./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/double_req_bl_1252b.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b5699aa Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_e56ae15d-e41c-4f8f-8c89-f9a2207ad7ce/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_e56ae15d-e41c-4f8f-8c89-f9a2207ad7ce/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_e56ae15d-e41c-4f8f-8c89-f9a2207ad7ce/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_e56ae15d-e41c-4f8f-8c89-f9a2207ad7ce/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1252b.c -s /tmp/vcloud-vcloud-master/worker/run_dir_e56ae15d-e41c-4f8f-8c89-f9a2207ad7ce/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_e56ae15d-e41c-4f8f-8c89-f9a2207ad7ce/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 6f57b560c2271100a3cc213cf38aa06905e4b86e ............................................................................................................................................................................................................................................................................................................................................................. 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_e56ae15d-e41c-4f8f-8c89-f9a2207ad7ce/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_e56ae15d-e41c-4f8f-8c89-f9a2207ad7ce/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_e56ae15d-e41c-4f8f-8c89-f9a2207ad7ce/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_e56ae15d-e41c-4f8f-8c89-f9a2207ad7ce/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1252b.c -s /tmp/vcloud-vcloud-master/worker/run_dir_e56ae15d-e41c-4f8f-8c89-f9a2207ad7ce/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_e56ae15d-e41c-4f8f-8c89-f9a2207ad7ce/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 6f57b560c2271100a3cc213cf38aa06905e4b86e ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.1.24-6b5699a [2019-11-25 08:54:37,613 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-25 08:54:37,615 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-25 08:54:37,631 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-25 08:54:37,631 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-25 08:54:37,633 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-25 08:54:37,635 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-25 08:54:37,643 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-25 08:54:37,648 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-25 08:54:37,652 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-25 08:54:37,653 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-25 08:54:37,654 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-25 08:54:37,655 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-25 08:54:37,657 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-25 08:54:37,659 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-25 08:54:37,660 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-25 08:54:37,661 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-25 08:54:37,662 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-25 08:54:37,664 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-25 08:54:37,668 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-25 08:54:37,672 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-25 08:54:37,675 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-25 08:54:37,677 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-25 08:54:37,678 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-25 08:54:37,680 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-25 08:54:37,680 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-25 08:54:37,680 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-25 08:54:37,682 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-25 08:54:37,682 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-25 08:54:37,684 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-25 08:54:37,684 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-25 08:54:37,685 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-25 08:54:37,686 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-25 08:54:37,687 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-25 08:54:37,687 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-25 08:54:37,688 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-25 08:54:37,688 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-25 08:54:37,689 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-25 08:54:37,689 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-25 08:54:37,689 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-25 08:54:37,691 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-25 08:54:37,691 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_e56ae15d-e41c-4f8f-8c89-f9a2207ad7ce/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-25 08:54:37,715 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-25 08:54:37,724 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-25 08:54:37,725 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-25 08:54:37,726 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-25 08:54:37,726 INFO L138 SettingsManager]: * Use SBE=true [2019-11-25 08:54:37,726 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-25 08:54:37,726 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-25 08:54:37,727 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-25 08:54:37,727 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-25 08:54:37,727 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-25 08:54:37,727 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-25 08:54:37,727 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-25 08:54:37,728 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-25 08:54:37,728 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-25 08:54:37,729 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-25 08:54:37,729 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-25 08:54:37,729 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-25 08:54:37,729 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-25 08:54:37,730 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-25 08:54:37,730 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-25 08:54:37,730 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-25 08:54:37,730 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-25 08:54:37,730 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-25 08:54:37,731 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-25 08:54:37,731 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-25 08:54:37,731 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-25 08:54:37,732 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-25 08:54:37,732 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-25 08:54:37,732 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_e56ae15d-e41c-4f8f-8c89-f9a2207ad7ce/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 -> 6f57b560c2271100a3cc213cf38aa06905e4b86e [2019-11-25 08:54:37,906 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-25 08:54:37,919 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-25 08:54:37,921 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-25 08:54:37,922 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-25 08:54:37,923 INFO L275 PluginConnector]: CDTParser initialized [2019-11-25 08:54:37,923 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_e56ae15d-e41c-4f8f-8c89-f9a2207ad7ce/bin/uautomizer/../../sv-benchmarks/c/float-newlib/double_req_bl_1252b.c [2019-11-25 08:54:37,975 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_e56ae15d-e41c-4f8f-8c89-f9a2207ad7ce/bin/uautomizer/data/e0ce7e0c6/4f0c1993ae3d45f383f7fe606fb71706/FLAGd8b35e8d3 [2019-11-25 08:54:38,327 INFO L306 CDTParser]: Found 1 translation units. [2019-11-25 08:54:38,328 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_e56ae15d-e41c-4f8f-8c89-f9a2207ad7ce/sv-benchmarks/c/float-newlib/double_req_bl_1252b.c [2019-11-25 08:54:38,333 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_e56ae15d-e41c-4f8f-8c89-f9a2207ad7ce/bin/uautomizer/data/e0ce7e0c6/4f0c1993ae3d45f383f7fe606fb71706/FLAGd8b35e8d3 [2019-11-25 08:54:38,701 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_e56ae15d-e41c-4f8f-8c89-f9a2207ad7ce/bin/uautomizer/data/e0ce7e0c6/4f0c1993ae3d45f383f7fe606fb71706 [2019-11-25 08:54:38,703 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-25 08:54:38,705 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-25 08:54:38,705 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-25 08:54:38,706 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-25 08:54:38,709 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-25 08:54:38,710 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:54:38" (1/1) ... [2019-11-25 08:54:38,712 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@10d17872 