./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/double_req_bl_1232b.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b5699aa Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_143e88ff-02fb-43dc-84bd-a758d9e1d09d/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_143e88ff-02fb-43dc-84bd-a758d9e1d09d/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_143e88ff-02fb-43dc-84bd-a758d9e1d09d/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_143e88ff-02fb-43dc-84bd-a758d9e1d09d/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1232b.c -s /tmp/vcloud-vcloud-master/worker/run_dir_143e88ff-02fb-43dc-84bd-a758d9e1d09d/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_143e88ff-02fb-43dc-84bd-a758d9e1d09d/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 064927d7c1e3d8158c8524deee46f65d988c7936 ............................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_143e88ff-02fb-43dc-84bd-a758d9e1d09d/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_143e88ff-02fb-43dc-84bd-a758d9e1d09d/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_143e88ff-02fb-43dc-84bd-a758d9e1d09d/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_143e88ff-02fb-43dc-84bd-a758d9e1d09d/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1232b.c -s /tmp/vcloud-vcloud-master/worker/run_dir_143e88ff-02fb-43dc-84bd-a758d9e1d09d/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_143e88ff-02fb-43dc-84bd-a758d9e1d09d/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 064927d7c1e3d8158c8524deee46f65d988c7936 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.1.24-6b5699a [2019-11-25 08:56:47,393 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-25 08:56:47,394 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-25 08:56:47,405 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-25 08:56:47,405 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-25 08:56:47,406 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-25 08:56:47,407 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-25 08:56:47,409 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-25 08:56:47,411 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-25 08:56:47,411 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-25 08:56:47,412 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-25 08:56:47,413 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-25 08:56:47,414 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-25 08:56:47,414 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-25 08:56:47,415 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-25 08:56:47,416 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-25 08:56:47,417 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-25 08:56:47,421 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-25 08:56:47,422 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-25 08:56:47,424 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-25 08:56:47,426 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-25 08:56:47,427 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-25 08:56:47,428 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-25 08:56:47,429 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-25 08:56:47,431 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-25 08:56:47,431 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-25 08:56:47,432 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-25 08:56:47,433 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-25 08:56:47,433 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-25 08:56:47,434 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-25 08:56:47,434 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-25 08:56:47,440 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-25 08:56:47,441 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-25 08:56:47,442 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-25 08:56:47,445 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-25 08:56:47,445 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-25 08:56:47,447 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-25 08:56:47,447 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-25 08:56:47,447 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-25 08:56:47,450 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-25 08:56:47,452 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-25 08:56:47,452 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_143e88ff-02fb-43dc-84bd-a758d9e1d09d/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-25 08:56:47,470 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-25 08:56:47,471 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-25 08:56:47,472 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-25 08:56:47,472 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-25 08:56:47,472 INFO L138 SettingsManager]: * Use SBE=true [2019-11-25 08:56:47,472 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-25 08:56:47,473 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-25 08:56:47,473 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-25 08:56:47,473 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-25 08:56:47,473 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-25 08:56:47,474 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-25 08:56:47,474 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-25 08:56:47,474 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-25 08:56:47,474 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-25 08:56:47,475 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-25 08:56:47,475 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-25 08:56:47,475 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-25 08:56:47,475 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-25 08:56:47,475 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-25 08:56:47,476 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-25 08:56:47,476 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-25 08:56:47,476 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-25 08:56:47,476 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-25 08:56:47,476 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-25 08:56:47,476 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-25 08:56:47,477 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-25 08:56:47,477 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-25 08:56:47,477 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-25 08:56:47,477 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_143e88ff-02fb-43dc-84bd-a758d9e1d09d/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 064927d7c1e3d8158c8524deee46f65d988c7936 [2019-11-25 08:56:47,650 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-25 08:56:47,667 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-25 08:56:47,670 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-25 08:56:47,671 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-25 08:56:47,672 INFO L275 PluginConnector]: CDTParser initialized [2019-11-25 08:56:47,672 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_143e88ff-02fb-43dc-84bd-a758d9e1d09d/bin/uautomizer/../../sv-benchmarks/c/float-newlib/double_req_bl_1232b.c [2019-11-25 08:56:47,735 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_143e88ff-02fb-43dc-84bd-a758d9e1d09d/bin/uautomizer/data/8aad4c0e1/44b22ef106ae4af6975c99c9ad19caa8/FLAG1c8382deb [2019-11-25 08:56:48,161 INFO L306 CDTParser]: Found 1 translation units. [2019-11-25 08:56:48,161 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_143e88ff-02fb-43dc-84bd-a758d9e1d09d/sv-benchmarks/c/float-newlib/double_req_bl_1232b.c [2019-11-25 08:56:48,167 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_143e88ff-02fb-43dc-84bd-a758d9e1d09d/bin/uautomizer/data/8aad4c0e1/44b22ef106ae4af6975c99c9ad19caa8/FLAG1c8382deb [2019-11-25 08:56:48,180 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_143e88ff-02fb-43dc-84bd-a758d9e1d09d/bin/uautomizer/data/8aad4c0e1/44b22ef106ae4af6975c99c9ad19caa8 [2019-11-25 08:56:48,182 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-25 08:56:48,183 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-25 08:56:48,184 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-25 08:56:48,184 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-25 08:56:48,188 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-25 08:56:48,188 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:56:48" (1/1) ... [2019-11-25 08:56:48,191 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@21d30fa5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:56:48, skipping insertion in model