./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 678e0110 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_fe1920e8-120f-4cc7-828f-0081645d78f4/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_fe1920e8-120f-4cc7-828f-0081645d78f4/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_fe1920e8-120f-4cc7-828f-0081645d78f4/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_fe1920e8-120f-4cc7-828f-0081645d78f4/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1232b.c -s /tmp/vcloud-vcloud-master/worker/run_dir_fe1920e8-120f-4cc7-828f-0081645d78f4/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_fe1920e8-120f-4cc7-828f-0081645d78f4/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_fe1920e8-120f-4cc7-828f-0081645d78f4/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_fe1920e8-120f-4cc7-828f-0081645d78f4/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_fe1920e8-120f-4cc7-828f-0081645d78f4/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_fe1920e8-120f-4cc7-828f-0081645d78f4/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1232b.c -s /tmp/vcloud-vcloud-master/worker/run_dir_fe1920e8-120f-4cc7-828f-0081645d78f4/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_fe1920e8-120f-4cc7-828f-0081645d78f4/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 0.1.24-678e011 [2019-11-20 03:42:35,853 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-20 03:42:35,856 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-20 03:42:35,875 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-20 03:42:35,876 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-20 03:42:35,878 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-20 03:42:35,880 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-20 03:42:35,890 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-20 03:42:35,895 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-20 03:42:35,900 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-20 03:42:35,901 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-20 03:42:35,903 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-20 03:42:35,903 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-20 03:42:35,906 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-20 03:42:35,907 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-20 03:42:35,908 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-20 03:42:35,910 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-20 03:42:35,910 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-20 03:42:35,913 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-20 03:42:35,918 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-20 03:42:35,922 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-20 03:42:35,924 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-20 03:42:35,927 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-20 03:42:35,928 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-20 03:42:35,932 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-20 03:42:35,932 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-20 03:42:35,932 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-20 03:42:35,934 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-20 03:42:35,935 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-20 03:42:35,936 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-20 03:42:35,936 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-20 03:42:35,937 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-20 03:42:35,938 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-20 03:42:35,939 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-20 03:42:35,940 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-20 03:42:35,940 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-20 03:42:35,941 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-20 03:42:35,941 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-20 03:42:35,941 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-20 03:42:35,942 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-20 03:42:35,943 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-20 03:42:35,944 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_fe1920e8-120f-4cc7-828f-0081645d78f4/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-20 03:42:35,975 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-20 03:42:35,986 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-20 03:42:35,988 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-20 03:42:35,988 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-20 03:42:35,988 INFO L138 SettingsManager]: * Use SBE=true [2019-11-20 03:42:35,989 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-20 03:42:35,989 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-20 03:42:35,989 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-20 03:42:35,990 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-20 03:42:35,990 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-20 03:42:35,990 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-20 03:42:35,990 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-20 03:42:35,991 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-20 03:42:35,991 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-20 03:42:35,991 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-20 03:42:35,991 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-20 03:42:35,992 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-20 03:42:35,992 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-20 03:42:35,992 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-20 03:42:35,993 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-20 03:42:35,993 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-20 03:42:35,993 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-20 03:42:35,993 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-20 03:42:35,994 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-20 03:42:35,994 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-20 03:42:35,994 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-20 03:42:35,994 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-20 03:42:35,995 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-20 03:42:35,995 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_fe1920e8-120f-4cc7-828f-0081645d78f4/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 [2019-11-20 03:42:36,172 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-20 03:42:36,184 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-20 03:42:36,187 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-20 03:42:36,189 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-20 03:42:36,189 INFO L275 PluginConnector]: CDTParser initialized [2019-11-20 03:42:36,190 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_fe1920e8-120f-4cc7-828f-0081645d78f4/bin/uautomizer/../../sv-benchmarks/c/float-newlib/double_req_bl_1232b.c [2019-11-20 03:42:36,250 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_fe1920e8-120f-4cc7-828f-0081645d78f4/bin/uautomizer/data/3aac8bb08/1c931f7142f94fbcad1fbc09856ee9c2/FLAG6f89e926e [2019-11-20 03:42:36,689 INFO L306 CDTParser]: Found 1 translation units. [2019-11-20 03:42:36,691 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_fe1920e8-120f-4cc7-828f-0081645d78f4/sv-benchmarks/c/float-newlib/double_req_bl_1232b.c [2019-11-20 03:42:36,699 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_fe1920e8-120f-4cc7-828f-0081645d78f4/bin/uautomizer/data/3aac8bb08/1c931f7142f94fbcad1fbc09856ee9c2/FLAG6f89e926e [2019-11-20 03:42:37,077 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_fe1920e8-120f-4cc7-828f-0081645d78f4/bin/uautomizer/data/3aac8bb08/1c931f7142f94fbcad1fbc09856ee9c2 [2019-11-20 03:42:37,079 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-20 03:42:37,081 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-20 03:42:37,082 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-20 03:42:37,082 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-20 03:42:37,085 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-20 03:42:37,086 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 03:42:37" (1/1) ... [2019-11-20 03:42:37,089 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e95bc24 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 03:42:37, skipping insertion in model container [2019-11-20 03:42:37,089 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 