./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/float_req_bl_1091.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc9ebaa6-b888-494d-a025-de7f817aef7f/bin/uautomizer-GMMbpWq8iD/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc9ebaa6-b888-494d-a025-de7f817aef7f/bin/uautomizer-GMMbpWq8iD/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc9ebaa6-b888-494d-a025-de7f817aef7f/bin/uautomizer-GMMbpWq8iD/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc9ebaa6-b888-494d-a025-de7f817aef7f/bin/uautomizer-GMMbpWq8iD/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1091.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc9ebaa6-b888-494d-a025-de7f817aef7f/bin/uautomizer-GMMbpWq8iD/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc9ebaa6-b888-494d-a025-de7f817aef7f/bin/uautomizer-GMMbpWq8iD --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 9c301aadcf824cc95473e8bc31e84ff4ca7e703d59978c831f904d5646201155 .......................................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc9ebaa6-b888-494d-a025-de7f817aef7f/bin/uautomizer-GMMbpWq8iD/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc9ebaa6-b888-494d-a025-de7f817aef7f/bin/uautomizer-GMMbpWq8iD/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc9ebaa6-b888-494d-a025-de7f817aef7f/bin/uautomizer-GMMbpWq8iD/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc9ebaa6-b888-494d-a025-de7f817aef7f/bin/uautomizer-GMMbpWq8iD/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1091.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc9ebaa6-b888-494d-a025-de7f817aef7f/bin/uautomizer-GMMbpWq8iD/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc9ebaa6-b888-494d-a025-de7f817aef7f/bin/uautomizer-GMMbpWq8iD --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 9c301aadcf824cc95473e8bc31e84ff4ca7e703d59978c831f904d5646201155 ............................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-b2eff8b [2021-10-28 23:02:20,934 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 23:02:20,937 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 23:02:20,983 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 23:02:20,984 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 23:02:20,986 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 23:02:20,988 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 23:02:20,992 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 23:02:20,995 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 23:02:20,996 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 23:02:20,998 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 23:02:21,000 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 23:02:21,001 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 23:02:21,003 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 23:02:21,005 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 23:02:21,008 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 23:02:21,009 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 23:02:21,011 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 23:02:21,015 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 23:02:21,018 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 23:02:21,021 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 23:02:21,023 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 23:02:21,025 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 23:02:21,027 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 23:02:21,032 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 23:02:21,033 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 23:02:21,034 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 23:02:21,035 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 23:02:21,036 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 23:02:21,038 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 23:02:21,039 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 23:02:21,040 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 23:02:21,041 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 23:02:21,043 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 23:02:21,045 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 23:02:21,045 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 23:02:21,047 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 23:02:21,047 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 23:02:21,048 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 23:02:21,049 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 23:02:21,051 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 23:02:21,052 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc9ebaa6-b888-494d-a025-de7f817aef7f/bin/uautomizer-GMMbpWq8iD/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-28 23:02:21,110 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 23:02:21,111 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 23:02:21,112 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 23:02:21,113 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 23:02:21,115 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 23:02:21,116 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 23:02:21,116 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 23:02:21,116 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 23:02:21,117 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 23:02:21,117 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 23:02:21,119 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 23:02:21,119 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 23:02:21,120 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-28 23:02:21,120 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-28 23:02:21,120 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-28 23:02:21,121 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 23:02:21,121 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-28 23:02:21,121 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 23:02:21,122 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-28 23:02:21,122 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 23:02:21,122 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 23:02:21,122 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-28 23:02:21,123 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 23:02:21,123 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 23:02:21,123 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-28 23:02:21,124 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-28 23:02:21,124 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-28 23:02:21,124 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-28 23:02:21,125 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-28 23:02:21,127 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-28 23:02:21,127 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-28 23:02:21,127 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 23:02:21,128 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc9ebaa6-b888-494d-a025-de7f817aef7f/bin/uautomizer-GMMbpWq8iD/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc9ebaa6-b888-494d-a025-de7f817aef7f/bin/uautomizer-GMMbpWq8iD Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9c301aadcf824cc95473e8bc31e84ff4ca7e703d59978c831f904d5646201155 [2021-10-28 23:02:21,476 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 23:02:21,526 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 23:02:21,531 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 23:02:21,533 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 23:02:21,534 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 23:02:21,535 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc9ebaa6-b888-494d-a025-de7f817aef7f/bin/uautomizer-GMMbpWq8iD/../../sv-benchmarks/c/float-newlib/float_req_bl_1091.c [2021-10-28 23:02:21,681 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc9ebaa6-b888-494d-a025-de7f817aef7f/bin/uautomizer-GMMbpWq8iD/data/a3b3d7785/42cf19a8c9e24612aab3c5c46268317a/FLAG282e40cb4 [2021-10-28 23:02:22,251 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 23:02:22,252 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc9ebaa6-b888-494d-a025-de7f817aef7f/sv-benchmarks/c/float-newlib/float_req_bl_1091.c [2021-10-28 23:02:22,275 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc9ebaa6-b888-494d-a025-de7f817aef7f/bin/uautomizer-GMMbpWq8iD/data/a3b3d7785/42cf19a8c9e24612aab3c5c46268317a/FLAG282e40cb4 [2021-10-28 23:02:22,568 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc9ebaa6-b888-494d-a025-de7f817aef7f/bin/uautomizer-GMMbpWq8iD/data/a3b3d7785/42cf19a8c9e24612aab3c5c46268317a [2021-10-28 23:02:22,571 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 23:02:22,573 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-28 23:02:22,576 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 23:02:22,576 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 23:02:22,581 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 23:02:22,582 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 11:02:22" (1/1) ... [2021-10-28 23:02:22,583 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@21c8ad26 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:02:22, skipping insertion in model container [2021-10-28 23:02:22,584 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 11:02:22" (1/1) ... [2021-10-28 23:02:22,593 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 23:02:22,615 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 23:02:22,851 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc9ebaa6-b888-494d-a025-de7f817aef7f/sv-benchmarks/c/float-newlib/float_req_bl_1091.c[1603,1616] [2021-10-28 23:02:22,855 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 23:02:22,866 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 23:02:22,898 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc9ebaa6-b888-494d-a025-de7f817aef7f/sv-benchmarks/c/float-newlib/float_req_bl_1091.c[1603,1616] [2021-10-28 23:02:22,899 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 23:02:22,918 INFO L208 MainTranslator]: Completed translation [2021-10-28 23:02:22,918 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:02:22 WrapperNode [2021-10-28 23:02:22,919 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 23:02:22,920 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-28 23:02:22,921 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-28 23:02:22,921 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-28 23:02:22,934 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:02:22" (1/1) ... [2021-10-28 23:02:22,958 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:02:22" (1/1) ... [2021-10-28 23:02:22,986 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-28 23:02:22,987 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 23:02:22,987 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 23:02:22,987 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 23:02:22,999 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:02:22" (1/1) ... [2021-10-28 23:02:22,999 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:02:22" (1/1) ... [2021-10-28 23:02:23,003 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:02:22" (1/1) ... [2021-10-28 23:02:23,003 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:02:22" (1/1) ... [2021-10-28 23:02:23,013 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:02:22" (1/1) ... [2021-10-28 23:02:23,019 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:02:22" (1/1) ... [2021-10-28 23:02:23,021 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:02:22" (1/1) ... [2021-10-28 23:02:23,024 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 23:02:23,025 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 23:02:23,026 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 23:02:23,026 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 23:02:23,027 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:02:22" (1/1) ... [2021-10-28 23:02:23,037 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 23:02:23,051 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc9ebaa6-b888-494d-a025-de7f817aef7f/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:02:23,066 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc9ebaa6-b888-494d-a025-de7f817aef7f/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-28 23:02:23,071 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc9ebaa6-b888-494d-a025-de7f817aef7f/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-28 23:02:23,114 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-28 23:02:23,114 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 23:02:23,114 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-10-28 23:02:23,115 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-28 23:02:23,115 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-10-28 23:02:23,115 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 23:02:23,115 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 23:02:23,115 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-28 23:02:23,115 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-28 23:02:23,440 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 23:02:23,440 INFO L299 CfgBuilder]: Removed 12 assume(true) statements. [2021-10-28 23:02:23,443 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:02:23 BoogieIcfgContainer [2021-10-28 23:02:23,443 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 23:02:23,445 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-28 23:02:23,446 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-28 23:02:23,450 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-28 23:02:23,451 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 11:02:22" (1/3) ... [2021-10-28 23:02:23,452 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76b39fb9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 11:02:23, skipping insertion in model container [2021-10-28 23:02:23,453 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:02:22" (2/3) ... [2021-10-28 23:02:23,453 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76b39fb9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 11:02:23, skipping insertion in model container [2021-10-28 23:02:23,453 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:02:23" (3/3) ... [2021-10-28 23:02:23,455 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1091.c [2021-10-28 23:02:23,462 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-28 23:02:23,463 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-28 23:02:23,529 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-28 23:02:23,538 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-28 23:02:23,538 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-28 23:02:23,557 INFO L276 IsEmpty]: Start isEmpty. Operand has 26 states, 24 states have (on average 1.625) internal successors, (39), 25 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:02:23,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-28 23:02:23,565 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:02:23,565 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:02:23,566 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:02:23,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:02:23,574 INFO L85 PathProgramCache]: Analyzing trace with hash -2022266355, now seen corresponding path program 1 times [2021-10-28 23:02:23,588 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:02:23,588 