22:54:10,713 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-15 22:54:10,713 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-15 22:54:10,713 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-15 22:54:10,713 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-15 22:54:10,714 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-15 22:54:10,714 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-15 22:54:10,714 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-15 22:54:10,714 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-15 22:54:10,714 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-15 22:54:10,715 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-15 22:54:10,715 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-15 22:54:10,715 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-15 22:54:10,715 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-15 22:54:10,715 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-15 22:54:10,716 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_f0e88737-ffab-4ec7-bffb-577b4b3445fe/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 -> c8db64e82d1b178f8644abd34ffdb7278ee391d6 [2019-11-15 22:54:10,741 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-15 22:54:10,750 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-15 22:54:10,753 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-15 22:54:10,755 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-15 22:54:10,755 INFO L275 PluginConnector]: CDTParser initialized [2019-11-15 22:54:10,756 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_f0e88737-ffab-4ec7-bffb-577b4b3445fe/bin/uautomizer/../../sv-benchmarks/c/float-newlib/double_req_bl_0662a.c [2019-11-15 22:54:10,806 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_f0e88737-ffab-4ec7-bffb-577b4b3445fe/bin/uautomizer/data/24363cf4f/50907ce9187347889c439f9f7cfeddd5/FLAG06b297c42 [2019-11-15 22:54:11,279 INFO L306 CDTParser]: Found 1 translation units. [2019-11-15 22:54:11,280 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_f0e88737-ffab-4ec7-bffb-577b4b3445fe/sv-benchmarks/c/float-newlib/double_req_bl_0662a.c [2019-11-15 22:54:11,293 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_f0e88737-ffab-4ec7-bffb-577b4b3445fe/bin/uautomizer/data/24363cf4f/50907ce9187347889c439f9f7cfeddd5/FLAG06b297c42 [2019-11-15 22:54:11,596 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_f0e88737-ffab-4ec7-bffb-577b4b3445fe/bin/uautomizer/data/24363cf4f/50907ce9187347889c439f9f7cfeddd5 [2019-11-15 22:54:11,598 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-15 22:54:11,599 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-15 22:54:11,600 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-15 22:54:11,600 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-15 22:54:11,606 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-15 22:54:11,607 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.11 10:54:11" (1/1) ... [2019-11-15 22:54:11,609 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@575f1204 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:54:11, skipping insertion in model container [2019-11-15 22:54:11,609 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.11 10:54:11" (1/1) ... [2019-11-15 22:54:11,613 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-15 22:54:11,637 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-15 22:54:11,890 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-15 22:54:11,897 INFO L188 MainTranslator]: Completed pre-run [2019-11-15 22:54:11,964 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-15 22:54:11,987 INFO L192 MainTranslator]: Completed translation [2019-11-15 22:54:11,987 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:54:11 WrapperNode [2019-11-15 22:54:11,988 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-15 22:54:11,988 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-15 22:54:11,989 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-15 22:54:11,989 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-15 22:54:12,001 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:54:11" (1/1) ... [2019-11-15 22:54:12,023 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:54:11" (1/1) ... [2019-11-15 22:54:12,060 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-15 22:54:12,061 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-15 22:54:12,061 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-15 22:54:12,061 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-15 22:54:12,069 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:54:11" (1/1) ... [2019-11-15 22:54:12,069 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:54:11" (1/1) ... [2019-11-15 22:54:12,075 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:54:11" (1/1) ... [2019-11-15 22:54:12,075 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:54:11" (1/1) ... [2019-11-15 22:54:12,101 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:54:11" (1/1) ... [2019-11-15 22:54:12,122 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:54:11" (1/1) ... [2019-11-15 22:54:12,128 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:54:11" (1/1) ... [2019-11-15 22:54:12,144 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-15 22:54:12,146 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-15 22:54:12,146 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-15 22:54:12,146 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-15 22:54:12,148 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:54:11" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f0e88737-ffab-4ec7-bffb-577b4b3445fe/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 22:54:12,214 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-15 22:54:12,214 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2019-11-15 22:54:12,214 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-15 22:54:12,214 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2019-11-15 22:54:12,216 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-15 22:54:12,216 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-15 22:54:12,217 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-15 22:54:12,217 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2019-11-15 22:54:12,217 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-15 22:54:13,001 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-15 22:54:13,001 INFO L284 CfgBuilder]: Removed 44 assume(true) statements. [2019-11-15 22:54:13,002 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 10:54:13 BoogieIcfgContainer [2019-11-15 22:54:13,002 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-15 22:54:13,006 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-15 22:54:13,006 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-15 22:54:13,008 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-15 22:54:13,009 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.11 10:54:11" (1/3) ... [2019-11-15 22:54:13,009 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11c45a17 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.11 10:54:13, skipping insertion in model container [2019-11-15 22:54:13,009 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:54:11" (2/3) ... [2019-11-15 22:54:13,012 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11c45a17 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.11 10:54:13, skipping insertion in model container [2019-11-15 22:54:13,012 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 10:54:13" (3/3) ... [2019-11-15 22:54:13,017 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_0662a.c [2019-11-15 22:54:13,026 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-15 22:54:13,033 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-15 22:54:13,043 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-15 22:54:13,067 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-15 22:54:13,068 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-15 22:54:13,068 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-15 22:54:13,068 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-15 22:54:13,068 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-15 22:54:13,068 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-15 22:54:13,068 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-15 22:54:13,069 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-15 22:54:13,085 