container [2019-11-25 08:56:48,191 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:56:48" (1/1) ... [2019-11-25 08:56:48,198 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-25 08:56:48,215 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-25 08:56:48,487 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-25 08:56:48,491 INFO L201 MainTranslator]: Completed pre-run [2019-11-25 08:56:48,544 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-25 08:56:48,564 INFO L205 MainTranslator]: Completed translation [2019-11-25 08:56:48,564 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:56:48 WrapperNode [2019-11-25 08:56:48,564 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-25 08:56:48,565 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-25 08:56:48,565 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-25 08:56:48,565 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-25 08:56:48,573 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:56:48" (1/1) ... [2019-11-25 08:56:48,582 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:56:48" (1/1) ... [2019-11-25 08:56:48,605 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-25 08:56:48,605 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-25 08:56:48,605 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-25 08:56:48,605 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-25 08:56:48,617 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:56:48" (1/1) ... [2019-11-25 08:56:48,617 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:56:48" (1/1) ... [2019-11-25 08:56:48,619 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:56:48" (1/1) ... [2019-11-25 08:56:48,620 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:56:48" (1/1) ... [2019-11-25 08:56:48,630 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:56:48" (1/1) ... [2019-11-25 08:56:48,641 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:56:48" (1/1) ... [2019-11-25 08:56:48,647 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:56:48" (1/1) ... [2019-11-25 08:56:48,656 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-25 08:56:48,656 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-25 08:56:48,660 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-25 08:56:48,660 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-25 08:56:48,660 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:56:48" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_143e88ff-02fb-43dc-84bd-a758d9e1d09d/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 08:56:48,713 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-25 08:56:48,714 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2019-11-25 08:56:48,714 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-25 08:56:48,714 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-25 08:56:48,715 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-25 08:56:48,715 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-25 08:56:49,069 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-25 08:56:49,070 INFO L284 CfgBuilder]: Removed 18 assume(true) statements. [2019-11-25 08:56:49,071 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:56:49 BoogieIcfgContainer [2019-11-25 08:56:49,071 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-25 08:56:49,072 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-25 08:56:49,072 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-25 08:56:49,074 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-25 08:56:49,075 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 08:56:48" (1/3) ... [2019-11-25 08:56:49,075 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@192f6f1b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 08:56:49, skipping insertion in model container [2019-11-25 08:56:49,075 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:56:48" (2/3) ... [2019-11-25 08:56:49,076 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@192f6f1b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 08:56:49, skipping insertion in model container [2019-11-25 08:56:49,076 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:56:49" (3/3) ... [2019-11-25 08:56:49,077 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1232b.c [2019-11-25 08:56:49,087 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-25 08:56:49,092 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-25 08:56:49,099 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-25 08:56:49,120 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-25 08:56:49,120 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-25 08:56:49,120 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-25 08:56:49,121 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-25 08:56:49,121 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-25 08:56:49,121 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-25 08:56:49,121 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-25 08:56:49,121 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-25 08:56:49,135 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2019-11-25 08:56:49,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-25 08:56:49,141 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:56:49,141 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:56:49,142 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:56:49,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:56:49,147 INFO L82 PathProgramCache]: Analyzing trace with hash -958075201, now seen corresponding path program 1 times [2019-11-25 08:56:49,155 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:56:49,155 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2000427242] [2019-11-25 08:56:49,156 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:56:49,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:56:49,244 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 08:56:49,245 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2000427242] [2019-11-25 08:56:49,246 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:56:49,246 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-25 08:56:49,246 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877911174] [2019-11-25 08:56:49,249 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-25 08:56:49,249 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:56:49,258 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-25 08:56:49,258 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-25 08:56:49,260 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 2 states. [2019-11-25 08:56:49,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:56:49,275 INFO L93 Difference]: Finished difference Result 62 states and 98 transitions. [2019-11-25 08:56:49,275 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-25 08:56:49,276 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2019-11-25 08:56:49,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:56:49,285 INFO L225 Difference]: With dead ends: 62 [2019-11-25 08:56:49,285 INFO L226 Difference]: Without dead ends: 29 [2019-11-25 08:56:49,288 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 08:56:49,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2019-11-25 08:56:49,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2019-11-25 08:56:49,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2019-11-25 08:56:49,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 40 transitions. [2019-11-25 08:56:49,317 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 40 transitions. Word has length 10 [2019-11-25 08:56:49,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:56:49,317 INFO L462 AbstractCegarLoop]: Abstraction has 29 states and 40 transitions. [2019-11-25 08:56:49,318 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-25 08:56:49,318 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 40 transitions. [2019-11-25 08:56:49,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-25 08:56:49,318 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:56:49,319 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:56:49,319 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:56:49,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:56:49,319 INFO L82 PathProgramCache]: Analyzing trace with hash 1001584898, now seen corresponding path program 1 times [2019-11-25 08:56:49,320 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:56:49,320 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2009784182] [2019-11-25 08:56:49,320 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:56:49,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:56:49,402 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 