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1569143075] [2021-10-28 23:02:23,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:02:23,590 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:02:23,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:02:23,882 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:02:23,883 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:02:23,885 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1569143075] [2021-10-28 23:02:23,886 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1569143075] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:02:23,888 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:02:23,888 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-28 23:02:23,891 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136039284] [2021-10-28 23:02:23,899 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-28 23:02:23,899 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:02:23,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-28 23:02:23,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-28 23:02:23,935 INFO L87 Difference]: Start difference. First operand has 26 states, 24 states have (on average 1.625) internal successors, (39), 25 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:02:23,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:02:23,964 INFO L93 Difference]: Finished difference Result 50 states and 76 transitions. [2021-10-28 23:02:23,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-28 23:02:23,966 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-10-28 23:02:23,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:02:23,977 INFO L225 Difference]: With dead ends: 50 [2021-10-28 23:02:23,977 INFO L226 Difference]: Without dead ends: 23 [2021-10-28 23:02:23,980 INFO L786 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 [2021-10-28 23:02:23,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2021-10-28 23:02:24,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2021-10-28 23:02:24,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.4090909090909092) internal successors, (31), 22 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:02:24,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 31 transitions. [2021-10-28 23:02:24,015 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 31 transitions. Word has length 10 [2021-10-28 23:02:24,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:02:24,015 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 31 transitions. [2021-10-28 23:02:24,016 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:02:24,016 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 31 transitions. [2021-10-28 23:02:24,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-28 23:02:24,017 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:02:24,017 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:02:24,017 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-28 23:02:24,018 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:02:24,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:02:24,019 INFO L85 PathProgramCache]: Analyzing trace with hash -62606256, now seen corresponding path program 1 times [2021-10-28 23:02:24,019 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:02:24,020 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1613659542] [2021-10-28 23:02:24,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:02:24,020 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:02:24,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:02:24,129 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:02:24,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:02:24,240 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:02:24,241 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-10-28 23:02:24,243 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 23:02:24,245 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-28 23:02:24,251 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1] [2021-10-28 23:02:24,254 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-28 23:02:24,309 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 11:02:24 BoogieIcfgContainer [2021-10-28 23:02:24,309 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-28 23:02:24,312 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 23:02:24,312 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 23:02:24,312 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 23:02:24,314 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:02:23" (3/4) ... [2021-10-28 23:02:24,318 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-28 23:02:24,318 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 23:02:24,323 INFO L168 Benchmark]: Toolchain (without parser) took 1746.48 ms. Allocated memory is still 113.2 MB. Free memory was 77.7 MB in the beginning and 47.2 MB in the end (delta: 30.5 MB). Peak memory consumption was 28.5 MB. Max. memory is 16.1 GB. [2021-10-28 23:02:24,325 INFO L168 Benchmark]: CDTParser took 0.42 ms. Allocated memory is still 113.2 MB. Free memory was 86.9 MB in the beginning and 86.8 MB in the end (delta: 29.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 23:02:24,328 INFO L168 Benchmark]: CACSL2BoogieTranslator took 343.75 ms. Allocated memory is still 113.2 MB. Free memory was 77.4 MB in the beginning and 87.8 MB in the end (delta: -10.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-28 23:02:24,331 INFO L168 Benchmark]: Boogie Procedure Inliner took 65.96 ms. Allocated memory is still 113.2 MB. Free memory was 87.8 MB in the beginning and 85.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 23:02:24,339 INFO L168 Benchmark]: Boogie Preprocessor took 37.42 ms. Allocated memory is still 113.2 MB. Free memory was 85.6 MB in the beginning and 84.3 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 23:02:24,340 INFO L168 Benchmark]: RCFGBuilder took 418.01 ms. Allocated memory is still 113.2 MB. Free memory was 84.3 MB in the beginning and 73.1 MB in the end (delta: 11.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-28 23:02:24,341 INFO L168 Benchmark]: TraceAbstraction took 864.26 ms. Allocated memory is still 113.2 MB. Free memory was 72.3 MB in the beginning and 47.2 MB in the end (delta: 25.2 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.1 GB. [2021-10-28 23:02:24,341 INFO L168 Benchmark]: Witness Printer took 6.69 ms. Allocated memory is still 113.2 MB. Free memory is still 47.2 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 23:02:24,345 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.42 ms. Allocated memory is still 113.2 MB. Free memory was 86.9 MB in the beginning and 86.8 MB in the end (delta: 29.7 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 343.75 ms. Allocated memory is still 113.2 MB. Free memory was 77.4 MB in the beginning and 87.8 MB in the end (delta: -10.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 65.96 ms. Allocated memory is still 113.2 MB. Free memory was 87.8 MB in the beginning and 85.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 37.42 ms. Allocated memory is still 113.2 MB. Free memory was 85.6 MB in the beginning and 84.3 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 418.01 ms. Allocated memory is still 113.2 MB. Free memory was 84.3 MB in the beginning and 73.1 MB in the end (delta: 11.