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states. [2019-11-15 22:54:13,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-15 22:54:13,091 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 22:54:13,092 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 22:54:13,093 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 22:54:13,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 22:54:13,098 INFO L82 PathProgramCache]: Analyzing trace with hash 1059427896, now seen corresponding path program 1 times [2019-11-15 22:54:13,107 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 22:54:13,107 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1556048770] [2019-11-15 22:54:13,107 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:54:13,107 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:54:13,107 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 22:54:13,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:54:13,227 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 22:54:13,227 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1556048770] [2019-11-15 22:54:13,228 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 22:54:13,228 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-15 22:54:13,229 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583239345] [2019-11-15 22:54:13,232 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-15 22:54:13,233 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 22:54:13,245 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-15 22:54:13,246 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-15 22:54:13,248 INFO L87 Difference]: Start difference. First operand 115 states. Second operand 2 states. [2019-11-15 22:54:13,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 22:54:13,277 INFO L93 Difference]: Finished difference Result 227 states and 382 transitions. [2019-11-15 22:54:13,277 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-15 22:54:13,278 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2019-11-15 22:54:13,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 22:54:13,289 INFO L225 Difference]: With dead ends: 227 [2019-11-15 22:54:13,289 INFO L226 Difference]: Without dead ends: 111 [2019-11-15 22:54:13,293 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 22:54:13,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2019-11-15 22:54:13,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 111. [2019-11-15 22:54:13,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2019-11-15 22:54:13,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 159 transitions. [2019-11-15 22:54:13,335 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 159 transitions. Word has length 11 [2019-11-15 22:54:13,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 22:54:13,335 INFO L462 AbstractCegarLoop]: Abstraction has 111 states and 159 transitions. [2019-11-15 22:54:13,336 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-15 22:54:13,336 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 159 transitions. [2019-11-15 22:54:13,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-11-15 22:54:13,337 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 22:54:13,337 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 22:54:13,337 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 22:54:13,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 22:54:13,338 INFO L82 PathProgramCache]: Analyzing trace with hash -7417919, now seen corresponding path program 1 times [2019-11-15 22:54:13,338 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 22:54:13,338 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1025358083] [2019-11-15 22:54:13,338 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:54:13,338 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:54:13,339 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 22:54:13,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 22:54:13,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 22:54:13,553 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-15 22:54:13,553 INFO L445 BasicCegarLoop]: Counterexample might be feasible [2019-11-15 22:54:13,590 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.11 10:54:13 BoogieIcfgContainer [2019-11-15 22:54:13,590 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-15 22:54:13,591 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-15 22:54:13,591 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-15 22:54:13,591 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-15 22:54:13,592 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 10:54:13" (3/4) ... [2019-11-15 22:54:13,595 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-11-15 22:54:13,596 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-15 22:54:13,598 INFO L168 Benchmark]: Toolchain (without parser) took 1997.76 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 128.5 MB). Free memory was 944.8 MB in the beginning and 1.0 GB in the end (delta: -62.2 MB). Peak memory consumption was 66.3 MB. Max. memory is 11.5 GB. [2019-11-15 22:54:13,598 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 1.0 GB. Free memory is still 962.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 22:54:13,599 INFO L168 Benchmark]: CACSL2BoogieTranslator took 388.20 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 128.5 MB). Free memory was 944.8 MB in the beginning and 1.1 GB in the end (delta: -171.8 MB). Peak memory consumption was 23.0 MB. Max. memory is 11.5 GB. [2019-11-15 22:54:13,600 INFO L168 Benchmark]: Boogie Procedure Inliner took 72.36 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2019-11-15 22:54:13,601 INFO L168 Benchmark]: Boogie Preprocessor took 84.56 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 22:54:13,601 INFO L168 Benchmark]: RCFGBuilder took 859.00 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 61.3 MB). Peak memory consumption was 61.3 MB. Max. memory is 11.5 GB. [2019-11-15 22:54:13,602 INFO L168 Benchmark]: TraceAbstraction took 584.84 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 43.0 MB). Peak memory consumption was 43.0 MB. Max. memory is 11.5 GB. [2019-11-15 22:54:13,602 INFO L168 Benchmark]: Witness Printer took 4.83 ms. Allocated memory is still 1.2 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 22:54:13,606 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 1.0 GB. Free memory is still 962.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 388.20 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 128.5 MB). Free memory was 944.8 MB in the beginning and 1.1 GB in the end (delta: -171.8 MB). Peak memory consumption was 23.0 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 72.36 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 84.56 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 859.00 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 61.3 MB). Peak memory consumption was 61.3 MB. Max. memory is 11.5 GB. * TraceAbstraction took 584.84 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 43.0 MB). Peak memory consumption was 43.0 MB. Max. memory is 11.5 GB. * Witness Printer took 4.83 ms. Allocated memory is still 1.2 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: 260]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of bitwiseOr at line 162, overapproximation of someUnaryDOUBLEoperation at line 251, overapproximation of bitwiseAnd at line 160, overapproximation of someBinaryArithmeticDOUBLEoperation at line 163, overapproximation of someBinaryDOUBLEComparisonOperation at line 259. Possible FailurePath: [L37-L42] static const double atanhi_atan[] = { 4.63647609000806093515e-01, 7.85398163397448278999e-01, 9.82793723247329054082e-01, 1.57079632679489655800e+00, }; [L44-L49] static const double atanlo_atan[] = { 2.26987774529616870924e-17, 3.06161699786838301793e-17, 1.39033110312309984516e-17, 6.12323399573676603587e-17, }; [L51-L58] static const double aT_atan[] = { 3.33333333333329318027e-01, -1.99999999998764832476e-01, 1.42857142725034663711e-01, -1.11111104054623557880e-01, 9.09088713343650656196e-02, -7.69187620504482999495e-02, 6.66107313738753120669e-02, -5.83357013379057348645e-02, 4.97687799461593236017e-02, -3.65315727442169155270e-02, 1.62858201153657823623e-02, }; [L60-L62] static const double one_atan = 1.0, pi_o_4 = 7.8539816339744827900E-01, pi_o_2 = 1.5707963267948965580E+00, pi = 3.1415926535897931160E+00, huge_atan = 1.0e300; [L139-L140] static const