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:54:38, skipping insertion in model container [2019-11-25 08:54:38,712 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:54:38" (1/1) ... [2019-11-25 08:54:38,719 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-25 08:54:38,735 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-25 08:54:38,886 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-25 08:54:38,889 INFO L201 MainTranslator]: Completed pre-run [2019-11-25 08:54:38,985 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-25 08:54:39,005 INFO L205 MainTranslator]: Completed translation [2019-11-25 08:54:39,006 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:54:39 WrapperNode [2019-11-25 08:54:39,006 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-25 08:54:39,007 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-25 08:54:39,007 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-25 08:54:39,007 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-25 08:54:39,015 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:54:39" (1/1) ... [2019-11-25 08:54:39,024 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:54:39" (1/1) ... [2019-11-25 08:54:39,057 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-25 08:54:39,057 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-25 08:54:39,057 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-25 08:54:39,058 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-25 08:54:39,071 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:54:39" (1/1) ... [2019-11-25 08:54:39,071 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:54:39" (1/1) ... [2019-11-25 08:54:39,080 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:54:39" (1/1) ... [2019-11-25 08:54:39,081 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:54:39" (1/1) ... [2019-11-25 08:54:39,093 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:54:39" (1/1) ... [2019-11-25 08:54:39,103 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:54:39" (1/1) ... [2019-11-25 08:54:39,105 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:54:39" (1/1) ... [2019-11-25 08:54:39,108 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-25 08:54:39,108 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-25 08:54:39,108 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-25 08:54:39,109 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-25 08:54:39,109 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:54:39" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e56ae15d-e41c-4f8f-8c89-f9a2207ad7ce/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 [2019-11-25 08:54:39,172 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-25 08:54:39,172 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2019-11-25 08:54:39,172 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-25 08:54:39,172 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-25 08:54:39,172 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-25 08:54:39,172 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-25 08:54:39,503 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-25 08:54:39,503 INFO L284 CfgBuilder]: Removed 18 assume(true) statements. [2019-11-25 08:54:39,505 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:54:39 BoogieIcfgContainer [2019-11-25 08:54:39,505 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-25 08:54:39,506 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-25 08:54:39,506 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-25 08:54:39,510 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-25 08:54:39,510 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 08:54:38" (1/3) ... [2019-11-25 08:54:39,511 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28a941c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 08:54:39, skipping insertion in model container [2019-11-25 08:54:39,516 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:54:39" (2/3) ... [2019-11-25 08:54:39,517 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28a941c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 08:54:39, skipping insertion in model container [2019-11-25 08:54:39,517 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:54:39" (3/3) ... [2019-11-25 08:54:39,519 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1252b.c [2019-11-25 08:54:39,539 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-25 08:54:39,549 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-25 08:54:39,560 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-25 08:54:39,582 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-25 08:54:39,583 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-25 08:54:39,583 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-25 08:54:39,583 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-25 08:54:39,583 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-25 08:54:39,583 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-25 08:54:39,584 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-25 08:54:39,584 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-25 08:54:39,598 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2019-11-25 08:54:39,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-25 08:54:39,604 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:54:39,604 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:54:39,605 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:54:39,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:54:39,611 INFO L82 PathProgramCache]: Analyzing trace with hash -958075201, now seen corresponding path program 1 times [2019-11-25 08:54:39,617 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:54:39,618 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1437278395] [2019-11-25 08:54:39,618 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:54:39,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:54:39,712 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:54:39,712 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1437278395] [2019-11-25 08:54:39,713 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:54:39,714 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-25 08:54:39,714 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379157818] [2019-11-25 08:54:39,719 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-25 08:54:39,719 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:54:39,731 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-25 08:54:39,732 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-25 08:54:39,734 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 2 states. [2019-11-25 08:54:39,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:54:39,751 INFO L93 Difference]: Finished difference Result 62 states and 98 transitions. [2019-11-25 08:54:39,752 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-25 08:54:39,753 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2019-11-25 08:54:39,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:54:39,762 INFO L225 Difference]: With dead ends: 62 [2019-11-25 08:54:39,762 INFO L226 Difference]: Without dead ends: 29 [2019-11-25 08:54:39,764 INFO L630 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 [2019-11-25 08:54:39,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2019-11-25 08:54:39,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2019-11-25 08:54:39,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2019-11-25 08:54:39,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 40 transitions. [2019-11-25 08:54:39,796 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 40 transitions. Word has length 10 [2019-11-25 08:54:39,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:54:39,797 INFO L462 AbstractCegarLoop]: Abstraction has 29 states and 40 transitions. [2019-11-25 08:54:39,797 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-25 08:54:39,797 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 40 transitions. [2019-11-25 08:54:39,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-25 08:54:39,798 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:54:39,798 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:54:39,798 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:54:39,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:54:39,799 INFO L82 PathProgramCache]: Analyzing trace with hash 1001584898, now seen corresponding path program 1 times [2019-11-25 08:54:39,799 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:54:39,800 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398403046] [2019-11-25 08:54:39,801 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:54:39,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:54:39,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:54:39,884 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [398403046] [2019-11-25 08:54:39,884 