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 864.26 ms. Allocated memory is still 113.2 MB. Free memory was 72.3 MB in the beginning and 47.2 MB in the end (delta: 25.2 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.1 GB. * Witness Printer took 6.69 ms. Allocated memory is still 113.2 MB. Free memory is still 47.2 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 74]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 59, overapproximation of someBinaryArithmeticFLOAToperation at line 68, overapproximation of bitwiseAnd at line 23. Possible FailurePath: [L13] static const float huge_ceil = 1.0e30; VAL [huge_ceil=1000000000000000000000000000000] [L68] float x = 0.0f / 0.0f; [L16] __int32_t i0, j0; [L17] __uint32_t i, ix; VAL [huge_ceil=1000000000000000000000000000000] [L19] ieee_float_shape_type gf_u; [L20] gf_u.value = (x) [L21] EXPR gf_u.word [L21] (i0) = gf_u.word [L23] ix = (i0 & 0x7fffffff) [L24] j0 = (ix >> 23) - 0x7f VAL [huge_ceil=1000000000000000000000000000000] [L25] COND FALSE !(j0 < 23) VAL [huge_ceil=1000000000000000000000000000000] [L45] COND FALSE !(!((ix) < 0x7f800000L)) [L48] return x; VAL [huge_ceil=1000000000000000000000000000000] [L70] float res = ceil_float(x); [L59] return x != x; VAL [huge_ceil=1000000000000000000000000000000] [L73] COND TRUE !isnan_float(res) [L74] reach_error() VAL [huge_ceil=1000000000000000000000000000000] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 26 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.7s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 34 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=26occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 21 NumberOfCodeBlocks, 21 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 9 ConstructedInterpolants, 0 QuantifiedInterpolants, 9 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: 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 [2021-10-28 23:02:24,411 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc9ebaa6-b888-494d-a025-de7f817aef7f/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-dev-b2eff8b [2021-10-28 23:02:27,504 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 23:02:27,507 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 23:02:27,577 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 23:02:27,578 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 23:02:27,584 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 23:02:27,586 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 23:02:27,595 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 23:02:27,599 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 23:02:27,606 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 23:02:27,608 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 23:02:27,611 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 23:02:27,611 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 23:02:27,615 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 23:02:27,618 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 23:02:27,623 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 23:02:27,626 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 23:02:27,627 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 23:02:27,630 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 23:02:27,639 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 23:02:27,643 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 23:02:27,645 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 23:02:27,648 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 23:02:27,651 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 23:02:27,663 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 23:02:27,663 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 23:02:27,664 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 23:02:27,667 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 23:02:27,668 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 23:02:27,670 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 23:02:27,670 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 23:02:27,671 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 23:02:27,674 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 23:02:27,676 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 23:02:27,678 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 23:02:27,678 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 23:02:27,680 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 23:02:27,680 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 23:02:27,681 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 23:02:27,684 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 23:02:27,685 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 23:02:27,686 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc9ebaa6-b888-494d-a025-de7f817aef7f/bin/uautomizer-GMMbpWq8iD/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-10-28 23:02:27,745 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 23:02:27,746 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 23:02:27,747 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 23:02:27,747 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 23:02:27,750 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 23:02:27,750 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 23:02:27,750 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 23:02:27,751 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 23:02:27,751 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 23:02:27,751 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 23:02:27,753 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 23:02:27,753 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-28 23:02:27,753 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-28 23:02:27,754 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-28 23:02:27,754 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-28 23:02:27,755 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-28 23:02:27,755 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 23:02:27,755 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-28 23:02:27,755 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 23:02:27,756 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-28 23:02:27,756 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 23:02:27,756 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 23:02:27,757 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-28 23:02:27,757 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 23:02:27,757 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 23:02:27,758 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-28 23:02:27,758 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-28 23:02:27,758 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-10-28 23:02:27,759 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-28 23:02:27,759 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-28 23:02:27,759 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-28 23:02:27,760 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-28 23:02:27,760 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 23:02:27,760 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-28 23:02:27,761 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc9ebaa6-b888-494d-a025-de7f817aef7f/bin/uautomizer-GMMbpWq8iD/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc9ebaa6-b888-494d-a025-de7f817aef7f/bin/uautomizer-GMMbpWq8iD Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9c301aadcf824cc95473e8bc31e84ff4ca7e703d59978c831f904d5646201155 [2021-10-28 23:02:28,302 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 23:02:28,345 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 23:02:28,349 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 23:02:28,353 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 23:02:28,354 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 23:02:28,356 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc9ebaa6-b888-494d-a025-de7f817aef7f/bin/uautomizer-GMMbpWq8iD/../../sv-benchmarks/c/float-newlib/float_req_bl_1091.c [2021-10-28 23:02:28,446 