double tiny_atan2 = 1.0e-300, zero_atan2 = 0.0, pi_lo_atan2 = 1.2246467991473531772E-16; VAL [aT_atan={1:0}, atanhi_atan={-2:0}, atanlo_atan={-3:0}, huge_atan=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, one_atan=1, pi=785398163397448279/250000000000000000, pi_lo_atan2=3061616997868382943/25000000000000000000000000000000000, pi_o_2=785398163397448279/500000000000000000, pi_o_4=785398163397448279/1000000000000000000, tiny_atan2=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, zero_atan2=0] [L251] double x = -0.0; [L252] double y = __VERIFIER_nondet_double(); [L254] COND TRUE y < 0.0 [L143] double z; [L144] __int32_t k, m, hx, hy, ix, iy; [L145] __uint32_t lx, ly; VAL [aT_atan={1:0}, atanhi_atan={-2:0}, atanlo_atan={-3:0}, huge_atan=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, one_atan=1, pi=785398163397448279/250000000000000000, pi_lo_atan2=3061616997868382943/25000000000000000000000000000000000, pi_o_2=785398163397448279/500000000000000000, pi_o_4=785398163397448279/1000000000000000000, tiny_atan2=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, zero_atan2=0] [L148] ieee_double_shape_type ew_u; [L149] ew_u.value = (x) [L150] EXPR ew_u.parts.msw [L150] (hx) = ew_u.parts.msw [L151] EXPR ew_u.parts.lsw [L151] (lx) = ew_u.parts.lsw [L153] ix = hx & 0x7fffffff VAL [aT_atan={1:0}, atanhi_atan={-2:0}, atanlo_atan={-3:0}, huge_atan=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, one_atan=1, pi=785398163397448279/250000000000000000, pi_lo_atan2=3061616997868382943/25000000000000000000000000000000000, pi_o_2=785398163397448279/500000000000000000, pi_o_4=785398163397448279/1000000000000000000, tiny_atan2=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, zero_atan2=0] [L155] ieee_double_shape_type ew_u; [L156] ew_u.value = (y) [L157] EXPR ew_u.parts.msw [L157] (hy) = ew_u.parts.msw [L158] EXPR ew_u.parts.lsw [L158] (ly) = ew_u.parts.lsw [L160] iy = hy & 0x7fffffff VAL [aT_atan={1:0}, atanhi_atan={-2:0}, atanlo_atan={-3:0}, huge_atan=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, one_atan=1, pi=785398163397448279/250000000000000000, pi_lo_atan2=3061616997868382943/25000000000000000000000000000000000, pi_o_2=785398163397448279/500000000000000000, pi_o_4=785398163397448279/1000000000000000000, tiny_atan2=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, zero_atan2=0] [L161-L162] COND TRUE ((ix | ((lx | -lx) >> 31)) > 0x7ff00000) || ((iy | ((ly | -ly) >> 31)) > 0x7ff00000) [L163] return x + y; VAL [aT_atan={1:0}, atanhi_atan={-2:0}, atanlo_atan={-3:0}, huge_atan=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, one_atan=1, pi=785398163397448279/250000000000000000, pi_lo_atan2=3061616997868382943/25000000000000000000000000000000000, pi_o_2=785398163397448279/500000000000000000, pi_o_4=785398163397448279/1000000000000000000, tiny_atan2=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, zero_atan2=0] [L256] double res = __ieee754_atan2(y, x); [L259] COND TRUE res != -pi_o_2 VAL [aT_atan={1:0}, atanhi_atan={-2:0}, atanlo_atan={-3:0}, huge_atan=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, one_atan=1, pi=785398163397448279/250000000000000000, pi_lo_atan2=3061616997868382943/25000000000000000000000000000000000, pi_o_2=785398163397448279/500000000000000000, pi_o_4=785398163397448279/1000000000000000000, tiny_atan2=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, zero_atan2=0] [L260] __VERIFIER_error() VAL [aT_atan={1:0}, atanhi_atan={-2:0}, atanlo_atan={-3:0}, huge_atan=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, one_atan=1, pi=785398163397448279/250000000000000000, pi_lo_atan2=3061616997868382943/25000000000000000000000000000000000, pi_o_2=785398163397448279/500000000000000000, pi_o_4=785398163397448279/1000000000000000000, tiny_atan2=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, zero_atan2=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 115 locations, 1 error locations. Result: UNSAFE, OverallTime: 0.5s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 164 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=115occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 24 NumberOfCodeBlocks, 24 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 10 ConstructedInterpolants, 0 QuantifiedInterpolants, 100 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, 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 22:54:15,699 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-15 22:54:15,700 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-15 22:54:15,718 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-15 22:54:15,718 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-15 22:54:15,720 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-15 22:54:15,722 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-15 22:54:15,731 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-15 22:54:15,734 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-15 22:54:15,738 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-15 22:54:15,739 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-15 22:54:15,742 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-15 22:54:15,742 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-15 22:54:15,744 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-15 22:54:15,745 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-15 22:54:15,746 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-15 22:54:15,747 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-15 22:54:15,750 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-15 22:54:15,752 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-15 22:54:15,756 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-15 22:54:15,759 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-15 22:54:15,761 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-15 22:54:15,763 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-15 22:54:15,765 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-15 22:54:15,768 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-15 22:54:15,768 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-15 22:54:15,769 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-15 22:54:15,770 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-15 22:54:15,770 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-15 22:54:15,773 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-15 22:54:15,773 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-15 22:54:15,774 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-15 22:54:15,775 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-15 22:54:15,775 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-15 22:54:15,776 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-15 22:54:15,777 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-15 22:54:15,777 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-15 22:54:15,778 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-15 22:54:15,778 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-15 22:54:15,780 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-15 22:54:15,781 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-15 22:54:15,782 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_f0e88737-ffab-4ec7-bffb-577b4b3445fe/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2019-11-15 22:54:15,808 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-15 22:54:15,818 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-15 22:54:15,819 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-15 22:54:15,819 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-15 22:54:15,819 INFO L138 SettingsManager]: * Use SBE=true [2019-11-15 22:54:15,820 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-15 22:54:15,820 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-15 22:54:15,820 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-15 22:54:15,820 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-15 22:54:15,821 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-15 22:54:15,821 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-15 22:54:15,821 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-15 22:54:15,821 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-11-15 22:54:15,821 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-11-15 22:54:15,822 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-15 22:54:15,822 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-15 22:54:15,823 