08:56:49,403 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2009784182] [2019-11-25 08:56:49,403 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:56:49,403 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-25 08:56:49,403 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311310469] [2019-11-25 08:56:49,405 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-25 08:56:49,405 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:56:49,405 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-25 08:56:49,405 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-25 08:56:49,405 INFO L87 Difference]: Start difference. First operand 29 states and 40 transitions. Second operand 4 states. [2019-11-25 08:56:49,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:56:49,485 INFO L93 Difference]: Finished difference Result 53 states and 67 transitions. [2019-11-25 08:56:49,485 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-25 08:56:49,485 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2019-11-25 08:56:49,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:56:49,486 INFO L225 Difference]: With dead ends: 53 [2019-11-25 08:56:49,486 INFO L226 Difference]: Without dead ends: 44 [2019-11-25 08:56:49,487 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 08:56:49,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2019-11-25 08:56:49,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 31. [2019-11-25 08:56:49,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2019-11-25 08:56:49,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 42 transitions. [2019-11-25 08:56:49,494 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 42 transitions. Word has length 11 [2019-11-25 08:56:49,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:56:49,495 INFO L462 AbstractCegarLoop]: Abstraction has 31 states and 42 transitions. [2019-11-25 08:56:49,495 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-25 08:56:49,495 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 42 transitions. [2019-11-25 08:56:49,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-11-25 08:56:49,496 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:56:49,496 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:56:49,496 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:56:49,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:56:49,497 INFO L82 PathProgramCache]: Analyzing trace with hash -555760345, now seen corresponding path program 1 times [2019-11-25 08:56:49,497 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:56:49,497 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2013843819] [2019-11-25 08:56:49,497 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:56:49,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:56:49,553 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 08:56:49,553 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2013843819] [2019-11-25 08:56:49,553 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:56:49,554 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-25 08:56:49,554 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586658578] [2019-11-25 08:56:49,554 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-25 08:56:49,554 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:56:49,555 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-25 08:56:49,555 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-25 08:56:49,555 INFO L87 Difference]: Start difference. First operand 31 states and 42 transitions. Second operand 4 states. [2019-11-25 08:56:49,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:56:49,603 INFO L93 Difference]: Finished difference Result 55 states and 69 transitions. [2019-11-25 08:56:49,604 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-25 08:56:49,604 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2019-11-25 08:56:49,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:56:49,605 INFO L225 Difference]: With dead ends: 55 [2019-11-25 08:56:49,605 INFO L226 Difference]: Without dead ends: 46 [2019-11-25 08:56:49,606 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 08:56:49,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2019-11-25 08:56:49,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 31. [2019-11-25 08:56:49,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2019-11-25 08:56:49,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 42 transitions. [2019-11-25 08:56:49,611 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 42 transitions. Word has length 14 [2019-11-25 08:56:49,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:56:49,612 INFO L462 AbstractCegarLoop]: Abstraction has 31 states and 42 transitions. [2019-11-25 08:56:49,612 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-25 08:56:49,612 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 42 transitions. [2019-11-25 08:56:49,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-11-25 08:56:49,613 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:56:49,613 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:56:49,613 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:56:49,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:56:49,614 INFO L82 PathProgramCache]: Analyzing trace with hash 1219247017, now seen corresponding path program 1 times [2019-11-25 08:56:49,614 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:56:49,614 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051402594] [2019-11-25 08:56:49,614 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:56:49,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:56:49,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:56:49,695 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:56:49,696 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-25 08:56:49,718 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 08:56:49 BoogieIcfgContainer [2019-11-25 08:56:49,718 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-25 08:56:49,719 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-25 08:56:49,719 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-25 08:56:49,719 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-25 08:56:49,720 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:56:49" (3/4) ... [2019-11-25 08:56:49,722 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-11-25 08:56:49,723 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-25 08:56:49,724 INFO L168 Benchmark]: Toolchain (without parser) took 1540.69 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 150.5 MB). Free memory was 950.1 MB in the beginning and 1.1 GB in the end (delta: -116.6 MB). Peak memory consumption was 33.8 MB. Max. memory is 11.5 GB. [2019-11-25 08:56:49,725 INFO L168 Benchmark]: CDTParser took 0.17 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 08:56:49,726 INFO L168 Benchmark]: CACSL2BoogieTranslator took 380.44 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 150.5 MB). Free memory was 950.1 MB in the beginning and 1.1 GB in the end (delta: -195.4 MB). Peak memory consumption was 22.8 MB. Max. memory is 11.5 GB. [2019-11-25 08:56:49,726 INFO L168 Benchmark]: Boogie Procedure Inliner took 40.09 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 08:56:49,727 INFO L168 Benchmark]: Boogie Preprocessor took 50.93 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 08:56:49,728 INFO L168 Benchmark]: RCFGBuilder took 414.83 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: 29.1 MB). Peak memory consumption was 29.1 MB. Max. memory is 11.5 GB. [2019-11-25 08:56:49,728 INFO L168 Benchmark]: TraceAbstraction took 646.36 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 44.3 MB). Peak memory consumption was 44.3 MB. Max. memory is 11.5 GB. [2019-11-25 08:56:49,729 INFO L168 Benchmark]: Witness Printer took 4.03 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 08:56:49,732 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 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 380.44 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 150.5 MB). Free memory was 950.1 MB in the beginning and 1.1 GB in the end (delta: -195.4 MB). Peak memory consumption was 22.8 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 40.09 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 50.93 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 414.83 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: 29.1 MB). Peak memory consumption was 29.1 MB. Max. memory is 11.5 GB. * TraceAbstraction took 646.36 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 44.3 MB). Peak memory consumption was 44.3 MB. Max. memory is 11.5 GB. * Witness Printer took 4.03 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. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 80]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 79, overapproximation of someUnaryDOUBLEoperation at line 74. Possible FailurePath: [L74] double x = -0.0; [L75] double y = 0.0; [L19] __uint32_t msw, lsw; [L22] ieee_double_shape_type ew_u; [L23] ew_u.value = (x) [L24] EXPR ew_u.parts.msw [L24] (msw) = ew_u.parts.msw [L25] EXPR ew_u.parts.lsw [L25] (lsw) = ew_u.parts.lsw [L28-L29] COND FALSE !((msw == 0x00000000 && lsw == 0x00000000) || (msw == 0x80000000 && lsw == 0x00000000)) [L31-L32] COND FALSE !((msw >= 0x00100000 && msw <= 0x7fefffff) || (msw >= 0x80100000 && msw <= 0xffefffff)) [L34-L35] COND FALSE !(( msw <= 0x000fffff) || (msw >= 0x80000000 && msw <= 0x800fffff)) [L38-L39] COND FALSE !((msw == 0x7ff00000 && lsw == 0x00000000) || (msw == 0xfff00000 && lsw == 0x00000000)) [L42] return 0; [L46] COND TRUE __fpclassify_double(x) == 0 [L47] return y; [L76] double res = fmin_double(x, y); [L79] EXPR res == -0.0 && __signbit_double(res) == 1 [L79] COND TRUE !(res == -0.0 && __signbit_double(res) == 1) [L80] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 32 locations, 1 error locations. Result: UNSAFE, OverallTime: 0.5s, 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 08:56:51,617 INFO L177 SettingsManager]: Resetting all preferences to default values... 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[2019-11-25 08:56:51,655 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-25 08:56:51,658 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-25 08:56:51,659 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-25 08:56:51,661 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-25 08:56:51,663 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-25 08:56:51,666 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-25 08:56:51,669 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-25 08:56:51,672 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-25 08:56:51,675 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-25 08:56:51,678 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-25 08:56:51,681 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-25 08:56:51,682 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-25 08:56:51,685 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-25 08:56:51,687 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-25 08:56:51,688 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-25 08:56:51,689 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-25 08:56:51,689 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-25 08:56:51,691 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-25 08:56:51,692 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-25 08:56:51,692 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-25 08:56:51,693 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-25 08:56:51,694 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-25 08:56:51,695 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-25 08:56:51,696 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-25 08:56:51,697 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-25 08:56:51,697 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-25 08:56:51,697 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-25 08:56:51,699 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-25 08:56:51,701 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-25 08:56:51,702 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_143e88ff-02fb-43dc-84bd-a758d9e1d09d/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2019-11-25 08:56:51,723 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-25 08:56:51,723 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-25 08:56:51,725 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-25 08:56:51,725 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-25 08:56:51,725 INFO L138 SettingsManager]: * Use SBE=true [2019-11-25 08:56:51,727 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-25 08:56:51,727 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-25 08:56:51,728 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-25 08:56:51,728 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-25 08:56:51,728 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-25 08:56:51,729 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-25 08:56:51,730 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-25 08:56:51,730 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-11-25 08:56:51,730 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-11-25 08:56:51,730 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-11-25 08:56:51,731 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-25 08:56:51,731 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-25 08:56:51,731 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-25 08:56:51,732 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-25 08:56:51,732 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-25 08:56:51,732 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-25 08:56:51,732 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-25 08:56:51,733 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-25 08:56:51,734 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-25 08:56:51,734 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-25 08:56:51,734 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-25 08:56:51,734 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-25 08:56:51,735 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2019-11-25 08:56:51,735 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-11-25 08:56:51,735 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-25 08:56:51,735 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-25 08:56:51,736 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_143e88ff-02fb-43dc-84bd-a758d9e1d09d/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 064927d7c1e3d8158c8524deee46f65d988c7936 [2019-11-25 08:56:52,017 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-25 08:56:52,028 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-25 08:56:52,031 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-25 08:56:52,032 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-25 08:56:52,032 INFO L275 PluginConnector]: CDTParser initialized [2019-11-25 08:56:52,033 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_143e88ff-02fb-43dc-84bd-a758d9e1d09d/bin/uautomizer/../../sv-benchmarks/c/float-newlib/double_req_bl_1232b.c [2019-11-25 08:56:52,080 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_143e88ff-02fb-43dc-84bd-a758d9e1d09d/bin/uautomizer/data/cd449685e/d1606fbac4ce4ce0af286214c7b37324/FLAGa2a527439 [2019-11-25 08:56:52,422 INFO L306 CDTParser]: Found 1 translation units. [2019-11-25 08:56:52,424 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_143e88ff-02fb-43dc-84bd-a758d9e1d09d/sv-benchmarks/c/float-newlib/double_req_bl_1232b.c [2019-11-25 08:56:52,430 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_143e88ff-02fb-43dc-84bd-a758d9e1d09d/bin/uautomizer/data/cd449685e/d1606fbac4ce4ce0af286214c7b37324/FLAGa2a527439 [2019-11-25 08:56:52,802 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_143e88ff-02fb-43dc-84bd-a758d9e1d09d/bin/uautomizer/data/cd449685e/d1606fbac4ce4ce0af286214c7b37324 [2019-11-25 08:56:52,805 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-25 08:56:52,806 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-25 08:56:52,807 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-25 08:56:52,807 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-25 08:56:52,810 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-25 08:56:52,811 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:56:52" (1/1) ... [2019-11-25 08:56:52,814 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39bb20a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:56:52, skipping insertion in model container [2019-11-25 08:56:52,814 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:56:52" (1/1) ... [2019-11-25 08:56:52,821 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-25 08:56:52,845 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-25 08:56:53,058 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-25 08:56:53,066 INFO L201 MainTranslator]: Completed pre-run [2019-11-25 08:56:53,114 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-25 08:56:53,146 INFO L205 MainTranslator]: Completed translation [2019-11-25 08:56:53,147 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:56:53 WrapperNode [2019-11-25 08:56:53,147 