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc9ebaa6-b888-494d-a025-de7f817aef7f/bin/uautomizer-GMMbpWq8iD/data/30adaa653/05e04b33a10147d1a5906a5aefc6b57b/FLAGcf2f7e527 [2021-10-28 23:02:29,187 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 23:02:29,190 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc9ebaa6-b888-494d-a025-de7f817aef7f/sv-benchmarks/c/float-newlib/float_req_bl_1091.c [2021-10-28 23:02:29,201 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc9ebaa6-b888-494d-a025-de7f817aef7f/bin/uautomizer-GMMbpWq8iD/data/30adaa653/05e04b33a10147d1a5906a5aefc6b57b/FLAGcf2f7e527 [2021-10-28 23:02:29,505 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc9ebaa6-b888-494d-a025-de7f817aef7f/bin/uautomizer-GMMbpWq8iD/data/30adaa653/05e04b33a10147d1a5906a5aefc6b57b [2021-10-28 23:02:29,508 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 23:02:29,510 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-28 23:02:29,512 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 23:02:29,513 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 23:02:29,523 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 23:02:29,524 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 11:02:29" (1/1) ... [2021-10-28 23:02:29,525 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@dab8474 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:02:29, skipping insertion in model container [2021-10-28 23:02:29,526 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 11:02:29" (1/1) ... [2021-10-28 23:02:29,535 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 23:02:29,556 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 23:02:29,778 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc9ebaa6-b888-494d-a025-de7f817aef7f/sv-benchmarks/c/float-newlib/float_req_bl_1091.c[1603,1616] [2021-10-28 23:02:29,782 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 23:02:29,800 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 23:02:29,832 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc9ebaa6-b888-494d-a025-de7f817aef7f/sv-benchmarks/c/float-newlib/float_req_bl_1091.c[1603,1616] [2021-10-28 23:02:29,834 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 23:02:29,889 INFO L208 MainTranslator]: Completed translation [2021-10-28 23:02:29,890 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:02:29 WrapperNode [2021-10-28 23:02:29,890 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 23:02:29,891 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-28 23:02:29,892 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-28 23:02:29,892 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-28 23:02:29,913 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:02:29" (1/1) ... [2021-10-28 23:02:29,944 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:02:29" (1/1) ... [2021-10-28 23:02:29,982 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-28 23:02:29,984 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 23:02:29,984 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 23:02:29,985 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 23:02:29,995 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:02:29" (1/1) ... [2021-10-28 23:02:29,995 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:02:29" (1/1) ... [2021-10-28 23:02:30,012 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:02:29" (1/1) ... [2021-10-28 23:02:30,012 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:02:29" (1/1) ... [2021-10-28 23:02:30,031 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:02:29" (1/1) ... [2021-10-28 23:02:30,045 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:02:29" (1/1) ... [2021-10-28 23:02:30,056 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:02:29" (1/1) ... [2021-10-28 23:02:30,065 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 23:02:30,066 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 23:02:30,066 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 23:02:30,066 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 23:02:30,067 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:02:29" (1/1) ... [2021-10-28 23:02:30,076 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 23:02:30,089 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc9ebaa6-b888-494d-a025-de7f817aef7f/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:02:30,103 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc9ebaa6-b888-494d-a025-de7f817aef7f/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-28 23:02:30,124 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc9ebaa6-b888-494d-a025-de7f817aef7f/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-28 23:02:30,168 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-28 23:02:30,169 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 23:02:30,169 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2021-10-28 23:02:30,169 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-28 23:02:30,170 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 23:02:30,170 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 23:02:30,170 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2021-10-28 23:02:30,170 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-28 23:02:30,171 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-28 23:02:31,171 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 23:02:31,172 INFO L299 CfgBuilder]: Removed 12 assume(true) statements. [2021-10-28 23:02:31,174 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:02:31 BoogieIcfgContainer [2021-10-28 23:02:31,175 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 23:02:31,177 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-28 23:02:31,177 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-28 23:02:31,181 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-28 23:02:31,181 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 11:02:29" (1/3) ... [2021-10-28 23:02:31,183 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40412067 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 11:02:31, skipping insertion in model container [2021-10-28 23:02:31,183 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:02:29" (2/3) ... [2021-10-28 23:02:31,183 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40412067 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 11:02:31, skipping insertion in model container [2021-10-28 23:02:31,184 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:02:31" (3/3) ... [2021-10-28 23:02:31,186 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1091.c [2021-10-28 23:02:31,193 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-28 23:02:31,193 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-28 23:02:31,270 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-28 23:02:31,279 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-28 23:02:31,280 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-28 23:02:31,299 INFO L276 IsEmpty]: Start isEmpty. Operand has 26 states, 24 states have (on average 1.625) internal successors, (39), 25 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:02:31,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-28 23:02:31,306 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:02:31,307 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:02:31,308 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:02:31,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:02:31,324 INFO L85 PathProgramCache]: Analyzing trace with hash -2022266355, now seen corresponding path program 1 times [2021-10-28 23:02:31,337 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 23:02:31,338 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1969185270] [2021-10-28 23:02:31,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:02:31,340 