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-15 22:54:15,823 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-15 22:54:15,823 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-15 22:54:15,823 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-15 22:54:15,823 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-15 22:54:15,824 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-15 22:54:15,824 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-15 22:54:15,824 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-15 22:54:15,824 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-15 22:54:15,825 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-15 22:54:15,825 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2019-11-15 22:54:15,825 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-11-15 22:54:15,826 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-15 22:54:15,826 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-15 22:54:15,826 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_f0e88737-ffab-4ec7-bffb-577b4b3445fe/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 -> c8db64e82d1b178f8644abd34ffdb7278ee391d6 [2019-11-15 22:54:15,860 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-15 22:54:15,870 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-15 22:54:15,874 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-15 22:54:15,875 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-15 22:54:15,875 INFO L275 PluginConnector]: CDTParser initialized [2019-11-15 22:54:15,876 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_f0e88737-ffab-4ec7-bffb-577b4b3445fe/bin/uautomizer/../../sv-benchmarks/c/float-newlib/double_req_bl_0662a.c [2019-11-15 22:54:15,934 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_f0e88737-ffab-4ec7-bffb-577b4b3445fe/bin/uautomizer/data/7eb5ded62/89c1a97944c449c89714258a10340baf/FLAGf0a61e75e [2019-11-15 22:54:16,307 INFO L306 CDTParser]: Found 1 translation units. [2019-11-15 22:54:16,309 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_f0e88737-ffab-4ec7-bffb-577b4b3445fe/sv-benchmarks/c/float-newlib/double_req_bl_0662a.c [2019-11-15 22:54:16,322 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_f0e88737-ffab-4ec7-bffb-577b4b3445fe/bin/uautomizer/data/7eb5ded62/89c1a97944c449c89714258a10340baf/FLAGf0a61e75e [2019-11-15 22:54:16,655 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_f0e88737-ffab-4ec7-bffb-577b4b3445fe/bin/uautomizer/data/7eb5ded62/89c1a97944c449c89714258a10340baf [2019-11-15 22:54:16,657 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-15 22:54:16,658 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-15 22:54:16,659 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-15 22:54:16,659 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-15 22:54:16,663 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-15 22:54:16,663 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.11 10:54:16" (1/1) ... [2019-11-15 22:54:16,666 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4905a49c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:54:16, skipping insertion in model container [2019-11-15 22:54:16,666 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.11 10:54:16" (1/1) ... [2019-11-15 22:54:16,673 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-15 22:54:16,705 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-15 22:54:16,904 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-15 22:54:16,913 INFO L188 MainTranslator]: Completed pre-run [2019-11-15 22:54:17,051 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-15 22:54:17,081 INFO L192 MainTranslator]: Completed translation [2019-11-15 22:54:17,081 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:54:17 WrapperNode [2019-11-15 22:54:17,081 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-15 22:54:17,082 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-15 22:54:17,082 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-15 22:54:17,083 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-15 22:54:17,093 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:54:17" (1/1) ... [2019-11-15 22:54:17,113 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:54:17" (1/1) ... [2019-11-15 22:54:17,158 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-15 22:54:17,158 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-15 22:54:17,159 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-15 22:54:17,159 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-15 22:54:17,168 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:54:17" (1/1) ... [2019-11-15 22:54:17,168 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:54:17" (1/1) ... [2019-11-15 22:54:17,181 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:54:17" (1/1) ... [2019-11-15 22:54:17,181 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:54:17" (1/1) ... [2019-11-15 22:54:17,207 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:54:17" (1/1) ... [2019-11-15 22:54:17,216 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:54:17" (1/1) ... [2019-11-15 22:54:17,222 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:54:17" (1/1) ... [2019-11-15 22:54:17,229 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-15 22:54:17,229 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-15 22:54:17,229 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-15 22:54:17,230 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-15 22:54:17,231 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:54:17" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f0e88737-ffab-4ec7-bffb-577b4b3445fe/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 22:54:17,291 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2019-11-15 22:54:17,291 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2019-11-15 22:54:17,291 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-15 22:54:17,291 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8 [2019-11-15 22:54:17,292 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2019-11-15 22:54:17,292 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-15 22:54:17,292 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-15 22:54:17,292 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2019-11-15 22:54:17,292 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-15 22:54:54,497 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-15 22:54:54,498 INFO L284 CfgBuilder]: Removed 44 assume(true) statements. [2019-11-15 22:54:54,499 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 10:54:54 BoogieIcfgContainer [2019-11-15 22:54:54,499 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-15 22:54:54,500 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-15 22:54:54,500 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-15 22:54:54,502 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-15 22:54:54,502 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.11 10:54:16" (1/3) ... [2019-11-15 22:54:54,503 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7865ba9b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.11 10:54:54, skipping insertion in model container [2019-11-15 22:54:54,503 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:54:17" (2/3) ... [2019-11-15 22:54:54,503 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7865ba9b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.11 10:54:54, skipping insertion in model container [2019-11-15 22:54:54,503 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 10:54:54" (3/3) ... [2019-11-15 22:54:54,504 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_0662a.c [2019-11-15 22:54:54,517 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-15 22:54:54,523 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-15 22:54:54,530 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-15 22:54:54,554 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-15 22:54:54,554 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-15 22:54:54,554 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-15 22:54:54,555 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-15 22:54:54,555 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-15 22:54:54,555 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-15 22:54:54,555 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-15 22:54:54,556 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-15 22:54:54,573 