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:54:39,884 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-25 08:54:39,885 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759045021] [2019-11-25 08:54:39,886 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-25 08:54:39,886 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:54:39,886 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-25 08:54:39,887 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-25 08:54:39,887 INFO L87 Difference]: Start difference. First operand 29 states and 40 transitions. Second operand 4 states. [2019-11-25 08:54:39,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:54:39,973 INFO L93 Difference]: Finished difference Result 53 states and 67 transitions. [2019-11-25 08:54:39,976 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-25 08:54:39,976 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2019-11-25 08:54:39,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:54:39,977 INFO L225 Difference]: With dead ends: 53 [2019-11-25 08:54:39,977 INFO L226 Difference]: Without dead ends: 44 [2019-11-25 08:54:39,978 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-25 08:54:39,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2019-11-25 08:54:39,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 31. [2019-11-25 08:54:39,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2019-11-25 08:54:39,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 42 transitions. [2019-11-25 08:54:39,987 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 42 transitions. Word has length 11 [2019-11-25 08:54:39,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:54:39,987 INFO L462 AbstractCegarLoop]: Abstraction has 31 states and 42 transitions. [2019-11-25 08:54:39,988 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-25 08:54:39,988 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 42 transitions. [2019-11-25 08:54:39,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-11-25 08:54:39,989 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:54:39,989 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:54:39,991 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:54:39,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:54:39,992 INFO L82 PathProgramCache]: Analyzing trace with hash -555760345, now seen corresponding path program 1 times [2019-11-25 08:54:39,992 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:54:39,992 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1052011026] [2019-11-25 08:54:39,993 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:54:40,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:54:40,074 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:54:40,075 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1052011026] [2019-11-25 08:54:40,075 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:54:40,075 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-25 08:54:40,075 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744927242] [2019-11-25 08:54:40,076 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-25 08:54:40,076 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:54:40,076 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-25 08:54:40,076 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-25 08:54:40,076 INFO L87 Difference]: Start difference. First operand 31 states and 42 transitions. Second operand 4 states. [2019-11-25 08:54:40,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:54:40,124 INFO L93 Difference]: Finished difference Result 55 states and 69 transitions. [2019-11-25 08:54:40,125 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-25 08:54:40,125 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2019-11-25 08:54:40,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:54:40,126 INFO L225 Difference]: With dead ends: 55 [2019-11-25 08:54:40,126 INFO L226 Difference]: Without dead ends: 46 [2019-11-25 08:54:40,127 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-25 08:54:40,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2019-11-25 08:54:40,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 31. [2019-11-25 08:54:40,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2019-11-25 08:54:40,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 42 transitions. [2019-11-25 08:54:40,133 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 42 transitions. Word has length 14 [2019-11-25 08:54:40,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:54:40,133 INFO L462 AbstractCegarLoop]: Abstraction has 31 states and 42 transitions. [2019-11-25 08:54:40,133 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-25 08:54:40,136 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 42 transitions. [2019-11-25 08:54:40,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-11-25 08:54:40,137 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:54:40,137 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:54:40,137 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:54:40,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:54:40,138 INFO L82 PathProgramCache]: Analyzing trace with hash 1219247017, now seen corresponding path program 1 times [2019-11-25 08:54:40,138 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:54:40,138 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1098220660] [2019-11-25 08:54:40,138 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:54:40,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:54:40,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:54:40,240 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:54:40,240 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-25 08:54:40,262 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 08:54:40 BoogieIcfgContainer [2019-11-25 08:54:40,262 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-25 08:54:40,263 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-25 08:54:40,263 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-25 08:54:40,263 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-25 08:54:40,263 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:54:39" (3/4) ... [2019-11-25 08:54:40,266 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-11-25 08:54:40,266 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-25 08:54:40,268 INFO L168 Benchmark]: Toolchain (without parser) took 1562.83 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 132.1 MB). Free memory was 950.1 MB in the beginning and 1.0 GB in the end (delta: -98.0 MB). Peak memory consumption was 34.1 MB. Max. memory is 11.5 GB. [2019-11-25 08:54:40,269 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-25 08:54:40,269 INFO L168 Benchmark]: CACSL2BoogieTranslator took 300.91 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 132.1 MB). Free memory was 950.1 MB in the beginning and 1.1 GB in the end (delta: -175.4 MB). Peak memory consumption was 23.3 MB. Max. memory is 11.5 GB. [2019-11-25 08:54:40,270 INFO L168 Benchmark]: Boogie Procedure Inliner took 50.30 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. [2019-11-25 08:54:40,270 INFO L168 Benchmark]: Boogie Preprocessor took 50.77 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. [2019-11-25 08:54:40,271 INFO L168 Benchmark]: RCFGBuilder took 396.86 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: 23.7 MB). Peak memory consumption was 23.7 MB. Max. memory is 11.5 GB. [2019-11-25 08:54:40,272 INFO L168 Benchmark]: TraceAbstraction took 756.16 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: 48.3 MB). Peak memory consumption was 48.3 MB. Max. memory is 11.5 GB. [2019-11-25 08:54:40,272 INFO L168 Benchmark]: Witness Printer took 3.39 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. [2019-11-25 08:54:40,276 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 300.91 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 132.1 MB). Free memory was 950.1 MB in the beginning and 1.1 GB in the end (delta: -175.4 MB). Peak memory consumption was 23.3 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 50.30 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. * Boogie Preprocessor took 50.77 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. * RCFGBuilder took 396.86 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: 23.7 MB). Peak memory consumption was 23.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 756.16 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: 48.3 MB). Peak memory consumption was 48.3 MB. Max. memory is 11.5 GB. * Witness Printer took 3.39 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: 85]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 84, overapproximation of someUnaryDOUBLEoperation at line 80. Possible FailurePath: [L79] double x = 0.0; [L80] double y = -0.0; [L24] __uint32_t msw, lsw; [L27] ieee_double_shape_type ew_u; [L28] ew_u.value = (x) [L29] EXPR ew_u.parts.msw [L29] (msw) = ew_u.parts.msw [L30] EXPR ew_u.parts.lsw [L30] (lsw) = ew_u.parts.lsw [L33-L34] COND FALSE !