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-25 08:56:53,147 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-25 08:56:53,148 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-25 08:56:53,149 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-25 08:56:53,211 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:56:53" (1/1) ... [2019-11-25 08:56:53,231 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:56:53" (1/1) ... [2019-11-25 08:56:53,271 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-25 08:56:53,273 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-25 08:56:53,273 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-25 08:56:53,273 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-25 08:56:53,281 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:56:53" (1/1) ... [2019-11-25 08:56:53,281 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:56:53" (1/1) ... [2019-11-25 08:56:53,285 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:56:53" (1/1) ... [2019-11-25 08:56:53,285 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:56:53" (1/1) ... [2019-11-25 08:56:53,293 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:56:53" (1/1) ... [2019-11-25 08:56:53,305 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:56:53" (1/1) ... [2019-11-25 08:56:53,307 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:56:53" (1/1) ... [2019-11-25 08:56:53,310 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-25 08:56:53,310 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-25 08:56:53,310 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-25 08:56:53,310 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-25 08:56:53,311 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:56:53" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_143e88ff-02fb-43dc-84bd-a758d9e1d09d/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 08:56:53,363 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2019-11-25 08:56:53,363 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-25 08:56:53,364 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2019-11-25 08:56:53,364 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-25 08:56:53,364 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-25 08:56:53,364 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-25 08:56:53,814 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-25 08:56:53,814 INFO L284 CfgBuilder]: Removed 18 assume(true) statements. [2019-11-25 08:56:53,815 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:56:53 BoogieIcfgContainer [2019-11-25 08:56:53,815 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-25 08:56:53,816 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-25 08:56:53,816 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-25 08:56:53,819 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-25 08:56:53,819 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 08:56:52" (1/3) ... [2019-11-25 08:56:53,819 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@343b6003 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 08:56:53, skipping insertion in model container [2019-11-25 08:56:53,820 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:56:53" (2/3) ... [2019-11-25 08:56:53,820 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@343b6003 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 08:56:53, skipping insertion in model container [2019-11-25 08:56:53,820 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:56:53" (3/3) ... [2019-11-25 08:56:53,821 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1232b.c [2019-11-25 08:56:53,830 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-25 08:56:53,837 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-25 08:56:53,847 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-25 08:56:53,869 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-25 08:56:53,869 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-25 08:56:53,869 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-25 08:56:53,869 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-25 08:56:53,869 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-25 08:56:53,870 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-25 08:56:53,870 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-25 08:56:53,870 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-25 08:56:53,884 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2019-11-25 08:56:53,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-25 08:56:53,889 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:56:53,890 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:56:53,890 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:56:53,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:56:53,894 INFO L82 PathProgramCache]: Analyzing trace with hash -958075201, now seen corresponding path program 1 times [2019-11-25 08:56:53,902 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-25 08:56:53,902 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1671998537] [2019-11-25 08:56:53,903 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_143e88ff-02fb-43dc-84bd-a758d9e1d09d/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 08:56:53,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:56:53,999 INFO L255 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 1 conjunts are in the unsatisfiable core [2019-11-25 08:56:54,002 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:56:54,014 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 08:56:54,014 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-25 08:56:54,017 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 08:56:54,017 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1671998537] [2019-11-25 08:56:54,018 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:56:54,018 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2019-11-25 08:56:54,019 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635176992] [2019-11-25 08:56:54,022 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-25 08:56:54,023 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-25 08:56:54,035 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-25 08:56:54,035 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-25 08:56:54,037 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 2 states. [2019-11-25 08:56:54,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:56:54,053 INFO L93 Difference]: Finished difference Result 62 states and 98 transitions. [2019-11-25 08:56:54,053 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-25 08:56:54,055 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2019-11-25 08:56:54,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:56:54,064 INFO L225 Difference]: With dead ends: 62 [2019-11-25 08:56:54,064 INFO L226 Difference]: Without dead ends: 29 [2019-11-25 08:56:54,067 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 08:56:54,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2019-11-25 08:56:54,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2019-11-25 08:56:54,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2019-11-25 08:56:54,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 40 transitions. [2019-11-25 08:56:54,098 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 40 transitions. Word has length 10 [2019-11-25 08:56:54,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:56:54,099 INFO L462 AbstractCegarLoop]: Abstraction has 29 states and 40 transitions. [2019-11-25 08:56:54,099 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-25 08:56:54,099 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 40 transitions. [2019-11-25 08:56:54,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-25 08:56:54,100 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:56:54,100 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:56:54,311 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2019-11-25 08:56:54,311 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:56:54,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:56:54,312 INFO L82 PathProgramCache]: Analyzing trace with hash 1001584898, now seen corresponding path program 1 times [2019-11-25 08:56:54,312 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-25 08:56:54,313 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1158468959] [2019-11-25 08:56:54,313 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_143e88ff-02fb-43dc-84bd-a758d9e1d09d/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 08:56:54,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:56:54,401 INFO L255 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-25 08:56:54,403 