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states. [2019-11-15 22:54:54,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-15 22:54:54,584 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 22:54:54,585 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 22:54:54,586 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 22:54:54,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 22:54:54,591 INFO L82 PathProgramCache]: Analyzing trace with hash 1059427896, now seen corresponding path program 1 times [2019-11-15 22:54:54,599 INFO L157 tionRefinementEngine]: Executing refinement strategy WOLF [2019-11-15 22:54:54,599 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [56419673] [2019-11-15 22:54:54,599 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f0e88737-ffab-4ec7-bffb-577b4b3445fe/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 22:54:54,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:54:54,917 INFO L256 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 1 conjunts are in the unsatisfiable core [2019-11-15 22:54:54,921 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 22:54:54,933 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 22:54:54,933 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-15 22:54:54,936 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 22:54:54,946 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [56419673] [2019-11-15 22:54:54,946 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-15 22:54:54,947 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2019-11-15 22:54:54,947 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472722383] [2019-11-15 22:54:54,951 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-15 22:54:54,951 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-15 22:54:54,964 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-15 22:54:54,965 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-15 22:54:54,967 INFO L87 Difference]: Start difference. First operand 115 states. Second operand 2 states. [2019-11-15 22:54:54,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 22:54:54,993 INFO L93 Difference]: Finished difference Result 227 states and 382 transitions. [2019-11-15 22:54:54,993 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-15 22:54:54,994 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2019-11-15 22:54:54,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 22:54:55,006 INFO L225 Difference]: With dead ends: 227 [2019-11-15 22:54:55,010 INFO L226 Difference]: Without dead ends: 111 [2019-11-15 22:54:55,013 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-15 22:54:55,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2019-11-15 22:54:55,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 111. [2019-11-15 22:54:55,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2019-11-15 22:54:55,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 159 transitions. [2019-11-15 22:54:55,050 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 159 transitions. Word has length 11 [2019-11-15 22:54:55,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 22:54:55,051 INFO L462 AbstractCegarLoop]: Abstraction has 111 states and 159 transitions. [2019-11-15 22:54:55,051 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-15 22:54:55,051 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 159 transitions. [2019-11-15 22:54:55,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-11-15 22:54:55,052 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 22:54:55,052 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 22:54:55,254 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2019-11-15 22:54:55,254 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 22:54:55,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 22:54:55,255 INFO L82 PathProgramCache]: Analyzing trace with hash -7417919, now seen corresponding path program 1 times [2019-11-15 22:54:55,255 INFO L157 tionRefinementEngine]: Executing refinement strategy WOLF [2019-11-15 22:54:55,255 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1056522191] [2019-11-15 22:54:55,256 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f0e88737-ffab-4ec7-bffb-577b4b3445fe/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 22:54:55,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:54:55,709 INFO L256 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 18 conjunts are in the unsatisfiable core [2019-11-15 22:54:55,712 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 22:54:55,899 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 31 [2019-11-15 22:54:55,928 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 27 [2019-11-15 22:54:55,929 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-15 22:54:55,951 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-15 22:54:55,965 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-15 22:54:55,966 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 12 [2019-11-15 22:54:55,966 INFO L496 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2019-11-15 22:54:55,972 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-15 22:54:55,973 INFO L496 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-15 22:54:56,000 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-15 22:54:56,001 INFO L496 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2019-11-15 22:54:56,002 INFO L221 ElimStorePlain]: Needed 4 recursive calls to eliminate 5 variables, input treesize:62, output treesize:34 [2019-11-15 22:54:58,052 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 22:54:58,052 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-15 22:54:58,231 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-15 22:54:58,304 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-15 22:54:58,305 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 63 treesize of output 61 [2019-11-15 22:54:58,358 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-15 22:54:58,358 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 4 case distinctions, treesize of input 39 treesize of output 41 [2019-11-15 22:54:58,359 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-15 22:54:58,393 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-15 22:54:58,415 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 25 [2019-11-15 22:54:58,416 INFO L496 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2019-11-15 22:54:58,430 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-15 22:54:58,430 INFO L496 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-15 22:54:58,456 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-15 22:54:58,457 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 44 treesize of output 44 [2019-11-15 22:54:58,478 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-15 22:54:58,478 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 11 [2019-11-15 22:54:58,479 INFO L496 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2019-11-15 22:54:58,498 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-15 22:54:58,499 INFO L496 ElimStorePlain]: Start of recursive call 5: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-15 22:54:58,558 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-15 22:54:58,559 INFO L496 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-2 vars, End of recursive call: 3 dim-0 vars, and 2 xjuncts. [2019-11-15 22:54:58,560 INFO L221 ElimStorePlain]: Needed 6 recursive calls to eliminate 5 variables, input treesize:108, output treesize:50 [2019-11-15 22:54:58,813 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-15 22:54:58,958 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-15 22:54:59,040 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 22:54:59,041 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1056522191] [2019-11-15 22:54:59,041 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-15 22:54:59,041 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 14 [2019-11-15 22:54:59,041 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535116497] [2019-11-15 22:54:59,043 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-11-15 22:54:59,043 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-15 22:54:59,043 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-11-15 22:54:59,044 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2019-11-15 22:54:59,044 INFO L87 Difference]: Start difference. First operand 111 states and 159 transitions. Second