((msw == 0x00000000 && lsw == 0x00000000) || (msw == 0x80000000 && lsw == 0x00000000)) [L36-L37] COND FALSE !((msw >= 0x00100000 && msw <= 0x7fefffff) || (msw >= 0x80100000 && msw <= 0xffefffff)) [L39-L40] COND FALSE !(( msw <= 0x000fffff) || (msw >= 0x80000000 && msw <= 0x800fffff)) [L43-L44] COND FALSE !((msw == 0x7ff00000 && lsw == 0x00000000) || (msw == 0xfff00000 && lsw == 0x00000000)) [L47] return 0; [L52] COND TRUE __fpclassify_double(x) == 0 [L53] return y; [L81] double res = fmax_double(x, y); [L84] EXPR res == 0.0 && __signbit_double(res) == 0 [L84] COND TRUE !(res == 0.0 && __signbit_double(res) == 0) [L85] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 32 locations, 1 error locations. Result: UNSAFE, OverallTime: 0.6s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 135 SDtfs, 32 SDslu, 140 SDs, 0 SdLazy, 30 SolverSat, 12 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=32occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 28 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 49 NumberOfCodeBlocks, 49 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 32 ConstructedInterpolants, 0 QuantifiedInterpolants, 442 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.24-6b5699a [2019-11-25 08:54:42,051 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-25 08:54:42,053 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-25 08:54:42,067 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-25 08:54:42,067 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-25 08:54:42,069 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-25 08:54:42,072 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-25 08:54:42,081 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-25 08:54:42,086 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-25 08:54:42,090 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-25 08:54:42,091 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-25 08:54:42,092 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-25 08:54:42,093 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-25 08:54:42,095 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-25 08:54:42,097 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-25 08:54:42,098 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-25 08:54:42,100 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-25 08:54:42,101 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-25 08:54:42,103 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-25 08:54:42,107 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-25 08:54:42,110 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-25 08:54:42,114 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-25 08:54:42,115 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-25 08:54:42,117 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-25 08:54:42,120 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-25 08:54:42,120 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-25 08:54:42,121 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-25 08:54:42,122 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-25 08:54:42,123 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-25 08:54:42,125 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-25 08:54:42,125 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-25 08:54:42,126 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-25 08:54:42,127 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-25 08:54:42,128 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-25 08:54:42,129 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-25 08:54:42,129 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-25 08:54:42,130 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-25 08:54:42,130 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-25 08:54:42,130 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-25 08:54:42,131 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-25 08:54:42,133 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-25 08:54:42,133 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_e56ae15d-e41c-4f8f-8c89-f9a2207ad7ce/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2019-11-25 08:54:42,159 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-25 08:54:42,169 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-25 08:54:42,170 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-25 08:54:42,170 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-25 08:54:42,170 INFO L138 SettingsManager]: * Use SBE=true [2019-11-25 08:54:42,171 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-25 08:54:42,171 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-25 08:54:42,171 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-25 08:54:42,171 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-25 08:54:42,172 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-25 08:54:42,172 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-25 08:54:42,172 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-25 08:54:42,172 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-11-25 08:54:42,173 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-11-25 08:54:42,173 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-11-25 08:54:42,173 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-25 08:54:42,173 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-25 08:54:42,174 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-25 08:54:42,174 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-25 08:54:42,174 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-25 08:54:42,175 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-25 08:54:42,175 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-25 08:54:42,175 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-25 08:54:42,175 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-25 08:54:42,176 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-25 08:54:42,176 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-25 08:54:42,176 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-25 08:54:42,176 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2019-11-25 08:54:42,177 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-11-25 08:54:42,178 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-25 08:54:42,178 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-25 08:54:42,178 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_e56ae15d-e41c-4f8f-8c89-f9a2207ad7ce/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 -> 6f57b560c2271100a3cc213cf38aa06905e4b86e [2019-11-25 08:54:42,485 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-25 08:54:42,498 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-25 08:54:42,501 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-25 08:54:42,502 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-25 08:54:42,503 INFO L275 PluginConnector]: CDTParser initialized [2019-11-25 08:54:42,504 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_e56ae15d-e41c-4f8f-8c89-f9a2207ad7ce/bin/uautomizer/../../sv-benchmarks/c/float-newlib/double_req_bl_1252b.c [2019-11-25 08:54:42,571 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_e56ae15d-e41c-4f8f-8c89-f9a2207ad7ce/bin/uautomizer/data/2230133f3/711f0d809f824817a9e5f13924a80421/FLAG0dd4476a2 [2019-11-25 08:54:42,970 INFO L306 CDTParser]: Found 1 translation units. [2019-11-25 08:54:42,971 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_e56ae15d-e41c-4f8f-8c89-f9a2207ad7ce/sv-benchmarks/c/float-newlib/double_req_bl_1252b.c [2019-11-25 08:54:42,976 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_e56ae15d-e41c-4f8f-8c89-f9a2207ad7ce/bin/uautomizer/data/2230133f3/711f0d809f824817a9e5f13924a80421/FLAG0dd4476a2 [2019-11-25 08:54:43,410 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_e56ae15d-e41c-4f8f-8c89-f9a2207ad7ce/bin/uautomizer/data/2230133f3/711f0d809f824817a9e5f13924a80421 [2019-11-25 08:54:43,412 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-25 08:54:43,413 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-25 08:54:43,417 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-25 08:54:43,417 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-25 08:54:43,420 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-25 08:54:43,421 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:54:43" (1/1) ... [2019-11-25 08:54:43,423 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7890b756 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:54:43, skipping insertion in model container [2019-11-25 08:54:43,424 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:54:43" (1/1) ... [2019-11-25 08:54:43,431 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-25 08:54:43,449 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-25 