03:42:37" (1/1) ... [2019-11-20 03:42:37,100 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-20 03:42:37,126 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-20 03:42:37,477 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 03:42:37,480 INFO L188 MainTranslator]: Completed pre-run [2019-11-20 03:42:37,514 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 03:42:37,538 INFO L192 MainTranslator]: Completed translation [2019-11-20 03:42:37,540 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 03:42:37 WrapperNode [2019-11-20 03:42:37,540 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-20 03:42:37,542 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-20 03:42:37,542 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-20 03:42:37,542 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-20 03:42:37,552 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 03:42:37" (1/1) ... [2019-11-20 03:42:37,561 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 03:42:37" (1/1) ... [2019-11-20 03:42:37,592 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-20 03:42:37,593 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-20 03:42:37,593 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-20 03:42:37,593 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-20 03:42:37,601 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 03:42:37" (1/1) ... [2019-11-20 03:42:37,602 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 03:42:37" (1/1) ... [2019-11-20 03:42:37,605 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 03:42:37" (1/1) ... [2019-11-20 03:42:37,605 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 03:42:37" (1/1) ... [2019-11-20 03:42:37,616 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 03:42:37" (1/1) ... [2019-11-20 03:42:37,621 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 03:42:37" (1/1) ... [2019-11-20 03:42:37,624 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 03:42:37" (1/1) ... [2019-11-20 03:42:37,628 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-20 03:42:37,628 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-20 03:42:37,628 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-20 03:42:37,629 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-20 03:42:37,630 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 03:42:37" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fe1920e8-120f-4cc7-828f-0081645d78f4/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 [2019-11-20 03:42:37,695 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-20 03:42:37,695 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2019-11-20 03:42:37,695 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-20 03:42:37,696 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-20 03:42:37,696 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-20 03:42:37,696 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-20 03:42:38,229 INFO L280 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-20 03:42:38,230 INFO L285 CfgBuilder]: Removed 18 assume(true) statements. [2019-11-20 03:42:38,231 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 03:42:38 BoogieIcfgContainer [2019-11-20 03:42:38,231 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-20 03:42:38,232 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-20 03:42:38,232 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-20 03:42:38,236 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-20 03:42:38,236 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 03:42:37" (1/3) ... [2019-11-20 03:42:38,237 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41f8ac6e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 03:42:38, skipping insertion in model container [2019-11-20 03:42:38,237 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 03:42:37" (2/3) ... [2019-11-20 03:42:38,238 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41f8ac6e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 03:42:38, skipping insertion in model container [2019-11-20 03:42:38,238 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 03:42:38" (3/3) ... [2019-11-20 03:42:38,244 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1232b.c [2019-11-20 03:42:38,257 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-20 03:42:38,269 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-20 03:42:38,278 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-20 03:42:38,304 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-20 03:42:38,304 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-20 03:42:38,305 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-20 03:42:38,305 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-20 03:42:38,305 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-20 03:42:38,305 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-20 03:42:38,306 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-20 03:42:38,306 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-20 03:42:38,321 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2019-11-20 03:42:38,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-20 03:42:38,327 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 03:42:38,328 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 03:42:38,328 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 03:42:38,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 03:42:38,333 INFO L82 PathProgramCache]: Analyzing trace with hash -958075201, now seen corresponding path program 1 times [2019-11-20 03:42:38,341 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 03:42:38,341 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167029623] [2019-11-20 03:42:38,342 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 03:42:38,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 03:42:38,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 03:42:38,446 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167029623] [2019-11-20 03:42:38,447 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-20 03:42:38,447 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-20 03:42:38,448 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068835361] [2019-11-20 03:42:38,452 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-20 03:42:38,453 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 03:42:38,468 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-20 03:42:38,469 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-20 03:42:38,471 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 2 states. [2019-11-20 03:42:38,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 03:42:38,494 INFO L93 Difference]: Finished difference Result 62 states and 98 transitions. [2019-11-20 03:42:38,494 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-20 03:42:38,496 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2019-11-20 03:42:38,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 03:42:38,509 INFO L225 Difference]: With dead ends: 62 [2019-11-20 03:42:38,509 INFO L226 Difference]: Without dead ends: 29 [2019-11-20 03:42:38,512 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 [2019-11-20 03:42:38,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2019-11-20 03:42:38,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2019-11-20 03:42:38,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2019-11-20 03:42:38,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 40 transitions. [2019-11-20 03:42:38,546 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 40 transitions. Word has length 10 [2019-11-20 03:42:38,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 03:42:38,546 INFO L462 AbstractCegarLoop]: Abstraction has 29 states and 40 transitions. [2019-11-20 03:42:38,547 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-20 03:42:38,547 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 40 transitions. [2019-11-20 03:42:38,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-20 03:42:38,548 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 03:42:38,548 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 03:42:38,548 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 03:42:38,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 03:42:38,549 INFO L82 PathProgramCache]: Analyzing trace with hash 1001584898, now seen corresponding path program 1 times [2019-11-20 03:42:38,549 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 03:42:38,549 