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:56:54,427 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 08:56:54,436 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-25 08:56:54,463 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 08:56:54,463 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1158468959] [2019-11-25 08:56:54,463 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:56:54,463 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2019-11-25 08:56:54,464 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333206519] [2019-11-25 08:56:54,465 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-25 08:56:54,465 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-25 08:56:54,465 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-25 08:56:54,468 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-25 08:56:54,469 INFO L87 Difference]: Start difference. First operand 29 states and 40 transitions. Second operand 6 states. [2019-11-25 08:56:54,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:56:54,719 INFO L93 Difference]: Finished difference Result 68 states and 85 transitions. [2019-11-25 08:56:54,721 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-25 08:56:54,721 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2019-11-25 08:56:54,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:56:54,723 INFO L225 Difference]: With dead ends: 68 [2019-11-25 08:56:54,723 INFO L226 Difference]: Without dead ends: 59 [2019-11-25 08:56:54,724 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 08:56:54,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2019-11-25 08:56:54,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 31. [2019-11-25 08:56:54,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2019-11-25 08:56:54,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 42 transitions. [2019-11-25 08:56:54,731 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 42 transitions. Word has length 11 [2019-11-25 08:56:54,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:56:54,731 INFO L462 AbstractCegarLoop]: Abstraction has 31 states and 42 transitions. [2019-11-25 08:56:54,731 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-25 08:56:54,732 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 42 transitions. [2019-11-25 08:56:54,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-11-25 08:56:54,734 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:56:54,734 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:56:54,939 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2019-11-25 08:56:54,940 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:56:54,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:56:54,940 INFO L82 PathProgramCache]: Analyzing trace with hash 1219247017, now seen corresponding path program 1 times [2019-11-25 08:56:54,941 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-25 08:56:54,943 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [566407100] [2019-11-25 08:56:54,944 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_143e88ff-02fb-43dc-84bd-a758d9e1d09d/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 08:56:55,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:56:55,024 INFO L255 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 9 conjunts are in the unsatisfiable core [2019-11-25 08:56:55,026 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:56:55,072 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 08:56:55,072 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-25 08:56:55,100 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-25 08:56:55,142 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 08:56:55,143 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [566407100] [2019-11-25 08:56:55,143 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:56:55,143 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2019-11-25 08:56:55,143 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694882524] [2019-11-25 08:56:55,144 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-25 08:56:55,144 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-25 08:56:55,144 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-25 08:56:55,144 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-25 08:56:55,144 INFO L87 Difference]: Start difference. First operand 31 states and 42 transitions. Second operand 6 states. [2019-11-25 08:56:55,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:56:55,271 INFO L93 Difference]: Finished difference Result 52 states and 69 transitions. [2019-11-25 08:56:55,272 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-25 08:56:55,272 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2019-11-25 08:56:55,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:56:55,273 INFO L225 Difference]: With dead ends: 52 [2019-11-25 08:56:55,273 INFO L226 Difference]: Without dead ends: 28 [2019-11-25 08:56:55,273 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 08:56:55,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2019-11-25 08:56:55,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2019-11-25 08:56:55,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2019-11-25 08:56:55,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 35 transitions. [2019-11-25 08:56:55,278 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 35 transitions. Word has length 14 [2019-11-25 08:56:55,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:56:55,279 INFO L462 AbstractCegarLoop]: Abstraction has 28 states and 35 transitions. [2019-11-25 08:56:55,279 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-25 08:56:55,279 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 35 transitions. [2019-11-25 08:56:55,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-11-25 08:56:55,280 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:56:55,280 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:56:55,483 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2019-11-25 08:56:55,483 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:56:55,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:56:55,484 INFO L82 PathProgramCache]: Analyzing trace with hash 1012446717, now seen corresponding path program 1 times [2019-11-25 08:56:55,484 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-25 08:56:55,484 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1552256054] [2019-11-25 08:56:55,485 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_143e88ff-02fb-43dc-84bd-a758d9e1d09d/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 08:56:55,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:56:55,607 INFO L255 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-25 08:56:55,608 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:56:55,624 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 08:56:55,624 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-25 08:56:55,647 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 08:56:55,647 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1552256054] [2019-11-25 08:56:55,647 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:56:55,648 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2019-11-25 08:56:55,648 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294547322] [2019-11-25 08:56:55,648 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-25 08:56:55,648 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-25 08:56:55,649 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-25 08:56:55,649 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-25 08:56:55,649 INFO L87 Difference]: Start difference. First operand 28 states and 35 transitions. Second operand 6 states. [2019-11-25 08:56:56,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:56:56,104 INFO L93 Difference]: Finished difference Result 65 states and 76 transitions. [2019-11-25 08:56:56,105 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-25 08:56:56,105 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2019-11-25 08:56:56,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:56:56,106 INFO L225 Difference]: With dead ends: 65 [2019-11-25 08:56:56,106 INFO L226 Difference]: Without dead ends: 56 [2019-11-25 08:56:56,107 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 08:56:56,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2019-11-25 08:56:56,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 30. [2019-11-25 08:56:56,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2019-11-25 08:56:56,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 37 transitions. [2019-11-25 08:56:56,112 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 37 