08:54:43,601 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-25 08:54:43,606 INFO L201 MainTranslator]: Completed pre-run [2019-11-25 08:54:43,633 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-25 08:54:43,658 INFO L205 MainTranslator]: Completed translation [2019-11-25 08:54:43,659 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:54:43 WrapperNode [2019-11-25 08:54:43,659 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-25 08:54:43,660 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-25 08:54:43,660 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-25 08:54:43,660 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-25 08:54:43,667 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:54:43" (1/1) ... [2019-11-25 08:54:43,678 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:54:43" (1/1) ... [2019-11-25 08:54:43,756 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-25 08:54:43,757 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-25 08:54:43,757 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-25 08:54:43,757 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-25 08:54:43,763 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:54:43" (1/1) ... [2019-11-25 08:54:43,763 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:54:43" (1/1) ... [2019-11-25 08:54:43,768 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:54:43" (1/1) ... [2019-11-25 08:54:43,768 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:54:43" (1/1) ... [2019-11-25 08:54:43,779 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:54:43" (1/1) ... [2019-11-25 08:54:43,784 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:54:43" (1/1) ... [2019-11-25 08:54:43,786 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:54:43" (1/1) ... [2019-11-25 08:54:43,790 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-25 08:54:43,790 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-25 08:54:43,791 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-25 08:54:43,794 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-25 08:54:43,795 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:54:43" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e56ae15d-e41c-4f8f-8c89-f9a2207ad7ce/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 [2019-11-25 08:54:43,844 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2019-11-25 08:54:43,845 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-25 08:54:43,845 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2019-11-25 08:54:43,845 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-25 08:54:43,845 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-25 08:54:43,846 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-25 08:54:44,319 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-25 08:54:44,319 INFO L284 CfgBuilder]: Removed 18 assume(true) statements. [2019-11-25 08:54:44,320 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:54:44 BoogieIcfgContainer [2019-11-25 08:54:44,321 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-25 08:54:44,321 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-25 08:54:44,322 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-25 08:54:44,324 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-25 08:54:44,325 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 08:54:43" (1/3) ... [2019-11-25 08:54:44,325 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3304eae6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 08:54:44, skipping insertion in model container [2019-11-25 08:54:44,325 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:54:43" (2/3) ... [2019-11-25 08:54:44,326 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3304eae6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 08:54:44, skipping insertion in model container [2019-11-25 08:54:44,326 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:54:44" (3/3) ... [2019-11-25 08:54:44,327 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1252b.c [2019-11-25 08:54:44,336 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-25 08:54:44,341 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-25 08:54:44,350 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-25 08:54:44,373 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-25 08:54:44,373 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-25 08:54:44,373 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-25 08:54:44,373 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-25 08:54:44,374 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-25 08:54:44,374 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-25 08:54:44,374 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-25 08:54:44,374 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-25 08:54:44,388 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2019-11-25 08:54:44,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-25 08:54:44,394 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:54:44,394 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:54:44,395 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:54:44,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:54:44,399 INFO L82 PathProgramCache]: Analyzing trace with hash -958075201, now seen corresponding path program 1 times [2019-11-25 08:54:44,410 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-25 08:54:44,410 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [938509592] [2019-11-25 08:54:44,410 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e56ae15d-e41c-4f8f-8c89-f9a2207ad7ce/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 [2019-11-25 08:54:44,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:54:44,507 INFO L255 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 1 conjunts are in the unsatisfiable core [2019-11-25 08:54:44,512 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:54:44,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:54:44,528 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-25 08:54:44,533 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:54:44,535 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [938509592] [2019-11-25 08:54:44,535 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:54:44,536 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2019-11-25 08:54:44,537 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858035311] [2019-11-25 08:54:44,540 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-25 08:54:44,541 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-25 08:54:44,549 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-25 08:54:44,550 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-25 08:54:44,552 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 2 states. [2019-11-25 08:54:44,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:54:44,569 INFO L93 Difference]: Finished difference Result 62 states and 98 transitions. [2019-11-25 08:54:44,569 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-25 08:54:44,570 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2019-11-25 08:54:44,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:54:44,580 INFO L225 Difference]: With dead ends: 62 [2019-11-25 08:54:44,580 INFO L226 Difference]: Without dead ends: 29 [2019-11-25 08:54:44,584 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-25 08:54:44,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2019-11-25 08:54:44,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2019-11-25 08:54:44,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2019-11-25 08:54:44,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 40 transitions. [2019-11-25 08:54:44,616 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 40 transitions. Word has length 10 [2019-11-25 08:54:44,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:54:44,616 INFO L462 AbstractCegarLoop]: Abstraction has 29 states and 40 transitions. [2019-11-25 08:54:44,617 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-25 08:54:44,617 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 40 transitions. [2019-11-25 08:54:44,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-25 08:54:44,617 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:54:44,617 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:54:44,818 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2019-11-25 08:54:44,818 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:54:44,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:54:44,819 INFO L82 PathProgramCache]: Analyzing trace with hash 1001584898, now seen corresponding path program 1 times [2019-11-25 08:54:44,820 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-25 08:54:44,820 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1384698217] [2019-11-25 08:54:44,820 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e56ae15d-e41c-4f8f-8c89-f9a2207ad7ce/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 [2019-11-25 08:54:44,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:54:44,912 INFO L255 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-25 08:54:44,913 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:54:44,937 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:54:44,938 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-25 08:54:44,958 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:54:44,959 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1384698217] [2019-11-25 08:54:44,959 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:54:44,959 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2019-11-25 08:54:44,959 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728895549] [2019-11-25 08:54:44,960 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-25 08:54:44,961 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-25 08:54:44,961 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-25 08:54:44,964 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-25 08:54:44,965 INFO L87 Difference]: Start difference. First operand 29 states and 40 transitions. Second operand 6 states. [2019-11-25 08:54:45,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:54:45,086 INFO L93 Difference]: Finished difference Result 68 states and 85 transitions. [2019-11-25 08:54:45,089 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-25 08:54:45,089 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2019-11-25 08:54:45,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:54:45,091 INFO L225 Difference]: With dead ends: 68 [2019-11-25 08:54:45,092 INFO L226 Difference]: Without dead ends: 59 [2019-11-25 08:54:45,093 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2019-11-25 08:54:45,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2019-11-25 08:54:45,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 31. [2019-11-25 08:54:45,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2019-11-25 08:54:45,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 42 transitions. [2019-11-25 08:54:45,106 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 42 transitions. Word has length 11 [2019-11-25 08:54:45,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:54:45,108 INFO L462 AbstractCegarLoop]: Abstraction has 31 states and 42 transitions. [2019-11-25 08:54:45,108 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-25 08:54:45,108 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 42 transitions. [2019-11-25 08:54:45,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-11-25 08:54:45,110 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:54:45,111 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:54:45,314 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2019-11-25 08:54:45,314 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:54:45,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:54:45,315 INFO L82 PathProgramCache]: Analyzing trace with hash 1219247017, now seen corresponding path program 1 times [2019-11-25 08:54:45,315 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-25 08:54:45,316 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1872709920] [2019-11-25 08:54:45,316 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e56ae15d-e41c-4f8f-8c89-f9a2207ad7ce/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 [2019-11-25 08:54:45,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:54:45,401 INFO L255 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 9 conjunts are in the unsatisfiable core [2019-11-25 08:54:45,403 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:54:45,452 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:54:45,452 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-25 08:54:45,492 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:54:45,493 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1872709920] [2019-11-25 08:54:45,493 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:54:45,493 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2019-11-25 08:54:45,493 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771020447] [2019-11-25 08:54:45,494 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-25 08:54:45,494 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-25 08:54:45,494 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-25 08:54:45,495 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-25 08:54:45,495 INFO L87 Difference]: Start difference. First operand 31 states and 42 transitions. Second operand 6 states. [2019-11-25 08:54:45,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:54:45,593 INFO L93 Difference]: Finished difference Result 52 states and 69 transitions. [2019-11-25 08:54:45,594 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-25 08:54:45,594 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2019-11-25 08:54:45,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:54:45,595 INFO L225 Difference]: With dead ends: 52 [2019-11-25 08:54:45,595 INFO L226 Difference]: Without dead ends: 28 [2019-11-25 08:54:45,596 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-11-25 08:54:45,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2019-11-25 08:54:45,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2019-11-25 08:54:45,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2019-11-25 08:54:45,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 35 transitions. [2019-11-25 08:54:45,601 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 35 transitions. Word has length 14 [2019-11-25 08:54:45,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:54:45,601 INFO L462 AbstractCegarLoop]: Abstraction has 28 states and 35 transitions. [2019-11-25 08:54:45,601 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-25 08:54:45,602 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 35 transitions. [2019-11-25 08:54:45,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-11-25 08:54:45,602 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:54:45,603 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:54:45,816 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2019-11-25 08:54:45,817 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:54:45,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:54:45,817 INFO L82 PathProgramCache]: Analyzing trace with hash 1012446717, now seen corresponding path program 1 times [2019-11-25 08:54:45,818 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-25 08:54:45,818 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [710502759] [2019-11-25 08:54:45,819 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e56ae15d-e41c-4f8f-8c89-f9a2207ad7ce/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 [2019-11-25 08:54:45,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:54:45,944 INFO L255 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-25 08:54:45,946 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:54:45,961 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:54:45,961 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-25 08:54:45,981 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:54:45,982 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [710502759] [2019-11-25 08:54:45,982 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:54:45,982 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2019-11-25 08:54:45,982 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113077850] [2019-11-25 08:54:45,983 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-25 08:54:45,983 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-25 08:54:45,983 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-25 08:54:45,983 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-25 08:54:45,984 INFO L87 Difference]: Start difference. First operand 28 states and 35 transitions. Second operand 6 states. [2019-11-25 08:54:46,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:54:46,092 INFO L93 Difference]: Finished difference Result 65 states and 76 transitions. [2019-11-25 08:54:46,093 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-25 08:54:46,094 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2019-11-25 08:54:46,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:54:46,095 INFO L225 Difference]: With dead ends: 65 [2019-11-25 08:54:46,095 INFO L226 Difference]: Without dead ends: 56 [2019-11-25 08:54:46,096 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2019-11-25 08:54:46,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2019-11-25 08:54:46,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 30. [2019-11-25 08:54:46,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2019-11-25 08:54:46,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 37 transitions. [2019-11-25 08:54:46,108 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 37 transitions. Word has length 16 [2019-11-25 