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [888399165] [2019-11-20 03:42:38,550 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 03:42:38,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 03:42:38,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 03:42:38,669 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [888399165] [2019-11-20 03:42:38,670 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-20 03:42:38,670 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-20 03:42:38,670 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505661391] [2019-11-20 03:42:38,672 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-20 03:42:38,672 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 03:42:38,673 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-20 03:42:38,673 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-20 03:42:38,673 INFO L87 Difference]: Start difference. First operand 29 states and 40 transitions. Second operand 4 states. [2019-11-20 03:42:38,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 03:42:38,746 INFO L93 Difference]: Finished difference Result 53 states and 67 transitions. [2019-11-20 03:42:38,747 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-20 03:42:38,747 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2019-11-20 03:42:38,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 03:42:38,749 INFO L225 Difference]: With dead ends: 53 [2019-11-20 03:42:38,749 INFO L226 Difference]: Without dead ends: 44 [2019-11-20 03:42:38,750 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 [2019-11-20 03:42:38,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2019-11-20 03:42:38,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 31. [2019-11-20 03:42:38,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2019-11-20 03:42:38,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 42 transitions. [2019-11-20 03:42:38,758 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 42 transitions. Word has length 11 [2019-11-20 03:42:38,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 03:42:38,759 INFO L462 AbstractCegarLoop]: Abstraction has 31 states and 42 transitions. [2019-11-20 03:42:38,759 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-20 03:42:38,759 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 42 transitions. [2019-11-20 03:42:38,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-11-20 03:42:38,760 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 03:42:38,760 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 03:42:38,761 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 03:42:38,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 03:42:38,761 INFO L82 PathProgramCache]: Analyzing trace with hash -555760345, now seen corresponding path program 1 times [2019-11-20 03:42:38,762 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 03:42:38,762 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [424386683] [2019-11-20 03:42:38,762 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 03:42:38,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 03:42:38,839 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 03:42:38,839 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [424386683] [2019-11-20 03:42:38,840 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-20 03:42:38,840 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-20 03:42:38,840 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628988839] [2019-11-20 03:42:38,840 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-20 03:42:38,841 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 03:42:38,841 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-20 03:42:38,841 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-20 03:42:38,842 INFO L87 Difference]: Start difference. First operand 31 states and 42 transitions. Second operand 4 states. [2019-11-20 03:42:38,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 03:42:38,920 INFO L93 Difference]: Finished difference Result 55 states and 69 transitions. [2019-11-20 03:42:38,923 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-20 03:42:38,923 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2019-11-20 03:42:38,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 03:42:38,924 INFO L225 Difference]: With dead ends: 55 [2019-11-20 03:42:38,924 INFO L226 Difference]: Without dead ends: 46 [2019-11-20 03:42:38,925 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 [2019-11-20 03:42:38,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2019-11-20 03:42:38,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 31. [2019-11-20 03:42:38,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2019-11-20 03:42:38,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 42 transitions. [2019-11-20 03:42:38,938 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 42 transitions. Word has length 14 [2019-11-20 03:42:38,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 03:42:38,939 INFO L462 AbstractCegarLoop]: Abstraction has 31 states and 42 transitions. [2019-11-20 03:42:38,939 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-20 03:42:38,939 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 42 transitions. [2019-11-20 03:42:38,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-11-20 03:42:38,940 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 03:42:38,940 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 03:42:38,941 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 03:42:38,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 03:42:38,941 INFO L82 PathProgramCache]: Analyzing trace with hash 1219247017, now seen corresponding path program 1 times [2019-11-20 03:42:38,941 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 03:42:38,942 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [313823786] [2019-11-20 03:42:38,942 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 03:42:38,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 03:42:39,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 03:42:39,048 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 03:42:39,051 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-20 03:42:39,079 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 03:42:39 BoogieIcfgContainer [2019-11-20 03:42:39,080 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-20 03:42:39,080 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-20 03:42:39,080 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-20 03:42:39,081 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-20 03:42:39,081 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 03:42:38" (3/4) ... [2019-11-20 03:42:39,085 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-11-20 03:42:39,085 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-20 03:42:39,088 INFO L168 Benchmark]: Toolchain (without parser) took 2006.47 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 161.5 MB). Free memory was 950.1 MB in the beginning and 1.1 GB in the end (delta: -125.7 MB). Peak memory consumption was 35.8 MB. Max. memory is 11.5 GB. [2019-11-20 03:42:39,089 INFO L168 Benchmark]: CDTParser took 0.27 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. [2019-11-20 03:42:39,090 INFO L168 Benchmark]: CACSL2BoogieTranslator took 459.16 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 161.5 MB). Free memory was 950.1 MB in the beginning and 1.2 GB in the end (delta: -202.9 MB). Peak memory consumption was 22.8 MB. Max. memory is 11.5 GB. [2019-11-20 03:42:39,090 INFO L168 Benchmark]: Boogie Procedure Inliner took 50.60 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. [2019-11-20 03:42:39,091 INFO L168 Benchmark]: Boogie Preprocessor took 35.24 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: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. [2019-11-20 03:42:39,092 INFO L168 Benchmark]: RCFGBuilder took 603.02 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: 29.9 MB). Peak memory consumption was 29.9 MB. Max. memory is 11.5 GB. [2019-11-20 03:42:39,093 INFO L168 Benchmark]: TraceAbstraction took 847.87 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: 40.6 MB). Peak memory consumption was 40.6 MB. Max. memory is 11.5 GB. [2019-11-20 03:42:39,093 INFO L168 Benchmark]: Witness Printer took 5.40 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. [2019-11-20 03:42:39,097 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 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 459.16 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 161.5 MB). Free memory was 950.1 MB in the beginning and 1.2 GB in the end (delta: -202.9 MB). Peak memory consumption was 22.8 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 50.60 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 35.24 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: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. * RCFGBuilder took 603.02 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: 29.9 MB). Peak memory consumption was 29.9 MB. Max. memory is 11.5 GB. * TraceAbstraction took 847.87 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: 40.6 MB). Peak memory consumption was 40.6 MB. Max. memory is 11.5 GB. * Witness Printer took 5.40 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: 0.7s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.2s, 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, 0.1s 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 0.1.24-678e011 [2019-11-20 03:42:41,365 INFO L177 SettingsManager]: Resetting all preferences to default values... 