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 23:02:31,340 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc9ebaa6-b888-494d-a025-de7f817aef7f/bin/uautomizer-GMMbpWq8iD/mathsat [2021-10-28 23:02:31,344 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc9ebaa6-b888-494d-a025-de7f817aef7f/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 23:02:31,350 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc9ebaa6-b888-494d-a025-de7f817aef7f/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-28 23:02:31,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:02:31,527 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-28 23:02:31,533 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:02:31,625 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:02:31,626 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 23:02:31,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:02:31,669 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 23:02:31,669 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1969185270] [2021-10-28 23:02:31,670 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1969185270] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 23:02:31,671 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:02:31,671 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-28 23:02:31,673 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097420372] [2021-10-28 23:02:31,680 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-28 23:02:31,680 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 23:02:31,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-28 23:02:31,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-28 23:02:31,700 INFO L87 Difference]: Start difference. First operand has 26 states, 24 states have (on average 1.625) internal successors, (39), 25 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:02:31,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:02:31,744 INFO L93 Difference]: Finished difference Result 50 states and 76 transitions. [2021-10-28 23:02:31,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-28 23:02:31,746 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-10-28 23:02:31,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:02:31,758 INFO L225 Difference]: With dead ends: 50 [2021-10-28 23:02:31,758 INFO L226 Difference]: Without dead ends: 23 [2021-10-28 23:02:31,761 INFO L786 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 [2021-10-28 23:02:31,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2021-10-28 23:02:31,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2021-10-28 23:02:31,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.4090909090909092) internal successors, (31), 22 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:02:31,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 31 transitions. [2021-10-28 23:02:31,852 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 31 transitions. Word has length 10 [2021-10-28 23:02:31,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:02:31,852 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 31 transitions. [2021-10-28 23:02:31,853 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:02:31,853 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 31 transitions. [2021-10-28 23:02:31,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-28 23:02:31,854 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:02:31,854 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:02:31,877 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc9ebaa6-b888-494d-a025-de7f817aef7f/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-28 23:02:32,055 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc9ebaa6-b888-494d-a025-de7f817aef7f/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 [2021-10-28 23:02:32,056 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:02:32,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:02:32,057 INFO L85 PathProgramCache]: Analyzing trace with hash -62606256, now seen corresponding path program 1 times [2021-10-28 23:02:32,058 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 23:02:32,059 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [21345674] [2021-10-28 23:02:32,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:02:32,059 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 23:02:32,059 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc9ebaa6-b888-494d-a025-de7f817aef7f/bin/uautomizer-GMMbpWq8iD/mathsat [2021-10-28 23:02:32,061 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc9ebaa6-b888-494d-a025-de7f817aef7f/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 23:02:32,067 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc9ebaa6-b888-494d-a025-de7f817aef7f/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-28 23:02:32,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:02:32,231 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-28 23:02:32,244 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:02:32,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:02:32,579 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 23:02:32,788 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:02:32,788 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 23:02:32,789 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [21345674] [2021-10-28 23:02:32,789 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [21345674] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 23:02:32,789 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:02:32,790 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2021-10-28 23:02:32,790 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832380855] [2021-10-28 23:02:32,792 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-28 23:02:32,793 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 23:02:32,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-28 23:02:32,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-10-28 23:02:32,799 INFO L87 Difference]: Start difference. First operand 23 states and 31 transitions. Second operand has 10 states, 10 states have (on average 2.0) internal successors, (20), 10 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:02:33,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:02:33,450 INFO L93 Difference]: Finished difference Result 34 states and 41 transitions. [2021-10-28 23:02:33,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-28 23:02:33,451 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.0) internal successors, (20), 10 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-10-28 23:02:33,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:02:33,452 INFO L225 Difference]: With dead ends: 34 [2021-10-28 23:02:33,452 INFO L226 Difference]: Without dead ends: 18 [2021-10-28 23:02:33,454 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2021-10-28 23:02:33,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2021-10-28 23:02:33,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2021-10-28 23:02:33,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 17 states have (on average 1.0588235294117647) internal successors, (18), 17 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:02:33,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2021-10-28 23:02:33,458 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 11 [2021-10-28 23:02:33,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:02:33,459 INFO L470 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2021-10-28 23:02:33,459 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.0) internal successors, (20), 10 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:02:33,460 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2021-10-28 23:02:33,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-28 