operand 14 states. [2019-11-15 22:54:59,833 WARN L191 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 45 [2019-11-15 22:55:01,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 22:55:01,514 INFO L93 Difference]: Finished difference Result 167 states and 236 transitions. [2019-11-15 22:55:01,874 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-15 22:55:01,875 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 13 [2019-11-15 22:55:01,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 22:55:01,876 INFO L225 Difference]: With dead ends: 167 [2019-11-15 22:55:01,876 INFO L226 Difference]: Without dead ends: 68 [2019-11-15 22:55:01,878 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=91, Invalid=251, Unknown=0, NotChecked=0, Total=342 [2019-11-15 22:55:01,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2019-11-15 22:55:01,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2019-11-15 22:55:01,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2019-11-15 22:55:01,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 86 transitions. [2019-11-15 22:55:01,889 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 86 transitions. Word has length 13 [2019-11-15 22:55:01,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 22:55:01,890 INFO L462 AbstractCegarLoop]: Abstraction has 68 states and 86 transitions. [2019-11-15 22:55:01,890 INFO L463 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-11-15 22:55:01,890 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 86 transitions. [2019-11-15 22:55:01,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-11-15 22:55:01,891 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 22:55:01,891 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 22:55:02,108 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2019-11-15 22:55:02,108 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 22:55:02,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 22:55:02,109 INFO L82 PathProgramCache]: Analyzing trace with hash 1226339013, now seen corresponding path program 1 times [2019-11-15 22:55:02,109 INFO L157 tionRefinementEngine]: Executing refinement strategy WOLF [2019-11-15 22:55:02,110 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [609906502] [2019-11-15 22:55:02,110 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f0e88737-ffab-4ec7-bffb-577b4b3445fe/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 22:55:02,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:55:02,418 INFO L256 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-15 22:55:02,420 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 22:55:02,670 WARN L191 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2019-11-15 22:55:02,890 WARN L191 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2019-11-15 22:55:03,066 WARN L191 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2019-11-15 22:55:03,077 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 22:55:03,077 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-15 22:55:04,998 WARN L191 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 6 [2019-11-15 22:55:05,001 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 22:55:05,001 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [609906502] [2019-11-15 22:55:05,001 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-15 22:55:05,002 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2019-11-15 22:55:05,002 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084897046] [2019-11-15 22:55:05,002 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-15 22:55:05,002 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-15 22:55:05,003 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-15 22:55:05,003 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2019-11-15 22:55:05,003 INFO L87 Difference]: Start difference. First operand 68 states and 86 transitions. Second operand 10 states. [2019-11-15 22:55:05,611 WARN L191 SmtUtils]: Spent 293.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2019-11-15 22:55:05,877 WARN L191 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2019-11-15 22:55:07,123 WARN L191 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2019-11-15 22:55:08,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 22:55:08,718 INFO L93 Difference]: Finished difference Result 72 states and 89 transitions. [2019-11-15 22:55:08,722 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-15 22:55:08,723 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 18 [2019-11-15 22:55:08,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 22:55:08,725 INFO L225 Difference]: With dead ends: 72 [2019-11-15 22:55:08,726 INFO L226 Difference]: Without dead ends: 66 [2019-11-15 22:55:08,727 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2019-11-15 22:55:08,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2019-11-15 22:55:08,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2019-11-15 22:55:08,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2019-11-15 22:55:08,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 83 transitions. [2019-11-15 22:55:08,740 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 83 transitions. Word has length 18 [2019-11-15 22:55:08,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 22:55:08,741 INFO L462 AbstractCegarLoop]: Abstraction has 66 states and 83 transitions. [2019-11-15 22:55:08,741 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-11-15 22:55:08,742 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 83 transitions. [2019-11-15 22:55:08,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-11-15 22:55:08,743 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 22:55:08,744 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] [2019-11-15 22:55:08,958 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2019-11-15 22:55:08,958 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 22:55:08,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 22:55:08,958 INFO L82 PathProgramCache]: Analyzing trace with hash 48409528, now seen corresponding path program 1 times [2019-11-15 22:55:08,959 INFO L157 tionRefinementEngine]: Executing refinement strategy WOLF [2019-11-15 22:55:08,959 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [701642489] [2019-11-15 22:55:08,959 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f0e88737-ffab-4ec7-bffb-577b4b3445fe/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 22:55:09,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:55:09,268 INFO L256 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-15 22:55:09,272 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 22:55:09,712 WARN L191 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2019-11-15 22:55:09,850 WARN L191 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2019-11-15 22:55:10,043 WARN L191 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2019-11-15 22:55:10,047 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 22:55:10,047 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-15 22:55:12,808 WARN L191 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 6 [2019-11-15 22:55:12,811 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 22:55:12,811 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [701642489] [2019-11-15 22:55:12,812 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-15 22:55:12,812 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2019-11-15 22:55:12,812 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679280671] [2019-11-15 22:55:12,812 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-15 22:55:12,812 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-15 22:55:12,813 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-15 22:55:12,813 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2019-11-15 22:55:12,813 INFO L87 Difference]: Start difference. First operand 66 states and 83 transitions. Second operand 10 states. [2019-11-15 22:55:13,562 WARN L191 SmtUtils]: Spent 301.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2019-11-15 22:55:14,684 WARN L191 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2019-11-15 22:55:15,256 WARN L191 SmtUtils]: Spent 372.