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[2019-11-20 03:42:41,383 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-20 03:42:41,384 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-20 03:42:41,386 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-20 03:42:41,400 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-20 03:42:41,402 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-20 03:42:41,405 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-20 03:42:41,407 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-20 03:42:41,409 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-20 03:42:41,410 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-20 03:42:41,413 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-20 03:42:41,414 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-20 03:42:41,417 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-20 03:42:41,418 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-20 03:42:41,421 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-20 03:42:41,424 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-20 03:42:41,429 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-20 03:42:41,433 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-20 03:42:41,436 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-20 03:42:41,439 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-20 03:42:41,441 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-20 03:42:41,446 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-20 03:42:41,446 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-20 03:42:41,446 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-20 03:42:41,448 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-20 03:42:41,449 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-20 03:42:41,450 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-20 03:42:41,451 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-20 03:42:41,452 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-20 03:42:41,452 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-20 03:42:41,453 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-20 03:42:41,455 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-20 03:42:41,455 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-20 03:42:41,456 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-20 03:42:41,456 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-20 03:42:41,457 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-20 03:42:41,458 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-20 03:42:41,459 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-20 03:42:41,460 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_fe1920e8-120f-4cc7-828f-0081645d78f4/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2019-11-20 03:42:41,489 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-20 03:42:41,490 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-20 03:42:41,491 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-20 03:42:41,491 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-20 03:42:41,491 INFO L138 SettingsManager]: * Use SBE=true [2019-11-20 03:42:41,492 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-20 03:42:41,492 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-20 03:42:41,492 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-20 03:42:41,493 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-20 03:42:41,493 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-20 03:42:41,493 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-20 03:42:41,493 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-20 03:42:41,494 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-11-20 03:42:41,494 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-11-20 03:42:41,494 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-20 03:42:41,494 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-20 03:42:41,495 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-20 03:42:41,495 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-20 03:42:41,495 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-20 03:42:41,496 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-20 03:42:41,496 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-20 03:42:41,496 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-20 03:42:41,497 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-20 03:42:41,497 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-20 03:42:41,497 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-20 03:42:41,498 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-20 03:42:41,498 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2019-11-20 03:42:41,498 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-11-20 03:42:41,499 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-20 03:42:41,499 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-20 03:42:41,499 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_fe1920e8-120f-4cc7-828f-0081645d78f4/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 [2019-11-20 03:42:41,813 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-20 03:42:41,826 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-20 03:42:41,830 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-20 03:42:41,831 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-20 03:42:41,832 INFO L275 PluginConnector]: CDTParser initialized [2019-11-20 03:42:41,833 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_fe1920e8-120f-4cc7-828f-0081645d78f4/bin/uautomizer/../../sv-benchmarks/c/float-newlib/double_req_bl_1232b.c [2019-11-20 03:42:41,895 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_fe1920e8-120f-4cc7-828f-0081645d78f4/bin/uautomizer/data/69f100578/67fc160ee4ff41cda3f8e9401cea8d63/FLAG75452d84e [2019-11-20 03:42:42,358 INFO L306 CDTParser]: Found 1 translation units. [2019-11-20 03:42:42,359 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_fe1920e8-120f-4cc7-828f-0081645d78f4/sv-benchmarks/c/float-newlib/double_req_bl_1232b.c [2019-11-20 03:42:42,369 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_fe1920e8-120f-4cc7-828f-0081645d78f4/bin/uautomizer/data/69f100578/67fc160ee4ff41cda3f8e9401cea8d63/FLAG75452d84e [2019-11-20 03:42:42,785 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_fe1920e8-120f-4cc7-828f-0081645d78f4/bin/uautomizer/data/69f100578/67fc160ee4ff41cda3f8e9401cea8d63 [2019-11-20 03:42:42,789 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-20 03:42:42,790 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-20 03:42:42,793 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-20 03:42:42,793 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-20 03:42:42,797 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-20 03:42:42,798 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 03:42:42" (1/1) ... [2019-11-20 03:42:42,801 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3fe7f9a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 03:42:42, skipping insertion in model container [2019-11-20 03:42:42,802 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 03:42:42" (1/1) ... [2019-11-20 03:42:42,810 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-20 03:42:42,837 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-20 03:42:43,093 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 