08:54:46,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:54:46,108 INFO L462 AbstractCegarLoop]: Abstraction has 30 states and 37 transitions. [2019-11-25 08:54:46,108 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-25 08:54:46,109 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 37 transitions. [2019-11-25 08:54:46,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-11-25 08:54:46,110 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:54:46,110 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:54:46,325 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2019-11-25 08:54:46,325 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:54:46,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:54:46,325 INFO L82 PathProgramCache]: Analyzing trace with hash -414082333, now seen corresponding path program 1 times [2019-11-25 08:54:46,326 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-25 08:54:46,326 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1087285128] [2019-11-25 08:54:46,326 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e56ae15d-e41c-4f8f-8c89-f9a2207ad7ce/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 [2019-11-25 08:54:46,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:54:46,416 INFO L255 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 7 conjunts are in the unsatisfiable core [2019-11-25 08:54:46,418 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:54:46,439 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:54:46,439 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-25 08:54:46,478 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:54:46,478 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1087285128] [2019-11-25 08:54:46,478 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:54:46,478 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2019-11-25 08:54:46,478 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088853249] [2019-11-25 08:54:46,479 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-25 08:54:46,479 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-25 08:54:46,479 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-25 08:54:46,480 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-25 08:54:46,480 INFO L87 Difference]: Start difference. First operand 30 states and 37 transitions. Second operand 4 states. [2019-11-25 08:54:46,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:54:46,492 INFO L93 Difference]: Finished difference Result 40 states and 47 transitions. [2019-11-25 08:54:46,493 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-25 08:54:46,493 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2019-11-25 08:54:46,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:54:46,494 INFO L225 Difference]: With dead ends: 40 [2019-11-25 08:54:46,494 INFO L226 Difference]: Without dead ends: 30 [2019-11-25 08:54:46,494 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 30 SyntacticMatches, 2 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-25 08:54:46,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2019-11-25 08:54:46,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2019-11-25 08:54:46,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2019-11-25 08:54:46,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 36 transitions. [2019-11-25 08:54:46,499 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 36 transitions. Word has length 18 [2019-11-25 08:54:46,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:54:46,499 INFO L462 AbstractCegarLoop]: Abstraction has 30 states and 36 transitions. [2019-11-25 08:54:46,499 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-25 08:54:46,500 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 36 transitions. [2019-11-25 08:54:46,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-11-25 08:54:46,500 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:54:46,501 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:54:46,718 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2019-11-25 08:54:46,718 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:54:46,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:54:46,719 INFO L82 PathProgramCache]: Analyzing trace with hash -356824031, now seen corresponding path program 1 times [2019-11-25 08:54:46,719 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-25 08:54:46,719 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1542530122] [2019-11-25 08:54:46,720 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e56ae15d-e41c-4f8f-8c89-f9a2207ad7ce/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 [2019-11-25 08:54:46,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:54:46,829 INFO L255 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-25 08:54:46,831 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:54:46,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:54:46,879 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-25 08:54:46,881 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-25 08:54:46,935 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:54:46,936 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1542530122] [2019-11-25 08:54:46,936 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:54:46,936 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 9 [2019-11-25 08:54:46,936 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180620923] [2019-11-25 08:54:46,937 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-25 08:54:46,937 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-25 08:54:46,937 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-25 08:54:46,938 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2019-11-25 08:54:46,938 INFO L87 Difference]: Start difference. First operand 30 states and 36 transitions. Second operand 9 states. [2019-11-25 08:54:47,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:54:47,060 INFO L93 Difference]: Finished difference Result 42 states and 47 transitions. [2019-11-25 08:54:47,061 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-25 08:54:47,061 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 18 [2019-11-25 08:54:47,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:54:47,062 INFO L225 Difference]: With dead ends: 42 [2019-11-25 08:54:47,062 INFO L226 Difference]: Without dead ends: 39 [2019-11-25 08:54:47,063 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2019-11-25 08:54:47,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2019-11-25 08:54:47,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 32. [2019-11-25 08:54:47,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2019-11-25 08:54:47,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 38 transitions. [2019-11-25 08:54:47,068 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 38 transitions. Word has length 18 [2019-11-25 08:54:47,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:54:47,068 INFO L462 AbstractCegarLoop]: Abstraction has 32 states and 38 transitions. [2019-11-25 08:54:47,068 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-25 08:54:47,069 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 38 transitions. [2019-11-25 08:54:47,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-11-25 08:54:47,069 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:54:47,069 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:54:47,289 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 mathsat -unsat_core_generation=3 [2019-11-25 08:54:47,289 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:54:47,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:54:47,289 INFO L82 PathProgramCache]: Analyzing trace with hash -208358251, now seen corresponding path program 1 times [2019-11-25 08:54:47,290 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-25 08:54:47,290 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [112244163] [2019-11-25 08:54:47,290 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e56ae15d-e41c-4f8f-8c89-f9a2207ad7ce/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 [2019-11-25 08:54:47,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:54:47,402 INFO L255 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 9 conjunts are in the unsatisfiable core [2019-11-25 08:54:47,404 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:54:47,443 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:54:47,444 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-25 08:54:47,468 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-25 08:54:47,583 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:54:47,583 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [112244163] [2019-11-25 08:54:47,584 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:54:47,584 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2019-11-25 08:54:47,584 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122019164] [2019-11-25 08:54:47,584 