23:02:33,461 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:02:33,461 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:02:33,487 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc9ebaa6-b888-494d-a025-de7f817aef7f/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-28 23:02:33,686 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc9ebaa6-b888-494d-a025-de7f817aef7f/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 [2021-10-28 23:02:33,686 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:02:33,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:02:33,690 INFO L85 PathProgramCache]: Analyzing trace with hash 1612289523, now seen corresponding path program 1 times [2021-10-28 23:02:33,692 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 23:02:33,693 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1277534270] [2021-10-28 23:02:33,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:02:33,694 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 23:02:33,694 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc9ebaa6-b888-494d-a025-de7f817aef7f/bin/uautomizer-GMMbpWq8iD/mathsat [2021-10-28 23:02:33,695 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc9ebaa6-b888-494d-a025-de7f817aef7f/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 23:02:33,699 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc9ebaa6-b888-494d-a025-de7f817aef7f/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-28 23:02:33,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:02:33,908 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-28 23:02:33,911 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:02:34,185 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:02:34,185 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 23:02:34,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:02:34,480 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 23:02:34,480 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1277534270] [2021-10-28 23:02:34,481 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1277534270] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 23:02:34,482 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:02:34,482 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-10-28 23:02:34,483 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303849534] [2021-10-28 23:02:34,483 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-28 23:02:34,485 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 23:02:34,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-28 23:02:34,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-10-28 23:02:34,489 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand has 8 states, 8 states have (on average 2.5) internal successors, (20), 8 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:02:34,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:02:34,646 INFO L93 Difference]: Finished difference Result 18 states and 18 transitions. [2021-10-28 23:02:34,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-28 23:02:34,646 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.5) internal successors, (20), 8 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-10-28 23:02:34,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:02:34,647 INFO L225 Difference]: With dead ends: 18 [2021-10-28 23:02:34,647 INFO L226 Difference]: Without dead ends: 0 [2021-10-28 23:02:34,648 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2021-10-28 23:02:34,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-28 23:02:34,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-28 23:02:34,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:02:34,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-28 23:02:34,649 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2021-10-28 23:02:34,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:02:34,649 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-28 23:02:34,649 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.5) internal successors, (20), 8 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:02:34,650 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-28 23:02:34,650 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-28 23:02:34,653 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 23:02:34,676 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc9ebaa6-b888-494d-a025-de7f817aef7f/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-28 23:02:34,869 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc9ebaa6-b888-494d-a025-de7f817aef7f/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 [2021-10-28 23:02:34,872 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-28 23:02:34,875 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 23:02:34,915 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 23:02:34,917 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 23:02:34,918 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 23:02:34,982 INFO L857 garLoopResultBuilder]: For program point L27(lines 27 33) no Hoare annotation was computed. [2021-10-28 23:02:34,983 INFO L857 garLoopResultBuilder]: For program point L73(lines 73 76) no Hoare annotation was computed. [2021-10-28 23:02:34,983 INFO L857 garLoopResultBuilder]: For program point L36(lines 36 37) no Hoare annotation was computed. [2021-10-28 23:02:34,983 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-10-28 23:02:34,983 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-28 23:02:34,984 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-10-28 23:02:34,984 INFO L857 garLoopResultBuilder]: For program point L28(lines 28 32) no Hoare annotation was computed. [2021-10-28 23:02:34,984 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 74) no Hoare annotation was computed. [2021-10-28 23:02:34,984 INFO L860 garLoopResultBuilder]: At program point L78(lines 61 79) the Hoare annotation is: true [2021-10-28 23:02:34,985 INFO L857 garLoopResultBuilder]: For program point L45(lines 45 48) no Hoare annotation was computed. [2021-10-28 23:02:34,985 INFO L857 garLoopResultBuilder]: For program point L74(line 74) no Hoare annotation was computed. [2021-10-28 23:02:34,985 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-28 23:02:34,985 INFO L857 garLoopResultBuilder]: For program point L25(lines 25 49) no Hoare annotation was computed. [2021-10-28 23:02:34,985 INFO L857 garLoopResultBuilder]: For program point L50(lines 50 54) no Hoare annotation was computed. [2021-10-28 23:02:34,986 INFO L857 garLoopResultBuilder]: For program point L50-1(lines 15 56) no Hoare annotation was computed. [2021-10-28 23:02:34,986 INFO L857 garLoopResultBuilder]: For program point L50-2(lines 50 54) no Hoare annotation was computed. [2021-10-28 23:02:34,986 INFO L857 garLoopResultBuilder]: For program point L38(lines 38 42) no Hoare annotation was computed. [2021-10-28 23:02:34,986 INFO L857 garLoopResultBuilder]: For program point L30(lines 30 32) no Hoare annotation was computed. [2021-10-28 23:02:34,986 INFO L853 garLoopResultBuilder]: At program point L59(line 59) the Hoare annotation is: (and (not (fp.eq ULTIMATE.start_ceil_float_~x ULTIMATE.start_ceil_float_~x)) (= (_ bv1 32) |ULTIMATE.start_isnan_float_#res|) (exists ((currentRoundingMode RoundingMode)) (= (fp.div currentRoundingMode (_ +zero 8 24) (_ +zero 8 24)) |ULTIMATE.start_ceil_float_#res|))) [2021-10-28 23:02:34,987 INFO L857 garLoopResultBuilder]: For program point L26(lines 26 43) no Hoare annotation was computed. [2021-10-28 23:02:34,987 INFO L853 garLoopResultBuilder]: At program point L55(lines 15 56) the Hoare annotation is: (and (not (fp.eq ULTIMATE.start_ceil_float_~x ULTIMATE.start_ceil_float_~x)) (exists ((currentRoundingMode RoundingMode)) (= (fp.div currentRoundingMode (_ +zero 8 24) (_ +zero 8 24)) |ULTIMATE.start_ceil_float_#res|))) [2021-10-28 23:02:34,987 INFO L857 garLoopResultBuilder]: For program point L18-1(lines 18 22) no Hoare annotation was computed. [2021-10-28 23:02:34,987 INFO L853 garLoopResultBuilder]: At program point L18-2(lines 18 22) the Hoare annotation is: (not (fp.eq ULTIMATE.start_ceil_float_~x ULTIMATE.start_ceil_float_~x)) [2021-10-28 23:02:34,987 INFO L857 garLoopResultBuilder]: For program point L18-3(lines 18 22) no Hoare annotation was computed. [2021-10-28 23:02:34,988 INFO L857 garLoopResultBuilder]: For program point L39(lines 39 40) no Hoare annotation was computed. [2021-10-28 23:02:34,988 INFO L857 garLoopResultBuilder]: For program point L39-2(lines 39 40) no Hoare annotation was computed. [2021-10-28 23:02:34,993 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2021-10-28 23:02:34,995 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-28 23:02:35,005 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-10-28 23:02:35,013 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-10-28 23:02:35,019 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-10-28 23:02:35,020 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-10-28 23:02:35,021 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 11:02:35 BoogieIcfgContainer [2021-10-28 23:02:35,022 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-28 23:02:35,023 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 23:02:35,024 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 23:02:35,024 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 23:02:35,025 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:02:31" (3/4) ... [2021-10-28 23:02:35,032 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-28 23:02:35,050 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2021-10-28 23:02:35,051 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2021-10-28 23:02:35,052 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-28 23:02:35,052 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-28 23:02:35,098 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: !~fp.eq~FLOAT(x, x) && (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == \result) [2021-10-28 23:02:35,102 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (!~fp.eq~FLOAT(x, x) && 1bv32 == \result) && (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == \result) [2021-10-28 23:02:35,141 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc9ebaa6-b888-494d-a025-de7f817aef7f/bin/uautomizer-GMMbpWq8iD/witness.graphml [2021-10-28 23:02:35,141 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 23:02:35,143 INFO L168 Benchmark]: Toolchain (without parser) took 5631.99 ms. Allocated memory was 56.6 MB in the beginning and 73.4 MB in the end (delta: 16.8 MB). Free memory was 34.9 MB in the beginning and 32.3 MB in the end (delta: 2.6 MB). Peak memory consumption was 18.8 MB. Max. memory is 16.1 GB. [2021-10-28 23:02:35,144 INFO L168 Benchmark]: CDTParser took 0.42 ms. Allocated memory is still 56.6 MB. Free memory is still 38.1 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 23:02:35,145 INFO L168 Benchmark]: CACSL2BoogieTranslator took 378.12 ms. Allocated memory is still 56.6 MB. Free memory was 34.7 MB in the beginning and 40.4 MB in the end (delta: -5.6 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-10-28 23:02:35,146 INFO L168 Benchmark]: Boogie Procedure Inliner took 91.45 ms. Allocated memory is still 56.6 MB. Free memory was 40.4 MB in the beginning and 38.8 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 23:02:35,146 INFO L168 Benchmark]: Boogie Preprocessor took 80.85 ms. Allocated memory is still 56.6 MB. Free memory was 38.8 MB in the beginning and 37.2 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 23:02:35,147 INFO L168 Benchmark]: RCFGBuilder took 1108.89 ms. Allocated memory is still 56.6 MB. Free memory was 37.2 MB in the beginning and 25.5 MB in the end (delta: 11.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-28 23:02:35,148 INFO L168 Benchmark]: TraceAbstraction took 3845.07 ms. Allocated memory was 56.6 MB in the beginning and 73.4 MB in the end (delta: 16.8 MB). Free memory was 25.1 MB in the beginning and 35.3 MB in the end (delta: -10.1 MB). Peak memory consumption was 8.8 MB. Max. memory is 16.1 GB. [2021-10-28 23:02:35,148 INFO L168 Benchmark]: Witness Printer took 118.15 ms. Allocated memory is still 73.4 MB. Free memory was 35.3 MB in the beginning and 32.3 MB in the end (delta: 3.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 23:02:35,151 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.42 ms. Allocated memory is still 56.6 MB. Free memory is still 38.1 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 378.12 ms. Allocated memory is still 56.6 MB. Free memory was 34.7 MB in the beginning and 40.4 MB in the end (delta: -5.6 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 91.45 ms. Allocated memory is still 56.6 MB. Free memory was 40.4 MB in the beginning and 38.8 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 80.85 ms. Allocated memory is still 56.6 MB. Free memory was 38.8 MB in the beginning and 37.2 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 1108.89 ms. Allocated memory is still 56.6 MB. Free memory was 37.2 MB in the beginning and 25.5 MB in the end (delta: 11.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 3845.07 ms. Allocated memory was 56.6 MB in the beginning and 73.4 MB in the end (delta: 16.8 MB). Free memory was 25.1 MB in the beginning and 35.3 MB in the end (delta: -10.1 MB). Peak memory consumption was 8.8 MB. Max. memory is 16.1 GB. * Witness Printer took 118.15 ms. Allocated memory is still 73.4 MB. Free memory was 35.3 MB in the beginning and 32.3 MB in the end (delta: 3.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 74]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 26 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 3.7s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 51 SDtfs, 23 SDslu, 49 SDs, 0 SdLazy, 39 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 72 GetRequests, 52 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=26occurred in iteration=0, InterpolantAutomatonStates: 13, 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, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 8 NumberOfFragments, 32 HoareAnnotationTreeSize, 4 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 4 FomulaSimplificationsInter, 8 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 36 NumberOfCodeBlocks, 36 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 66 ConstructedInterpolants, 11 QuantifiedInterpolants, 224 SizeOfPredicates, 19 NumberOfNonLiveVariables, 142 ConjunctsInSsa, 20 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 59]: Loop Invariant [2021-10-28 23:02:35,168 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-10-28 23:02:35,169 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] Derived loop invariant: (!~fp.eq~FLOAT(x, x) && 1bv32 == \result) && (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == \result) - InvariantResult [Line: 18]: Loop Invariant Derived loop invariant: !~fp.eq~FLOAT(x, x) - InvariantResult [Line: 61]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 15]: Loop Invariant [2021-10-28 23:02:35,170 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-10-28 23:02:35,171 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] Derived loop invariant: !~fp.eq~FLOAT(x, x) && (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == \result) RESULT: Ultimate proved your program to be correct! [2021-10-28 23:02:35,228 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc9ebaa6-b888-494d-a025-de7f817aef7f/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...