03:42:43,100 INFO L188 MainTranslator]: Completed pre-run [2019-11-20 03:42:43,134 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 03:42:43,238 INFO L192 MainTranslator]: Completed translation [2019-11-20 03:42:43,238 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 03:42:43 WrapperNode [2019-11-20 03:42:43,238 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-20 03:42:43,239 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-20 03:42:43,239 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-20 03:42:43,240 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-20 03:42:43,249 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 03:42:43" (1/1) ... [2019-11-20 03:42:43,260 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 03:42:43" (1/1) ... [2019-11-20 03:42:43,288 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-20 03:42:43,289 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-20 03:42:43,289 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-20 03:42:43,289 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-20 03:42:43,303 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 03:42:43" (1/1) ... [2019-11-20 03:42:43,304 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 03:42:43" (1/1) ... [2019-11-20 03:42:43,312 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 03:42:43" (1/1) ... [2019-11-20 03:42:43,313 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 03:42:43" (1/1) ... [2019-11-20 03:42:43,324 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 03:42:43" (1/1) ... [2019-11-20 03:42:43,330 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 03:42:43" (1/1) ... [2019-11-20 03:42:43,333 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 03:42:43" (1/1) ... [2019-11-20 03:42:43,338 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-20 03:42:43,338 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-20 03:42:43,338 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-20 03:42:43,339 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-20 03:42:43,340 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 03:42:43" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fe1920e8-120f-4cc7-828f-0081645d78f4/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 [2019-11-20 03:42:43,400 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2019-11-20 03:42:43,400 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-20 03:42:43,400 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2019-11-20 03:42:43,401 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-20 03:42:43,401 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-20 03:42:43,401 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-20 03:42:43,942 INFO L280 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-20 03:42:43,942 INFO L285 CfgBuilder]: Removed 18 assume(true) statements. [2019-11-20 03:42:43,943 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 03:42:43 BoogieIcfgContainer [2019-11-20 03:42:43,944 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-20 03:42:43,945 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-20 03:42:43,945 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-20 03:42:43,948 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-20 03:42:43,948 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 03:42:42" (1/3) ... [2019-11-20 03:42:43,949 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28d3e822 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 03:42:43, skipping insertion in model container [2019-11-20 03:42:43,949 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 03:42:43" (2/3) ... [2019-11-20 03:42:43,950 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28d3e822 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 03:42:43, skipping insertion in model container [2019-11-20 03:42:43,950 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 03:42:43" (3/3) ... [2019-11-20 03:42:43,952 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1232b.c [2019-11-20 03:42:43,960 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-20 03:42:43,968 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-20 03:42:43,978 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-20 03:42:44,003 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-20 03:42:44,004 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-20 03:42:44,004 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-20 03:42:44,005 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-20 03:42:44,005 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-20 03:42:44,005 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-20 03:42:44,005 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-20 03:42:44,006 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-20 03:42:44,022 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2019-11-20 03:42:44,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-20 03:42:44,029 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 03:42:44,030 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 03:42:44,031 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 03:42:44,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 03:42:44,037 INFO L82 PathProgramCache]: Analyzing trace with hash -958075201, now seen corresponding path program 1 times [2019-11-20 03:42:44,049 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 03:42:44,050 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [177776554] [2019-11-20 03:42:44,050 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fe1920e8-120f-4cc7-828f-0081645d78f4/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 [2019-11-20 03:42:44,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 03:42:44,159 INFO L255 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 1 conjunts are in the unsatisfiable core [2019-11-20 03:42:44,164 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 03:42:44,180 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 03:42:44,180 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 03:42:44,185 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 03:42:44,187 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [177776554] [2019-11-20 03:42:44,188 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 03:42:44,189 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2019-11-20 03:42:44,190 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509227712] [2019-11-20 03:42:44,195 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-20 03:42:44,195 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 03:42:44,210 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-20 03:42:44,212 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-20 03:42:44,214 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 2 states. [2019-11-20 03:42:44,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 03:42:44,237 INFO L93 Difference]: Finished difference Result 62 states and 98 transitions. [2019-11-20 03:42:44,238 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-20 03:42:44,239 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2019-11-20 03:42:44,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 03:42:44,250 INFO L225 Difference]: With dead ends: 62 [2019-11-20 03:42:44,250 INFO L226 Difference]: Without dead ends: 29 [2019-11-20 03:42:44,253 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 [2019-11-20 03:42:44,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2019-11-20 03:42:44,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2019-11-20 03:42:44,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2019-11-20 03:42:44,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 40 transitions. [2019-11-20 03:42:44,288 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 40 transitions. Word has length 10 [2019-11-20 03:42:44,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 03:42:44,289 INFO L462 AbstractCegarLoop]: Abstraction has 29 states and 40 transitions. [2019-11-20 03:42:44,289 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-20 03:42:44,289 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 40 transitions. [2019-11-20 03:42:44,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-20 03:42:44,290 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 03:42:44,291 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 03:42:44,499 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2019-11-20 03:42:44,500 