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2019-11-15 22:55:16,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 22:55:16,588 INFO L93 Difference]: Finished difference Result 70 states and 86 transitions. [2019-11-15 22:55:16,590 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-15 22:55:16,590 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 20 [2019-11-15 22:55:16,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 22:55:16,591 INFO L225 Difference]: With dead ends: 70 [2019-11-15 22:55:16,591 INFO L226 Difference]: Without dead ends: 64 [2019-11-15 22:55:16,592 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 29 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2019-11-15 22:55:16,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2019-11-15 22:55:16,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2019-11-15 22:55:16,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2019-11-15 22:55:16,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 80 transitions. [2019-11-15 22:55:16,599 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 80 transitions. Word has length 20 [2019-11-15 22:55:16,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 22:55:16,600 INFO L462 AbstractCegarLoop]: Abstraction has 64 states and 80 transitions. [2019-11-15 22:55:16,600 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-11-15 22:55:16,600 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 80 transitions. [2019-11-15 22:55:16,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2019-11-15 22:55:16,601 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 22:55:16,601 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] [2019-11-15 22:55:16,810 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2019-11-15 22:55:16,810 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 22:55:16,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 22:55:16,810 INFO L82 PathProgramCache]: Analyzing trace with hash 1297758981, now seen corresponding path program 1 times [2019-11-15 22:55:16,811 INFO L157 tionRefinementEngine]: Executing refinement strategy WOLF [2019-11-15 22:55:16,811 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1860420148] [2019-11-15 22:55:16,811 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f0e88737-ffab-4ec7-bffb-577b4b3445fe/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 22:55:17,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:55:17,198 INFO L256 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 9 conjunts are in the unsatisfiable core [2019-11-15 22:55:17,201 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 22:55:17,280 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-15 22:55:17,301 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 22:55:17,301 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-15 22:55:17,302 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-15 22:55:17,498 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 22:55:17,498 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1860420148] [2019-11-15 22:55:17,498 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-15 22:55:17,498 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 11 [2019-11-15 22:55:17,499 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741543283] [2019-11-15 22:55:17,499 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-11-15 22:55:17,499 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-15 22:55:17,499 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-11-15 22:55:17,500 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2019-11-15 22:55:17,500 INFO L87 Difference]: Start difference. First operand 64 states and 80 transitions. Second operand 11 states. [2019-11-15 22:55:20,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 22:55:20,693 INFO L93 Difference]: Finished difference Result 68 states and 83 transitions. [2019-11-15 22:55:20,694 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-15 22:55:20,695 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 21 [2019-11-15 22:55:20,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 22:55:20,696 INFO L225 Difference]: With dead ends: 68 [2019-11-15 22:55:20,696 INFO L226 Difference]: Without dead ends: 59 [2019-11-15 22:55:20,696 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2019-11-15 22:55:20,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2019-11-15 22:55:20,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2019-11-15 22:55:20,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2019-11-15 22:55:20,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 73 transitions. [2019-11-15 22:55:20,709 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 73 transitions. Word has length 21 [2019-11-15 22:55:20,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 22:55:20,710 INFO L462 AbstractCegarLoop]: Abstraction has 59 states and 73 transitions. [2019-11-15 22:55:20,710 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-11-15 22:55:20,710 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 73 transitions. [2019-11-15 22:55:20,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2019-11-15 22:55:20,712 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 22:55:20,712 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, 1] [2019-11-15 22:55:20,930 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2019-11-15 22:55:20,930 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 22:55:20,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 22:55:20,930 INFO L82 PathProgramCache]: Analyzing trace with hash 1649788032, now seen corresponding path program 1 times [2019-11-15 22:55:20,931 INFO L157 tionRefinementEngine]: Executing refinement strategy WOLF [2019-11-15 22:55:20,932 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [545625735] [2019-11-15 22:55:20,932 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f0e88737-ffab-4ec7-bffb-577b4b3445fe/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 22:55:21,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:55:21,610 INFO L256 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 20 conjunts are in the unsatisfiable core [2019-11-15 22:55:21,612 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 22:55:23,047 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 22:55:23,047 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-15 22:55:23,048 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-15 22:55:23,083 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-15 22:55:23,084 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-15 22:55:23,085 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-15 22:55:23,150 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-15 22:55:23,150 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-15 22:55:23,153 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-15 22:55:23,618 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-15 22:55:24,359 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-15 22:55:24,782 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-15 22:55:25,134 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 22:55:25,134 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [545625735] [2019-11-15 22:55:25,135 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-15 22:55:25,135 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [11, 13] imperfect sequences [] total 21 [2019-11-15 22:55:25,135 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468091871] [2019-11-15 22:55:25,135 INFO L442 AbstractCegarLoop]: Interpolant automaton has 21 states [2019-11-15 22:55:25,135 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-15 22:55:25,136 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2019-11-15 22:55:25,136 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=355, Unknown=0, NotChecked=0, Total=420 [2019-11-15 22:55:25,136 INFO L87 Difference]: Start difference. First operand 59 states and 73 transitions. Second operand 21 states. [2019-11-15 22:55:26,142 WARN L191 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 52 [2019-11-15 22:55:28,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 22:55:28,820 INFO L93 Difference]: Finished difference Result 63 states and 76 transitions. [2019-11-15 22:55:28,822 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-15 22:55:28,822 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 23 [2019-11-15 22:55:28,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 22:55:28,823 INFO L225 Difference]: With dead ends: 63 [2019-11-15 22:55:28,823 INFO L226 Difference]: Without dead ends: 59 [2019-11-15 22:55:28,824 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 21 SyntacticMatches, 4 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 