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-25 08:54:47,585 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-25 08:54:47,585 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-25 08:54:47,585 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2019-11-25 08:54:47,585 INFO L87 Difference]: Start difference. First operand 32 states and 38 transitions. Second operand 8 states. [2019-11-25 08:54:47,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:54:47,706 INFO L93 Difference]: Finished difference Result 45 states and 50 transitions. [2019-11-25 08:54:47,710 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-25 08:54:47,710 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2019-11-25 08:54:47,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:54:47,711 INFO L225 Difference]: With dead ends: 45 [2019-11-25 08:54:47,711 INFO L226 Difference]: Without dead ends: 27 [2019-11-25 08:54:47,712 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2019-11-25 08:54:47,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2019-11-25 08:54:47,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2019-11-25 08:54:47,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2019-11-25 08:54:47,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions. [2019-11-25 08:54:47,715 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 28 transitions. Word has length 19 [2019-11-25 08:54:47,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:54:47,716 INFO L462 AbstractCegarLoop]: Abstraction has 27 states and 28 transitions. [2019-11-25 08:54:47,716 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-25 08:54:47,716 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 28 transitions. [2019-11-25 08:54:47,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-11-25 08:54:47,718 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:54:47,719 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:54:47,932 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 mathsat -unsat_core_generation=3 [2019-11-25 08:54:47,933 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:54:47,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:54:47,933 INFO L82 PathProgramCache]: Analyzing trace with hash -1524231306, now seen corresponding path program 1 times [2019-11-25 08:54:47,933 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-25 08:54:47,934 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [542151139] [2019-11-25 08:54:47,934 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e56ae15d-e41c-4f8f-8c89-f9a2207ad7ce/bin/uautomizer/mathsat Starting monitored process 9 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with mathsat -unsat_core_generation=3 [2019-11-25 08:54:48,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:54:48,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:54:48,271 INFO L174 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2019-11-25 08:54:48,272 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-25 08:54:48,472 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 mathsat -unsat_core_generation=3 [2019-11-25 08:54:48,503 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 08:54:48 BoogieIcfgContainer [2019-11-25 08:54:48,504 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-25 08:54:48,504 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-25 08:54:48,504 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-25 08:54:48,505 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-25 08:54:48,505 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:54:44" (3/4) ... [2019-11-25 08:54:48,507 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-25 08:54:48,559 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_e56ae15d-e41c-4f8f-8c89-f9a2207ad7ce/bin/uautomizer/witness.graphml [2019-11-25 08:54:48,559 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-25 08:54:48,561 INFO L168 Benchmark]: Toolchain (without parser) took 5147.55 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 149.9 MB). Free memory was 961.8 MB in the beginning and 890.5 MB in the end (delta: 71.3 MB). Peak memory consumption was 221.2 MB. Max. memory is 11.5 GB. [2019-11-25 08:54:48,562 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 1.0 GB. Free memory is still 987.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-25 08:54:48,562 INFO L168 Benchmark]: CACSL2BoogieTranslator took 242.35 ms. Allocated memory is still 1.0 GB. Free memory was 961.8 MB in the beginning and 945.7 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 11.5 GB. [2019-11-25 08:54:48,563 INFO L168 Benchmark]: Boogie Procedure Inliner took 97.20 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 149.9 MB). Free memory was 945.7 MB in the beginning and 1.1 GB in the end (delta: -194.3 MB). Peak memory consumption was 10.2 MB. Max. memory is 11.5 GB. [2019-11-25 08:54:48,563 INFO L168 Benchmark]: Boogie Preprocessor took 33.20 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. [2019-11-25 08:54:48,564 INFO L168 Benchmark]: RCFGBuilder took 530.26 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: 26.1 MB). Peak memory consumption was 26.1 MB. Max. memory is 11.5 GB. [2019-11-25 08:54:48,564 INFO L168 Benchmark]: TraceAbstraction took 4182.29 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 896.9 MB in the end (delta: 216.9 MB). Peak memory consumption was 216.9 MB. Max. memory is 11.5 GB. [2019-11-25 08:54:48,565 INFO L168 Benchmark]: Witness Printer took 55.30 ms. Allocated memory is still 1.2 GB. Free memory was 896.9 MB in the beginning and 890.5 MB in the end (delta: 6.4 MB). Peak memory consumption was 6.4 MB. Max. memory is 11.5 GB. [2019-11-25 08:54:48,567 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 1.0 GB. Free memory is still 987.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 242.35 ms. Allocated memory is still 1.0 GB. Free memory was 961.8 MB in the beginning and 945.7 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 97.20 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 149.9 MB). Free memory was 945.7 MB in the beginning and 1.1 GB in the end (delta: -194.3 MB). Peak memory consumption was 10.2 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 33.20 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 530.26 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: 26.1 MB). Peak memory consumption was 26.1 MB. Max. memory is 11.5 GB. * TraceAbstraction took 4182.29 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 896.9 MB in the end (delta: 216.9 MB). Peak memory consumption was 216.9 MB. Max. memory is 11.5 GB. * Witness Printer took 55.30 ms. Allocated memory is still 1.2 GB. Free memory was 896.9 MB in the beginning and 890.5 MB in the end (delta: 6.4 MB). Peak memory consumption was 6.4 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 85]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L79] double x = 0.0; [L80] double y = -0.0; [L24] __uint32_t msw, lsw; [L27] ieee_double_shape_type ew_u; [L28] ew_u.value = (x) [L29] EXPR ew_u.parts.msw [L29] (msw) = ew_u.parts.msw [L30] EXPR ew_u.parts.lsw [L30] (lsw) = ew_u.parts.lsw [L33-L34] COND TRUE (msw == 0x00000000 && lsw == 0x00000000) || (msw == 0x80000000 && lsw == 0x00000000) [L35] return 2; [L52] COND FALSE !(__fpclassify_double(x) == 0) [L24] __uint32_t msw, lsw; [L27] ieee_double_shape_type ew_u; [L28] ew_u.value = (x) [L29] EXPR ew_u.parts.msw [L29] (msw) = ew_u.parts.msw [L30] EXPR ew_u.parts.lsw [L30] (lsw) = ew_u.parts.lsw [L33-L34] COND TRUE (msw == 0x00000000 && lsw == 0x00000000) || (msw == 0x80000000 && lsw == 0x00000000) [L35] return 2; [L54] COND FALSE !(__fpclassify_double(y) == 0) [L57] EXPR x > y ? x : y [L57] return x > y ? x : y; [L81] double res = fmax_double(x, y); [L84] EXPR res == 0.0 && __signbit_double(res) == 0 [L61] __uint32_t msw; [L64] ieee_double_shape_type gh_u; [L65] gh_u.value = (x) [L66] EXPR gh_u.parts.msw [L66] (msw) = gh_u.parts.msw [L69] return (msw & 0x80000000) != 0; [L84] EXPR res == 0.0 && __signbit_double(res) == 0 [L84] COND TRUE !(res == 0.0 && __signbit_double(res) == 0) [L85] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 32 locations, 1 error locations. Result: UNSAFE, OverallTime: 4.1s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 234 SDtfs, 290 SDslu, 362 SDs, 0 SdLazy, 112 SolverSat, 21 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 209 GetRequests, 168 SyntacticMatches, 3 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=32occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 7 MinimizatonAttempts, 61 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 128 NumberOfCodeBlocks, 128 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 198 ConstructedInterpolants, 15 QuantifiedInterpolants, 12524 SizeOfPredicates, 27 NumberOfNonLiveVariables, 388 ConjunctsInSsa, 40 ConjunctsInUnsatCore, 14 InterpolantComputations, 14 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...