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 03:42:44,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 03:42:44,500 INFO L82 PathProgramCache]: Analyzing trace with hash 1001584898, now seen corresponding path program 1 times [2019-11-20 03:42:44,501 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 03:42:44,501 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [311688956] [2019-11-20 03:42:44,502 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fe1920e8-120f-4cc7-828f-0081645d78f4/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 [2019-11-20 03:42:44,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 03:42:44,639 INFO L255 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-20 03:42:44,640 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 03:42:44,676 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 03:42:44,678 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 03:42:44,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 03:42:44,718 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [311688956] [2019-11-20 03:42:44,719 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 03:42:44,719 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2019-11-20 03:42:44,719 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868191266] [2019-11-20 03:42:44,721 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-20 03:42:44,721 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 03:42:44,721 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-20 03:42:44,722 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-20 03:42:44,722 INFO L87 Difference]: Start difference. First operand 29 states and 40 transitions. Second operand 6 states. [2019-11-20 03:42:44,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 03:42:44,948 INFO L93 Difference]: Finished difference Result 68 states and 85 transitions. [2019-11-20 03:42:44,948 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-20 03:42:44,948 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2019-11-20 03:42:44,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 03:42:44,950 INFO L225 Difference]: With dead ends: 68 [2019-11-20 03:42:44,950 INFO L226 Difference]: Without dead ends: 59 [2019-11-20 03:42:44,951 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 [2019-11-20 03:42:44,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2019-11-20 03:42:44,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 31. [2019-11-20 03:42:44,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2019-11-20 03:42:44,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 42 transitions. [2019-11-20 03:42:44,960 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 42 transitions. Word has length 11 [2019-11-20 03:42:44,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 03:42:44,960 INFO L462 AbstractCegarLoop]: Abstraction has 31 states and 42 transitions. [2019-11-20 03:42:44,961 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-20 03:42:44,961 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 42 transitions. [2019-11-20 03:42:44,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-11-20 03:42:44,962 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 03:42:44,962 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 03:42:45,175 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2019-11-20 03:42:45,176 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 03:42:45,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 03:42:45,176 INFO L82 PathProgramCache]: Analyzing trace with hash 1219247017, now seen corresponding path program 1 times [2019-11-20 03:42:45,177 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 03:42:45,178 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1418116220] [2019-11-20 03:42:45,178 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fe1920e8-120f-4cc7-828f-0081645d78f4/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 [2019-11-20 03:42:45,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 03:42:45,274 INFO L255 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 9 conjunts are in the unsatisfiable core [2019-11-20 03:42:45,276 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 03:42:45,352 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 03:42:45,352 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 03:42:45,384 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 03:42:45,454 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 03:42:45,454 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1418116220] [2019-11-20 03:42:45,454 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 03:42:45,455 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2019-11-20 03:42:45,455 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894959711] [2019-11-20 03:42:45,455 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-20 03:42:45,456 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 03:42:45,456 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-20 03:42:45,456 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-20 03:42:45,457 INFO L87 Difference]: Start difference. First operand 31 states and 42 transitions. Second operand 6 states. [2019-11-20 03:42:45,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 03:42:45,604 INFO L93 Difference]: Finished difference Result 52 states and 69 transitions. [2019-11-20 03:42:45,606 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-20 03:42:45,607 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2019-11-20 03:42:45,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 03:42:45,608 INFO L225 Difference]: With dead ends: 52 [2019-11-20 03:42:45,608 INFO L226 Difference]: Without dead ends: 28 [2019-11-20 03:42:45,609 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-11-20 03:42:45,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2019-11-20 03:42:45,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2019-11-20 03:42:45,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2019-11-20 03:42:45,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 35 transitions. [2019-11-20 03:42:45,614 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 35 transitions. Word has length 14 [2019-11-20 03:42:45,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 03:42:45,615 INFO L462 AbstractCegarLoop]: Abstraction has 28 states and 35 transitions. [2019-11-20 03:42:45,615 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-20 03:42:45,618 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 35 transitions. [2019-11-20 03:42:45,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-11-20 03:42:45,620 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 03:42:45,621 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 03:42:45,839 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2019-11-20 03:42:45,839 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 03:42:45,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 03:42:45,840 INFO L82 PathProgramCache]: Analyzing trace with hash 1012446717, now seen corresponding path program 1 times [2019-11-20 03:42:45,841 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 03:42:45,841 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [785692058] [2019-11-20 03:42:45,842 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fe1920e8-120f-4cc7-828f-0081645d78f4/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 [2019-11-20 03:42:45,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 03:42:45,973 INFO L255 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-20 03:42:45,975 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 03:42:45,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 03:42:45,996 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 03:42:46,020 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 03:42:46,021 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [785692058] [2019-11-20 03:42:46,021 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 03:42:46,021 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2019-11-20 03:42:46,022 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987590441] [2019-11-20 03:42:46,022 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-20 03:42:46,022 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 03:42:46,023 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-20 03:42:46,023 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-20 03:42:46,023 INFO L87 Difference]: Start difference. First operand 28 states and 35 transitions. Second