143 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=157, Invalid=545, Unknown=0, NotChecked=0, Total=702 [2019-11-15 22:55:28,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2019-11-15 22:55:28,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2019-11-15 22:55:28,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2019-11-15 22:55:28,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 72 transitions. [2019-11-15 22:55:28,831 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 72 transitions. Word has length 23 [2019-11-15 22:55:28,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 22:55:28,832 INFO L462 AbstractCegarLoop]: Abstraction has 59 states and 72 transitions. [2019-11-15 22:55:28,832 INFO L463 AbstractCegarLoop]: Interpolant automaton has 21 states. [2019-11-15 22:55:28,832 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 72 transitions. [2019-11-15 22:55:28,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2019-11-15 22:55:28,833 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 22:55:28,833 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, 1, 1] [2019-11-15 22:55:29,033 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 mathsat -unsat_core_generation=3 [2019-11-15 22:55:29,035 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 22:55:29,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 22:55:29,035 INFO L82 PathProgramCache]: Analyzing trace with hash -394512707, now seen corresponding path program 1 times [2019-11-15 22:55:29,035 INFO L157 tionRefinementEngine]: Executing refinement strategy WOLF [2019-11-15 22:55:29,035 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1266356143] [2019-11-15 22:55:29,035 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f0e88737-ffab-4ec7-bffb-577b4b3445fe/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 22:55:29,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:55:29,644 INFO L256 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 12 conjunts are in the unsatisfiable core [2019-11-15 22:55:29,647 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 22:55:29,866 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 mathsat -unsat_core_generation=3 [2019-11-15 22:55:29,866 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.NullPointerException at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.arrays.ArrayOccurrenceAnalysis$ArrOccFinder$MyWalker.walk(ArrayOccurrenceAnalysis.java:277) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive$TermWalker.walk(NonRecursive.java:139) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.arrays.ArrayOccurrenceAnalysis$ArrOccFinder$MyWalker.walk(ArrayOccurrenceAnalysis.java:195) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:115) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:106) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.arrays.ArrayOccurrenceAnalysis$ArrOccFinder.(ArrayOccurrenceAnalysis.java:181) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.arrays.ArrayOccurrenceAnalysis.(ArrayOccurrenceAnalysis.java:83) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.arrays.ArrayOccurrenceAnalysis.downgradeDimensionsIfNecessary(ArrayOccurrenceAnalysis.java:171) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.arrays.ArrayIndexBasedCostEstimation.computeCostEstimation(ArrayIndexBasedCostEstimation.java:132) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.arrays.ArrayIndexBasedCostEstimation.(ArrayIndexBasedCostEstimation.java:64) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.computeCostEstimation(ElimStorePlain.java:519) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.doElimAllRec(ElimStorePlain.java:390) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.startRecursiveElimination(ElimStorePlain.java:216) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.PartialQuantifierElimination.elim(PartialQuantifierElimination.java:306) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.PartialQuantifierElimination.tryToEliminate(PartialQuantifierElimination.java:102) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.IterativePredicateTransformer$QuantifierEliminationPostprocessor.postprocess(IterativePredicateTransformer.java:245) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:439) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.IterativePredicateTransformer.computeStrongestPostconditionSequence(IterativePredicateTransformer.java:200) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:292) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:162) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:57) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.checkFeasibility(TraceAbstractionRefinementEngine.java:244) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.executeStrategy(TraceAbstractionRefinementEngine.java:160) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.RefinementEngineFactory.runRefinementEngine(RefinementEngineFactory.java:124) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:419) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:368) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:332) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:170) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:122) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:120) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2019-11-15 22:55:29,870 INFO L168 Benchmark]: Toolchain (without parser) took 73211.53 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 213.4 MB). Free memory was 952.3 MB in the beginning and 892.3 MB in the end (delta: 60.0 MB). Peak memory consumption was 273.4 MB. Max. memory is 11.5 GB. [2019-11-15 22:55:29,870 INFO L168 Benchmark]: CDTParser took 0.24 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 22:55:29,871 INFO L168 Benchmark]: CACSL2BoogieTranslator took 422.80 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 154.7 MB). Free memory was 952.3 MB in the beginning and 1.1 GB in the end (delta: -189.9 MB). Peak memory consumption was 28.8 MB. Max. memory is 11.5 GB. [2019-11-15 22:55:29,871 INFO L168 Benchmark]: Boogie Procedure Inliner took 75.89 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.5 MB). Peak memory consumption was 6.5 MB. Max. memory is 11.5 GB. [2019-11-15 22:55:29,872 INFO L168 Benchmark]: Boogie Preprocessor took 70.52 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.5 MB). Peak memory consumption was 6.5 MB. Max. memory is 11.5 GB. [2019-11-15 22:55:29,872 INFO L168 Benchmark]: RCFGBuilder took 37269.88 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 63.9 MB). Peak memory consumption was 63.9 MB. Max. memory is 11.5 GB. [2019-11-15 22:55:29,873 INFO L168 Benchmark]: TraceAbstraction took 35368.66 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 58.7 MB). Free memory was 1.1 GB in the beginning and 892.3 MB in the end (delta: 173.0 MB). Peak memory consumption was 231.7 MB. Max. memory is 11.5 GB. [2019-11-15 22:55:29,876 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 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 422.80 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 154.7 MB). Free memory was 952.3 MB in the beginning and 1.1 GB in the end (delta: -189.9 MB). Peak memory consumption was 28.8 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 75.89 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.5 MB). Peak memory consumption was 6.5 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 70.52 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.5 MB). Peak memory consumption was 6.5 MB. Max. memory is 11.5 GB. * RCFGBuilder took 37269.88 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 63.9 MB). Peak memory consumption was 63.9 MB. Max. memory is 11.5 GB. * TraceAbstraction took 35368.66 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 58.7 MB). Free memory was 1.1 GB in the beginning and 892.3 MB in the end (delta: 173.0 MB). Peak memory consumption was 231.7 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: NullPointerException: null de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: NullPointerException: null: de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.arrays.ArrayOccurrenceAnalysis$ArrOccFinder$MyWalker.walk(ArrayOccurrenceAnalysis.java:277) RESULT: Ultimate could not prove your program: Toolchain returned no result. [MP z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forcibly destroying the process Received shutdown request...