transitions. Word has length 16 [2019-11-25 08:56:56,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:56:56,113 INFO L462 AbstractCegarLoop]: Abstraction has 30 states and 37 transitions. [2019-11-25 08:56:56,113 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-25 08:56:56,113 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 37 transitions. [2019-11-25 08:56:56,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-11-25 08:56:56,114 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:56:56,114 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 08:56:56,323 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2019-11-25 08:56:56,323 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:56:56,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:56:56,324 INFO L82 PathProgramCache]: Analyzing trace with hash -414082333, now seen corresponding path program 1 times [2019-11-25 08:56:56,324 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-25 08:56:56,324 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1326561892] [2019-11-25 08:56:56,324 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_143e88ff-02fb-43dc-84bd-a758d9e1d09d/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 08:56:56,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:56:56,438 INFO L255 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 7 conjunts are in the unsatisfiable core [2019-11-25 08:56:56,439 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:56:56,453 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 08:56:56,453 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-25 08:56:56,482 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 08:56:56,482 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1326561892] [2019-11-25 08:56:56,482 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:56:56,482 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2019-11-25 08:56:56,483 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978217408] [2019-11-25 08:56:56,483 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-25 08:56:56,483 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-25 08:56:56,483 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-25 08:56:56,484 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-25 08:56:56,484 INFO L87 Difference]: Start difference. First operand 30 states and 37 transitions. Second operand 4 states. [2019-11-25 08:56:56,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:56:56,499 INFO L93 Difference]: Finished difference Result 40 states and 47 transitions. [2019-11-25 08:56:56,499 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-25 08:56:56,500 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2019-11-25 08:56:56,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:56:56,500 INFO L225 Difference]: With dead ends: 40 [2019-11-25 08:56:56,500 INFO L226 Difference]: Without dead ends: 30 [2019-11-25 08:56:56,501 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 08:56:56,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2019-11-25 08:56:56,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2019-11-25 08:56:56,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2019-11-25 08:56:56,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 36 transitions. [2019-11-25 08:56:56,505 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 36 transitions. Word has length 18 [2019-11-25 08:56:56,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:56:56,506 INFO L462 AbstractCegarLoop]: Abstraction has 30 states and 36 transitions. [2019-11-25 08:56:56,506 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-25 08:56:56,506 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 36 transitions. [2019-11-25 08:56:56,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-11-25 08:56:56,506 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:56:56,507 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 08:56:56,719 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2019-11-25 08:56:56,719 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:56:56,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:56:56,720 INFO L82 PathProgramCache]: Analyzing trace with hash -356824031, now seen corresponding path program 1 times [2019-11-25 08:56:56,720 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-25 08:56:56,720 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1706557306] [2019-11-25 08:56:56,720 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_143e88ff-02fb-43dc-84bd-a758d9e1d09d/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 08:56:56,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:56:56,826 INFO L255 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-25 08:56:56,827 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:56:56,876 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 08:56:56,876 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-25 08:56:56,877 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-25 08:56:56,947 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 08:56:56,947 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1706557306] [2019-11-25 08:56:56,947 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:56:56,947 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 9 [2019-11-25 08:56:56,948 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326031585] [2019-11-25 08:56:56,948 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-25 08:56:56,948 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-25 08:56:56,949 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-25 08:56:56,949 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2019-11-25 08:56:56,949 INFO L87 Difference]: Start difference. First operand 30 states and 36 transitions. Second operand 9 states. [2019-11-25 08:56:57,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:56:57,064 INFO L93 Difference]: Finished difference Result 42 states and 47 transitions. [2019-11-25 08:56:57,064 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-25 08:56:57,064 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 18 [2019-11-25 08:56:57,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:56:57,065 INFO L225 Difference]: With dead ends: 42 [2019-11-25 08:56:57,065 INFO L226 Difference]: Without dead ends: 39 [2019-11-25 08:56:57,066 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 08:56:57,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2019-11-25 08:56:57,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 32. [2019-11-25 08:56:57,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2019-11-25 08:56:57,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 38 transitions. [2019-11-25 08:56:57,070 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 38 transitions. Word has length 18 [2019-11-25 08:56:57,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:56:57,071 INFO L462 AbstractCegarLoop]: Abstraction has 32 states and 38 transitions. [2019-11-25 08:56:57,074 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-25 08:56:57,074 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 38 transitions. [2019-11-25 08:56:57,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-11-25 08:56:57,075 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:56:57,075 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 08:56:57,276 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 mathsat -unsat_core_generation=3 [2019-11-25 08:56:57,276 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:56:57,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:56:57,276 INFO L82 PathProgramCache]: Analyzing trace with hash -208358251, now seen corresponding path program 1 times [2019-11-25 08:56:57,277 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-25 08:56:57,277 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [652433280] [2019-11-25 08:56:57,277 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_143e88ff-02fb-43dc-84bd-a758d9e1d09d/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 08:56:57,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:56:57,363 INFO L255 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 9 conjunts are in the unsatisfiable core [2019-11-25 08:56:57,364 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:56:57,400 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 08:56:57,401 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-25 08:56:57,477 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 08:56:57,478 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [652433280] [2019-11-25 08:56:57,478 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:56:57,478 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2019-11-25 