operand 6 states. [2019-11-20 03:42:46,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 03:42:46,122 INFO L93 Difference]: Finished difference Result 65 states and 76 transitions. [2019-11-20 03:42:46,123 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-20 03:42:46,124 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2019-11-20 03:42:46,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 03:42:46,125 INFO L225 Difference]: With dead ends: 65 [2019-11-20 03:42:46,125 INFO L226 Difference]: Without dead ends: 56 [2019-11-20 03:42:46,125 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 [2019-11-20 03:42:46,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2019-11-20 03:42:46,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 30. [2019-11-20 03:42:46,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2019-11-20 03:42:46,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 37 transitions. [2019-11-20 03:42:46,132 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 37 transitions. Word has length 16 [2019-11-20 03:42:46,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 03:42:46,132 INFO L462 AbstractCegarLoop]: Abstraction has 30 states and 37 transitions. [2019-11-20 03:42:46,133 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-20 03:42:46,133 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 37 transitions. [2019-11-20 03:42:46,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-11-20 03:42:46,134 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 03:42:46,134 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 03:42:46,339 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2019-11-20 03:42:46,340 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 03:42:46,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 03:42:46,340 INFO L82 PathProgramCache]: Analyzing trace with hash -414082333, now seen corresponding path program 1 times [2019-11-20 03:42:46,341 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 03:42:46,341 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1621113332] [2019-11-20 03:42:46,342 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fe1920e8-120f-4cc7-828f-0081645d78f4/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 [2019-11-20 03:42:46,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 03:42:46,485 INFO L255 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 7 conjunts are in the unsatisfiable core [2019-11-20 03:42:46,487 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 03:42:46,510 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 03:42:46,510 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 03:42:46,570 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 03:42:46,570 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1621113332] [2019-11-20 03:42:46,571 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 03:42:46,571 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2019-11-20 03:42:46,571 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56234812] [2019-11-20 03:42:46,572 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-20 03:42:46,572 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 03:42:46,572 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-20 03:42:46,572 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-20 03:42:46,573 INFO L87 Difference]: Start difference. First operand 30 states and 37 transitions. Second operand 4 states. [2019-11-20 03:42:46,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 03:42:46,588 INFO L93 Difference]: Finished difference Result 40 states and 47 transitions. [2019-11-20 03:42:46,589 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-20 03:42:46,589 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2019-11-20 03:42:46,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 03:42:46,590 INFO L225 Difference]: With dead ends: 40 [2019-11-20 03:42:46,590 INFO L226 Difference]: Without dead ends: 30 [2019-11-20 03:42:46,591 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 [2019-11-20 03:42:46,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2019-11-20 03:42:46,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2019-11-20 03:42:46,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2019-11-20 03:42:46,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 36 transitions. [2019-11-20 03:42:46,598 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 36 transitions. Word has length 18 [2019-11-20 03:42:46,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 03:42:46,598 INFO L462 AbstractCegarLoop]: Abstraction has 30 states and 36 transitions. [2019-11-20 03:42:46,598 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-20 03:42:46,598 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 36 transitions. [2019-11-20 03:42:46,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-11-20 03:42:46,599 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 03:42:46,600 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 03:42:46,816 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2019-11-20 03:42:46,817 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 03:42:46,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 03:42:46,817 INFO L82 PathProgramCache]: Analyzing trace with hash -356824031, now seen corresponding path program 1 times [2019-11-20 03:42:46,817 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 03:42:46,818 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1071399575] [2019-11-20 03:42:46,818 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fe1920e8-120f-4cc7-828f-0081645d78f4/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 [2019-11-20 03:42:46,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 03:42:46,955 INFO L255 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-20 03:42:46,957 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 03:42:47,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 03:42:47,008 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 03:42:47,010 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 03:42:47,089 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 03:42:47,089 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1071399575] [2019-11-20 03:42:47,090 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 03:42:47,090 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 9 [2019-11-20 03:42:47,090 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506579664] [2019-11-20 03:42:47,091 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-20 03:42:47,091 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 03:42:47,091 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-20 03:42:47,092 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2019-11-20 03:42:47,092 INFO L87 Difference]: Start difference. First operand 30 states and 36 transitions. Second operand 9 states. [2019-11-20 03:42:47,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 03:42:47,252 INFO L93 Difference]: Finished difference Result 42 states and 47 transitions. [2019-11-20 03:42:47,253 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-20 03:42:47,253 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 18 [2019-11-20 03:42:47,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 03:42:47,254 INFO L225 Difference]: With dead ends: 42 [2019-11-20 03:42:47,254 INFO L226 Difference]: Without dead ends: 39 [2019-11-20 03:42:47,254 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 [2019-11-20 03:42:47,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2019-11-20 03:42:47,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 32. [2019-11-20 03:42:47,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2019-11-20 03:42:47,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 38 transitions. [2019-11-20 03:42:47,261 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 38 transitions. Word has length 18 [2019-11-20 03:42:47,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 03:42:47,261 INFO L462 AbstractCegarLoop]: Abstraction has 32 states and 38 transitions. [2019-11-20 03:42:47,261 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-20 03:42:47,261 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 38 transitions. [2019-11-20 03:42:47,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-11-20 03:42:47,262 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 03:42:47,263 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 03:42:47,472 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 mathsat -unsat_core_generation=3 [2019-11-20 03:42:47,472 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 03:42:47,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 03:42:47,473 INFO L82 PathProgramCache]: Analyzing trace with hash -208358251, now seen corresponding path program 1 times [2019-11-20 03:42:47,473 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 03:42:47,475 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1793213329] [2019-11-20 03:42:47,475 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fe1920e8-120f-4cc7-828f-0081645d78f4/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 [2019-11-20 03:42:47,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 03:42:47,589 INFO L255 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2019-11-20 03:42:47,592 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 03:42:47,657 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 03:42:47,658 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 03:42:47,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 03:42:47,733 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1793213329] [2019-11-20 03:42:47,733 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 03:42:47,734 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2019-11-20 03:42:47,734 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866649988] [2019-11-20 03:42:47,734 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-20 03:42:47,734 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 03:42:47,735 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-20 03:42:47,735 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2019-11-20 03:42:47,735 INFO L87 Difference]: Start difference. First operand 32 states and 38 transitions. Second operand 8 states. [2019-11-20 03:42:47,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 03:42:47,831 INFO L93 Difference]: Finished difference Result 45 states and 50 transitions. [2019-11-20 03:42:47,839 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-20 03:42:47,839 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2019-11-20 03:42:47,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 03:42:47,840 INFO L225 Difference]: With dead ends: 45 [2019-11-20 03:42:47,840 INFO L226 Difference]: Without dead ends: 27 [2019-11-20 03:42:47,841 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 [2019-11-20 03:42:47,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2019-11-20 03:42:47,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2019-11-20 03:42:47,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2019-11-20 03:42:47,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions. [2019-11-20 03:42:47,845 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 28 transitions. Word has length 19 [2019-11-20 03:42:47,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 03:42:47,845 INFO L462 AbstractCegarLoop]: Abstraction has 27 states and 28 transitions. [2019-11-20 03:42:47,845 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-20 03:42:47,846 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 28 transitions. [2019-11-20 03:42:47,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-11-20 03:42:47,846 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 03:42:47,846 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] [2019-11-20 03:42:48,047 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 mathsat -unsat_core_generation=3 [2019-11-20 03:42:48,047 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 03:42:48,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 03:42:48,048 INFO L82 PathProgramCache]: Analyzing trace with hash -1524231306, now seen corresponding path program 1 times [2019-11-20 03:42:48,048 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 03:42:48,048 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [146512018] [2019-11-20 03:42:48,048 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fe1920e8-120f-4cc7-828f-0081645d78f4/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 [2019-11-20 03:42:48,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 03:42:48,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 03:42:48,458 INFO L174 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2019-11-20 03:42:48,459 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-20 03:42:48,659 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 mathsat -unsat_core_generation=3 [2019-11-20 03:42:48,697 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 03:42:48 BoogieIcfgContainer [2019-11-20 03:42:48,697 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-20 03:42:48,698 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-20 03:42:48,698 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-20 03:42:48,698 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-20 03:42:48,699 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 03:42:43" (3/4) ... [2019-11-20 03:42:48,703 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-20 03:42:48,774 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_fe1920e8-120f-4cc7-828f-0081645d78f4/bin/uautomizer/witness.graphml [2019-11-20 03:42:48,774 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-20 03:42:48,776 INFO L168 Benchmark]: Toolchain (without parser) took 5985.31 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 164.6 MB). Free memory was 955.1 MB in the beginning and 919.4 MB in the end (delta: 35.7 MB). Peak memory consumption was 200.3 MB. Max. memory is 11.5 GB. [2019-11-20 03:42:48,777 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 1.0 GB. Free memory is still 981.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 03:42:48,778 INFO L168 Benchmark]: CACSL2BoogieTranslator took 445.94 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 164.6 MB). Free memory was 955.1 MB in the beginning and 1.2 GB in the end (delta: -199.7 MB). Peak memory consumption was 20.8 MB. Max. memory is 11.5 GB. [2019-11-20 03:42:48,778 INFO L168 Benchmark]: Boogie Procedure Inliner took 49.47 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. [2019-11-20 03:42:48,778 INFO L168 Benchmark]: Boogie Preprocessor took 49.08 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 03:42:48,779 INFO L168 Benchmark]: RCFGBuilder took 605.46 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: 25.3 MB). Peak memory consumption was 25.3 MB. Max. memory is 11.5 GB. [2019-11-20 03:42:48,780 INFO L168 Benchmark]: TraceAbstraction took 4752.98 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 919.4 MB in the end (delta: 203.7 MB). Peak memory consumption was 203.7 MB. Max. memory is 11.5 GB. [2019-11-20 03:42:48,780 INFO L168 Benchmark]: Witness Printer took 76.26 ms. Allocated memory is still 1.2 GB. Free memory is still 919.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 03:42:48,783 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 1.0 GB. Free memory is still 981.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 445.94 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 164.6 MB). Free memory was 955.1 MB in the beginning and 1.2 GB in the end (delta: -199.7 MB). Peak memory consumption was 20.8 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 49.47 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 49.08 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 605.46 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: 25.3 MB). Peak memory consumption was 25.3 MB. Max. memory is 11.5 GB. * TraceAbstraction took 4752.98 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 919.4 MB in the end (delta: 203.7 MB). Peak memory consumption was 203.7 MB. Max. memory is 11.5 GB. * Witness Printer took 76.26 ms. Allocated memory is still 1.2 GB. Free memory is still 919.4 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: 4.6s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 234 SDtfs, 290 SDslu, 362 SDs, 0 SdLazy, 112 SolverSat, 21 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 209 GetRequests, 168 SyntacticMatches, 3 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=32occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 7 MinimizatonAttempts, 61 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 128 NumberOfCodeBlocks, 128 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 198 ConstructedInterpolants, 15 QuantifiedInterpolants, 10764 SizeOfPredicates, 27 NumberOfNonLiveVariables, 381 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...