08:56:57,479 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786652101] [2019-11-25 08:56:57,479 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-25 08:56:57,479 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-25 08:56:57,480 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-25 08:56:57,480 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2019-11-25 08:56:57,480 INFO L87 Difference]: Start difference. First operand 32 states and 38 transitions. Second operand 8 states. [2019-11-25 08:56:57,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:56:57,586 INFO L93 Difference]: Finished difference Result 45 states and 50 transitions. [2019-11-25 08:56:57,587 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-25 08:56:57,587 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2019-11-25 08:56:57,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:56:57,588 INFO L225 Difference]: With dead ends: 45 [2019-11-25 08:56:57,588 INFO L226 Difference]: Without dead ends: 27 [2019-11-25 08:56:57,589 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 08:56:57,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2019-11-25 08:56:57,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2019-11-25 08:56:57,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2019-11-25 08:56:57,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions. [2019-11-25 08:56:57,593 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 28 transitions. Word has length 19 [2019-11-25 08:56:57,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:56:57,593 INFO L462 AbstractCegarLoop]: Abstraction has 27 states and 28 transitions. [2019-11-25 08:56:57,593 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-25 08:56:57,594 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 28 transitions. [2019-11-25 08:56:57,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-11-25 08:56:57,594 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:56:57,594 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 08:56:57,811 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 mathsat -unsat_core_generation=3 [2019-11-25 08:56:57,812 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:56:57,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:56:57,812 INFO L82 PathProgramCache]: Analyzing trace with hash -1524231306, now seen corresponding path program 1 times [2019-11-25 08:56:57,813 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-25 08:56:57,813 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [932163473] [2019-11-25 08:56:57,813 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_143e88ff-02fb-43dc-84bd-a758d9e1d09d/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 08:56:57,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:56:58,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:56:58,140 INFO L174 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2019-11-25 08:56:58,141 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-25 08:56:58,341 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 mathsat -unsat_core_generation=3 [2019-11-25 08:56:58,379 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 08:56:58 BoogieIcfgContainer [2019-11-25 08:56:58,379 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-25 08:56:58,379 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-25 08:56:58,380 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-25 08:56:58,380 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-25 08:56:58,380 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:56:53" (3/4) ... [2019-11-25 08:56:58,382 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-25 08:56:58,434 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_143e88ff-02fb-43dc-84bd-a758d9e1d09d/bin/uautomizer/witness.graphml [2019-11-25 08:56:58,434 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-25 08:56:58,436 INFO L168 Benchmark]: Toolchain (without parser) took 5629.97 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 161.5 MB). Free memory was 960.4 MB in the beginning and 907.5 MB in the end (delta: 52.9 MB). Peak memory consumption was 214.4 MB. Max. memory is 11.5 GB. [2019-11-25 08:56:58,437 INFO L168 Benchmark]: CDTParser took 0.23 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 08:56:58,437 INFO L168 Benchmark]: CACSL2BoogieTranslator took 340.11 ms. Allocated memory is still 1.0 GB. Free memory was 960.4 MB in the beginning and 944.3 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 11.5 GB. [2019-11-25 08:56:58,438 INFO L168 Benchmark]: Boogie Procedure Inliner took 124.84 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 161.5 MB). Free memory was 944.3 MB in the beginning and 1.2 GB in the end (delta: -207.3 MB). Peak memory consumption was 9.9 MB. Max. memory is 11.5 GB. [2019-11-25 08:56:58,438 INFO L168 Benchmark]: Boogie Preprocessor took 37.36 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-25 08:56:58,439 INFO L168 Benchmark]: RCFGBuilder took 504.96 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 26.2 MB). Peak memory consumption was 26.2 MB. Max. memory is 11.5 GB. [2019-11-25 08:56:58,439 INFO L168 Benchmark]: TraceAbstraction took 4563.17 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 907.5 MB in the end (delta: 217.9 MB). Peak memory consumption was 217.9 MB. Max. memory is 11.5 GB. [2019-11-25 08:56:58,440 INFO L168 Benchmark]: Witness Printer took 55.17 ms. Allocated memory is still 1.2 GB. Free memory is still 907.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-25 08:56:58,442 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 1.0 GB. Free memory is still 987.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 340.11 ms. Allocated memory is still 1.0 GB. Free memory was 960.4 MB in the beginning and 944.3 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 124.84 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 161.5 MB). Free memory was 944.3 MB in the beginning and 1.2 GB in the end (delta: -207.3 MB). Peak memory consumption was 9.9 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 37.36 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 504.96 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 26.2 MB). Peak memory consumption was 26.2 MB. Max. memory is 11.5 GB. * TraceAbstraction took 4563.17 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 907.5 MB in the end (delta: 217.9 MB). Peak memory consumption was 217.9 MB. Max. memory is 11.5 GB. * Witness Printer took 55.17 ms. Allocated memory is still 1.2 GB. Free memory is still 907.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 80]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L74] double x = -0.0; [L75] double y = 0.0; [L19] __uint32_t msw, lsw; [L22] ieee_double_shape_type ew_u; [L23] ew_u.value = (x) [L24] EXPR ew_u.parts.msw [L24] (msw) = ew_u.parts.msw [L25] EXPR ew_u.parts.lsw [L25] (lsw) = ew_u.parts.lsw [L28-L29] COND TRUE (msw == 0x00000000 && lsw == 0x00000000) || (msw == 0x80000000 && lsw == 0x00000000) [L30] return 2; [L46] COND FALSE !(__fpclassify_double(x) == 0) [L19] __uint32_t msw, lsw; [L22] ieee_double_shape_type ew_u; [L23] ew_u.value = (x) [L24] EXPR ew_u.parts.msw [L24] (msw) = ew_u.parts.msw [L25] EXPR ew_u.parts.lsw [L25] (lsw) = ew_u.parts.lsw [L28-L29] COND TRUE (msw == 0x00000000 && lsw == 0x00000000) || (msw == 0x80000000 && lsw == 0x00000000) [L30] return 2; [L48] COND FALSE !(__fpclassify_double(y) == 0) [L51] EXPR x < y ? x : y [L51] return x < y ? x : y; [L76] double res = fmin_double(x, y); [L79] EXPR res == -0.0 && __signbit_double(res) == 1 [L55] __uint32_t msw; [L58] ieee_double_shape_type gh_u; [L59] gh_u.value = (x) [L60] EXPR gh_u.parts.msw [L60] (msw) = gh_u.parts.msw [L63] return (msw & 0x80000000) != 0; [L79] EXPR res == -0.0 && __signbit_double(res) == 1 [L79] COND TRUE !(res == -0.0 && __signbit_double(res) == 1) [L80] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 32 locations, 1 error locations. Result: UNSAFE, OverallTime: 4.5s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 1.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 234 SDtfs, 290 SDslu, 362 SDs, 0 SdLazy, 112 SolverSat, 21 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 209 GetRequests, 168 SyntacticMatches, 3 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=32occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 7 MinimizatonAttempts, 61 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 128 NumberOfCodeBlocks, 128 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 198 ConstructedInterpolants, 15 QuantifiedInterpolants, 10764 SizeOfPredicates, 27 NumberOfNonLiveVariables, 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...